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annotate genesis.c @ 2473:cf3e8a19aa25

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Fix Ax Battler: A Legend of Golden Axe
author Michael Pavone <pavone@retrodev.com>
date Sun, 25 Feb 2024 23:59:37 -0800
parents b5640ac9aea9
children aaf7bb58ffca
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
diff changeset
1 /*
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
diff changeset
2 Copyright 2013-2016 Michael Pavone
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
diff changeset
3 This file is part of BlastEm.
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
diff changeset
4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
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parents:
diff changeset
5 */
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
diff changeset
6 #include "genesis.h"
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
7 #include "segacd.h"
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
diff changeset
8 #include "blastem.h"
1414
d94855080529 Move I2C EEPROM and NOR Flash functions out of romdb.c into new files
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parents: 1401
diff changeset
9 #include "nor.h"
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
diff changeset
10 #include <stdlib.h>
1188
448ce87b87fc Fix missing include that prevented building Windows version
Michael Pavone <pavone@retrodev.com>
parents: 1184
diff changeset
11 #include <ctype.h>
1204
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
12 #include <time.h>
1220
1e7977460d18 Add mising include in genesis.c so the Windows build works again
Michael Pavone <pavone@retrodev.com>
parents: 1215
diff changeset
13 #include <string.h>
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
diff changeset
14 #include "render.h"
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
diff changeset
15 #include "gst.h"
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
diff changeset
16 #include "util.h"
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
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parents: 1108
diff changeset
17 #include "debug.h"
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
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parents: 1108
diff changeset
18 #include "gdb_remote.h"
1478
da1dce39e846 Refactored save slot related logic to reduce duplication and allow reuse in new UI. Get state loading/saving mostly working in new UI
Michael Pavone <pavone@retrodev.com>
parents: 1471
diff changeset
19 #include "saves.h"
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
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parents: 1576
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20 #include "bindings.h"
1610
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
21 #include "jcart.h"
1901
5433252329fb Set version reg and TAS behavior based on model config
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parents: 1889
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22 #include "config.h"
1946
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23 #include "event_log.h"
2083
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
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parents: 2080
diff changeset
24 #include "paths.h"
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
diff changeset
25 #define MCLKS_NTSC 53693175
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parents:
diff changeset
26 #define MCLKS_PAL 53203395
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parents:
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27
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
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28 uint32_t MCLKS_PER_68K;
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parents:
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29 #define MCLKS_PER_YM 7
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parents:
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30 #define MCLKS_PER_Z80 15
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31 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16)
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f17fe0d00626 Adjust Z80 interrupt pulse duration to match hardware measurements
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32 #define Z80_INT_PULSE_MCLKS 2573 //measured value is ~171.5 Z80 clocks
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
diff changeset
33 #define DEFAULT_SYNC_INTERVAL MCLKS_LINE
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
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34 #define DEFAULT_LOWPASS_CUTOFF 3390
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
diff changeset
35
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
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36 //TODO: Figure out the exact value for this
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
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37 #define LINES_NTSC 262
1556
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
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parents: 1555
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38 #define LINES_PAL 313
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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parents:
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39
1688
395f684c5379 Fixed the most glaring issues in libretro build
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40 #ifdef IS_LIB
1927
9fd4bedc1a31 Update libretro target to use render_audio shared audio code
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41 #define MAX_SOUND_CYCLES (MCLKS_PER_YM*NUM_OPERATORS*6*4)
1688
395f684c5379 Fixed the most glaring issues in libretro build
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42 #else
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3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
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43 #define MAX_SOUND_CYCLES 100000
1688
395f684c5379 Fixed the most glaring issues in libretro build
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parents: 1643
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44 #endif
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
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45
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
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46 #ifdef NEW_CORE
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
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47 #define Z80_CYCLE cycles
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
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48 #define Z80_OPTS opts
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49 #define z80_handle_code_write(...)
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50 #else
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51 #define Z80_CYCLE current_cycle
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52 #define Z80_OPTS options
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53 #endif
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54
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55 void genesis_serialize(genesis_context *gen, serialize_buffer *buf, uint32_t m68k_pc, uint8_t all)
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56 {
1946
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57 if (all) {
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58 start_section(buf, SECTION_68000);
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59 m68k_serialize(gen->m68k, m68k_pc, buf);
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60 end_section(buf);
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
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61
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62 if (gen->header.type == SYSTEM_GENESIS) {
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63 start_section(buf, SECTION_Z80);
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64 z80_serialize(gen->z80, buf);
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65 end_section(buf);
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66 }
1946
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67 }
2052
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68
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69 start_section(buf, SECTION_VDP);
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70 vdp_serialize(gen->vdp, buf);
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71 end_section(buf);
2052
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72
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cb62730d5c99 Initial work on Copera emulation
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73 if (gen->header.type != SYSTEM_PICO && gen->header.type != SYSTEM_COPERA) {
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74 start_section(buf, SECTION_YM2612);
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75 ym_serialize(gen->ym, buf);
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76 end_section(buf);
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77 }
2052
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78
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79 start_section(buf, SECTION_PSG);
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80 psg_serialize(gen->psg, buf);
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81 end_section(buf);
2052
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parents: 2039
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82
1946
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83 if (all) {
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84 start_section(buf, SECTION_GEN_BUS_ARBITER);
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85 save_int8(buf, gen->z80->reset);
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86 save_int8(buf, gen->z80->busreq);
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87 save_int16(buf, gen->z80_bank_reg);
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88 //I think the refresh logic may technically be part of the VDP, but whatever
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89 save_int32(buf, gen->last_sync_cycle);
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90 save_int32(buf, gen->refresh_counter);
1946
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91 end_section(buf);
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3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
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parents: 2039
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92
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93 if (gen->header.type == SYSTEM_GENESIS) {
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94 start_section(buf, SECTION_SEGA_IO_1);
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95 io_serialize(gen->io.ports, buf);
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96 end_section(buf);
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97
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98 start_section(buf, SECTION_SEGA_IO_2);
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99 io_serialize(gen->io.ports + 1, buf);
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100 end_section(buf);
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parents: 2039
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101
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102 start_section(buf, SECTION_SEGA_IO_EXT);
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103 io_serialize(gen->io.ports + 2, buf);
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104 end_section(buf);
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105 }
2052
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parents: 2039
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106
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107 start_section(buf, SECTION_MAIN_RAM);
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108 save_int8(buf, RAM_WORDS * 2 / 1024);
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109 save_buffer16(buf, gen->work_ram, RAM_WORDS);
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110 end_section(buf);
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
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parents: 2039
diff changeset
111
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112 if (gen->header.type == SYSTEM_GENESIS) {
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113 start_section(buf, SECTION_SOUND_RAM);
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114 save_int8(buf, Z80_RAM_BYTES / 1024);
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115 save_buffer8(buf, gen->zram, Z80_RAM_BYTES);
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116 end_section(buf);
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
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parents: 2039
diff changeset
117
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diff changeset
118 if (gen->version_reg & 0xF) {
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diff changeset
119 //only save TMSS info if it's present
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diff changeset
120 //that will allow a state saved on a model lacking TMSS
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diff changeset
121 //to be loaded on a model that has it
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diff changeset
122 start_section(buf, SECTION_TMSS);
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parents: 2424
diff changeset
123 save_int8(buf, gen->tmss);
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diff changeset
124 save_buffer16(buf, gen->tmss_lock, 2);
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diff changeset
125 end_section(buf);
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diff changeset
126 }
2039
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diff changeset
127 }
2052
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parents: 2039
diff changeset
128
1946
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diff changeset
129 cart_serialize(&gen->header, buf);
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diff changeset
130 }
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diff changeset
131 if (gen->expansion) {
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132 segacd_context *cd = gen->expansion;
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diff changeset
133 segacd_serialize(cd, buf, all);
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diff changeset
134 }
1427
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diff changeset
135 }
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diff changeset
136
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diff changeset
137 static uint8_t *serialize(system_header *sys, size_t *size_out)
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diff changeset
138 {
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diff changeset
139 genesis_context *gen = (genesis_context *)sys;
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diff changeset
140 uint32_t address;
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diff changeset
141 if (gen->m68k->resume_pc) {
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diff changeset
142 gen->m68k->target_cycle = gen->m68k->current_cycle;
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diff changeset
143 gen->header.save_state = SERIALIZE_SLOT+1;
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diff changeset
144 resume_68k(gen->m68k);
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diff changeset
145 if (size_out) {
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diff changeset
146 *size_out = gen->serialize_size;
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diff changeset
147 }
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diff changeset
148 return gen->serialize_tmp;
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diff changeset
149 } else {
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diff changeset
150 serialize_buffer state;
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diff changeset
151 init_serialize(&state);
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diff changeset
152 uint32_t address = read_word(4, (void **)gen->m68k->mem_pointers, &gen->m68k->options->gen, gen->m68k) << 16;
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diff changeset
153 address |= read_word(6, (void **)gen->m68k->mem_pointers, &gen->m68k->options->gen, gen->m68k);
1946
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diff changeset
154 genesis_serialize(gen, &state, address, 1);
1690
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diff changeset
155 if (size_out) {
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diff changeset
156 *size_out = state.size;
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diff changeset
157 }
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diff changeset
158 return state.data;
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diff changeset
159 }
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diff changeset
160 }
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diff changeset
161
1427
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diff changeset
162 static void ram_deserialize(deserialize_buffer *buf, void *vgen)
4e5797b3935a WIP - New savestate format
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diff changeset
163 {
4e5797b3935a WIP - New savestate format
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diff changeset
164 genesis_context *gen = vgen;
4e5797b3935a WIP - New savestate format
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diff changeset
165 uint32_t ram_size = load_int8(buf) * 1024 / 2;
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diff changeset
166 if (ram_size > RAM_WORDS) {
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diff changeset
167 fatal_error("State has a RAM size of %d bytes", ram_size * 2);
4e5797b3935a WIP - New savestate format
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diff changeset
168 }
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parents: 1420
diff changeset
169 load_buffer16(buf, gen->work_ram, ram_size);
1452
f284ad74afe1 Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
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parents: 1449
diff changeset
170 m68k_invalidate_code_range(gen->m68k, 0xE00000, 0x1000000);
1427
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diff changeset
171 }
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diff changeset
172
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diff changeset
173 static void zram_deserialize(deserialize_buffer *buf, void *vgen)
4e5797b3935a WIP - New savestate format
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parents: 1420
diff changeset
174 {
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diff changeset
175 genesis_context *gen = vgen;
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diff changeset
176 uint32_t ram_size = load_int8(buf) * 1024;
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diff changeset
177 if (ram_size > Z80_RAM_BYTES) {
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diff changeset
178 fatal_error("State has a Z80 RAM size of %d bytes", ram_size);
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diff changeset
179 }
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diff changeset
180 load_buffer8(buf, gen->zram, ram_size);
1452
f284ad74afe1 Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
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parents: 1449
diff changeset
181 z80_invalidate_code_range(gen->z80, 0, 0x4000);
1427
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diff changeset
182 }
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diff changeset
183
1445
349d50930c03 Save and restore Z80 bank register in native save states
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diff changeset
184 static void update_z80_bank_pointer(genesis_context *gen)
349d50930c03 Save and restore Z80 bank register in native save states
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diff changeset
185 {
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
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diff changeset
186 if (gen->z80_bank_reg < 0x140) {
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diff changeset
187 gen->z80->mem_pointers[1] = get_native_pointer(gen->z80_bank_reg << 15, (void **)gen->m68k->mem_pointers, &gen->m68k->options->gen);
1445
349d50930c03 Save and restore Z80 bank register in native save states
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diff changeset
188 } else {
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diff changeset
189 gen->z80->mem_pointers[1] = NULL;
349d50930c03 Save and restore Z80 bank register in native save states
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diff changeset
190 }
1753
33ec5df77fac Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents: 1752
diff changeset
191 z80_invalidate_code_range(gen->z80, 0x8000, 0xFFFF);
1445
349d50930c03 Save and restore Z80 bank register in native save states
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diff changeset
192 }
349d50930c03 Save and restore Z80 bank register in native save states
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parents: 1444
diff changeset
193
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7d4483944d4d Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
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parents: 1433
diff changeset
194 static void bus_arbiter_deserialize(deserialize_buffer *buf, void *vgen)
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parents: 1433
diff changeset
195 {
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parents: 1433
diff changeset
196 genesis_context *gen = vgen;
7d4483944d4d Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
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diff changeset
197 gen->z80->reset = load_int8(buf);
7d4483944d4d Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents: 1433
diff changeset
198 gen->z80->busreq = load_int8(buf);
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
199 gen->z80_bank_reg = load_int16(buf) & 0x1FF;
2280
9ead0fe69d9b Implement savestate support for Sega CD
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parents: 2278
diff changeset
200 if ((buf->size - buf->cur_pos) >= 2 * sizeof(uint32_t)) {
9ead0fe69d9b Implement savestate support for Sega CD
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parents: 2278
diff changeset
201 gen->last_sync_cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD
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parents: 2278
diff changeset
202 gen->refresh_counter = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
203 } else {
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
204 //save state is from an older version of BlastEm that lacks these fields
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
205 //set them to reasonable values
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
206 gen->last_sync_cycle = gen->m68k->current_cycle;
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
207 gen->refresh_counter = 0;
9ead0fe69d9b Implement savestate support for Sega CD
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parents: 2278
diff changeset
208 }
1440
7d4483944d4d Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents: 1433
diff changeset
209 }
7d4483944d4d Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents: 1433
diff changeset
210
2039
3b8e29ef1145 Add TMSS state to save states
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parents: 2037
diff changeset
211 static void tmss_deserialize(deserialize_buffer *buf, void *vgen)
3b8e29ef1145 Add TMSS state to save states
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parents: 2037
diff changeset
212 {
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
213 genesis_context *gen = vgen;
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
214 gen->tmss = load_int8(buf);
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
215 load_buffer16(buf, gen->tmss_lock, 2);
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
216 }
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
217
1636
d2775a242dc6 Make sure M68K sync and target cycles are updated after loading a savestate. Fixes an issue in which loading a savestate would result in things being unresponsive until emulation cycle caught up to whatever the pre-state load sync cycle was
Mike Pavone <pavone@retrodev.com>
parents: 1631
diff changeset
218 static void adjust_int_cycle(m68k_context * context, vdp_context * v_context);
2039
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
219 static void check_tmss_lock(genesis_context *gen);
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
220 static void toggle_tmss_rom(genesis_context *gen);
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
221 #include "m68k_internal.h" //needed for get_native_address_trans, should be eliminated once handling of PC is cleaned up
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
222 void genesis_deserialize(deserialize_buffer *buf, genesis_context *gen)
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
223 {
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
224 register_section_handler(buf, (section_handler){.fun = m68k_deserialize, .data = gen->m68k}, SECTION_68000);
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
225 register_section_handler(buf, (section_handler){.fun = vdp_deserialize, .data = gen->vdp}, SECTION_VDP);
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
226 register_section_handler(buf, (section_handler){.fun = psg_deserialize, .data = gen->psg}, SECTION_PSG);
1440
7d4483944d4d Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents: 1433
diff changeset
227 register_section_handler(buf, (section_handler){.fun = bus_arbiter_deserialize, .data = gen}, SECTION_GEN_BUS_ARBITER);
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
228 register_section_handler(buf, (section_handler){.fun = ram_deserialize, .data = gen}, SECTION_MAIN_RAM);
1444
14a2834d010c Save/restore mapper state in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1440
diff changeset
229 register_section_handler(buf, (section_handler){.fun = cart_deserialize, .data = gen}, SECTION_MAPPER);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
230 if (gen->header.type == SYSTEM_GENESIS) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
231 register_section_handler(buf, (section_handler){.fun = z80_deserialize, .data = gen->z80}, SECTION_Z80);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
232 register_section_handler(buf, (section_handler){.fun = io_deserialize, .data = gen->io.ports}, SECTION_SEGA_IO_1);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
233 register_section_handler(buf, (section_handler){.fun = io_deserialize, .data = gen->io.ports + 1}, SECTION_SEGA_IO_2);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
234 register_section_handler(buf, (section_handler){.fun = io_deserialize, .data = gen->io.ports + 2}, SECTION_SEGA_IO_EXT);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
235 register_section_handler(buf, (section_handler){.fun = zram_deserialize, .data = gen}, SECTION_SOUND_RAM);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
236 register_section_handler(buf, (section_handler){.fun = tmss_deserialize, .data = gen}, SECTION_TMSS);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
237 }
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
238 if (gen->header.type != SYSTEM_PICO && gen->header.type != SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
239 register_section_handler(buf, (section_handler){.fun = ym_deserialize, .data = gen->ym}, SECTION_YM2612);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
240 }
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
241 if (gen->expansion) {
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
242 segacd_context *cd = gen->expansion;
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
243 segacd_register_section_handlers(cd, buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
244 }
2039
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
245 uint8_t tmss_old = gen->tmss;
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
246 gen->tmss = 0xFF;
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
247 while (buf->cur_pos < buf->size)
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
248 {
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
249 load_section(buf);
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
250 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
251 if (gen->header.type == SYSTEM_GENESIS && (gen->version_reg & 0xF)) {
2039
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
252 if (gen->tmss == 0xFF) {
3b8e29ef1145 Add TMSS state to save states
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parents: 2037
diff changeset
253 //state lacked a TMSS section, assume that the game ROM is mapped in
3b8e29ef1145 Add TMSS state to save states
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parents: 2037
diff changeset
254 //and that the VDP is unlocked
3b8e29ef1145 Add TMSS state to save states
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parents: 2037
diff changeset
255 gen->tmss_lock[0] = 0x5345;
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
256 gen->tmss_lock[1] = 0x4741;
3b8e29ef1145 Add TMSS state to save states
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parents: 2037
diff changeset
257 gen->tmss = 1;
3b8e29ef1145 Add TMSS state to save states
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parents: 2037
diff changeset
258 }
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
259 if (gen->tmss != tmss_old) {
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
260 toggle_tmss_rom(gen);
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
261 }
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
262 check_tmss_lock(gen);
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
263 }
1445
349d50930c03 Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1444
diff changeset
264 update_z80_bank_pointer(gen);
1636
d2775a242dc6 Make sure M68K sync and target cycles are updated after loading a savestate. Fixes an issue in which loading a savestate would result in things being unresponsive until emulation cycle caught up to whatever the pre-state load sync cycle was
Mike Pavone <pavone@retrodev.com>
parents: 1631
diff changeset
265 adjust_int_cycle(gen->m68k, gen->vdp);
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
266 //HACK: Fix this once PC/IR is represented in a better way in 68K core
9ead0fe69d9b Implement savestate support for Sega CD
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parents: 2278
diff changeset
267 //Would be better for this hack to live in side the 68K core itself, but it's better to do it
9ead0fe69d9b Implement savestate support for Sega CD
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parents: 2278
diff changeset
268 //after RAM has been loaded to avoid any unnecessary retranslation
9ead0fe69d9b Implement savestate support for Sega CD
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parents: 2278
diff changeset
269 gen->m68k->resume_pc = get_native_address_trans(gen->m68k, gen->m68k->last_prefetch_address);
9ead0fe69d9b Implement savestate support for Sega CD
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parents: 2278
diff changeset
270 if (gen->expansion) {
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
271 segacd_context *cd = gen->expansion;
9ead0fe69d9b Implement savestate support for Sega CD
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parents: 2278
diff changeset
272 cd->m68k->resume_pc = get_native_address_trans(cd->m68k, cd->m68k->last_prefetch_address);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
273 }
1690
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
274 free(buf->handlers);
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
275 buf->handlers = NULL;
319d90025d50 Implement serialization/deserialization in libretro build
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parents: 1688
diff changeset
276 }
319d90025d50 Implement serialization/deserialization in libretro build
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parents: 1688
diff changeset
277
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
278 static void deserialize(system_header *sys, uint8_t *data, size_t size)
319d90025d50 Implement serialization/deserialization in libretro build
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parents: 1688
diff changeset
279 {
319d90025d50 Implement serialization/deserialization in libretro build
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parents: 1688
diff changeset
280 genesis_context *gen = (genesis_context *)sys;
319d90025d50 Implement serialization/deserialization in libretro build
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parents: 1688
diff changeset
281 deserialize_buffer buffer;
319d90025d50 Implement serialization/deserialization in libretro build
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parents: 1688
diff changeset
282 init_deserialize(&buffer, data, size);
319d90025d50 Implement serialization/deserialization in libretro build
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parents: 1688
diff changeset
283 genesis_deserialize(&buffer, gen);
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
284 }
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
285
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
286 uint16_t read_dma_value(uint32_t address)
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
287 {
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
288 genesis_context *genesis = (genesis_context *)current_system;
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
289 address *= 2;
1420
975b5b7eaa77 Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents: 1416
diff changeset
290 //TODO: Figure out what happens when you try to DMA from weird adresses like IO or banked Z80 area
975b5b7eaa77 Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents: 1416
diff changeset
291 if ((address >= 0xA00000 && address < 0xB00000) || (address >= 0xC00000 && address <= 0xE00000)) {
975b5b7eaa77 Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents: 1416
diff changeset
292 return 0;
975b5b7eaa77 Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents: 1416
diff changeset
293 }
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
294 if (genesis->expansion) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
295 segacd_context *cd = genesis->expansion;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
296 uint32_t word_ram = cd->base + 0x200000;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
297 uint32_t word_ram_end = cd->base + 0x240000;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
298 if (address >= word_ram && address < word_ram_end) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
299 //FIXME: first word should just be garbage
2336
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
300 if (!cd->has_vdp_dma_value) {
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
301 cd->vdp_dma_value = read_word(genesis->m68k->last_prefetch_address, (void **)genesis->m68k->mem_pointers, &genesis->m68k->options->gen, genesis->m68k);
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
302 cd->has_vdp_dma_value = 1;
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
303 }
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
304 uint16_t ret = cd->vdp_dma_value;
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
305 cd->vdp_dma_value = read_word(address, (void **)genesis->m68k->mem_pointers, &genesis->m68k->options->gen, genesis->m68k);
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
306 return ret;
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
307 }
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
308 }
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
309
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
310 return read_word(address, (void **)genesis->m68k->mem_pointers, &genesis->m68k->options->gen, genesis->m68k);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
311 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
312
2336
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
313 void vdp_dma_started(void)
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
314 {
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
315 genesis_context *genesis = (genesis_context *)current_system;
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
316 if (genesis->expansion) {
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
317 segacd_context *cd = genesis->expansion;
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
318 cd->has_vdp_dma_value = 0;
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
319 }
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
320 }
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
321
83f5529086c5 Make bogus word RAM read more appropriately bogus
Michael Pavone <pavone@retrodev.com>
parents: 2335
diff changeset
322
1117
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents: 1116
diff changeset
323 static uint16_t get_open_bus_value(system_header *system)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
324 {
1117
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents: 1116
diff changeset
325 genesis_context *genesis = (genesis_context *)system;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
326 return read_dma_value(genesis->m68k->last_prefetch_address/2);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
327 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
328
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
329 static void adjust_int_cycle(m68k_context * context, vdp_context * v_context)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
330 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
331 //static int old_int_cycle = CYCLE_NEVER;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
332 genesis_context *gen = context->system;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
333 if (context->sync_cycle - context->current_cycle > gen->max_cycles) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
334 context->sync_cycle = context->current_cycle + gen->max_cycles;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
335 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
336 context->int_cycle = CYCLE_NEVER;
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
337 uint8_t mask = context->status & 0x7;
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
338 if (mask < 6) {
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
339 uint32_t next_vint = vdp_next_vint(v_context);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
340 if (next_vint != CYCLE_NEVER) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
341 context->int_cycle = next_vint;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
342 context->int_num = 6;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
343 }
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
344 if (mask < 4) {
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
345 uint32_t next_hint = vdp_next_hint(v_context);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
346 if (next_hint != CYCLE_NEVER) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
347 next_hint = next_hint < context->current_cycle ? context->current_cycle : next_hint;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
348 if (next_hint < context->int_cycle) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
349 context->int_cycle = next_hint;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
350 context->int_num = 4;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
351
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
352 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
353 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
354 if (mask < 2 && (v_context->regs[REG_MODE_3] & BIT_EINT_EN) && gen->header.type == SYSTEM_GENESIS) {
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
355 uint32_t next_eint_port0 = io_next_interrupt(gen->io.ports, context->current_cycle);
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
356 uint32_t next_eint_port1 = io_next_interrupt(gen->io.ports + 1, context->current_cycle);
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
357 uint32_t next_eint_port2 = io_next_interrupt(gen->io.ports + 2, context->current_cycle);
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
358 uint32_t next_eint = next_eint_port0 < next_eint_port1
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
359 ? (next_eint_port0 < next_eint_port2 ? next_eint_port0 : next_eint_port2)
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
360 : (next_eint_port1 < next_eint_port2 ? next_eint_port1 : next_eint_port2);
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
361 if (next_eint != CYCLE_NEVER) {
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
362 next_eint = next_eint < context->current_cycle ? context->current_cycle : next_eint;
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
363 if (next_eint < context->int_cycle) {
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
364 context->int_cycle = next_eint;
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
365 context->int_num = 2;
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
366 }
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
367 }
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
368 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
369 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
370 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
371 if (context->int_cycle > context->current_cycle && context->int_pending == INT_PENDING_SR_CHANGE) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
372 context->int_pending = INT_PENDING_NONE;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
373 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
374 /*if (context->int_cycle != old_int_cycle) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
375 printf("int cycle changed to: %d, level: %d @ %d(%d), frame: %d, vcounter: %d, hslot: %d, mask: %d, hint_counter: %d\n", context->int_cycle, context->int_num, v_context->cycles, context->current_cycle, v_context->frame, v_context->vcounter, v_context->hslot, context->status & 0x7, v_context->hint_counter);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
376 old_int_cycle = context->int_cycle;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
377 }*/
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
378
1304
5b90d7669eee Fix exit trace mode edge case. Call do_sync if trace mode bit is changed in eori sr
Michael Pavone <pavone@retrodev.com>
parents: 1303
diff changeset
379 if (context->status & M68K_STATUS_TRACE || context->trace_pending) {
1303
208803173ebc Implemented M68K trace mode. Some edge cases/SR update paths still need work
Michael Pavone <pavone@retrodev.com>
parents: 1291
diff changeset
380 context->target_cycle = context->current_cycle;
208803173ebc Implemented M68K trace mode. Some edge cases/SR update paths still need work
Michael Pavone <pavone@retrodev.com>
parents: 1291
diff changeset
381 return;
208803173ebc Implemented M68K trace mode. Some edge cases/SR update paths still need work
Michael Pavone <pavone@retrodev.com>
parents: 1291
diff changeset
382 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
383
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
384 context->target_cycle = context->int_cycle < context->sync_cycle ? context->int_cycle : context->sync_cycle;
2424
767ec72acca7 Avoid conflicts between watchpoints and normal debugger entry
Michael Pavone <pavone@retrodev.com>
parents: 2391
diff changeset
385 if (context->should_return || gen->header.enter_debugger || context->wp_hit) {
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
386 context->target_cycle = context->current_cycle;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
387 } else if (context->target_cycle < context->current_cycle) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
388 //Changes to SR can result in an interrupt cycle that's in the past
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
389 //This can cause issues with the implementation of STOP though
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
390 context->target_cycle = context->current_cycle;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
391 }
1364
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
392 if (context->target_cycle == context->int_cycle) {
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
393 //Currently delays from Z80 access and refresh are applied only when we sync
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
394 //this can cause extra latency when it comes to interrupts
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
395 //to prevent this code forces some extra synchronization in the period immediately before an interrupt
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
396 if ((context->target_cycle - context->current_cycle) > gen->int_latency_prev1) {
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
397 context->target_cycle = context->sync_cycle = context->int_cycle - gen->int_latency_prev1;
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
398 } else if ((context->target_cycle - context->current_cycle) > gen->int_latency_prev2) {
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
399 context->target_cycle = context->sync_cycle = context->int_cycle - gen->int_latency_prev2;
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
400 } else {
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
401 context->target_cycle = context->sync_cycle = context->current_cycle;
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
402 }
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
403
1364
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
404 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
405 /*printf("Cyc: %d, Trgt: %d, Int Cyc: %d, Int: %d, Mask: %X, V: %d, H: %d, HICount: %d, HReg: %d, Line: %d\n",
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
406 context->current_cycle, context->target_cycle, context->int_cycle, context->int_num, (context->status & 0x7),
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
407 v_context->regs[REG_MODE_2] & 0x20, v_context->regs[REG_MODE_1] & 0x10, v_context->hint_counter, v_context->regs[REG_HINT], v_context->cycles / MCLKS_LINE);*/
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
408 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
409
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
410 //#define DO_DEBUG_PRINT
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
411 #ifdef DO_DEBUG_PRINT
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
412 #define dprintf printf
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
413 #define dputs puts
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
414 #else
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
415 #define dprintf
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
416 #define dputs
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
417 #endif
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
418
1117
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents: 1116
diff changeset
419 static void z80_next_int_pulse(z80_context * z_context)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
420 {
1108
87114df913ec Fix Z80 interrupt pulse duration. Fixes inconsistent music playback speed in Sonic 2 introduced in 0.4.1
Michael Pavone <pavone@retrodev.com>
parents: 1105
diff changeset
421 genesis_context * gen = z_context->system;
1753
33ec5df77fac Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents: 1752
diff changeset
422 #ifdef NEW_CORE
33ec5df77fac Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents: 1752
diff changeset
423 z_context->int_cycle = vdp_next_vint_z80(gen->vdp);
33ec5df77fac Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents: 1752
diff changeset
424 z_context->int_end_cycle = z_context->int_cycle + Z80_INT_PULSE_MCLKS;
33ec5df77fac Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents: 1752
diff changeset
425 z_context->int_value = 0xFF;
1766
1dc718581aac Fix Z80 interrupts in Gen/MD mode when using new core. Disable CPU debug log in new Z80 core
Michael Pavone <pavone@retrodev.com>
parents: 1753
diff changeset
426 z80_sync_cycle(z_context, z_context->sync_cycle);
1753
33ec5df77fac Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents: 1752
diff changeset
427 #else
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
428 z_context->int_pulse_start = vdp_next_vint_z80(gen->vdp);
1291
f17fe0d00626 Adjust Z80 interrupt pulse duration to match hardware measurements
Michael Pavone <pavone@retrodev.com>
parents: 1288
diff changeset
429 z_context->int_pulse_end = z_context->int_pulse_start + Z80_INT_PULSE_MCLKS;
1471
2e6320d261ff Implemented Z80 IM 2 and attempted correct intack cycle delay
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
430 z_context->im2_vector = 0xFF;
1753
33ec5df77fac Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents: 1752
diff changeset
431 #endif
1108
87114df913ec Fix Z80 interrupt pulse duration. Fixes inconsistent music playback speed in Sonic 2 introduced in 0.4.1
Michael Pavone <pavone@retrodev.com>
parents: 1105
diff changeset
432 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
433
2184
408fb8a7e990 Implement argumentless variant of z80 debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2179
diff changeset
434 static void sync_z80(genesis_context *gen, uint32_t mclks)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
435 {
2184
408fb8a7e990 Implement argumentless variant of z80 debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2179
diff changeset
436 z80_context *z_context = gen->z80;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
437 #ifndef NO_Z80
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
438 if (z80_enabled) {
1753
33ec5df77fac Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents: 1752
diff changeset
439 #ifdef NEW_CORE
1766
1dc718581aac Fix Z80 interrupts in Gen/MD mode when using new core. Disable CPU debug log in new Z80 core
Michael Pavone <pavone@retrodev.com>
parents: 1753
diff changeset
440 if (z_context->int_cycle == 0xFFFFFFFFU) {
1dc718581aac Fix Z80 interrupts in Gen/MD mode when using new core. Disable CPU debug log in new Z80 core
Michael Pavone <pavone@retrodev.com>
parents: 1753
diff changeset
441 z80_next_int_pulse(z_context);
1dc718581aac Fix Z80 interrupts in Gen/MD mode when using new core. Disable CPU debug log in new Z80 core
Michael Pavone <pavone@retrodev.com>
parents: 1753
diff changeset
442 }
1753
33ec5df77fac Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents: 1752
diff changeset
443 #endif
2184
408fb8a7e990 Implement argumentless variant of z80 debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2179
diff changeset
444 if (gen->enter_z80_debugger && !z_context->reset && !z_context->busack) {
408fb8a7e990 Implement argumentless variant of z80 debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2179
diff changeset
445 while (!z_context->pc) {
408fb8a7e990 Implement argumentless variant of z80 debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2179
diff changeset
446 z80_run(z_context, z_context->current_cycle + 4);
408fb8a7e990 Implement argumentless variant of z80 debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2179
diff changeset
447 }
408fb8a7e990 Implement argumentless variant of z80 debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2179
diff changeset
448 gen->enter_z80_debugger = 0;
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
449 #ifndef IS_LIB
2184
408fb8a7e990 Implement argumentless variant of z80 debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2179
diff changeset
450 zdebugger(z_context, z_context->pc);
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
451 #endif
2184
408fb8a7e990 Implement argumentless variant of z80 debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2179
diff changeset
452 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
453 z80_run(z_context, mclks);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
454 } else
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
455 #endif
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
456 {
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
457 z_context->Z80_CYCLE = mclks;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
458 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
459 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
460
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
461 static void sync_sound(genesis_context * gen, uint32_t target)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
462 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
463 //printf("YM | Cycle: %d, bpos: %d, PSG | Cycle: %d, bpos: %d\n", gen->ym->current_cycle, gen->ym->buffer_pos, gen->psg->cycles, gen->psg->buffer_pos * 2);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
464 while (target > gen->psg->cycles && target - gen->psg->cycles > MAX_SOUND_CYCLES) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
465 uint32_t cur_target = gen->psg->cycles + MAX_SOUND_CYCLES;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
466 //printf("Running PSG to cycle %d\n", cur_target);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
467 psg_run(gen->psg, cur_target);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
468 //printf("Running YM-2612 to cycle %d\n", cur_target);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
469 ym_run(gen->ym, cur_target);
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2054
diff changeset
470 if (gen->expansion) {
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2054
diff changeset
471 scd_run(gen->expansion, gen_cycle_to_scd(cur_target, gen));
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2054
diff changeset
472 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
473 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
474 psg_run(gen->psg, target);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
475 ym_run(gen->ym, target);
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2054
diff changeset
476 if (gen->expansion) {
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2054
diff changeset
477 scd_run(gen->expansion, gen_cycle_to_scd(target, gen));
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2054
diff changeset
478 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
479
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
480 //printf("Target: %d, YM bufferpos: %d, PSG bufferpos: %d\n", target, gen->ym->buffer_pos, gen->psg->buffer_pos * 2);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
481 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
482
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
483 #define REFRESH_INTERVAL 128
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
484 #define REFRESH_DELAY 2
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
485
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
486 void gen_update_refresh(m68k_context *context)
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
487 {
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
488 uint32_t interval = MCLKS_PER_68K * REFRESH_INTERVAL;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
489 genesis_context *gen = context->system;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
490 gen->refresh_counter += context->current_cycle - gen->last_sync_cycle;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
491 gen->last_sync_cycle = context->current_cycle;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
492 context->current_cycle += REFRESH_DELAY * MCLKS_PER_68K * (gen->refresh_counter / interval);
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
493 gen->refresh_counter = gen->refresh_counter % interval;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
494 }
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
495
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
496 void gen_update_refresh_free_access(m68k_context *context)
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
497 {
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
498 genesis_context *gen = context->system;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
499 uint32_t before = context->current_cycle - 4*MCLKS_PER_68K;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
500 if (before < gen->last_sync_cycle) {
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
501 return;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
502 }
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
503 //Add refresh delays for any accesses that happened beofre the current one
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
504 gen->refresh_counter += before - gen->last_sync_cycle;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
505 uint32_t interval = MCLKS_PER_68K * REFRESH_INTERVAL;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
506 uint32_t delay = REFRESH_DELAY * MCLKS_PER_68K * (gen->refresh_counter / interval);
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
507 if (delay) {
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
508 //To avoid the extra cycles being absorbed in the refresh free update below, we need to update again
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
509 gen->refresh_counter = gen->refresh_counter % interval;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
510 gen->refresh_counter += delay;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
511 delay += REFRESH_DELAY * MCLKS_PER_68K * (gen->refresh_counter / interval);
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
512 context->current_cycle += delay;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
513 }
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
514 gen->last_sync_cycle = context->current_cycle;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
515 //advance refresh counter for the current access, but don't generate delays
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
516 gen->refresh_counter += 4*MCLKS_PER_68K;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
517 gen->refresh_counter = gen->refresh_counter % interval;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
518 }
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
519
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
520 void gen_update_refresh_no_wait(m68k_context *context)
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
521 {
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
522 uint32_t interval = MCLKS_PER_68K * REFRESH_INTERVAL;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
523 genesis_context *gen = context->system;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
524 gen->refresh_counter += context->current_cycle - gen->last_sync_cycle;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
525 gen->last_sync_cycle = context->current_cycle;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
526 gen->refresh_counter = gen->refresh_counter % interval;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
527 }
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
528
1170
9170fc4d9835 Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents: 1165
diff changeset
529 #include <limits.h>
9170fc4d9835 Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents: 1165
diff changeset
530 #define ADJUST_BUFFER (8*MCLKS_LINE*313)
9170fc4d9835 Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents: 1165
diff changeset
531 #define MAX_NO_ADJUST (UINT_MAX-ADJUST_BUFFER)
9170fc4d9835 Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents: 1165
diff changeset
532
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
533 static m68k_context *sync_components(m68k_context * context, uint32_t address)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
534 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
535 genesis_context * gen = context->system;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
536 vdp_context * v_context = gen->vdp;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
537 z80_context * z_context = gen->z80;
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
538 if (gen->bus_busy) {
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
539 gen_update_refresh_no_wait(context);
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
540 } else {
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
541 gen_update_refresh(context);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
542 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
543
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
544 uint32_t mclks = context->current_cycle;
2184
408fb8a7e990 Implement argumentless variant of z80 debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2179
diff changeset
545 sync_z80(gen, mclks);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
546 sync_sound(gen, mclks);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
547 vdp_run_context(v_context, mclks);
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
548 io_run(gen->io.ports, mclks);
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
549 io_run(gen->io.ports + 1, mclks);
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
550 io_run(gen->io.ports + 2, mclks);
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
551 if (gen->expansion) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
552 scd_run(gen->expansion, gen_cycle_to_scd(mclks, gen));
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
553 }
1556
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
554 if (mclks >= gen->reset_cycle) {
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
555 gen->reset_requested = 1;
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
556 context->should_return = 1;
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
557 gen->reset_cycle = CYCLE_NEVER;
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
558 }
1971
80920c21bb52 Add an event log soft flush and call it twice per frame in between hard flushes to netplay latency when there are insufficient hardware updates to flush packets in the middle of a frame
Michael Pavone <pavone@retrodev.com>
parents: 1954
diff changeset
559 if (v_context->frame != gen->last_frame) {
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
560 #ifndef IS_LIB
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
561 if (gen->ym->scope) {
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
562 scope_render(gen->ym->scope);
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
563 }
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
564 #endif
1971
80920c21bb52 Add an event log soft flush and call it twice per frame in between hard flushes to netplay latency when there are insufficient hardware updates to flush packets in the middle of a frame
Michael Pavone <pavone@retrodev.com>
parents: 1954
diff changeset
565 //printf("reached frame end %d | MCLK Cycles: %d, Target: %d, VDP cycles: %d, vcounter: %d, hslot: %d\n", gen->last_frame, mclks, gen->frame_end, v_context->cycles, v_context->vcounter, v_context->hslot);
2179
9a8dd4ba2753 Implement frame advance debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2164
diff changeset
566 uint32_t elapsed = v_context->frame - gen->last_frame;
1971
80920c21bb52 Add an event log soft flush and call it twice per frame in between hard flushes to netplay latency when there are insufficient hardware updates to flush packets in the middle of a frame
Michael Pavone <pavone@retrodev.com>
parents: 1954
diff changeset
567 gen->last_frame = v_context->frame;
80920c21bb52 Add an event log soft flush and call it twice per frame in between hard flushes to netplay latency when there are insufficient hardware updates to flush packets in the middle of a frame
Michael Pavone <pavone@retrodev.com>
parents: 1954
diff changeset
568 event_flush(mclks);
80920c21bb52 Add an event log soft flush and call it twice per frame in between hard flushes to netplay latency when there are insufficient hardware updates to flush packets in the middle of a frame
Michael Pavone <pavone@retrodev.com>
parents: 1954
diff changeset
569 gen->last_flush_cycle = mclks;
2179
9a8dd4ba2753 Implement frame advance debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2164
diff changeset
570 if (gen->header.enter_debugger_frames) {
9a8dd4ba2753 Implement frame advance debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2164
diff changeset
571 if (elapsed >= gen->header.enter_debugger_frames) {
9a8dd4ba2753 Implement frame advance debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2164
diff changeset
572 gen->header.enter_debugger_frames = 0;
9a8dd4ba2753 Implement frame advance debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2164
diff changeset
573 gen->header.enter_debugger = 1;
9a8dd4ba2753 Implement frame advance debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2164
diff changeset
574 } else {
9a8dd4ba2753 Implement frame advance debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2164
diff changeset
575 gen->header.enter_debugger_frames -= elapsed;
9a8dd4ba2753 Implement frame advance debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2164
diff changeset
576 }
9a8dd4ba2753 Implement frame advance debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2164
diff changeset
577 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
578
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
579 if(exit_after){
2179
9a8dd4ba2753 Implement frame advance debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2164
diff changeset
580 if (elapsed >= exit_after) {
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
581 exit(0);
2179
9a8dd4ba2753 Implement frame advance debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2164
diff changeset
582 } else {
9a8dd4ba2753 Implement frame advance debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2164
diff changeset
583 exit_after -= elapsed;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
584 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
585 }
1170
9170fc4d9835 Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents: 1165
diff changeset
586 if (context->current_cycle > MAX_NO_ADJUST) {
9170fc4d9835 Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents: 1165
diff changeset
587 uint32_t deduction = mclks - ADJUST_BUFFER;
9170fc4d9835 Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents: 1165
diff changeset
588 vdp_adjust_cycles(v_context, deduction);
9170fc4d9835 Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents: 1165
diff changeset
589 io_adjust_cycles(gen->io.ports, context->current_cycle, deduction);
9170fc4d9835 Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents: 1165
diff changeset
590 io_adjust_cycles(gen->io.ports+1, context->current_cycle, deduction);
9170fc4d9835 Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents: 1165
diff changeset
591 io_adjust_cycles(gen->io.ports+2, context->current_cycle, deduction);
1610
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
592 if (gen->mapper_type == MAPPER_JCART) {
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
593 jcart_adjust_cycles(gen, deduction);
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
594 }
1170
9170fc4d9835 Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents: 1165
diff changeset
595 context->current_cycle -= deduction;
9170fc4d9835 Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents: 1165
diff changeset
596 z80_adjust_cycles(z_context, deduction);
1902
32a3aa7b4a45 Fix YM2612 busy flag timing
Michael Pavone <pavone@retrodev.com>
parents: 1901
diff changeset
597 ym_adjust_cycles(gen->ym, deduction);
1909
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
598 if (gen->ym->vgm) {
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
599 vgm_adjust_cycles(gen->ym->vgm, deduction);
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
600 }
1170
9170fc4d9835 Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents: 1165
diff changeset
601 gen->psg->cycles -= deduction;
1556
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
602 if (gen->reset_cycle != CYCLE_NEVER) {
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
603 gen->reset_cycle -= deduction;
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
604 }
1946
c3c62dbf1ceb WIP netplay support
Michael Pavone <pavone@retrodev.com>
parents: 1932
diff changeset
605 event_cycle_adjust(mclks, deduction);
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
606 if (gen->expansion) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
607 scd_adjust_cycle(gen->expansion, deduction);
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
608 }
1971
80920c21bb52 Add an event log soft flush and call it twice per frame in between hard flushes to netplay latency when there are insufficient hardware updates to flush packets in the middle of a frame
Michael Pavone <pavone@retrodev.com>
parents: 1954
diff changeset
609 gen->last_flush_cycle -= deduction;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
610 }
1971
80920c21bb52 Add an event log soft flush and call it twice per frame in between hard flushes to netplay latency when there are insufficient hardware updates to flush packets in the middle of a frame
Michael Pavone <pavone@retrodev.com>
parents: 1954
diff changeset
611 } else if (mclks - gen->last_flush_cycle > gen->soft_flush_cycles) {
80920c21bb52 Add an event log soft flush and call it twice per frame in between hard flushes to netplay latency when there are insufficient hardware updates to flush packets in the middle of a frame
Michael Pavone <pavone@retrodev.com>
parents: 1954
diff changeset
612 event_soft_flush(mclks);
80920c21bb52 Add an event log soft flush and call it twice per frame in between hard flushes to netplay latency when there are insufficient hardware updates to flush packets in the middle of a frame
Michael Pavone <pavone@retrodev.com>
parents: 1954
diff changeset
613 gen->last_flush_cycle = mclks;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
614 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
615 gen->frame_end = vdp_cycles_to_frame_end(v_context);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
616 context->sync_cycle = gen->frame_end;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
617 //printf("Set sync cycle to: %d @ %d, vcounter: %d, hslot: %d\n", context->sync_cycle, context->current_cycle, v_context->vcounter, v_context->hslot);
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
618 if (!address && (gen->header.enter_debugger || gen->header.save_state)) {
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
619 context->sync_cycle = context->current_cycle + 1;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
620 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
621 adjust_int_cycle(context, v_context);
1556
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
622 if (gen->reset_cycle < context->target_cycle) {
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
623 context->target_cycle = gen->reset_cycle;
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
624 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
625 if (address) {
2424
767ec72acca7 Avoid conflicts between watchpoints and normal debugger entry
Michael Pavone <pavone@retrodev.com>
parents: 2391
diff changeset
626 if (gen->header.enter_debugger || context->wp_hit) {
767ec72acca7 Avoid conflicts between watchpoints and normal debugger entry
Michael Pavone <pavone@retrodev.com>
parents: 2391
diff changeset
627 if (!context->wp_hit) {
767ec72acca7 Avoid conflicts between watchpoints and normal debugger entry
Michael Pavone <pavone@retrodev.com>
parents: 2391
diff changeset
628 gen->header.enter_debugger = 0;
767ec72acca7 Avoid conflicts between watchpoints and normal debugger entry
Michael Pavone <pavone@retrodev.com>
parents: 2391
diff changeset
629 }
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
630 #ifndef IS_LIB
2033
894bf99a13f1 Make ui.enter_debuger respect which debuger is active
Michael Pavone <pavone@retrodev.com>
parents: 2025
diff changeset
631 if (gen->header.debugger_type == DEBUGGER_NATIVE) {
894bf99a13f1 Make ui.enter_debuger respect which debuger is active
Michael Pavone <pavone@retrodev.com>
parents: 2025
diff changeset
632 debugger(context, address);
894bf99a13f1 Make ui.enter_debuger respect which debuger is active
Michael Pavone <pavone@retrodev.com>
parents: 2025
diff changeset
633 } else {
894bf99a13f1 Make ui.enter_debuger respect which debuger is active
Michael Pavone <pavone@retrodev.com>
parents: 2025
diff changeset
634 gdb_debug_enter(context, address);
894bf99a13f1 Make ui.enter_debuger respect which debuger is active
Michael Pavone <pavone@retrodev.com>
parents: 2025
diff changeset
635 }
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
636 #endif
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
637 }
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
638 #ifdef NEW_CORE
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
639 if (gen->header.save_state) {
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
640 #else
1440
7d4483944d4d Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents: 1433
diff changeset
641 if (gen->header.save_state && (z_context->pc || !z_context->native_pc || z_context->reset || !z_context->busreq)) {
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
642 #endif
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
643 uint8_t slot = gen->header.save_state - 1;
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
644 gen->header.save_state = 0;
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
645 #ifndef NEW_CORE
1440
7d4483944d4d Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents: 1433
diff changeset
646 if (z_context->native_pc && !z_context->reset) {
7d4483944d4d Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents: 1433
diff changeset
647 //advance Z80 core to the start of an instruction
7d4483944d4d Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents: 1433
diff changeset
648 while (!z_context->pc)
7d4483944d4d Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents: 1433
diff changeset
649 {
2184
408fb8a7e990 Implement argumentless variant of z80 debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2179
diff changeset
650 sync_z80(gen, z_context->current_cycle + MCLKS_PER_Z80);
1440
7d4483944d4d Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents: 1433
diff changeset
651 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
652 }
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
653 #endif
1946
c3c62dbf1ceb WIP netplay support
Michael Pavone <pavone@retrodev.com>
parents: 1932
diff changeset
654 char *save_path = slot >= SERIALIZE_SLOT ? NULL : get_slot_name(&gen->header, slot, use_native_states ? "state" : "gst");
c3c62dbf1ceb WIP netplay support
Michael Pavone <pavone@retrodev.com>
parents: 1932
diff changeset
655 if (use_native_states || slot >= SERIALIZE_SLOT) {
1428
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
656 serialize_buffer state;
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
657 init_serialize(&state);
1946
c3c62dbf1ceb WIP netplay support
Michael Pavone <pavone@retrodev.com>
parents: 1932
diff changeset
658 genesis_serialize(gen, &state, address, slot != EVENTLOG_SLOT);
1690
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
659 if (slot == SERIALIZE_SLOT) {
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
660 gen->serialize_tmp = state.data;
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
661 gen->serialize_size = state.size;
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
662 context->sync_cycle = context->current_cycle;
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
663 context->should_return = 1;
1946
c3c62dbf1ceb WIP netplay support
Michael Pavone <pavone@retrodev.com>
parents: 1932
diff changeset
664 } else if (slot == EVENTLOG_SLOT) {
c3c62dbf1ceb WIP netplay support
Michael Pavone <pavone@retrodev.com>
parents: 1932
diff changeset
665 event_state(context->current_cycle, &state);
1690
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
666 } else {
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
667 save_to_file(&state, save_path);
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
668 free(state.data);
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
669 }
1428
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
670 } else {
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
671 save_gst(gen, save_path, address);
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
672 }
1849
6b5147f08846 Don't print out a message when saving a state to the serialization pseudo-slot
Michael Pavone <pavone@retrodev.com>
parents: 1848
diff changeset
673 if (slot != SERIALIZE_SLOT) {
6b5147f08846 Don't print out a message when saving a state to the serialization pseudo-slot
Michael Pavone <pavone@retrodev.com>
parents: 1848
diff changeset
674 debug_message("Saved state to %s\n", save_path);
6b5147f08846 Don't print out a message when saving a state to the serialization pseudo-slot
Michael Pavone <pavone@retrodev.com>
parents: 1848
diff changeset
675 }
1478
da1dce39e846 Refactored save slot related logic to reduce duplication and allow reuse in new UI. Get state loading/saving mostly working in new UI
Michael Pavone <pavone@retrodev.com>
parents: 1471
diff changeset
676 free(save_path);
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
677 } else if(gen->header.save_state) {
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
678 context->sync_cycle = context->current_cycle + 1;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
679 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
680 }
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
681 return context;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
682 }
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
683
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
684 static void sync_sound_pico(genesis_context * gen, uint32_t target)
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
685 {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
686 while (target > gen->psg->cycles && target - gen->psg->cycles > MAX_SOUND_CYCLES)
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
687 {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
688 uint32_t cur_target = gen->psg->cycles + MAX_SOUND_CYCLES;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
689 psg_run(gen->psg, cur_target);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
690 pico_pcm_run(gen->adpcm, cur_target);
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
691 if (gen->ymz) {
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
692 ymz263b_run(gen->ymz, cur_target);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
693 }
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
694 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
695 psg_run(gen->psg, target);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
696 pico_pcm_run(gen->adpcm, target);
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
697 if (gen->ymz) {
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
698 ymz263b_run(gen->ymz, target);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
699 }
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
700 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
701
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
702 static void adjust_int_cycle_pico(m68k_context *context, vdp_context *v_context)
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
703 {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
704 genesis_context *gen = context->system;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
705 if (context->sync_cycle - context->current_cycle > gen->max_cycles) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
706 context->sync_cycle = context->current_cycle + gen->max_cycles;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
707 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
708 context->int_cycle = CYCLE_NEVER;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
709 uint8_t mask = context->status & 0x7;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
710 if (mask < 6) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
711 uint32_t next_vint = vdp_next_vint(v_context);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
712 if (next_vint != CYCLE_NEVER) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
713 context->int_cycle = next_vint;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
714 context->int_num = 6;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
715 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
716 if (mask < 5) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
717 uint32_t next_hint = vdp_next_hint(v_context);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
718 if (next_hint != CYCLE_NEVER) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
719 next_hint = next_hint < context->current_cycle ? context->current_cycle : next_hint;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
720 if (next_hint < context->int_cycle) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
721 context->int_cycle = next_hint;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
722 context->int_num = 5;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
723
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
724 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
725 }
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
726 if (mask < 4) {
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
727 if (v_context->regs[REG_MODE_3] & BIT_EINT_EN) {
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
728 uint32_t next_eint_port0 = io_next_interrupt(gen->io.ports, context->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
729 uint32_t next_eint_port1 = io_next_interrupt(gen->io.ports + 1, context->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
730 uint32_t next_eint_port2 = io_next_interrupt(gen->io.ports + 2, context->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
731 uint32_t next_eint = next_eint_port0 < next_eint_port1
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
732 ? (next_eint_port0 < next_eint_port2 ? next_eint_port0 : next_eint_port2)
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
733 : (next_eint_port1 < next_eint_port2 ? next_eint_port1 : next_eint_port2);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
734 if (next_eint != CYCLE_NEVER) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
735 next_eint = next_eint < context->current_cycle ? context->current_cycle : next_eint;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
736 if (next_eint < context->int_cycle) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
737 context->int_cycle = next_eint;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
738 context->int_num = 2;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
739 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
740 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
741 }
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
742 if (mask < 3) {
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
743 uint32_t next_pcm_int = pico_pcm_next_int(gen->adpcm);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
744 if (next_pcm_int != CYCLE_NEVER && next_pcm_int < context->int_cycle) {
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
745 context->int_cycle = next_pcm_int;
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
746 context->int_num = 3;
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
747 }
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
748
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
749 if (mask < 2 && gen->ymz) {
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
750 uint32_t ymz_int = ymz263b_next_int(gen->ymz);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
751 if (ymz_int < context->int_cycle) {
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
752 context->int_cycle = ymz_int;
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
753 context->int_num = 2;
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
754 }
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
755 }
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
756 }
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
757 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
758 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
759 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
760 if (context->int_cycle > context->current_cycle && context->int_pending == INT_PENDING_SR_CHANGE) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
761 context->int_pending = INT_PENDING_NONE;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
762 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
763 /*if (context->int_cycle != old_int_cycle) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
764 printf("int cycle changed to: %d, level: %d @ %d(%d), frame: %d, vcounter: %d, hslot: %d, mask: %d, hint_counter: %d\n", context->int_cycle, context->int_num, v_context->cycles, context->current_cycle, v_context->frame, v_context->vcounter, v_context->hslot, context->status & 0x7, v_context->hint_counter);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
765 old_int_cycle = context->int_cycle;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
766 }*/
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
767
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
768 if (context->status & M68K_STATUS_TRACE || context->trace_pending) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
769 context->target_cycle = context->current_cycle;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
770 return;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
771 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
772
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
773 context->target_cycle = context->int_cycle < context->sync_cycle ? context->int_cycle : context->sync_cycle;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
774 if (context->should_return || gen->header.enter_debugger || context->wp_hit) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
775 context->target_cycle = context->current_cycle;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
776 } else if (context->target_cycle < context->current_cycle) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
777 //Changes to SR can result in an interrupt cycle that's in the past
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
778 //This can cause issues with the implementation of STOP though
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
779 context->target_cycle = context->current_cycle;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
780 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
781 if (context->target_cycle == context->int_cycle) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
782 //Currently delays from Z80 access and refresh are applied only when we sync
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
783 //this can cause extra latency when it comes to interrupts
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
784 //to prevent this code forces some extra synchronization in the period immediately before an interrupt
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
785 if ((context->target_cycle - context->current_cycle) > gen->int_latency_prev1) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
786 context->target_cycle = context->sync_cycle = context->int_cycle - gen->int_latency_prev1;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
787 } else if ((context->target_cycle - context->current_cycle) > gen->int_latency_prev2) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
788 context->target_cycle = context->sync_cycle = context->int_cycle - gen->int_latency_prev2;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
789 } else {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
790 context->target_cycle = context->sync_cycle = context->current_cycle;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
791 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
792
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
793 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
794 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
795
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
796 static m68k_context* sync_components_pico(m68k_context * context, uint32_t address)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
797 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
798 genesis_context * gen = context->system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
799 vdp_context * v_context = gen->vdp;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
800 if (gen->bus_busy) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
801 gen_update_refresh_no_wait(context);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
802 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
803 gen_update_refresh(context);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
804 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
805
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
806 uint32_t mclks = context->current_cycle;
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
807 sync_sound_pico(gen, mclks);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
808 vdp_run_context(v_context, mclks);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
809 if (mclks >= gen->reset_cycle) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
810 gen->reset_requested = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
811 context->should_return = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
812 gen->reset_cycle = CYCLE_NEVER;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
813 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
814 if (v_context->frame != gen->last_frame) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
815 #ifndef IS_LIB
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
816 if (gen->psg->scope) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
817 scope_render(gen->psg->scope);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
818 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
819 #endif
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
820 //printf("reached frame end %d | MCLK Cycles: %d, Target: %d, VDP cycles: %d, vcounter: %d, hslot: %d\n", gen->last_frame, mclks, gen->frame_end, v_context->cycles, v_context->vcounter, v_context->hslot);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
821 uint32_t elapsed = v_context->frame - gen->last_frame;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
822 gen->last_frame = v_context->frame;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
823 event_flush(mclks);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
824 gen->last_flush_cycle = mclks;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
825 if (gen->header.enter_debugger_frames) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
826 if (elapsed >= gen->header.enter_debugger_frames) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
827 gen->header.enter_debugger_frames = 0;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
828 gen->header.enter_debugger = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
829 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
830 gen->header.enter_debugger_frames -= elapsed;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
831 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
832 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
833
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
834 if(exit_after){
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
835 if (elapsed >= exit_after) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
836 exit(0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
837 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
838 exit_after -= elapsed;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
839 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
840 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
841 if (context->current_cycle > MAX_NO_ADJUST) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
842 uint32_t deduction = mclks - ADJUST_BUFFER;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
843 vdp_adjust_cycles(v_context, deduction);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
844 if (gen->mapper_type == MAPPER_JCART) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
845 jcart_adjust_cycles(gen, deduction);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
846 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
847 context->current_cycle -= deduction;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
848 if (gen->psg->vgm) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
849 vgm_adjust_cycles(gen->psg->vgm, deduction);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
850 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
851 gen->psg->cycles -= deduction;
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
852 gen->adpcm->cycle -= deduction;
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
853 if (gen->ymz) {
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
854 gen->ymz->cycle -= deduction;
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
855 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
856 if (gen->reset_cycle != CYCLE_NEVER) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
857 gen->reset_cycle -= deduction;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
858 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
859 event_cycle_adjust(mclks, deduction);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
860 if (gen->expansion) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
861 scd_adjust_cycle(gen->expansion, deduction);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
862 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
863 gen->last_flush_cycle -= deduction;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
864 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
865 } else if (mclks - gen->last_flush_cycle > gen->soft_flush_cycles) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
866 event_soft_flush(mclks);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
867 gen->last_flush_cycle = mclks;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
868 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
869 gen->frame_end = vdp_cycles_to_frame_end(v_context);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
870 context->sync_cycle = gen->frame_end;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
871 //printf("Set sync cycle to: %d @ %d, vcounter: %d, hslot: %d\n", context->sync_cycle, context->current_cycle, v_context->vcounter, v_context->hslot);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
872 if (!address && (gen->header.enter_debugger || gen->header.save_state)) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
873 context->sync_cycle = context->current_cycle + 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
874 }
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
875 adjust_int_cycle_pico(context, v_context);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
876 if (gen->reset_cycle < context->target_cycle) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
877 context->target_cycle = gen->reset_cycle;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
878 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
879 if (address) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
880 if (gen->header.enter_debugger || context->wp_hit) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
881 if (!context->wp_hit) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
882 gen->header.enter_debugger = 0;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
883 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
884 #ifndef IS_LIB
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
885 if (gen->header.debugger_type == DEBUGGER_NATIVE) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
886 debugger(context, address);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
887 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
888 gdb_debug_enter(context, address);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
889 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
890 #endif
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
891 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
892 if (gen->header.save_state) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
893 uint8_t slot = gen->header.save_state - 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
894 gen->header.save_state = 0;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
895 char *save_path = slot >= SERIALIZE_SLOT ? NULL : get_slot_name(&gen->header, slot, use_native_states ? "state" : "gst");
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
896 if (use_native_states || slot >= SERIALIZE_SLOT) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
897 serialize_buffer state;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
898 init_serialize(&state);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
899 genesis_serialize(gen, &state, address, slot != EVENTLOG_SLOT);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
900 if (slot == SERIALIZE_SLOT) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
901 gen->serialize_tmp = state.data;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
902 gen->serialize_size = state.size;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
903 context->sync_cycle = context->current_cycle;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
904 context->should_return = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
905 } else if (slot == EVENTLOG_SLOT) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
906 event_state(context->current_cycle, &state);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
907 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
908 save_to_file(&state, save_path);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
909 free(state.data);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
910 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
911 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
912 save_gst(gen, save_path, address);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
913 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
914 if (slot != SERIALIZE_SLOT) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
915 debug_message("Saved state to %s\n", save_path);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
916 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
917 free(save_path);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
918 } else if(gen->header.save_state) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
919 context->sync_cycle = context->current_cycle + 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
920 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
921 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
922 return context;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
923 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
924
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
925 static m68k_context *int_ack(m68k_context *context)
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
926 {
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
927 genesis_context * gen = context->system;
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
928 if ((gen->header.type != SYSTEM_PICO && gen->header.type != SYSTEM_COPERA) || context->int_num > 3) {
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
929 vdp_context * v_context = gen->vdp;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
930 //printf("acknowledging %d @ %d:%d, vcounter: %d, hslot: %d\n", context->int_ack, context->current_cycle, v_context->cycles, v_context->vcounter, v_context->hslot);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
931 vdp_run_context(v_context, context->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
932 vdp_int_ack(v_context);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
933 }
2354
a773b8f09292 Remove old refresh hack that is causing VDPFifoTesting to have a failed test
Michael Pavone <pavone@retrodev.com>
parents: 2350
diff changeset
934
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
935 //the Genesis responds to these exclusively with !VPA which means its a slow
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
936 //6800 operation. documentation says these can take between 10 and 19 cycles.
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
937 //actual results measurements seem to suggest it's actually between 9 and 18
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
938 //Base 68K core has added 4 cycles for a normal int ack cycle already
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
939 //We add 5 + the current cycle count (in 68K cycles) mod 10 to simulate the
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
940 //additional variable delay from the use of the 6800 cycle
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
941 uint32_t cycle_count = context->current_cycle / context->options->gen.clock_divider;
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
942 context->current_cycle += 5 + (cycle_count % 10);
2354
a773b8f09292 Remove old refresh hack that is causing VDPFifoTesting to have a failed test
Michael Pavone <pavone@retrodev.com>
parents: 2350
diff changeset
943
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
944 return context;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
945 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
946
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
947 static m68k_context * vdp_port_write(uint32_t vdp_port, m68k_context * context, uint16_t value)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
948 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
949 if (vdp_port & 0x2700E0) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
950 fatal_error("machine freeze due to write to address %X\n", 0xC00000 | vdp_port);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
951 }
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
952 genesis_context * gen = context->system;
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
953 if (!gen->vdp_unlocked) {
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
954 fatal_error("machine freeze due to VDP write to %X without TMSS unlock\n", 0xC00000 | vdp_port);
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
955 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
956 vdp_port &= 0x1F;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
957 //printf("vdp_port write: %X, value: %X, cycle: %d\n", vdp_port, value, context->current_cycle);
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
958
1372
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
959 //do refresh check here so we can avoid adding a penalty for a refresh that happens during a VDP access
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
960 gen_update_refresh_free_access(context);
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
961
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
962 if (gen->header.type == SYSTEM_PICO || gen->header.type == SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
963 sync_components_pico(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
964 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
965 sync_components(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
966 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
967 vdp_context *v_context = gen->vdp;
1374
8f404b1fa572 Go back to resetting the refresh counter after a DMA. Probably not quite correct as it is probably reset on VDP triggered refresh, but this is close enough for now given the general limitations with my refresh code. VDP FIFO Testing seems to be passing 100% reliably again (was occassionally failing still with the last commit)
Michael Pavone <pavone@retrodev.com>
parents: 1373
diff changeset
968 uint32_t before_cycle = v_context->cycles;
2391
664c3e749428 Restore reset of refresh counter after DMA since its removal caused some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2384
diff changeset
969 uint8_t did_dma = 0;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
970 if (vdp_port < 0x10) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
971 int blocked;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
972 if (vdp_port < 4) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
973 while (vdp_data_port_write(v_context, value) < 0) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
974 while(v_context->flags & FLAG_DMA_RUN) {
2391
664c3e749428 Restore reset of refresh counter after DMA since its removal caused some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2384
diff changeset
975 did_dma = 1;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
976 vdp_run_dma_done(v_context, gen->frame_end);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
977 if (v_context->cycles >= gen->frame_end) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
978 uint32_t cycle_diff = v_context->cycles - context->current_cycle;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
979 uint32_t m68k_cycle_diff = (cycle_diff / MCLKS_PER_68K) * MCLKS_PER_68K;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
980 if (m68k_cycle_diff < cycle_diff) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
981 m68k_cycle_diff += MCLKS_PER_68K;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
982 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
983 context->current_cycle += m68k_cycle_diff;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
984 gen->bus_busy = 1;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
985 if (gen->header.type == SYSTEM_PICO || gen->header.type == SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
986 sync_components_pico(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
987 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
988 sync_components(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
989 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
990 gen->bus_busy = 0;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
991 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
992 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
993 //context->current_cycle = v_context->cycles;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
994 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
995 } else if(vdp_port < 8) {
1371
5b20840711c1 Remove HINT_FUDGE and make a small adjustment to how VDP syncs with rest of system instead. Worse results on CRAM dot issue, but much less of a hack
Michael Pavone <pavone@retrodev.com>
parents: 1364
diff changeset
996 vdp_run_context_full(v_context, context->current_cycle);
1373
7cfc9d532e34 Fixed regression from VDP sync changes. Direct color DMA demos are now achieving stable sync again
Michael Pavone <pavone@retrodev.com>
parents: 1372
diff changeset
997 before_cycle = v_context->cycles;
2227
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2194
diff changeset
998 blocked = vdp_control_port_write(v_context, value, context->current_cycle);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
999 if (blocked) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1000 while (blocked) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1001 while(v_context->flags & FLAG_DMA_RUN) {
2391
664c3e749428 Restore reset of refresh counter after DMA since its removal caused some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2384
diff changeset
1002 did_dma = 1;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1003 vdp_run_dma_done(v_context, gen->frame_end);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1004 if (v_context->cycles >= gen->frame_end) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1005 uint32_t cycle_diff = v_context->cycles - context->current_cycle;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1006 uint32_t m68k_cycle_diff = (cycle_diff / MCLKS_PER_68K) * MCLKS_PER_68K;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1007 if (m68k_cycle_diff < cycle_diff) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1008 m68k_cycle_diff += MCLKS_PER_68K;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1009 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1010 context->current_cycle += m68k_cycle_diff;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1011 gen->bus_busy = 1;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1012 if (gen->header.type == SYSTEM_PICO || gen->header.type == SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1013 sync_components_pico(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1014 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1015 sync_components(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1016 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1017 gen->bus_busy = 0;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1018 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1019 }
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
1020
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1021 if (blocked < 0) {
2227
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2194
diff changeset
1022 blocked = vdp_control_port_write(v_context, value, context->current_cycle);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1023 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1024 blocked = 0;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1025 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1026 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1027 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1028 context->sync_cycle = gen->frame_end = vdp_cycles_to_frame_end(v_context);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1029 //printf("Set sync cycle to: %d @ %d, vcounter: %d, hslot: %d\n", context->sync_cycle, context->current_cycle, v_context->vcounter, v_context->hslot);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1030 if (gen->header.type == SYSTEM_PICO || gen->header.type == SYSTEM_COPERA) {
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1031 adjust_int_cycle_pico(context, v_context);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1032 } else {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1033 adjust_int_cycle(context, v_context);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1034 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1035 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1036 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1037 fatal_error("Illegal write to HV Counter port %X\n", vdp_port);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1038 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1039 if (v_context->cycles != before_cycle) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1040 //printf("68K paused for %d (%d) cycles at cycle %d (%d) for write\n", v_context->cycles - context->current_cycle, v_context->cycles - before_cycle, context->current_cycle, before_cycle);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1041 uint32_t cycle_diff = v_context->cycles - context->current_cycle;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1042 uint32_t m68k_cycle_diff = (cycle_diff / MCLKS_PER_68K) * MCLKS_PER_68K;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1043 if (m68k_cycle_diff < cycle_diff) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1044 m68k_cycle_diff += MCLKS_PER_68K;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1045 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1046 context->current_cycle += m68k_cycle_diff;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1047 if (gen->header.type == SYSTEM_GENESIS) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1048 //Lock the Z80 out of the bus until the VDP access is complete
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1049 gen->bus_busy = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1050 sync_z80(gen, v_context->cycles);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1051 gen->bus_busy = 0;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1052 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1053 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1054 } else if (vdp_port < 0x18) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1055 psg_write(gen->psg, value);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1056 } else {
1318
bfdd450e7dea Initial work on handling the 128KB VRAM mode bit and some basic prep work for VDP test register support
Michael Pavone <pavone@retrodev.com>
parents: 1316
diff changeset
1057 vdp_test_port_write(gen->vdp, value);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1058 }
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1059
2391
664c3e749428 Restore reset of refresh counter after DMA since its removal caused some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2384
diff changeset
1060 if (did_dma) {
664c3e749428 Restore reset of refresh counter after DMA since its removal caused some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2384
diff changeset
1061 gen->refresh_counter = 0;
664c3e749428 Restore reset of refresh counter after DMA since its removal caused some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2384
diff changeset
1062 gen->last_sync_cycle = context->current_cycle;
664c3e749428 Restore reset of refresh counter after DMA since its removal caused some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2384
diff changeset
1063 } else {
664c3e749428 Restore reset of refresh counter after DMA since its removal caused some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2384
diff changeset
1064 //refresh may have happened while we were waiting on the VDP,
664c3e749428 Restore reset of refresh counter after DMA since its removal caused some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2384
diff changeset
1065 //so advance refresh_counter but don't add any delays
664c3e749428 Restore reset of refresh counter after DMA since its removal caused some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2384
diff changeset
1066 gen_update_refresh_no_wait(context);
664c3e749428 Restore reset of refresh counter after DMA since its removal caused some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2384
diff changeset
1067 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1068 return context;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1069 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1070
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1071 static m68k_context * vdp_port_write_b(uint32_t vdp_port, m68k_context * context, uint8_t value)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1072 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1073 return vdp_port_write(vdp_port, context, vdp_port < 0x10 ? value | value << 8 : ((vdp_port & 1) ? value : 0));
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1074 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1075
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1076 static void * z80_vdp_port_write(uint32_t vdp_port, void * vcontext, uint8_t value)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1077 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1078 z80_context * context = vcontext;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1079 genesis_context * gen = context->system;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1080 vdp_port &= 0xFF;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1081 if (vdp_port & 0xE0) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1082 fatal_error("machine freeze due to write to Z80 address %X\n", 0x7F00 | vdp_port);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1083 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1084 if (vdp_port < 0x10) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1085 //These probably won't currently interact well with the 68K accessing the VDP
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1086 if (vdp_port < 4) {
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1087 vdp_run_context(gen->vdp, context->Z80_CYCLE);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1088 vdp_data_port_write(gen->vdp, value << 8 | value);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1089 } else if (vdp_port < 8) {
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1090 vdp_run_context_full(gen->vdp, context->Z80_CYCLE);
2227
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2194
diff changeset
1091 vdp_control_port_write(gen->vdp, value << 8 | value, context->Z80_CYCLE);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1092 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1093 fatal_error("Illegal write to HV Counter port %X\n", vdp_port);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1094 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1095 } else if (vdp_port < 0x18) {
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1096 sync_sound(gen, context->Z80_CYCLE);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1097 psg_write(gen->psg, value);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1098 } else {
2327
9dd27530c570 Fix Z80 access to VDP debug register
Michael Pavone <pavone@retrodev.com>
parents: 2302
diff changeset
1099 vdp_test_port_write(gen->vdp, value << 8 | value);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1100 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1101 return context;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1102 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1103
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1104 static uint16_t vdp_port_read(uint32_t vdp_port, m68k_context * context)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1105 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1106 if (vdp_port & 0x2700E0) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1107 fatal_error("machine freeze due to read from address %X\n", 0xC00000 | vdp_port);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1108 }
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1109 genesis_context *gen = context->system;
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1110 if (!gen->vdp_unlocked) {
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1111 fatal_error("machine freeze due to VDP read from %X without TMSS unlock\n", 0xC00000 | vdp_port);
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1112 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1113 vdp_port &= 0x1F;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1114 uint16_t value;
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1115
1372
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
1116 //do refresh check here so we can avoid adding a penalty for a refresh that happens during a VDP access
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
1117 gen_update_refresh_free_access(context);
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1118
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1119 if (gen->header.type == SYSTEM_PICO || gen->header.type == SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1120 sync_components_pico(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1121 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1122 sync_components(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1123 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1124 vdp_context * v_context = gen->vdp;
2227
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2194
diff changeset
1125 uint32_t before_cycle = context->current_cycle;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1126 if (vdp_port < 0x10) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1127 if (vdp_port < 4) {
2227
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2194
diff changeset
1128 value = vdp_data_port_read(v_context, &context->current_cycle, MCLKS_PER_68K);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1129 } else if(vdp_port < 8) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1130 value = vdp_control_port_read(v_context);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1131 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1132 value = vdp_hv_counter_read(v_context);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1133 //printf("HV Counter: %X at cycle %d\n", value, v_context->cycles);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1134 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1135 } else if (vdp_port < 0x18){
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1136 fatal_error("Illegal read from PSG port %X\n", vdp_port);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1137 } else {
1869
dc94354eab66 Fix accuracy bugs used by Novedicus to detect BlastEm/Exodus
Michael Pavone <pavone@retrodev.com>
parents: 1849
diff changeset
1138 value = get_open_bus_value(&gen->header);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1139 }
2227
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2194
diff changeset
1140 if (context->current_cycle != before_cycle) {
2021
270a4c875e0a Backed out changeset 96971b673f51
Michael Pavone <pavone@retrodev.com>
parents: 2012
diff changeset
1141 //printf("68K paused for %d (%d) cycles at cycle %d (%d) for read\n", v_context->cycles - context->current_cycle, v_context->cycles - before_cycle, context->current_cycle, before_cycle);
270a4c875e0a Backed out changeset 96971b673f51
Michael Pavone <pavone@retrodev.com>
parents: 2012
diff changeset
1142 //Lock the Z80 out of the bus until the VDP access is complete
270a4c875e0a Backed out changeset 96971b673f51
Michael Pavone <pavone@retrodev.com>
parents: 2012
diff changeset
1143 genesis_context *gen = context->system;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1144 if (gen->header.type == SYSTEM_GENESIS) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1145 gen->bus_busy = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1146 sync_z80(gen, context->current_cycle);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1147 gen->bus_busy = 0;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1148 }
2021
270a4c875e0a Backed out changeset 96971b673f51
Michael Pavone <pavone@retrodev.com>
parents: 2012
diff changeset
1149 }
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1150
1372
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
1151 //refresh may have happened while we were waiting on the VDP,
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
1152 //so advance refresh_counter but don't add any delays
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
1153 gen_update_refresh_no_wait(context);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1154 return value;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1155 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1156
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1157 static uint8_t vdp_port_read_b(uint32_t vdp_port, m68k_context * context)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1158 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1159 uint16_t value = vdp_port_read(vdp_port, context);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1160 if (vdp_port & 1) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1161 return value;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1162 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1163 return value >> 8;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1164 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1165 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1166
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1167 static uint8_t z80_vdp_port_read(uint32_t vdp_port, void * vcontext)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1168 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1169 z80_context * context = vcontext;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1170 if (vdp_port & 0xE0) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1171 fatal_error("machine freeze due to read from Z80 address %X\n", 0x7F00 | vdp_port);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1172 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1173 genesis_context * gen = context->system;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1174 //VDP access goes over the 68K bus like a bank area access
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1175 //typical delay from bus arbitration
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1176 context->Z80_CYCLE += 3 * MCLKS_PER_Z80;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1177 //TODO: add cycle for an access right after a previous one
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1178 //TODO: Below cycle time is an estimate based on the time between 68K !BG goes low and Z80 !MREQ goes high
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1179 // Needs a new logic analyzer capture to get the actual delay on the 68K side
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1180 gen->m68k->current_cycle += 8 * MCLKS_PER_68K;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1181
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1182
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1183 vdp_port &= 0x1F;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1184 uint16_t ret;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1185 if (vdp_port < 0x10) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1186 //These probably won't currently interact well with the 68K accessing the VDP
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1187 vdp_run_context(gen->vdp, context->Z80_CYCLE);
2227
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2194
diff changeset
1188 uint32_t before = context->Z80_CYCLE;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1189 if (vdp_port < 4) {
2227
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2194
diff changeset
1190 ret = vdp_data_port_read(gen->vdp, &context->Z80_CYCLE, MCLKS_PER_Z80);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1191 } else if (vdp_port < 8) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1192 ret = vdp_control_port_read(gen->vdp);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1193 } else {
1316
3185438e0134 Fix copy pasta error in handling of Z80 VDP port reads. HV counter reads are not illegal writes =P. Fixes immediate exit in Overdrive II, though other problems remain
Michael Pavone <pavone@retrodev.com>
parents: 1309
diff changeset
1194 ret = vdp_hv_counter_read(gen->vdp);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1195 }
2227
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2194
diff changeset
1196 if (context->Z80_CYCLE != before) {
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2194
diff changeset
1197 gen->m68k->current_cycle += context->Z80_CYCLE - before;
eaaf28af3c94 Implement VDP read latency and invalid write delays revealed by Ti_'s instruction timing ROM
Michael Pavone <pavone@retrodev.com>
parents: 2194
diff changeset
1198 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1199 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1200 //TODO: Figure out the correct value today
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1201 ret = 0xFFFF;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1202 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1203 return vdp_port & 1 ? ret : ret >> 8;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1204 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1205
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1206 //TODO: Move this inside the system context
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1207 static uint32_t zram_counter = 0;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1208
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1209 static m68k_context * io_write(uint32_t location, m68k_context * context, uint8_t value)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1210 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1211 genesis_context * gen = context->system;
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1212
2012
b05295c2ad04 Small improvement to refresh cycle approximation
Mike Pavone <pavone@retrodev.com>
parents: 1998
diff changeset
1213 //do refresh check here so we can avoid adding a penalty for a refresh that happens during an IO area access
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
1214 gen_update_refresh_free_access(context);
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1215
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1216 if (location < 0x10000) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1217 //Access to Z80 memory incurs a one 68K cycle wait state
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1218 context->current_cycle += MCLKS_PER_68K;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1219 if (!z80_enabled || z80_get_busack(gen->z80, context->current_cycle)) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1220 location &= 0x7FFF;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1221 if (location < 0x4000) {
1104
4224980a5f84 Fix the previous WIP commit. Quick tests suggests things are no more broken than before now.
Michael Pavone <pavone@retrodev.com>
parents: 1103
diff changeset
1222 gen->zram[location & 0x1FFF] = value;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1223 #ifndef NO_Z80
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1224 z80_handle_code_write(location & 0x1FFF, gen->z80);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1225 #endif
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1226 } else if (location < 0x6000) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1227 sync_sound(gen, context->current_cycle);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1228 if (location & 1) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1229 ym_data_write(gen->ym, value);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1230 } else if(location & 2) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1231 ym_address_write_part2(gen->ym, value);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1232 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1233 ym_address_write_part1(gen->ym, value);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1234 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1235 } else if (location == 0x6000) {
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1236 gen->z80_bank_reg = (gen->z80_bank_reg >> 1 | value << 8) & 0x1FF;
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1237 if (gen->z80_bank_reg < 0x80) {
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1238 gen->z80->mem_pointers[1] = (gen->z80_bank_reg << 15) + ((char *)gen->z80->mem_pointers[2]);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1239 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1240 gen->z80->mem_pointers[1] = NULL;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1241 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1242 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1243 fatal_error("68K write to unhandled Z80 address %X\n", location);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1244 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1245 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1246 } else {
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1247 if (location < 0x10100) {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1248 switch(location >> 1 & 0xFF)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1249 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1250 case 0x1:
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1251 io_data_write(gen->io.ports, value, context->current_cycle);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1252 break;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1253 case 0x2:
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1254 io_data_write(gen->io.ports+1, value, context->current_cycle);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1255 break;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1256 case 0x3:
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1257 io_data_write(gen->io.ports+2, value, context->current_cycle);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1258 break;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1259 case 0x4:
1348
040c5600e2d9 Implemented slow rise time of IO pins set as inputs, but not driven by device. Fixes input in Decap Attack and possibly other games with buggy controller code
Michael Pavone <pavone@retrodev.com>
parents: 1333
diff changeset
1260 io_control_write(gen->io.ports, value, context->current_cycle);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1261 break;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1262 case 0x5:
1348
040c5600e2d9 Implemented slow rise time of IO pins set as inputs, but not driven by device. Fixes input in Decap Attack and possibly other games with buggy controller code
Michael Pavone <pavone@retrodev.com>
parents: 1333
diff changeset
1263 io_control_write(gen->io.ports+1, value, context->current_cycle);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1264 break;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1265 case 0x6:
1348
040c5600e2d9 Implemented slow rise time of IO pins set as inputs, but not driven by device. Fixes input in Decap Attack and possibly other games with buggy controller code
Michael Pavone <pavone@retrodev.com>
parents: 1333
diff changeset
1266 io_control_write(gen->io.ports+2, value, context->current_cycle);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1267 break;
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1268 case 0x7:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1269 io_tx_write(gen->io.ports, value, context->current_cycle);
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1270 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1271 case 0x8:
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1272 case 0xB:
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1273 case 0xE:
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1274 //serial input port is not writeable
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1275 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1276 case 0x9:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1277 io_sctrl_write(gen->io.ports, value, context->current_cycle);
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1278 gen->io.ports[0].serial_ctrl = value;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1279 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1280 case 0xA:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1281 io_tx_write(gen->io.ports + 1, value, context->current_cycle);
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1282 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1283 case 0xC:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1284 io_sctrl_write(gen->io.ports + 1, value, context->current_cycle);
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1285 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1286 case 0xD:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1287 io_tx_write(gen->io.ports + 2, value, context->current_cycle);
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1288 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1289 case 0xF:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1290 io_sctrl_write(gen->io.ports + 2, value, context->current_cycle);
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1291 break;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1292 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1293 } else {
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1294 uint32_t masked = location & 0xFFF00;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1295 if (masked == 0x11100) {
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1296 if (value & 1) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1297 dputs("bus requesting Z80");
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1298 if (z80_enabled) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1299 z80_assert_busreq(gen->z80, context->current_cycle);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1300 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1301 gen->z80->busack = 1;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1302 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1303 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1304 if (gen->z80->busreq) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1305 dputs("releasing z80 bus");
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1306 #ifdef DO_DEBUG_PRINT
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1307 char fname[20];
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1308 sprintf(fname, "zram-%d", zram_counter++);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1309 FILE * f = fopen(fname, "wb");
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1310 fwrite(z80_ram, 1, sizeof(z80_ram), f);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1311 fclose(f);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1312 #endif
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1313 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1314 if (z80_enabled) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1315 z80_clear_busreq(gen->z80, context->current_cycle);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1316 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1317 gen->z80->busack = 0;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1318 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1319 }
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1320 } else if (masked == 0x11200) {
2184
408fb8a7e990 Implement argumentless variant of z80 debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2179
diff changeset
1321 sync_z80(gen, context->current_cycle);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1322 if (value & 1) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1323 if (z80_enabled) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1324 z80_clear_reset(gen->z80, context->current_cycle);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1325 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1326 gen->z80->reset = 0;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1327 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1328 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1329 if (z80_enabled) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1330 z80_assert_reset(gen->z80, context->current_cycle);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1331 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1332 gen->z80->reset = 1;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1333 }
1308
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon
Michael Pavone <pavone@retrodev.com>
parents: 1304
diff changeset
1334 ym_reset(gen->ym);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1335 }
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1336 } else if (masked != 0x11300 && masked != 0x11000) {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1337 fatal_error("Machine freeze due to unmapped write to address %X\n", location | 0xA00000);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1338 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1339 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1340 }
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1341
2012
b05295c2ad04 Small improvement to refresh cycle approximation
Mike Pavone <pavone@retrodev.com>
parents: 1998
diff changeset
1342 //no refresh delays during IO access
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
1343 gen_update_refresh_no_wait(context);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1344 return context;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1345 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1346
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1347 static m68k_context * io_write_w(uint32_t location, m68k_context * context, uint16_t value)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1348 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1349 if (location < 0x10000 || (location & 0x1FFF) >= 0x100) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1350 return io_write(location, context, value >> 8);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1351 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1352 return io_write(location, context, value);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1353 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1354 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1355
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1356 static void* pico_io_write(uint32_t location, void *vcontext, uint8_t value)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1357 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1358 printf("Pico IO write.b %X - %X\n", location, value);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1359 return vcontext;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1360 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1361
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1362 static void* pico_io_write_w(uint32_t location, void *vcontext, uint16_t value)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1363 {
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1364 uint32_t port = location & 0xFE;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1365 m68k_context *context = vcontext;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1366 genesis_context *gen = context->system;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1367 if (port == 0x10) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1368 sync_sound_pico(gen, context->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1369 pico_pcm_data_write(gen->adpcm, value);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1370 printf("PICO ADPCM Data: %04X\n", value);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1371 if (context->int_num == 3) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1372 adjust_int_cycle_pico(context, gen->vdp);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1373 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1374 } else if (port == 0x12) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1375 sync_sound_pico(gen, context->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1376 printf("PICO ADPCM Control: %04X\n", value);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1377 pico_pcm_ctrl_write(gen->adpcm, value);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1378 adjust_int_cycle_pico(context, gen->vdp);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1379 } else {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1380 return pico_io_write(location, vcontext, value);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1381 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1382 return vcontext;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1383 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1384
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1385 #define FOREIGN 0x80
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1386 #define HZ50 0x40
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1387 #define USA FOREIGN
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1388 #define JAP 0x00
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1389 #define EUR (HZ50|FOREIGN)
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1390 #define NO_DISK 0x20
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1391
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1392 static uint8_t io_read(uint32_t location, m68k_context * context)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1393 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1394 uint8_t value;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1395 genesis_context *gen = context->system;
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1396
2012
b05295c2ad04 Small improvement to refresh cycle approximation
Mike Pavone <pavone@retrodev.com>
parents: 1998
diff changeset
1397 //do refresh check here so we can avoid adding a penalty for a refresh that happens during an IO area access
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
1398 gen_update_refresh_free_access(context);
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1399
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1400 if (location < 0x10000) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1401 //Access to Z80 memory incurs a one 68K cycle wait state
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1402 context->current_cycle += MCLKS_PER_68K;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1403 if (!z80_enabled || z80_get_busack(gen->z80, context->current_cycle)) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1404 location &= 0x7FFF;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1405 if (location < 0x4000) {
1104
4224980a5f84 Fix the previous WIP commit. Quick tests suggests things are no more broken than before now.
Michael Pavone <pavone@retrodev.com>
parents: 1103
diff changeset
1406 value = gen->zram[location & 0x1FFF];
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1407 } else if (location < 0x6000) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1408 sync_sound(gen, context->current_cycle);
1904
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior
Michael Pavone <pavone@retrodev.com>
parents: 1902
diff changeset
1409 value = ym_read_status(gen->ym, context->current_cycle, location);
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1410 } else if (location < 0x7F00) {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1411 value = 0xFF;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1412 } else {
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1413 fatal_error("Machine freeze due to read of Z80 VDP memory window by 68K: %X\n", location | 0xA00000);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1414 value = 0xFF;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1415 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1416 } else {
1914
5b94e0e7c5a5 Reading from Z80 bus when Z80 is not bus requested should return open bus. Fixes regression in Metal Sonic Rebooted
Michael Pavone <pavone@retrodev.com>
parents: 1909
diff changeset
1417 uint16_t word = get_open_bus_value(&gen->header);
5b94e0e7c5a5 Reading from Z80 bus when Z80 is not bus requested should return open bus. Fixes regression in Metal Sonic Rebooted
Michael Pavone <pavone@retrodev.com>
parents: 1909
diff changeset
1418 value = location & 1 ? word : word >> 8;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1419 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1420 } else {
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1421 if (location < 0x10100) {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1422 switch(location >> 1 & 0xFF)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1423 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1424 case 0x0:
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1425 //version bits should be 0 for now since we're not emulating TMSS
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1426 value = gen->version_reg;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1427 break;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1428 case 0x1:
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1429 value = io_data_read(gen->io.ports, context->current_cycle);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1430 break;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1431 case 0x2:
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1432 value = io_data_read(gen->io.ports+1, context->current_cycle);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1433 break;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1434 case 0x3:
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1435 value = io_data_read(gen->io.ports+2, context->current_cycle);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1436 break;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1437 case 0x4:
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1438 value = gen->io.ports[0].control;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1439 break;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1440 case 0x5:
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1441 value = gen->io.ports[1].control;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1442 break;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1443 case 0x6:
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1444 value = gen->io.ports[2].control;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1445 break;
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1446 case 0x7:
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1447 value = gen->io.ports[0].serial_out;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1448 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1449 case 0x8:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1450 value = io_rx_read(gen->io.ports, context->current_cycle);
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1451 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1452 case 0x9:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1453 value = io_sctrl_read(gen->io.ports, context->current_cycle);
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1454 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1455 case 0xA:
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1456 value = gen->io.ports[1].serial_out;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1457 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1458 case 0xB:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1459 value = io_rx_read(gen->io.ports + 1, context->current_cycle);
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1460 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1461 case 0xC:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1462 value = io_sctrl_read(gen->io.ports, context->current_cycle);
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1463 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1464 case 0xD:
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1465 value = gen->io.ports[2].serial_out;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1466 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1467 case 0xE:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1468 value = io_rx_read(gen->io.ports + 1, context->current_cycle);
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1469 break;
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1470 case 0xF:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1471 value = io_sctrl_read(gen->io.ports, context->current_cycle);
1215
cf69a179aeaf Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents: 1208
diff changeset
1472 break;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1473 default:
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1474 value = get_open_bus_value(&gen->header) >> 8;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1475 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1476 } else {
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1477 uint32_t masked = location & 0xFFF00;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1478 if (masked == 0x11100) {
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1479 value = z80_enabled ? !z80_get_busack(gen->z80, context->current_cycle) : !gen->z80->busack;
1117
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents: 1116
diff changeset
1480 value |= (get_open_bus_value(&gen->header) >> 8) & 0xFE;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1481 dprintf("Byte read of BUSREQ returned %d @ %d (reset: %d)\n", value, context->current_cycle, gen->z80->reset);
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1482 } else if (masked == 0x11200) {
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1483 value = !gen->z80->reset;
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1484 } else if (masked == 0x11300 || masked == 0x11000) {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1485 //A11300 is apparently completely unused
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1486 //A11000 is the memory control register which I am assuming is write only
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1487 value = get_open_bus_value(&gen->header) >> 8;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1488 } else {
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1489 location |= 0xA00000;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1490 fatal_error("Machine freeze due to read of unmapped IO location %X\n", location);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1491 value = 0xFF;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1492 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1493 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1494 }
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1495
2012
b05295c2ad04 Small improvement to refresh cycle approximation
Mike Pavone <pavone@retrodev.com>
parents: 1998
diff changeset
1496 //no refresh delays during IO access
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
1497 gen_update_refresh_no_wait(context);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1498 return value;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1499 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1500
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1501 static uint16_t io_read_w(uint32_t location, m68k_context * context)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1502 {
1117
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents: 1116
diff changeset
1503 genesis_context *gen = context->system;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1504 uint16_t value = io_read(location, context);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1505 if (location < 0x10000 || (location & 0x1FFF) < 0x100) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1506 value = value | (value << 8);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1507 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1508 value <<= 8;
1117
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents: 1116
diff changeset
1509 value |= get_open_bus_value(&gen->header) & 0xFF;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1510 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1511 return value;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1512 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1513
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1514 static uint8_t pico_io_read(uint32_t location, void *vcontext)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1515 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1516 m68k_context *m68k = vcontext;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1517 genesis_context *gen = m68k->system;
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1518 uint16_t tmp;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1519 switch(location >> 1 & 0x7F)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1520 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1521 case 0:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1522 return gen->version_reg;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1523 case 1:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1524 return gen->pico_button_state;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1525 case 2:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1526 return gen->pico_pen_x >> 8;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1527 case 3:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1528 return gen->pico_pen_x;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1529 case 4:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1530 return gen->pico_pen_y >> 8;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1531 case 5:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1532 return gen->pico_pen_y;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1533 case 6:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1534 return gen->pico_page;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1535 case 7:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1536 //Copera titles seem to expect bit 0 to be 0 on a Copera and 1 on a Pico
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1537 if (gen->header.type == SYSTEM_PICO) {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1538 return 1;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1539 } else {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1540 return 0;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1541 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1542 case 8:
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
1543 //printf("uPD7759 data read @ %u\n", m68k->current_cycle);
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1544 sync_sound_pico(gen, m68k->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1545 tmp = pico_pcm_data_read(gen->adpcm);
2433
2907c3312423 Fix byte reads of ADPCM ports. Fixes hangs in Sanchoume no Tama and Sailor Moon Sailor Stars - Tokimeki Party
Michael Pavone <pavone@retrodev.com>
parents: 2431
diff changeset
1546 return (location & 1) ? tmp : tmp >> 8;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1547 case 9:
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
1548 //printf("uPD7759 contro/status read @ %u\n", m68k->current_cycle);
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1549 sync_sound_pico(gen, m68k->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1550 tmp = pico_pcm_ctrl_read(gen->adpcm);
2433
2907c3312423 Fix byte reads of ADPCM ports. Fixes hangs in Sanchoume no Tama and Sailor Moon Sailor Stars - Tokimeki Party
Michael Pavone <pavone@retrodev.com>
parents: 2431
diff changeset
1551 return (location & 1) ? tmp : tmp >> 8;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1552 return 0;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1553 default:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1554 printf("Unknown Pico IO read %X @ %u\n", location, m68k->current_cycle);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1555 return 0xFF;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1556 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1557 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1558
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1559 static uint16_t pico_io_read_w(uint32_t location, void *vcontext)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1560 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1561 m68k_context *m68k = vcontext;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1562 genesis_context *gen = m68k->system;
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1563 uint32_t port = location & 0xFE;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1564 if (port == 0x10) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1565 sync_sound_pico(gen, m68k->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1566 return pico_pcm_data_read(gen->adpcm);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1567 } else if (port == 0x12) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1568 sync_sound_pico(gen, m68k->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1569 return pico_pcm_ctrl_read(gen->adpcm);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1570 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1571 uint16_t value = pico_io_read(location, vcontext);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1572 return value | (value << 8);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1573 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1574
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1575 static uint16_t copera_io_read_w(uint32_t location, void *vcontext)
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1576 {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1577 printf("Unhandled Copera 16-bit read %X\n", location);
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1578 return 0xFFFF;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1579 }
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1580
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1581 static uint8_t copera_io_read(uint32_t location, void *vcontext)
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1582 {
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1583 uint8_t ret;
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1584 m68k_context *m68k = vcontext;
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1585 genesis_context *gen = m68k->system;
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1586 switch (location & 0xFF)
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1587 {
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1588 case 1:
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1589 case 5:
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1590 ymz263b_run(gen->ymz, m68k->current_cycle);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1591 ret = ymz263b_status_read(gen->ymz);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1592 printf("Copera YMZ263 Status read - %X: %X\n", location, ret);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1593 adjust_int_cycle_pico(gen->m68k, gen->vdp);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1594 return ret;
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1595 case 3:
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1596 case 7:
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1597 ymz263b_run(gen->ymz, m68k->current_cycle);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1598 ret = ymz263b_data_read(gen->ymz, location & 4);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1599 printf("Copera YMZ263 Data read - %X: %X\n", location, ret);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1600 return ret;
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1601 default:
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1602 printf("Unhandled Copera 8-bit read %X\n", location);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1603 return 0xFF;
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1604 }
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1605 }
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1606
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1607 static void* copera_io_write_w(uint32_t location, void *vcontext, uint16_t value)
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1608 {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1609 printf("Unhandled Copera 16-bit write %X: %X\n", location, value);
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1610 return vcontext;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1611 }
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1612
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1613 static void* copera_io_write(uint32_t location, void *vcontext, uint8_t value)
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1614 {
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1615 m68k_context *m68k = vcontext;
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1616 genesis_context *gen = m68k->system;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1617 switch (location & 0xFF)
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1618 {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1619 case 1:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1620 case 5:
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1621 ymz263b_run(gen->ymz, m68k->current_cycle);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1622 printf("Copera YMZ263 Address write - %X: %X\n", location, value);
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1623 ymz263b_address_write(gen->ymz, value);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1624 break;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1625 case 3:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1626 case 7:
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1627 ymz263b_run(gen->ymz, m68k->current_cycle);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1628 printf("Copera YMZ263 Channel #%d Data write - %X: %X\n", ((location & 4) >> 2) + 1, location, value);
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1629 ymz263b_data_write(gen->ymz, location & 4, value);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1630 adjust_int_cycle_pico(gen->m68k, gen->vdp);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1631 break;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1632 case 0x24:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1633 case 0x34:
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1634 printf("Copera YMF262 Address Part #%d write - %X: %X\n", ((location >> 4) & 1) + 1, location, value);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1635 break;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1636 case 0x28:
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
1637 printf("Copera YMF262 Data write - %X: %X\n", location, value);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1638 break;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1639 case 0x40:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1640 //Bit 4 = SCI
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1641 //Bit 5 = DIN
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1642 //Bit 6 = A0
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1643 //Possible Bit 0-3 are the same but for the other YM7128B
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1644 printf("Copera YM7128B Write - %X: %X\n", location, value);
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1645 break;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1646 default:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1647 printf("Unhandled Copera 8-bit write %X: %X\n", location, value);
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1648 }
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1649 return vcontext;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1650 }
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1651
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1652 static void * z80_write_ym(uint32_t location, void * vcontext, uint8_t value)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1653 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1654 z80_context * context = vcontext;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1655 genesis_context * gen = context->system;
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1656 sync_sound(gen, context->Z80_CYCLE);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1657 if (location & 1) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1658 ym_data_write(gen->ym, value);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1659 } else if (location & 2) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1660 ym_address_write_part2(gen->ym, value);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1661 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1662 ym_address_write_part1(gen->ym, value);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1663 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1664 return context;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1665 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1666
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1667 static uint8_t z80_read_ym(uint32_t location, void * vcontext)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1668 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1669 z80_context * context = vcontext;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1670 genesis_context * gen = context->system;
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1671 sync_sound(gen, context->Z80_CYCLE);
1904
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior
Michael Pavone <pavone@retrodev.com>
parents: 1902
diff changeset
1672 return ym_read_status(gen->ym, context->Z80_CYCLE, location);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1673 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1674
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1675 static uint8_t z80_read_bank(uint32_t location, void * vcontext)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1676 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1677 z80_context * context = vcontext;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1678 genesis_context *gen = context->system;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1679 if (gen->bus_busy) {
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1680 context->Z80_CYCLE = gen->m68k->current_cycle;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1681 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1682 //typical delay from bus arbitration
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1683 context->Z80_CYCLE += 3 * MCLKS_PER_Z80;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1684 //TODO: add cycle for an access right after a previous one
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1685 //TODO: Below cycle time is an estimate based on the time between 68K !BG goes low and Z80 !MREQ goes high
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1686 // Needs a new logic analyzer capture to get the actual delay on the 68K side
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1687 gen->m68k->current_cycle += 8 * MCLKS_PER_68K;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1688
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1689 location &= 0x7FFF;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1690 if (context->mem_pointers[1]) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1691 return context->mem_pointers[1][location ^ 1];
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1692 }
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1693 uint32_t address = gen->z80_bank_reg << 15 | location;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1694 if (address >= 0xC00000 && address < 0xE00000) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1695 return z80_vdp_port_read(location & 0xFF, context);
1869
dc94354eab66 Fix accuracy bugs used by Novedicus to detect BlastEm/Exodus
Michael Pavone <pavone@retrodev.com>
parents: 1849
diff changeset
1696 } else if (address >= 0xA10000 && address <= 0xA10001) {
dc94354eab66 Fix accuracy bugs used by Novedicus to detect BlastEm/Exodus
Michael Pavone <pavone@retrodev.com>
parents: 1849
diff changeset
1697 //Apparently version reg can be read through Z80 banked area
dc94354eab66 Fix accuracy bugs used by Novedicus to detect BlastEm/Exodus
Michael Pavone <pavone@retrodev.com>
parents: 1849
diff changeset
1698 //TODO: Check rest of IO region addresses
dc94354eab66 Fix accuracy bugs used by Novedicus to detect BlastEm/Exodus
Michael Pavone <pavone@retrodev.com>
parents: 1849
diff changeset
1699 return gen->version_reg;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1700 } else {
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1701 fprintf(stderr, "Unhandled read by Z80 from address %X through banked memory area (%X)\n", address, gen->z80_bank_reg << 15);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1702 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1703 return 0;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1704 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1705
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1706 static void *z80_write_bank(uint32_t location, void * vcontext, uint8_t value)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1707 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1708 z80_context * context = vcontext;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1709 genesis_context *gen = context->system;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1710 if (gen->bus_busy) {
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1711 context->Z80_CYCLE = gen->m68k->current_cycle;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1712 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1713 //typical delay from bus arbitration
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1714 context->Z80_CYCLE += 3 * MCLKS_PER_Z80;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1715 //TODO: add cycle for an access right after a previous one
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1716 //TODO: Below cycle time is an estimate based on the time between 68K !BG goes low and Z80 !MREQ goes high
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1717 // Needs a new logic analyzer capture to get the actual delay on the 68K side
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1718 gen->m68k->current_cycle += 8 * MCLKS_PER_68K;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1719
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1720 location &= 0x7FFF;
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1721 uint32_t address = gen->z80_bank_reg << 15 | location;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1722 if (address >= 0xE00000) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1723 address &= 0xFFFF;
1104
4224980a5f84 Fix the previous WIP commit. Quick tests suggests things are no more broken than before now.
Michael Pavone <pavone@retrodev.com>
parents: 1103
diff changeset
1724 ((uint8_t *)gen->work_ram)[address ^ 1] = value;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1725 } else if (address >= 0xC00000) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1726 z80_vdp_port_write(location & 0xFF, context, value);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1727 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1728 fprintf(stderr, "Unhandled write by Z80 to address %X through banked memory area\n", address);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1729 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1730 return context;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1731 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1732
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1733 static void *z80_write_bank_reg(uint32_t location, void * vcontext, uint8_t value)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1734 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1735 z80_context * context = vcontext;
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1736 genesis_context *gen = context->system;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1737
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
1738 gen->z80_bank_reg = (gen->z80_bank_reg >> 1 | value << 8) & 0x1FF;
1445
349d50930c03 Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1444
diff changeset
1739 update_z80_bank_pointer(context->system);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1740
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1741 return context;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1742 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1743
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1744 static uint16_t unused_read(uint32_t location, void *vcontext)
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1745 {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1746 m68k_context *context = vcontext;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1747 genesis_context *gen = context->system;
2228
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1748 if (location >= 0x800000) {
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1749 //do refresh check here so we can avoid adding a penalty for a refresh that happens during an IO area access
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1750 gen->refresh_counter += context->current_cycle - 4*MCLKS_PER_68K - gen->last_sync_cycle;
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1751 context->current_cycle += REFRESH_DELAY * MCLKS_PER_68K * (gen->refresh_counter / (MCLKS_PER_68K * REFRESH_INTERVAL));
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1752 gen->refresh_counter += 4*MCLKS_PER_68K;
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1753 gen->refresh_counter = gen->refresh_counter % (MCLKS_PER_68K * REFRESH_INTERVAL);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1754 gen->last_sync_cycle = context->current_cycle;
2228
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1755 }
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1756
1987
71732f2f6f42 Fix handling of unmapped reads/writes to the cart/expansion port region
Mike Pavone <pavone@retrodev.com>
parents: 1980
diff changeset
1757 if (location < 0x800000 || (location >= 0xA13000 && location < 0xA13100) || (location >= 0xA12000 && location < 0xA12100)) {
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1758 //Only called if the cart/exp doesn't have a more specific handler for this region
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1759 return get_open_bus_value(&gen->header);
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1760 } else if (location == 0xA14000 || location == 0xA14002) {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1761 if (gen->version_reg & 0xF) {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1762 return gen->tmss_lock[location >> 1 & 1];
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1763 } else {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1764 fatal_error("Machine freeze due to read from TMSS lock when TMSS is not present %X\n", location);
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1765 return 0xFFFF;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1766 }
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1767 } else if (location == 0xA14100) {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1768 if (gen->version_reg & 0xF) {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1769 return get_open_bus_value(&gen->header);
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1770 } else {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1771 fatal_error("Machine freeze due to read from TMSS control when TMSS is not present %X\n", location);
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1772 return 0xFFFF;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1773 }
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1774 } else {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1775 fatal_error("Machine freeze due to unmapped read from %X\n", location);
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1776 return 0xFFFF;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1777 }
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1778 }
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1779
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1780 static uint8_t unused_read_b(uint32_t location, void *vcontext)
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1781 {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1782 uint16_t v = unused_read(location & 0xFFFFFE, vcontext);
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1783 if (location & 1) {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1784 return v;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1785 } else {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1786 return v >> 8;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1787 }
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1788 }
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1789
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1790 static void check_tmss_lock(genesis_context *gen)
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1791 {
2039
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1792 gen->vdp_unlocked = gen->tmss_lock[0] == 0x5345 && gen->tmss_lock[1] == 0x4741;
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1793 }
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1794
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1795 static void toggle_tmss_rom(genesis_context *gen)
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1796 {
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1797 m68k_context *context = gen->m68k;
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1798 for (int i = 0; i < NUM_MEM_AREAS; i++)
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1799 {
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1800 uint16_t *tmp = context->mem_pointers[i];
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1801 context->mem_pointers[i] = gen->tmss_pointers[i];
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1802 gen->tmss_pointers[i] = tmp;
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1803 }
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1804 m68k_invalidate_code_range(context, 0, 0x400000);
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1805 }
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1806
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1807 static void *unused_write(uint32_t location, void *vcontext, uint16_t value)
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1808 {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1809 m68k_context *context = vcontext;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1810 genesis_context *gen = context->system;
2228
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1811 if (location >= 0x800000) {
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1812 //do refresh check here so we can avoid adding a penalty for a refresh that happens during an IO area access
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1813 gen->refresh_counter += context->current_cycle - 4*MCLKS_PER_68K - gen->last_sync_cycle;
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1814 context->current_cycle += REFRESH_DELAY * MCLKS_PER_68K * (gen->refresh_counter / (MCLKS_PER_68K * REFRESH_INTERVAL));
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1815 gen->refresh_counter += 4*MCLKS_PER_68K;
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1816 gen->refresh_counter = gen->refresh_counter % (MCLKS_PER_68K * REFRESH_INTERVAL);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1817 gen->last_sync_cycle = context->current_cycle;
2228
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1818 }
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1819
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1820 uint8_t has_tmss = gen->version_reg & 0xF;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1821 if (has_tmss && (location == 0xA14000 || location == 0xA14002)) {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1822 gen->tmss_lock[location >> 1 & 1] = value;
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1823 check_tmss_lock(gen);
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1824 } else if (has_tmss && location == 0xA14100) {
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1825 value &= 1;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1826 if (gen->tmss != value) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1827 gen->tmss = value;
2039
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1828 toggle_tmss_rom(gen);
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1829 }
1987
71732f2f6f42 Fix handling of unmapped reads/writes to the cart/expansion port region
Mike Pavone <pavone@retrodev.com>
parents: 1980
diff changeset
1830 } else if (location < 0x800000 || (location >= 0xA13000 && location < 0xA13100) || (location >= 0xA12000 && location < 0xA12100)) {
71732f2f6f42 Fix handling of unmapped reads/writes to the cart/expansion port region
Mike Pavone <pavone@retrodev.com>
parents: 1980
diff changeset
1831 //these writes are ignored when no relevant hardware is present
71732f2f6f42 Fix handling of unmapped reads/writes to the cart/expansion port region
Mike Pavone <pavone@retrodev.com>
parents: 1980
diff changeset
1832 } else {
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1833 fatal_error("Machine freeze due to unmapped write to %X\n", location);
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1834 }
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1835 return vcontext;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1836 }
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1837
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1838 static void *unused_write_b(uint32_t location, void *vcontext, uint8_t value)
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1839 {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1840 m68k_context *context = vcontext;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1841 genesis_context *gen = context->system;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1842 uint8_t has_tmss = gen->version_reg & 0xF;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1843 if (has_tmss && location >= 0xA14000 && location <= 0xA14003) {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1844 uint32_t offset = location >> 1 & 1;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1845 if (location & 1) {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1846 gen->tmss_lock[offset] &= 0xFF00;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1847 gen->tmss_lock[offset] |= value;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1848 } else {
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1849 gen->tmss_lock[offset] &= 0xFF;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1850 gen->tmss_lock[offset] |= value << 8;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1851 }
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1852 check_tmss_lock(gen);
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1853 } else if (has_tmss && (location == 0xA14100 || location == 0xA14101)) {
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1854 if (location & 1) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1855 value &= 1;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1856 if (gen->tmss != value) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1857 gen->tmss = value;
2039
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1858 toggle_tmss_rom(gen);
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1859 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1860 }
1987
71732f2f6f42 Fix handling of unmapped reads/writes to the cart/expansion port region
Mike Pavone <pavone@retrodev.com>
parents: 1980
diff changeset
1861 } else if (location < 0x800000 || (location >= 0xA13000 && location < 0xA13100) || (location >= 0xA12000 && location < 0xA12100)) {
71732f2f6f42 Fix handling of unmapped reads/writes to the cart/expansion port region
Mike Pavone <pavone@retrodev.com>
parents: 1980
diff changeset
1862 //these writes are ignored when no relevant hardware is present
71732f2f6f42 Fix handling of unmapped reads/writes to the cart/expansion port region
Mike Pavone <pavone@retrodev.com>
parents: 1980
diff changeset
1863 } else {
1907
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1864 fatal_error("Machine freeze due to unmapped byte write to %X\n", location);
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1865 }
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1866 return vcontext;
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1867 }
b021ca0bc375 Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents: 1906
diff changeset
1868
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1869 static void set_speed_percent(system_header * system, uint32_t percent)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1870 {
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1871 genesis_context *context = (genesis_context *)system;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1872 uint32_t old_clock = context->master_clock;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1873 context->master_clock = ((uint64_t)context->normal_clock * (uint64_t)percent) / 100;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1874 while (context->ym->current_cycle != context->psg->cycles) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1875 sync_sound(context, context->psg->cycles + MCLKS_PER_PSG);
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1876 }
2278
5a21bc0ec583 Implement turbo/slo mo for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2277
diff changeset
1877 if (context->expansion) {
5a21bc0ec583 Implement turbo/slo mo for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2277
diff changeset
1878 segacd_context *cd = context->expansion;
5a21bc0ec583 Implement turbo/slo mo for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2277
diff changeset
1879 segacd_set_speed_percent(cd, percent);
5a21bc0ec583 Implement turbo/slo mo for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2277
diff changeset
1880 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1881 ym_adjust_master_clock(context->ym, context->master_clock);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1882 psg_adjust_master_clock(context->psg, context->master_clock);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1883 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1884
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1885 void set_region(genesis_context *gen, rom_info *info, uint8_t region)
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1886 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1887 if (!region) {
1326
071e761bcdcf Fix a deficiency in the way types were handled in my ternary tree. Fixes in which some paths that were constructed from a template with variables would sometimes get an extra garbage character thrown in
Michael Pavone <pavone@retrodev.com>
parents: 1318
diff changeset
1888 char * def_region = tern_find_path_default(config, "system\0default_region\0", (tern_val){.ptrval = "U"}, TVAL_PTR).ptrval;
1204
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
1889 if (!info->regions || (info->regions & translate_region_char(toupper(*def_region)))) {
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1890 region = translate_region_char(toupper(*def_region));
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1891 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1892 region = info->regions;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1893 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1894 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1895 uint8_t is_50hz = 0;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1896 if (gen->header.type == SYSTEM_PICO || gen->header.type == SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1897 if (region & REGION_E) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1898 is_50hz = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1899 gen->version_reg = 0x20;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1900 } else if (region & REGION_J) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1901 gen->version_reg = 0;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1902 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1903 gen->version_reg = 0x40;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1904 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1905 } else {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1906 if (region & REGION_E) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1907 gen->version_reg = NO_DISK | EUR;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1908 is_50hz = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1909 } else if (region & REGION_J) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1910 gen->version_reg = NO_DISK | JAP;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1911 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1912 gen->version_reg = NO_DISK | USA;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1913 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1914 }
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
1915
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1916 if (is_50hz) {
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1917 gen->normal_clock = MCLKS_PAL;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1918 gen->soft_flush_cycles = MCLKS_LINE * 313 / 3 + 2;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1919 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1920 gen->normal_clock = MCLKS_NTSC;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1921 gen->soft_flush_cycles = MCLKS_LINE * 262 / 3 + 2;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1922 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1923 gen->master_clock = gen->normal_clock;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1924 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1925
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1926 static uint8_t load_state(system_header *system, uint8_t slot)
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1927 {
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1928 genesis_context *gen = (genesis_context *)system;
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1929 char *statepath = get_slot_name(system, slot, "state");
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1930 deserialize_buffer state;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1931 uint32_t pc = 0;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1932 uint8_t ret;
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1933 if (!gen->m68k->resume_pc) {
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1934 system->delayed_load_slot = slot + 1;
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1935 gen->m68k->should_return = 1;
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1936 ret = get_modification_time(statepath) != 0;
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1937 if (!ret) {
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1938 strcpy(statepath + strlen(statepath)-strlen("state"), "gst");
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1939 ret = get_modification_time(statepath) != 0;
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1940 }
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1941 goto done;
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1942 }
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1943 if (load_from_file(&state, statepath)) {
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1944 genesis_deserialize(&state, gen);
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1945 free(state.data);
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1946 ret = 1;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1947 } else {
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1948 strcpy(statepath + strlen(statepath)-strlen("state"), "gst");
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1949 pc = load_gst(gen, statepath);
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1950 ret = pc != 0;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1951 }
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1952 if (ret) {
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1953 debug_message("Loaded state from %s\n", statepath);
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1954 }
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1955 done:
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1956 free(statepath);
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1957 return ret;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1958 }
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1959
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1960 static void handle_reset_requests(genesis_context *gen)
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1961 {
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1962 while (gen->reset_requested || gen->header.delayed_load_slot)
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1963 {
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1964 if (gen->reset_requested) {
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1965 gen->reset_requested = 0;
1556
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
1966 gen->m68k->should_return = 0;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1967 if (gen->header.type == SYSTEM_GENESIS) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1968 z80_assert_reset(gen->z80, gen->m68k->current_cycle);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1969 z80_clear_busreq(gen->z80, gen->m68k->current_cycle);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1970 }
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1971 if (gen->header.type != SYSTEM_PICO && gen->header.type != SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1972 ym_reset(gen->ym);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1973 }
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1974 //Is there any sort of VDP reset?
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1975 m68k_reset(gen->m68k);
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1976 }
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1977 if (gen->header.delayed_load_slot) {
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1978 load_state(&gen->header, gen->header.delayed_load_slot - 1);
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1979 gen->header.delayed_load_slot = 0;
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1980 resume_68k(gen->m68k);
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1981 }
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1982 }
1980
81df9aa2de9b Less hacky run on audio thread mode
Michael Pavone <pavone@retrodev.com>
parents: 1971
diff changeset
1983 if (gen->header.force_release || render_should_release_on_exit()) {
1932
b387f1c5a1d0 WIP new sync mode that runs emulation on audio thread
Michael Pavone <pavone@retrodev.com>
parents: 1927
diff changeset
1984 bindings_release_capture();
b387f1c5a1d0 WIP new sync mode that runs emulation on audio thread
Michael Pavone <pavone@retrodev.com>
parents: 1927
diff changeset
1985 vdp_release_framebuffer(gen->vdp);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1986 if (gen->header.type != SYSTEM_PICO && gen->header.type != SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1987 render_pause_source(gen->ym->audio);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1988 }
1932
b387f1c5a1d0 WIP new sync mode that runs emulation on audio thread
Michael Pavone <pavone@retrodev.com>
parents: 1927
diff changeset
1989 render_pause_source(gen->psg->audio);
b387f1c5a1d0 WIP new sync mode that runs emulation on audio thread
Michael Pavone <pavone@retrodev.com>
parents: 1927
diff changeset
1990 }
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1991 }
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1992
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1993 static void start_genesis(system_header *system, char *statefile)
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1994 {
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1995 genesis_context *gen = (genesis_context *)system;
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1996 if (statefile) {
1428
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
1997 //first try loading as a native format savestate
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
1998 deserialize_buffer state;
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
1999 uint32_t pc;
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
2000 if (load_from_file(&state, statefile)) {
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
2001 genesis_deserialize(&state, gen);
1428
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
2002 free(state.data);
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
2003 //HACK
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
2004 pc = gen->m68k->last_prefetch_address;
1428
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
2005 } else {
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
2006 pc = load_gst(gen, statefile);
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
2007 if (!pc) {
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
2008 fatal_error("Failed to load save state %s\n", statefile);
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
2009 }
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2010 }
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2011 printf("Loaded %s\n", statefile);
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2012 if (gen->header.enter_debugger) {
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2013 gen->header.enter_debugger = 0;
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
2014 #ifndef IS_LIB
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2015 insert_breakpoint(gen->m68k, pc, gen->header.debugger_type == DEBUGGER_NATIVE ? debugger : gdb_debug_enter);
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
2016 #endif
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2017 }
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2018 if (gen->header.type == SYSTEM_PICO || gen->header.type == SYSTEM_COPERA) {
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2019 adjust_int_cycle_pico(gen->m68k, gen->vdp);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2020 } else {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2021 adjust_int_cycle(gen->m68k, gen->vdp);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2022 }
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2023 start_68k_context(gen->m68k, pc);
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2024 } else {
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2025 if (gen->header.enter_debugger) {
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2026 gen->header.enter_debugger = 0;
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
2027 #ifndef IS_LIB
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2028 uint32_t address = read_word(4, (void **)gen->m68k->mem_pointers, &gen->m68k->options->gen, gen->m68k) << 16
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2029 | read_word(6, (void **)gen->m68k->mem_pointers, &gen->m68k->options->gen, gen->m68k);
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2030 insert_breakpoint(gen->m68k, address, gen->header.debugger_type == DEBUGGER_NATIVE ? debugger : gdb_debug_enter);
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
2031 #endif
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2032 }
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2033 m68k_reset(gen->m68k);
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2034 }
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2035 handle_reset_requests(gen);
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
2036 return;
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2037 }
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2038
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2039 static void resume_genesis(system_header *system)
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2040 {
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2041 genesis_context *gen = (genesis_context *)system;
1980
81df9aa2de9b Less hacky run on audio thread mode
Michael Pavone <pavone@retrodev.com>
parents: 1971
diff changeset
2042 if (gen->header.force_release || render_should_release_on_exit()) {
81df9aa2de9b Less hacky run on audio thread mode
Michael Pavone <pavone@retrodev.com>
parents: 1971
diff changeset
2043 gen->header.force_release = 0;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2044 if (gen->header.type == SYSTEM_PICO || gen->header.type == SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2045 render_set_video_standard((gen->version_reg & 0x60) == 0x20 ? VID_PAL : VID_NTSC);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2046 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2047 render_set_video_standard((gen->version_reg & HZ50) ? VID_PAL : VID_NTSC);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2048 }
1932
b387f1c5a1d0 WIP new sync mode that runs emulation on audio thread
Michael Pavone <pavone@retrodev.com>
parents: 1927
diff changeset
2049 bindings_reacquire_capture();
b387f1c5a1d0 WIP new sync mode that runs emulation on audio thread
Michael Pavone <pavone@retrodev.com>
parents: 1927
diff changeset
2050 vdp_reacquire_framebuffer(gen->vdp);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2051 if (gen->header.type != SYSTEM_PICO && gen->header.type != SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2052 render_resume_source(gen->ym->audio);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2053 }
1932
b387f1c5a1d0 WIP new sync mode that runs emulation on audio thread
Michael Pavone <pavone@retrodev.com>
parents: 1927
diff changeset
2054 render_resume_source(gen->psg->audio);
b387f1c5a1d0 WIP new sync mode that runs emulation on audio thread
Michael Pavone <pavone@retrodev.com>
parents: 1927
diff changeset
2055 }
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2056 resume_68k(gen->m68k);
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2057 handle_reset_requests(gen);
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2058 }
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2059
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2060 static void inc_debug_mode(system_header *system)
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2061 {
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2062 genesis_context *gen = (genesis_context *)system;
1631
c4ba3177b72d WIP new VDP plane debug view and support for detached VDP debug views generally
Michael Pavone <pavone@retrodev.com>
parents: 1610
diff changeset
2063 vdp_inc_debug_mode(gen->vdp);
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2064 }
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2065
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2066 static void request_exit(system_header *system)
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2067 {
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2068 genesis_context *gen = (genesis_context *)system;
1688
395f684c5379 Fixed the most glaring issues in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1643
diff changeset
2069 gen->m68k->target_cycle = gen->m68k->current_cycle;
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2070 gen->m68k->should_return = 1;
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2071 }
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2072
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2073 static void persist_save(system_header *system)
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2074 {
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2075 genesis_context *gen = (genesis_context *)system;
2083
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2076 FILE *f;
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2077 if (gen->expansion) {
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2078 segacd_context *cd = gen->expansion;
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2079 char *bram_name = path_append(system->save_dir, "internal.bram");
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2080 f = fopen(bram_name, "wb");
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2081 if (f) {
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2082 fwrite(cd->bram, 1, 8 * 1024, f);
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2083 fclose(f);
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2084 printf("Saved internal BRAM to %s\n", bram_name);
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2085 }
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2086 free(bram_name);
2281
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2087 if (cd->bram_cart_id < 8) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2088 bram_name = path_append(system->save_dir, "cart.bram");
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2089 f = fopen(bram_name, "wb");
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2090 if (f) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2091 long configured_size = 0x2000 << cd->bram_cart_id;
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2092 fwrite(cd->bram_cart, 1, configured_size, f);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2093 fclose(f);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2094 printf("Saved BRAM cart to %s\n", bram_name);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2095 }
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2096 free(bram_name);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2097 }
2083
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2098 }
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2099 if (gen->save_type == SAVE_NONE) {
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2100 return;
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2101 }
2083
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2102 f = fopen(save_filename, "wb");
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2103 if (!f) {
1395
efa7225e0f07 Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents: 1377
diff changeset
2104 fprintf(stderr, "Failed to open %s file %s for writing\n", save_type_name(gen->save_type), save_filename);
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2105 return;
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2106 }
1848
ef3d368d59b0 16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents: 1798
diff changeset
2107 if (gen->save_type == RAM_FLAG_BOTH) {
ef3d368d59b0 16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents: 1798
diff changeset
2108 byteswap_rom(gen->save_size, (uint16_t *)gen->save_storage);
ef3d368d59b0 16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents: 1798
diff changeset
2109 }
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2110 fwrite(gen->save_storage, 1, gen->save_size, f);
1848
ef3d368d59b0 16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents: 1798
diff changeset
2111 if (gen->save_type == RAM_FLAG_BOTH) {
ef3d368d59b0 16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents: 1798
diff changeset
2112 byteswap_rom(gen->save_size, (uint16_t *)gen->save_storage);
ef3d368d59b0 16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents: 1798
diff changeset
2113 }
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2114 fclose(f);
1395
efa7225e0f07 Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents: 1377
diff changeset
2115 printf("Saved %s to %s\n", save_type_name(gen->save_type), save_filename);
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2116 }
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2117
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2118 static void load_save(system_header *system)
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2119 {
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2120 genesis_context *gen = (genesis_context *)system;
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2121 FILE * f = fopen(save_filename, "rb");
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2122 if (f) {
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2123 uint32_t read = fread(gen->save_storage, 1, gen->save_size, f);
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2124 fclose(f);
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2125 if (read > 0) {
1848
ef3d368d59b0 16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents: 1798
diff changeset
2126 if (gen->save_type == RAM_FLAG_BOTH) {
ef3d368d59b0 16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents: 1798
diff changeset
2127 byteswap_rom(gen->save_size, (uint16_t *)gen->save_storage);
ef3d368d59b0 16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents: 1798
diff changeset
2128 }
1395
efa7225e0f07 Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents: 1377
diff changeset
2129 printf("Loaded %s from %s\n", save_type_name(gen->save_type), save_filename);
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2130 }
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2131 }
2083
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2132 if (gen->expansion) {
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2133 segacd_context *cd = gen->expansion;
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2134 char *bram_name = path_append(system->save_dir, "internal.bram");
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2135 f = fopen(bram_name, "rb");
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2136 if (f) {
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2137 uint32_t read = fread(cd->bram, 1, 8 * 1024, f);
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2138 fclose(f);
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2139 if (read > 0) {
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2140 printf("Loaded internal BRAM from %s\n", bram_name);
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2141 }
2335
c05b7c5e6f11 Automatically format Sega CD backup RAM
Michael Pavone <pavone@retrodev.com>
parents: 2327
diff changeset
2142 } else {
c05b7c5e6f11 Automatically format Sega CD backup RAM
Michael Pavone <pavone@retrodev.com>
parents: 2327
diff changeset
2143 segacd_format_bram(cd->bram, 8 * 1024);
2083
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2144 }
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2145 free(bram_name);
2281
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2146 bram_name = path_append(system->save_dir, "cart.bram");
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2147 f = fopen(bram_name, "rb");
2335
c05b7c5e6f11 Automatically format Sega CD backup RAM
Michael Pavone <pavone@retrodev.com>
parents: 2327
diff changeset
2148 long configured_size = 0x2000 << cd->bram_cart_id;
2281
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2149 if (f) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2150 long existing_size = nearest_pow2(file_size(f));
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2151 if (existing_size > 1 * 1024 * 1024) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2152 existing_size = 1 * 1024 * 1024;
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2153 }
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2154 if (existing_size != configured_size) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2155 if (existing_size > configured_size) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2156 free(cd->bram_cart);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2157 cd->bram_cart = calloc(existing_size, 1);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2158 }
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2159 cd->bram_cart_id = 0;
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2160 while (existing_size > (0x2000 <<cd->bram_cart_id)) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2161 cd->bram_cart_id++;
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2162 }
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2163 }
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2164 uint32_t read = fread(cd->bram_cart, 1, existing_size, f);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2165 fclose(f);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2166 if (read > 0) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2167 printf("Loaded BRAM cart from %s\n", bram_name);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2168 }
2335
c05b7c5e6f11 Automatically format Sega CD backup RAM
Michael Pavone <pavone@retrodev.com>
parents: 2327
diff changeset
2169 } else {
c05b7c5e6f11 Automatically format Sega CD backup RAM
Michael Pavone <pavone@retrodev.com>
parents: 2327
diff changeset
2170 segacd_format_bram(cd->bram_cart, configured_size);
2281
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2171 }
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2172 free(bram_name);
2083
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2173 }
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2174 }
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2175
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2176 static void soft_reset(system_header *system)
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2177 {
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2178 genesis_context *gen = (genesis_context *)system;
1556
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
2179 if (gen->reset_cycle == CYCLE_NEVER) {
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
2180 double random = (double)rand()/(double)RAND_MAX;
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
2181 gen->reset_cycle = gen->m68k->current_cycle + random * MCLKS_LINE * (gen->version_reg & HZ50 ? LINES_PAL : LINES_NTSC);
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
2182 if (gen->reset_cycle < gen->m68k->target_cycle) {
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
2183 gen->m68k->target_cycle = gen->reset_cycle;
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
2184 }
075df0844baa Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents: 1555
diff changeset
2185 }
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2186 }
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2187
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2188 static void free_genesis(system_header *system)
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2189 {
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2190 genesis_context *gen = (genesis_context *)system;
2164
4fbe1e7c4a73 Don't leak all Sega CD resources when freeing a Genesis instance
Michael Pavone <pavone@retrodev.com>
parents: 2150
diff changeset
2191 if (gen->expansion) {
4fbe1e7c4a73 Don't leak all Sega CD resources when freeing a Genesis instance
Michael Pavone <pavone@retrodev.com>
parents: 2150
diff changeset
2192 free_segacd(gen->expansion);
4fbe1e7c4a73 Don't leak all Sega CD resources when freeing a Genesis instance
Michael Pavone <pavone@retrodev.com>
parents: 2150
diff changeset
2193 }
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2194 vdp_free(gen->vdp);
1593
24508cb54f87 Fix a number of other memory errors (mostly leaks again) identified by valgrind
Michael Pavone <pavone@retrodev.com>
parents: 1592
diff changeset
2195 memmap_chunk *map = (memmap_chunk *)gen->m68k->options->gen.memmap;
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2196 m68k_options_free(gen->m68k->options);
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
2197 free(gen->cart);
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2198 free(gen->m68k);
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2199 free(gen->work_ram);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2200 if (gen->header.type == SYSTEM_GENESIS) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2201 z80_options_free(gen->z80->Z80_OPTS);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2202 free(gen->z80);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2203 free(gen->zram);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2204 }
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2205 if (gen->header.type == SYSTEM_PICO || gen->header.type == SYSTEM_COPERA) {
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2206 pico_pcm_free(gen->adpcm);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2207 free(gen->adpcm);
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
2208 if (gen->ymz) {
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
2209 //TODO: call cleanup function once it exists
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
2210 free(gen->ymz);
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
2211 }
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2212 } else {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2213 ym_free(gen->ym);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2214 }
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2215 psg_free(gen->psg);
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2216 free(gen->header.save_dir);
1595
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
2217 free_rom_info(&gen->header.info);
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2218 free(gen->lock_on);
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
2219 if (gen->save_type != SAVE_NONE && gen->mapper_type != MAPPER_SEGA_MED_V2) {
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
2220 free(gen->save_storage);
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
2221 }
2248
f7e2e11f1214 Fix improper free of memory map array from rom_info
Michael Pavone <pavone@retrodev.com>
parents: 2243
diff changeset
2222 free(map);
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
2223 free(gen);
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2224 }
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2225
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2226 static void gamepad_down(system_header *system, uint8_t gamepad_num, uint8_t button)
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2227 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2228 genesis_context *gen = (genesis_context *)system;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2229 io_gamepad_down(&gen->io, gamepad_num, button);
1610
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
2230 if (gen->mapper_type == MAPPER_JCART) {
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
2231 jcart_gamepad_down(gen, gamepad_num, button);
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
2232 }
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2233 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2234
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2235 static void gamepad_up(system_header *system, uint8_t gamepad_num, uint8_t button)
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2236 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2237 genesis_context *gen = (genesis_context *)system;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2238 io_gamepad_up(&gen->io, gamepad_num, button);
1610
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
2239 if (gen->mapper_type == MAPPER_JCART) {
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
2240 jcart_gamepad_up(gen, gamepad_num, button);
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
2241 }
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2242 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2243
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2244 static void pico_update_page(genesis_context *gen)
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2245 {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2246 #ifndef IS_LIB
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2247 uint8_t page_num = 0;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2248 uint8_t page = gen->pico_page;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2249 while (page)
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2250 {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2251 page_num++;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2252 page >>= 1;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2253 }
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2254 render_clear_window(gen->pico_story_window, 236, 205, 27);
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2255 int x, width;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2256 if (page_num) {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2257 x = 0;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2258 width = 640;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2259 } else {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2260 render_fill_rect(gen->pico_story_window, 50, 29, 96, 0, 0, 320, 320);
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2261 x = 320;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2262 width = 320;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2263 }
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2264 if (gen->pico_story_pages[page_num] == 0xFF && page_num == 6 && gen->pico_story_pages[page_num - 1]) {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2265 //repeat last page if storybook doesn't have a full 6 pages
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2266 //hack to deal with storybooks that skip page 5
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2267 page_num--;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2268 }
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2269 if (gen->pico_story_pages[page_num] != 0xFF) {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2270 render_draw_image(gen->pico_story_window, gen->pico_story_pages[page_num], x, 0, width, 320);
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2271 } else {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2272 uint8_t grey = page * (255 / 5);
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2273 render_fill_rect(gen->pico_story_window, grey, grey, grey, x, 0, width, 320);
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2274 }
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2275 render_window_refresh(gen->pico_story_window);
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2276 #endif
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2277 }
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2278
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2279 static void gamepad_down_pico(system_header *system, uint8_t gamepad_num, uint8_t button)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2280 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2281 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2282 if (gamepad_num != 1) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2283 return;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2284 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2285 //TODO: storyware display
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2286 if (button == BUTTON_C) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2287 gen->pico_page <<= 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2288 gen->pico_page |= 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2289 gen->pico_page &= 0x3F;
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2290 pico_update_page(gen);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2291 } else if (button == BUTTON_Z) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2292 gen->pico_page >>= 1;
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2293 pico_update_page(gen);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2294 } else if (button < BUTTON_B) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2295 gen->pico_button_state &= ~(1 << (button - 1));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2296 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2297 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2298
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2299 static void gamepad_up_pico(system_header *system, uint8_t gamepad_num, uint8_t button)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2300 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2301 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2302 if (gamepad_num != 1) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2303 return;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2304 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2305 if (button < BUTTON_B) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2306 gen->pico_button_state |= 1 << (button - 1);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2307 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2308 return;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2309 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2310
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2311 static void mouse_down(system_header *system, uint8_t mouse_num, uint8_t button)
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2312 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2313 genesis_context *gen = (genesis_context *)system;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2314 io_mouse_down(&gen->io, mouse_num, button);
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2315 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2316
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2317 static void mouse_up(system_header *system, uint8_t mouse_num, uint8_t button)
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2318 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2319 genesis_context *gen = (genesis_context *)system;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2320 io_mouse_up(&gen->io, mouse_num, button);
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2321 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2322
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2323 static void mouse_down_pico(system_header *system, uint8_t mouse_num, uint8_t button)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2324 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2325 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2326 if (button == MOUSE_LEFT) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2327 gen->pico_button_state &= ~0x80;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2328 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2329 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2330
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2331 static void mouse_up_pico(system_header *system, uint8_t mouse_num, uint8_t button)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2332 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2333 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2334 if (button == MOUSE_LEFT) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2335 gen->pico_button_state |= 0x80;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2336 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2337 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2338
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2339 static void mouse_motion_absolute(system_header *system, uint8_t mouse_num, uint16_t x, uint16_t y)
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2340 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2341 genesis_context *gen = (genesis_context *)system;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2342 io_mouse_motion_absolute(&gen->io, mouse_num, x, y);
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2343 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2344
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2345 static void mouse_motion_relative(system_header *system, uint8_t mouse_num, int32_t x, int32_t y)
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2346 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2347 genesis_context *gen = (genesis_context *)system;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2348 io_mouse_motion_relative(&gen->io, mouse_num, x, y);
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2349 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2350
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2351 static void mouse_motion_absolute_pico(system_header *system, uint8_t mouse_num, uint16_t x, uint16_t y)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2352 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2353 genesis_context *gen = (genesis_context *)system;
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2354 //FIXME: coordinate translation feels a little off for storybook area
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2355 //TODO: limit to mouse motion on emulated storyware/drawing area
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2356 if (y < 24) {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2357 y = 24;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2358 }
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2359 gen->pico_pen_x = x * (0x17D - 0x3C) / 640 + 0x3C;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2360 if (y < 320) {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2361 gen->pico_pen_y = (y-24) * (0x3F4-0x2F8) / (320-24) + 0x2F8;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2362 } else {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2363 gen->pico_pen_y = (y - 320) * (0x2f8-0x1FC) / 320 + 0x1FC;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2364 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2365 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2366
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2367 static void mouse_motion_relative_pico(system_header *system, uint8_t mouse_num, int32_t x, int32_t y)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2368 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2369 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2370 //TODO: scale properly
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2371 //TODO: limit to mouse motion on emulated storyware/drawing area
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2372 gen->pico_pen_x += x;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2373 gen->pico_pen_y += y;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2374 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2375
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2376 static void keyboard_down(system_header *system, uint8_t scancode)
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2377 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2378 genesis_context *gen = (genesis_context *)system;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2379 io_keyboard_down(&gen->io, scancode);
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2380 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2381
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2382 static void keyboard_up(system_header *system, uint8_t scancode)
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2383 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2384 genesis_context *gen = (genesis_context *)system;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2385 io_keyboard_up(&gen->io, scancode);
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2386 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2387
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2388 static void keyboard_down_pico(system_header *system, uint8_t scancode)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2389 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2390 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2391 //TODO: Keyboard Pico emulation
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2392 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2393
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2394 static void keyboard_up_pico(system_header *system, uint8_t scancode)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2395 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2396 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2397 //TODO: Keyboard Pico emulation
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2398 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2399
1798
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612
Michael Pavone <pavone@retrodev.com>
parents: 1796
diff changeset
2400 static void set_audio_config(genesis_context *gen)
1796
51417bb557b6 Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents: 1766
diff changeset
2401 {
51417bb557b6 Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents: 1766
diff changeset
2402 char *config_gain;
51417bb557b6 Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents: 1766
diff changeset
2403 config_gain = tern_find_path(config, "audio\0psg_gain\0", TVAL_PTR).ptrval;
51417bb557b6 Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents: 1766
diff changeset
2404 render_audio_source_gaindb(gen->psg->audio, config_gain ? atof(config_gain) : 0.0f);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2405 if (gen->header.type != SYSTEM_PICO && gen->header.type != SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2406 config_gain = tern_find_path(config, "audio\0fm_gain\0", TVAL_PTR).ptrval;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2407 render_audio_source_gaindb(gen->ym->audio, config_gain ? atof(config_gain) : 0.0f);
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
2408
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2409 char *config_dac = tern_find_path_default(config, "audio\0fm_dac\0", (tern_val){.ptrval="zero_offset"}, TVAL_PTR).ptrval;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2410 ym_enable_zero_offset(gen->ym, !strcmp(config_dac, "zero_offset"));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2411 }
2277
9e578fd493e1 Implement gain control for Ricoh PCM and CDDA with defaults based on Model 2 Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2272
diff changeset
2412
9e578fd493e1 Implement gain control for Ricoh PCM and CDDA with defaults based on Model 2 Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2272
diff changeset
2413 if (gen->expansion) {
9e578fd493e1 Implement gain control for Ricoh PCM and CDDA with defaults based on Model 2 Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2272
diff changeset
2414 segacd_context *cd = gen->expansion;
9e578fd493e1 Implement gain control for Ricoh PCM and CDDA with defaults based on Model 2 Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2272
diff changeset
2415 config_gain = tern_find_path(config, "audio\0rf5c164_gain\0", TVAL_PTR).ptrval;
9e578fd493e1 Implement gain control for Ricoh PCM and CDDA with defaults based on Model 2 Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2272
diff changeset
2416 render_audio_source_gaindb(cd->pcm.audio, config_gain ? atof(config_gain) : -6.0f);
9e578fd493e1 Implement gain control for Ricoh PCM and CDDA with defaults based on Model 2 Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2272
diff changeset
2417 config_gain = tern_find_path(config, "audio\0cdda_gain\0", TVAL_PTR).ptrval;
9e578fd493e1 Implement gain control for Ricoh PCM and CDDA with defaults based on Model 2 Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2272
diff changeset
2418 render_audio_source_gaindb(cd->fader.audio, config_gain ? atof(config_gain) : -9.5f);
9e578fd493e1 Implement gain control for Ricoh PCM and CDDA with defaults based on Model 2 Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2272
diff changeset
2419 }
1796
51417bb557b6 Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents: 1766
diff changeset
2420 }
51417bb557b6 Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents: 1766
diff changeset
2421
1595
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
2422 static void config_updated(system_header *system)
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
2423 {
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
2424 genesis_context *gen = (genesis_context *)system;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2425 if (gen->header.type == SYSTEM_GENESIS) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2426 setup_io_devices(config, &system->info, &gen->io);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2427 }
1798
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612
Michael Pavone <pavone@retrodev.com>
parents: 1796
diff changeset
2428 set_audio_config(gen);
2384
03e6ac327ba0 Handle changes to sample rate while content is running
Michael Pavone <pavone@retrodev.com>
parents: 2354
diff changeset
2429 //sample rate may have changed
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2430 if (gen->header.type != SYSTEM_PICO && gen->header.type != SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2431 ym_adjust_master_clock(gen->ym, gen->master_clock);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2432 }
2384
03e6ac327ba0 Handle changes to sample rate while content is running
Michael Pavone <pavone@retrodev.com>
parents: 2354
diff changeset
2433 psg_adjust_master_clock(gen->psg, gen->master_clock);
03e6ac327ba0 Handle changes to sample rate while content is running
Michael Pavone <pavone@retrodev.com>
parents: 2354
diff changeset
2434 if (gen->expansion) {
03e6ac327ba0 Handle changes to sample rate while content is running
Michael Pavone <pavone@retrodev.com>
parents: 2354
diff changeset
2435 segacd_config_updated(gen->expansion);
03e6ac327ba0 Handle changes to sample rate while content is running
Michael Pavone <pavone@retrodev.com>
parents: 2354
diff changeset
2436 }
1595
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
2437 }
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
2438
1909
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2439 static void start_vgm_log(system_header *system, char *filename)
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2440 {
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2441 genesis_context *gen = (genesis_context *)system;
2254
8b88d57d1218 Prevent VGM logging from getting messed up if slow/turbo is active at log start time
Michael Pavone <pavone@retrodev.com>
parents: 2248
diff changeset
2442 vgm_writer *vgm = vgm_write_open(filename, gen->version_reg & HZ50 ? 50 : 60, gen->normal_clock, gen->m68k->current_cycle);
1909
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2443 if (vgm) {
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2444 printf("Started logging VGM to %s\n", filename);
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2445 sync_sound(gen, vgm->last_cycle);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2446 if (gen->header.type != SYSTEM_PICO && gen->header.type != SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2447 ym_vgm_log(gen->ym, gen->normal_clock, vgm);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2448 }
2254
8b88d57d1218 Prevent VGM logging from getting messed up if slow/turbo is active at log start time
Michael Pavone <pavone@retrodev.com>
parents: 2248
diff changeset
2449 psg_vgm_log(gen->psg, gen->normal_clock, vgm);
1909
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2450 gen->header.vgm_logging = 1;
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2451 } else {
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2452 printf("Failed to start logging to %s\n", filename);
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2453 }
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2454 }
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2455
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2456 static void stop_vgm_log(system_header *system)
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2457 {
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2458 puts("Stopped VGM log");
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2459 genesis_context *gen = (genesis_context *)system;
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2460 vgm_close(gen->ym->vgm);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2461 if (gen->header.type != SYSTEM_PICO && gen->header.type != SYSTEM_COPERA) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2462 gen->ym->vgm = NULL;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2463 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2464 gen->psg->vgm = NULL;
1909
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2465 gen->header.vgm_logging = 0;
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2466 }
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2467
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2468 static void toggle_debug_view(system_header *system, uint8_t debug_view)
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2469 {
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
2470 #ifndef IS_LIB
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2471 genesis_context *gen = (genesis_context *)system;
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2472 if (debug_view < DEBUG_OSCILLOSCOPE) {
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2473 vdp_toggle_debug_view(gen->vdp, debug_view);
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2474 } else if (debug_view == DEBUG_OSCILLOSCOPE) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2475 if (gen->psg->scope) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2476 oscilloscope *scope = gen->psg->scope;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2477 if (gen->header.type == SYSTEM_PICO || gen->header.type == SYSTEM_COPERA) {
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2478 gen->adpcm->scope = NULL;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2479 } else {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2480 gen->ym->scope = NULL;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2481 }
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2482 gen->psg->scope = NULL;
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2483 if (gen->expansion) {
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2484 segacd_context *cd = gen->expansion;
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2485 cd->pcm.scope = NULL;
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2486 }
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2487 scope_close(scope);
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2488 } else {
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2489 oscilloscope *scope = create_oscilloscope();
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2490 if (gen->header.type == SYSTEM_PICO || gen->header.type == SYSTEM_COPERA) {
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2491 pico_pcm_enable_scope(gen->adpcm, scope, gen->normal_clock);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2492 } else {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2493 ym_enable_scope(gen->ym, scope, gen->normal_clock);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2494 }
2255
74112041b2c7 Proper calculation of sample rate for YM2612/PSG oscilloscope view
Michael Pavone <pavone@retrodev.com>
parents: 2254
diff changeset
2495 psg_enable_scope(gen->psg, scope, gen->normal_clock);
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2496 if (gen->expansion) {
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2497 segacd_context *cd = gen->expansion;
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2498 rf5c164_enable_scope(&cd->pcm, scope);
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2499 }
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2500 }
2271
3ef80963c2a7 Fix stamp address mask and add WIP CD graphics debug view
Michael Pavone <pavone@retrodev.com>
parents: 2267
diff changeset
2501 } else if (debug_view == DEBUG_CD_GRAPHICS && gen->expansion) {
3ef80963c2a7 Fix stamp address mask and add WIP CD graphics debug view
Michael Pavone <pavone@retrodev.com>
parents: 2267
diff changeset
2502 scd_toggle_graphics_debug(gen->expansion);
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2503 }
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
2504 #endif
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2505 }
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2506
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2507 static void *tmss_rom_write_16(uint32_t address, void *context, uint16_t value)
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2508 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2509 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2510 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2511 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2512 return gen->tmss_write_16(address, context, value);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2513 }
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
2514
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2515 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2516 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2517
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2518 static void *tmss_rom_write_8(uint32_t address, void *context, uint8_t value)
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2519 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2520 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2521 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2522 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2523 return gen->tmss_write_8(address, context, value);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2524 }
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
2525
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2526 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2527 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2528
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2529 static uint16_t tmss_rom_read_16(uint32_t address, void *context)
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2530 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2531 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2532 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2533 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2534 return gen->tmss_read_16(address, context);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2535 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2536 return ((uint16_t *)gen->tmss_buffer)[address >> 1];
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2537 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2538
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2539 static uint8_t tmss_rom_read_8(uint32_t address, void *context)
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2540 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2541 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2542 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2543 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2544 return gen->tmss_read_8(address, context);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2545 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2546 #ifdef BLASTEM_BIG_ENDIAN
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2547 return gen->tmss_buffer[address];
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2548 #else
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2549 return gen->tmss_buffer[address ^ 1];
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2550 #endif
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2551 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2552
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2553 static void *tmss_word_write_16(uint32_t address, void *context, uint16_t value)
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2554 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2555 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2556 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2557 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2558 address += gen->tmss_write_offset;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2559 uint16_t *dest = get_native_pointer(address, (void **)m68k->mem_pointers, &m68k->options->gen);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2560 *dest = value;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2561 m68k_handle_code_write(address, m68k);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2562 }
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
2563
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2564 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2565 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2566
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2567 static void *tmss_word_write_8(uint32_t address, void *context, uint8_t value)
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2568 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2569 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2570 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2571 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2572 address += gen->tmss_write_offset;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2573 uint8_t *dest = get_native_pointer(address & ~1, (void **)m68k->mem_pointers, &m68k->options->gen);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2574 #ifdef BLASTEM_BIG_ENDIAN
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2575 dest[address & 1] = value;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2576 #else
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2577 dest[address & 1 ^ 1] = value;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2578 #endif
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2579 m68k_handle_code_write(address & ~1, m68k);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2580 }
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
2581
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2582 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2583 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2584
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2585 static void *tmss_odd_write_16(uint32_t address, void *context, uint16_t value)
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2586 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2587 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2588 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2589 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2590 memmap_chunk const *chunk = find_map_chunk(address + gen->tmss_write_offset, &m68k->options->gen, 0, NULL);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2591 address >>= 1;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2592 uint8_t *base = (uint8_t *)m68k->mem_pointers[chunk->ptr_index];
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2593 base[address] = value;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2594 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2595 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2596 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2597
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2598 static void *tmss_odd_write_8(uint32_t address, void *context, uint8_t value)
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2599 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2600 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2601 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2602 if (gen->tmss && (address & 1)) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2603 memmap_chunk const *chunk = find_map_chunk(address + gen->tmss_write_offset, &m68k->options->gen, 0, NULL);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2604 address >>= 1;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2605 uint8_t *base = (uint8_t *)m68k->mem_pointers[chunk->ptr_index];
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2606 base[address] = value;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2607 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2608 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2609 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2610
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2611 static void *tmss_even_write_16(uint32_t address, void *context, uint16_t value)
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2612 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2613 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2614 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2615 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2616 memmap_chunk const *chunk = find_map_chunk(address + gen->tmss_write_offset, &m68k->options->gen, 0, NULL);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2617 address >>= 1;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2618 uint8_t *base = (uint8_t *)m68k->mem_pointers[chunk->ptr_index];
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2619 base[address] = value >> 8;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2620 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2621 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2622 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2623
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2624 static void *tmss_even_write_8(uint32_t address, void *context, uint8_t value)
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2625 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2626 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2627 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2628 if (gen->tmss && !(address & 1)) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2629 memmap_chunk const *chunk = find_map_chunk(address + gen->tmss_write_offset, &m68k->options->gen, 0, NULL);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2630 address >>= 1;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2631 uint8_t *base = (uint8_t *)m68k->mem_pointers[chunk->ptr_index];
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2632 base[address] = value;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2633 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2634 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2635 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2636
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2637 static genesis_context *shared_init(uint32_t system_opts, rom_info *rom, uint8_t force_region)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2638 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2639 static memmap_chunk z80_map[] = {
2134
9caebcfeac72 Implement word RAM interleaving in 1M mode, now passes mcd-verificator word RAM tests
Michael Pavone <pavone@retrodev.com>
parents: 2090
diff changeset
2640 { 0x0000, 0x4000, 0x1FFF, .flags = MMAP_READ | MMAP_WRITE | MMAP_CODE},
9caebcfeac72 Implement word RAM interleaving in 1M mode, now passes mcd-verificator word RAM tests
Michael Pavone <pavone@retrodev.com>
parents: 2090
diff changeset
2641 { 0x8000, 0x10000, 0x7FFF, .read_8 = z80_read_bank, .write_8 = z80_write_bank},
9caebcfeac72 Implement word RAM interleaving in 1M mode, now passes mcd-verificator word RAM tests
Michael Pavone <pavone@retrodev.com>
parents: 2090
diff changeset
2642 { 0x4000, 0x6000, 0x0003, .read_8 = z80_read_ym, .write_8 = z80_write_ym},
9caebcfeac72 Implement word RAM interleaving in 1M mode, now passes mcd-verificator word RAM tests
Michael Pavone <pavone@retrodev.com>
parents: 2090
diff changeset
2643 { 0x6000, 0x6100, 0xFFFF, .write_8 = z80_write_bank_reg},
9caebcfeac72 Implement word RAM interleaving in 1M mode, now passes mcd-verificator word RAM tests
Michael Pavone <pavone@retrodev.com>
parents: 2090
diff changeset
2644 { 0x7F00, 0x8000, 0x00FF, .read_8 = z80_vdp_port_read, .write_8 = z80_vdp_port_write}
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2645 };
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
2646
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2647 char *m68k_divider = tern_find_path(config, "clocks\0m68k_divider\0", TVAL_PTR).ptrval;
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2648 if (!m68k_divider) {
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2649 m68k_divider = "7";
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2650 }
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2651 MCLKS_PER_68K = atoi(m68k_divider);
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2652 if (!MCLKS_PER_68K) {
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2653 MCLKS_PER_68K = 7;
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2654 }
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
2655
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2656 genesis_context *gen = calloc(1, sizeof(genesis_context));
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2657 gen->header.set_speed_percent = set_speed_percent;
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2658 gen->header.start_context = start_genesis;
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2659 gen->header.resume_context = resume_genesis;
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2660 gen->header.load_save = load_save;
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2661 gen->header.persist_save = persist_save;
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
2662 gen->header.load_state = load_state;
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2663 gen->header.soft_reset = soft_reset;
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2664 gen->header.free_context = free_genesis;
1117
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents: 1116
diff changeset
2665 gen->header.get_open_bus_value = get_open_bus_value;
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2666 gen->header.request_exit = request_exit;
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
2667 gen->header.inc_debug_mode = inc_debug_mode;
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2668 gen->header.gamepad_down = gamepad_down;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2669 gen->header.gamepad_up = gamepad_up;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2670 gen->header.mouse_down = mouse_down;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2671 gen->header.mouse_up = mouse_up;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2672 gen->header.mouse_motion_absolute = mouse_motion_absolute;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2673 gen->header.mouse_motion_relative = mouse_motion_relative;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2674 gen->header.keyboard_down = keyboard_down;
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2675 gen->header.keyboard_up = keyboard_up;
1595
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
2676 gen->header.config_updated = config_updated;
1690
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
2677 gen->header.serialize = serialize;
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
2678 gen->header.deserialize = deserialize;
1909
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2679 gen->header.start_vgm_log = start_vgm_log;
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2680 gen->header.stop_vgm_log = stop_vgm_log;
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2681 gen->header.toggle_debug_view = toggle_debug_view;
1377
e587f16e7d3d Implemented SMS pause button
Michael Pavone <pavone@retrodev.com>
parents: 1374
diff changeset
2682 gen->header.type = SYSTEM_GENESIS;
1595
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
2683 gen->header.info = *rom;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2684 set_region(gen, rom, force_region);
1901
5433252329fb Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents: 1889
diff changeset
2685 tern_node *model = get_model(config, SYSTEM_GENESIS);
5433252329fb Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents: 1889
diff changeset
2686 uint8_t tmss = !strcmp(tern_find_ptr_default(model, "tmss", "off"), "on");
5433252329fb Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents: 1889
diff changeset
2687 if (tmss) {
5433252329fb Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents: 1889
diff changeset
2688 gen->version_reg |= 1;
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
2689 } else {
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
2690 gen->vdp_unlocked = 1;
1901
5433252329fb Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents: 1889
diff changeset
2691 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2692
1906
2d462aa78349 Make VDP VSRAM capacity respect model selection
Michael Pavone <pavone@retrodev.com>
parents: 1904
diff changeset
2693 uint8_t max_vsram = !strcmp(tern_find_ptr_default(model, "vsram", "40"), "64");
2194
01ff005b08f6 Very rudimentary support for Game Gear VDP emulation
Michael Pavone <pavone@retrodev.com>
parents: 2184
diff changeset
2694 gen->vdp = init_vdp_context(gen->version_reg & 0x40, max_vsram, VDP_GENESIS);
1117
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents: 1116
diff changeset
2695 gen->vdp->system = &gen->header;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2696 gen->frame_end = vdp_cycles_to_frame_end(gen->vdp);
1326
071e761bcdcf Fix a deficiency in the way types were handled in my ternary tree. Fixes in which some paths that were constructed from a template with variables would sometimes get an extra garbage character thrown in
Michael Pavone <pavone@retrodev.com>
parents: 1318
diff changeset
2697 char * config_cycles = tern_find_path(config, "clocks\0max_cycles\0", TVAL_PTR).ptrval;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2698 gen->max_cycles = config_cycles ? atoi(config_cycles) : DEFAULT_SYNC_INTERVAL;
1364
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
2699 gen->int_latency_prev1 = MCLKS_PER_68K * 32;
30123ca5856c Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents: 1348
diff changeset
2700 gen->int_latency_prev2 = MCLKS_PER_68K * 16;
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
2701
1565
61fafcbc2c38 Audio DRC now sounds good in both NTSC and PAL, just need to adjust constants to minimize latency without leading to dropouts
Michael Pavone <pavone@retrodev.com>
parents: 1557
diff changeset
2702 render_set_video_standard((gen->version_reg & HZ50) ? VID_PAL : VID_NTSC);
1946
c3c62dbf1ceb WIP netplay support
Michael Pavone <pavone@retrodev.com>
parents: 1932
diff changeset
2703 event_system_start(SYSTEM_GENESIS, (gen->version_reg & HZ50) ? VID_PAL : VID_NTSC, rom->name);
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
2704
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2705 gen->ym = malloc(sizeof(ym2612_context));
1904
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior
Michael Pavone <pavone@retrodev.com>
parents: 1902
diff changeset
2706 char *fm = tern_find_ptr_default(model, "fm", "discrete 2612");
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior
Michael Pavone <pavone@retrodev.com>
parents: 1902
diff changeset
2707 if (!strcmp(fm + strlen(fm) -4, "3834")) {
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior
Michael Pavone <pavone@retrodev.com>
parents: 1902
diff changeset
2708 system_opts |= YM_OPT_3834;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior
Michael Pavone <pavone@retrodev.com>
parents: 1902
diff changeset
2709 }
1555
6ce36c3f250b More audio refactoring in preparation for allowing proper sync to video with dynamic audio rate control
Michael Pavone <pavone@retrodev.com>
parents: 1551
diff changeset
2710 ym_init(gen->ym, gen->master_clock, MCLKS_PER_YM, system_opts);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2711
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2712 gen->psg = malloc(sizeof(psg_context));
1555
6ce36c3f250b More audio refactoring in preparation for allowing proper sync to video with dynamic audio rate control
Michael Pavone <pavone@retrodev.com>
parents: 1551
diff changeset
2713 psg_init(gen->psg, gen->master_clock, MCLKS_PER_PSG);
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
2714
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2715 z80_map[0].buffer = gen->zram = calloc(1, Z80_RAM_BYTES);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2716 #ifndef NO_Z80
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2717 z80_options *z_opts = malloc(sizeof(z80_options));
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
2718 init_z80_opts(z_opts, z80_map, 5, NULL, 0, MCLKS_PER_Z80, 0xFFFF);
1130
8f14767661fa Remove memory map assumptions from Z80 core and move a little bit of logic to the generic backend.c so it can be shared between CPU cores
Michael Pavone <pavone@retrodev.com>
parents: 1117
diff changeset
2719 gen->z80 = init_z80_context(z_opts);
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
2720 #ifndef NEW_CORE
1117
928a65750345 Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents: 1116
diff changeset
2721 gen->z80->next_int_pulse = z80_next_int_pulse;
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1690
diff changeset
2722 #endif
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2723 z80_assert_reset(gen->z80, 0);
1130
8f14767661fa Remove memory map assumptions from Z80 core and move a little bit of logic to the generic backend.c so it can be shared between CPU cores
Michael Pavone <pavone@retrodev.com>
parents: 1117
diff changeset
2724 #else
8f14767661fa Remove memory map assumptions from Z80 core and move a little bit of logic to the generic backend.c so it can be shared between CPU cores
Michael Pavone <pavone@retrodev.com>
parents: 1117
diff changeset
2725 gen->z80 = calloc(1, sizeof(z80_context));
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2726 #endif
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2727
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2728 gen->z80->system = gen;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2729 gen->z80->mem_pointers[0] = gen->zram;
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2730 gen->z80->mem_pointers[1] = gen->z80->mem_pointers[2] = NULL;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2731
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2732 gen->work_ram = calloc(2, RAM_WORDS);
1326
071e761bcdcf Fix a deficiency in the way types were handled in my ternary tree. Fixes in which some paths that were constructed from a template with variables would sometimes get an extra garbage character thrown in
Michael Pavone <pavone@retrodev.com>
parents: 1318
diff changeset
2733 if (!strcmp("random", tern_find_path_default(config, "system\0ram_init\0", (tern_val){.ptrval = "zero"}, TVAL_PTR).ptrval))
1204
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2734 {
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2735 srand(time(NULL));
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2736 for (int i = 0; i < RAM_WORDS; i++)
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2737 {
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2738 gen->work_ram[i] = rand();
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2739 }
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2740 for (int i = 0; i < Z80_RAM_BYTES; i++)
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2741 {
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2742 gen->zram[i] = rand();
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2743 }
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2744 for (int i = 0; i < VRAM_SIZE; i++)
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2745 {
1333
69c25e1188e5 Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
Michael Pavone <pavone@retrodev.com>
parents: 1326
diff changeset
2746 gen->vdp->vdpmem[i] = rand();
69c25e1188e5 Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
Michael Pavone <pavone@retrodev.com>
parents: 1326
diff changeset
2747 }
69c25e1188e5 Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
Michael Pavone <pavone@retrodev.com>
parents: 1326
diff changeset
2748 for (int i = 0; i < SAT_CACHE_SIZE; i++)
69c25e1188e5 Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
Michael Pavone <pavone@retrodev.com>
parents: 1326
diff changeset
2749 {
69c25e1188e5 Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
Michael Pavone <pavone@retrodev.com>
parents: 1326
diff changeset
2750 gen->vdp->sat_cache[i] = rand();
1204
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2751 }
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2752 for (int i = 0; i < CRAM_SIZE; i++)
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2753 {
1428
2540c05520f2 New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents: 1427
diff changeset
2754 write_cram_internal(gen->vdp, i, rand());
1204
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2755 }
1906
2d462aa78349 Make VDP VSRAM capacity respect model selection
Michael Pavone <pavone@retrodev.com>
parents: 1904
diff changeset
2756 for (int i = 0; i < gen->vdp->vsram_size; i++)
1204
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2757 {
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2758 gen->vdp->vsram[i] = rand();
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2759 }
d7be5b6e0a8d Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents: 1188
diff changeset
2760 }
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
2761
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2762 return gen;
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2763 }
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2764
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2765 static memmap_chunk base_map[] = {
2134
9caebcfeac72 Implement word RAM interleaving in 1M mode, now passes mcd-verificator word RAM tests
Michael Pavone <pavone@retrodev.com>
parents: 2090
diff changeset
2766 {0xE00000, 0x1000000, 0xFFFF, .flags = MMAP_READ | MMAP_WRITE | MMAP_CODE},
9caebcfeac72 Implement word RAM interleaving in 1M mode, now passes mcd-verificator word RAM tests
Michael Pavone <pavone@retrodev.com>
parents: 2090
diff changeset
2767 {0xC00000, 0xE00000, 0x1FFFFF, .read_16 = (read_16_fun)vdp_port_read, .write_16 =(write_16_fun)vdp_port_write,
9caebcfeac72 Implement word RAM interleaving in 1M mode, now passes mcd-verificator word RAM tests
Michael Pavone <pavone@retrodev.com>
parents: 2090
diff changeset
2768 .read_8 = (read_8_fun)vdp_port_read_b, .write_8 = (write_8_fun)vdp_port_write_b},
9caebcfeac72 Implement word RAM interleaving in 1M mode, now passes mcd-verificator word RAM tests
Michael Pavone <pavone@retrodev.com>
parents: 2090
diff changeset
2769 {0xA00000, 0xA12000, 0x1FFFF, .read_16 = (read_16_fun)io_read_w, .write_16 = (write_16_fun)io_write_w,
9caebcfeac72 Implement word RAM interleaving in 1M mode, now passes mcd-verificator word RAM tests
Michael Pavone <pavone@retrodev.com>
parents: 2090
diff changeset
2770 .read_8 = (read_8_fun)io_read, .write_8 = (write_8_fun)io_write},
9caebcfeac72 Implement word RAM interleaving in 1M mode, now passes mcd-verificator word RAM tests
Michael Pavone <pavone@retrodev.com>
parents: 2090
diff changeset
2771 {0x000000, 0xFFFFFF, 0xFFFFFF, .read_16 = (read_16_fun)unused_read, .write_16 = unused_write,
9caebcfeac72 Implement word RAM interleaving in 1M mode, now passes mcd-verificator word RAM tests
Michael Pavone <pavone@retrodev.com>
parents: 2090
diff changeset
2772 .read_8 = (read_8_fun)unused_read_b, .write_8 = (write_8_fun)unused_write_b}
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2773 };
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2774 const size_t base_chunks = sizeof(base_map)/sizeof(*base_map);
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2775
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2776 genesis_context *alloc_config_genesis(void *rom, uint32_t rom_size, void *lock_on, uint32_t lock_on_size, uint32_t ym_opts, uint8_t force_region)
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2777 {
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2778 tern_node *rom_db = get_rom_db();
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2779 rom_info info = configure_rom(rom_db, rom, rom_size, lock_on, lock_on_size, base_map, base_chunks);
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2780 rom = info.rom;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2781 rom_size = info.rom_size;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2782 #ifndef BLASTEM_BIG_ENDIAN
2150
a418fa599b2e Add ROM DB entry to fix SRAM on Triple Play: Gold Edition and make some code changes so that 3MB dumps will work too
Michael Pavone <pavone@retrodev.com>
parents: 2134
diff changeset
2783 byteswap_rom(nearest_pow2(rom_size), rom);
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2784 if (lock_on) {
2150
a418fa599b2e Add ROM DB entry to fix SRAM on Triple Play: Gold Edition and make some code changes so that 3MB dumps will work too
Michael Pavone <pavone@retrodev.com>
parents: 2134
diff changeset
2785 byteswap_rom(nearest_pow2(lock_on_size), lock_on);
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2786 }
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2787 #endif
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2788 char *m68k_divider = tern_find_path(config, "clocks\0m68k_divider\0", TVAL_PTR).ptrval;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2789 if (!m68k_divider) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2790 m68k_divider = "7";
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2791 }
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2792 MCLKS_PER_68K = atoi(m68k_divider);
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2793 if (!MCLKS_PER_68K) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2794 MCLKS_PER_68K = 7;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2795 }
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2796 genesis_context *gen = shared_init(ym_opts, &info, force_region);
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2797 gen->z80->mem_pointers[1] = gen->z80->mem_pointers[2] = rom;
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2798
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2799 gen->cart = rom;
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
2800 gen->lock_on = lock_on;
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
2801
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2802 setup_io_devices(config, &info, &gen->io);
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2803 gen->header.has_keyboard = io_has_keyboard(&gen->io);
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2804 gen->mapper_type = info.mapper_type;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2805 gen->save_type = info.save_type;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2806 if (gen->save_type != SAVE_NONE) {
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2807 gen->save_ram_mask = info.save_mask;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2808 gen->save_size = info.save_size;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2809 gen->save_storage = info.save_buffer;
2286
5d3411f52d00 Fix ui.reload for locked-on ROMs
Michael Pavone <pavone@retrodev.com>
parents: 2281
diff changeset
2810 gen->header.info.save_buffer = info.save_buffer = NULL;
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2811 gen->eeprom_map = info.eeprom_map;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2812 gen->num_eeprom = info.num_eeprom;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2813 if (gen->save_type == SAVE_I2C) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2814 eeprom_init(&gen->eeprom, gen->save_storage, gen->save_size);
1395
efa7225e0f07 Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents: 1377
diff changeset
2815 } else if (gen->save_type == SAVE_NOR) {
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2816 memcpy(&gen->nor, info.nor, sizeof(gen->nor));
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2817 //nor_flash_init(&gen->nor, gen->save_storage, gen->save_size, info.save_page_size, info.save_product_id, info.save_bus);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2818 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2819 } else {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2820 gen->save_storage = NULL;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2821 }
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
2822
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2823 gen->mapper_start_index = info.mapper_start_index;
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
2824
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
2825 tern_node *model = get_model(config, SYSTEM_GENESIS);
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
2826 uint8_t tmss = !strcmp(tern_find_ptr_default(model, "tmss", "off"), "on");
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
2827
1165
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
2828 //This must happen before we generate memory access functions in init_m68k_opts
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2829 uint8_t next_ptr_index = 0;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2830 uint32_t tmss_min_alloc = 16 * 1024;
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2831 for (int i = 0; i < info.map_chunks; i++)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2832 {
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2833 if (info.map[i].start == 0xE00000) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2834 info.map[i].buffer = gen->work_ram;
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2835 if (!tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2836 break;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2837 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2838 }
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2839 if (info.map[i].flags & MMAP_PTR_IDX && info.map[i].ptr_index >= next_ptr_index) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2840 next_ptr_index = info.map[i].ptr_index + 1;
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2841 }
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2842 if (info.map[i].start < 0x400000 && info.map[i].read_16 != unused_read) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2843 uint32_t highest_offset = (info.map[i].end & info.map[i].mask) + 1;
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2844 if (highest_offset > tmss_min_alloc) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2845 tmss_min_alloc = highest_offset;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2846 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2847 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2848 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2849 if (tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2850 char *tmss_path = tern_find_path_default(config, "system\0tmss_path\0", (tern_val){.ptrval = "tmss.md"}, TVAL_PTR).ptrval;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2851 uint8_t *buffer = malloc(tmss_min_alloc);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2852 uint32_t tmss_size;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2853 if (is_absolute_path(tmss_path)) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2854 FILE *f = fopen(tmss_path, "rb");
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2855 if (!f) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2856 fatal_error("Configured to use a model with TMSS, but failed to load the TMSS ROM from %s\n", tmss_path);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2857 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2858 tmss_size = fread(buffer, 1, tmss_min_alloc, f);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2859 fclose(f);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2860 } else {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2861 char *tmp = read_bundled_file(tmss_path, &tmss_size);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2862 if (!tmp) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2863 fatal_error("Configured to use a model with TMSS, but failed to load the TMSS ROM from %s\n", tmss_path);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2864 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2865 memcpy(buffer, tmp, tmss_size);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2866 free(tmp);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2867 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2868 for (uint32_t padded = nearest_pow2(tmss_size); tmss_size < padded; tmss_size++)
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2869 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2870 buffer[tmss_size] = 0xFF;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2871 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2872 #ifndef BLASTEM_BIG_ENDIAN
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2873 byteswap_rom(tmss_size, (uint16_t *)buffer);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2874 #endif
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2875 //mirror TMSS ROM until we fill up to tmss_min_alloc
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2876 for (uint32_t dst = tmss_size; dst < tmss_min_alloc; dst += tmss_size)
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2877 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2878 memcpy(buffer + dst, buffer, dst + tmss_size > tmss_min_alloc ? tmss_min_alloc - dst : tmss_size);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2879 }
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2880 //modify mappings for ROM space to point to the TMSS ROM and fixup flags to allow switching back and forth
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2881 //WARNING: This code makes some pretty big assumptions about the kinds of map chunks it will encounter
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2882 for (int i = 0; i < info.map_chunks; i++)
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2883 {
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2884 if (info.map[i].start < 0x400000 && info.map[i].read_16 != unused_read) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2885 if (info.map[i].flags == MMAP_READ) {
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2886 //Normal ROM
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2887 info.map[i].flags |= MMAP_PTR_IDX | MMAP_CODE;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2888 info.map[i].ptr_index = next_ptr_index++;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2889 if (info.map[i].ptr_index >= NUM_MEM_AREAS) {
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2890 fatal_error("Too many memmap chunks with MMAP_PTR_IDX after TMSS remap\n");
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2891 }
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2892 gen->tmss_pointers[info.map[i].ptr_index] = info.map[i].buffer;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2893 info.map[i].buffer = buffer + (info.map[i].start & ~info.map[i].mask & (tmss_size - 1));
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2894 } else if (info.map[i].flags & MMAP_PTR_IDX) {
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2895 //Sega mapper page or multi-game mapper
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2896 gen->tmss_pointers[info.map[i].ptr_index] = info.map[i].buffer;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2897 info.map[i].buffer = buffer + (info.map[i].start & ~info.map[i].mask & (tmss_size - 1));
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2898 if (info.map[i].write_16) {
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2899 if (!gen->tmss_write_16) {
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2900 gen->tmss_write_16 = info.map[i].write_16;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2901 gen->tmss_write_8 = info.map[i].write_8;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2902 info.map[i].write_16 = tmss_rom_write_16;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2903 info.map[i].write_8 = tmss_rom_write_8;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2904 } else if (gen->tmss_write_16 == info.map[i].write_16) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2905 info.map[i].write_16 = tmss_rom_write_16;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2906 info.map[i].write_8 = tmss_rom_write_8;
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2907 } else {
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2908 warning("Chunk starting at %X has a write function, but we've already stored a different one for TMSS remap\n", info.map[i].start);
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2909 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2910 }
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2911 } else if ((info.map[i].flags & (MMAP_READ | MMAP_WRITE)) == (MMAP_READ | MMAP_WRITE)) {
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2912 //RAM or SRAM
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2913 info.map[i].flags |= MMAP_PTR_IDX;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2914 info.map[i].ptr_index = next_ptr_index++;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2915 gen->tmss_pointers[info.map[i].ptr_index] = info.map[i].buffer;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2916 info.map[i].buffer = buffer + (info.map[i].start & ~info.map[i].mask & (tmss_size - 1));
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2917 if (!gen->tmss_write_offset || gen->tmss_write_offset == info.map[i].start) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2918 gen->tmss_write_offset = info.map[i].start;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2919 info.map[i].flags &= ~MMAP_WRITE;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2920 if (info.map[i].flags & MMAP_ONLY_ODD) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2921 info.map[i].write_16 = tmss_odd_write_16;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2922 info.map[i].write_8 = tmss_odd_write_8;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2923 } else if (info.map[i].flags & MMAP_ONLY_EVEN) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2924 info.map[i].write_16 = tmss_even_write_16;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2925 info.map[i].write_8 = tmss_even_write_8;
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2926 } else {
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2927 info.map[i].write_16 = tmss_word_write_16;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2928 info.map[i].write_8 = tmss_word_write_8;
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2929 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2930 } else {
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2931 warning("Could not remap writes for chunk starting at %X for TMSS because write_offset is %X\n", info.map[i].start, gen->tmss_write_offset);
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2932 }
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2933 } else if (info.map[i].flags & MMAP_READ_CODE) {
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2934 //NOR flash
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2935 info.map[i].flags |= MMAP_PTR_IDX;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2936 info.map[i].ptr_index = next_ptr_index++;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2937 if (info.map[i].ptr_index >= NUM_MEM_AREAS) {
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2938 fatal_error("Too many memmap chunks with MMAP_PTR_IDX after TMSS remap\n");
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2939 }
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2940 gen->tmss_pointers[info.map[i].ptr_index] = info.map[i].buffer;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2941 info.map[i].buffer = buffer + (info.map[i].start & ~info.map[i].mask & (tmss_size - 1));
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2942 if (!gen->tmss_write_16) {
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2943 gen->tmss_write_16 = info.map[i].write_16;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2944 gen->tmss_write_8 = info.map[i].write_8;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2945 gen->tmss_read_16 = info.map[i].read_16;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2946 gen->tmss_read_8 = info.map[i].read_8;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2947 info.map[i].write_16 = tmss_rom_write_16;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2948 info.map[i].write_8 = tmss_rom_write_8;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2949 info.map[i].read_16 = tmss_rom_read_16;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2950 info.map[i].read_8 = tmss_rom_read_8;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2951 } else if (gen->tmss_write_16 == info.map[i].write_16) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2952 info.map[i].write_16 = tmss_rom_write_16;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2953 info.map[i].write_8 = tmss_rom_write_8;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2954 info.map[i].read_16 = tmss_rom_read_16;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2955 info.map[i].read_8 = tmss_rom_read_8;
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2956 } else {
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2957 warning("Chunk starting at %X has a write function, but we've already stored a different one for TMSS remap\n", info.map[i].start);
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2958 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2959 } else {
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2960 warning("Didn't remap chunk starting at %X for TMSS because it has flags %X\n", info.map[i].start, info.map[i].flags);
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2961 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2962 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2963 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2964 gen->tmss_buffer = buffer;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2965 }
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2966 memmap_chunk* map = info.map;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2967 uint32_t map_chunks = info.map_chunks;
2088
c716af3f8980 Enable Sega CD emulation for carts if a CD image is "locked-on" even if the cart does not specify that it uses the CD peripheral in the header
Michael Pavone <pavone@retrodev.com>
parents: 2083
diff changeset
2968 if (info.wants_cd || (current_media()->chain && current_media()->chain->type == MEDIA_CDROM)) {
2277
9e578fd493e1 Implement gain control for Ricoh PCM and CDDA with defaults based on Model 2 Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2272
diff changeset
2969 gen->header.type = SYSTEM_SEGACD;
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2970 segacd_context *cd = alloc_configure_segacd((system_media *)current_media(), 0, force_region, &info);
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2971 gen->expansion = cd;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2972 gen->version_reg &= ~NO_DISK;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2973 cd->genesis = gen;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2974 uint32_t cd_chunks;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2975 memmap_chunk *cd_map = segacd_main_cpu_map(gen->expansion, 1, &cd_chunks);
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2976 map_chunks = cd_chunks + info.map_chunks;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2977 map = calloc(map_chunks, sizeof(memmap_chunk));
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2978 memcpy(map, info.map, sizeof(memmap_chunk) * (info.map_chunks - 1));
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2979 memcpy(map + info.map_chunks - 1, cd_map, sizeof(memmap_chunk) * cd_chunks);
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2980 memcpy(map + map_chunks - 1, info.map + info.map_chunks - 1, sizeof(memmap_chunk));
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2981 free(info.map);
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2982 int max_ptr_index = -1;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2983 for (int i = 0; i < info.map_chunks - 1; i++)
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2984 {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2985 if (map[i].flags & MMAP_PTR_IDX && map[i].ptr_index > max_ptr_index) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2986 max_ptr_index = map[i].ptr_index;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2987 }
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2988 }
2090
00b6592cad42 Fix typo that messed up Mode 1 for carts with mappers
Michael Pavone <pavone@retrodev.com>
parents: 2088
diff changeset
2989 cd->memptr_start_index = max_ptr_index + 1;
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2990 for (int i = info.map_chunks - 1; i < map_chunks - 1; i++)
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2991 {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2992 if (map[i].flags & MMAP_PTR_IDX) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2993 map[i].ptr_index += cd->memptr_start_index;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2994 }
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2995 }
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2996 cd->base = 0x400000;
2272
777900eb8e15 Add address logging support to sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 2271
diff changeset
2997 cd->m68k->options->address_log = (ym_opts & OPT_ADDRESS_LOG) ? fopen("address_sub.log", "w") : NULL;
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
2998 }
2248
f7e2e11f1214 Fix improper free of memory map array from rom_info
Michael Pavone <pavone@retrodev.com>
parents: 2243
diff changeset
2999 info.map = gen->header.info.map = NULL;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
3000
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
3001 m68k_options *opts = malloc(sizeof(m68k_options));
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
3002 init_m68k_opts(opts, map, map_chunks, MCLKS_PER_68K, sync_components, int_ack);
1901
5433252329fb Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents: 1889
diff changeset
3003 if (!strcmp(tern_find_ptr_default(model, "tas", "broken"), "broken")) {
5433252329fb Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents: 1889
diff changeset
3004 opts->gen.flags |= M68K_OPT_BROKEN_READ_MODIFY;
5433252329fb Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents: 1889
diff changeset
3005 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
3006 gen->m68k = init_68k_context(opts, NULL);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
3007 gen->m68k->system = gen;
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
3008 opts->address_log = (ym_opts & OPT_ADDRESS_LOG) ? fopen("address.log", "w") : NULL;
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
3009
1165
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
3010 //This must happen after the 68K context has been allocated
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
3011 for (int i = 0; i < map_chunks; i++)
1165
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
3012 {
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
3013 if (map[i].flags & MMAP_PTR_IDX) {
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
3014 gen->m68k->mem_pointers[map[i].ptr_index] = map[i].buffer;
1165
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
3015 }
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
3016 }
2052
3748a2a8a4b7 Support Sega mapper without 'SEGA SSF' in header or ROM DB entry and implement a subset of the extended Sega mapper implemented in the Mega Everdrive when 'SEGA SSF' is present
Michael Pavone <pavone@retrodev.com>
parents: 2039
diff changeset
3017
1452
f284ad74afe1 Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents: 1449
diff changeset
3018 if (gen->mapper_type == MAPPER_SEGA) {
f284ad74afe1 Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents: 1449
diff changeset
3019 //initialize bank registers
f284ad74afe1 Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents: 1449
diff changeset
3020 for (int i = 1; i < sizeof(gen->bank_regs); i++)
f284ad74afe1 Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents: 1449
diff changeset
3021 {
f284ad74afe1 Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents: 1449
diff changeset
3022 gen->bank_regs[i] = i;
f284ad74afe1 Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents: 1449
diff changeset
3023 }
f284ad74afe1 Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents: 1449
diff changeset
3024 }
1954
2fd0a8cb1c80 Properly initialize Genesis reset cycle on startup. Fixes crash in GDB remote debugger when stepping past the first two instructions
Michael Pavone <pavone@retrodev.com>
parents: 1946
diff changeset
3025 gen->reset_cycle = CYCLE_NEVER;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
3026
2277
9e578fd493e1 Implement gain control for Ricoh PCM and CDDA with defaults based on Model 2 Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2272
diff changeset
3027 set_audio_config(gen);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
3028 return gen;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
3029 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
3030
1692
5dacaef602a7 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1503 1643
diff changeset
3031 genesis_context *alloc_config_genesis_cdboot(system_media *media, uint32_t system_opts, uint8_t force_region)
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3032 {
1692
5dacaef602a7 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1503 1643
diff changeset
3033 tern_node *rom_db = get_rom_db();
5dacaef602a7 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1503 1643
diff changeset
3034 rom_info info = configure_rom(rom_db, media->buffer, media->size, NULL, 0, base_map, base_chunks);
2267
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3035 if (media->size > 0x20B) {
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3036 //Use a byte in the security code region that's unique across all 3 regions
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3037 //since it's more reliable than the official header field for this
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3038 uint8_t *bytes = media->buffer;
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3039 switch (bytes[0x20B])
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3040 {
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3041 case 0x7A:
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3042 info.regions = REGION_U;
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3043 break;
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3044 case 0xA1:
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3045 info.regions = REGION_J;
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3046 break;
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3047 case 0x64:
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3048 info.regions = REGION_E;
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3049 break;
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3050 }
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3051 }
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
3052
1692
5dacaef602a7 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1503 1643
diff changeset
3053 segacd_context *cd = alloc_configure_segacd(media, system_opts, force_region, &info);
5dacaef602a7 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1503 1643
diff changeset
3054 genesis_context *gen = shared_init(system_opts, &info, force_region);
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3055 gen->cart = gen->lock_on = NULL;
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3056 gen->save_storage = NULL;
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3057 gen->save_type = SAVE_NONE;
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3058 gen->version_reg &= ~NO_DISK;
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
3059
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3060 gen->expansion = cd;
2272
777900eb8e15 Add address logging support to sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 2271
diff changeset
3061 cd->m68k->options->address_log = (system_opts & OPT_ADDRESS_LOG) ? fopen("address_sub.log", "w") : NULL;
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
3062 gen->version_reg &= ~NO_DISK;
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
3063 cd->genesis = gen;
1692
5dacaef602a7 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1503 1643
diff changeset
3064 setup_io_devices(config, &info, &gen->io);
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
3065
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3066 uint32_t cd_chunks;
2054
8ee7ecbf3f21 Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
Michael Pavone <pavone@retrodev.com>
parents: 2053
diff changeset
3067 memmap_chunk *cd_map = segacd_main_cpu_map(gen->expansion, 0, &cd_chunks);
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3068 memmap_chunk *map = malloc(sizeof(memmap_chunk) * (cd_chunks + base_chunks));
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3069 memcpy(map, cd_map, sizeof(memmap_chunk) * cd_chunks);
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3070 memcpy(map + cd_chunks, base_map, sizeof(memmap_chunk) * base_chunks);
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3071 map[cd_chunks].buffer = gen->work_ram;
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3072 uint32_t num_chunks = cd_chunks + base_chunks;
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
3073
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3074 m68k_options *opts = malloc(sizeof(m68k_options));
2350
f8b5142c06aa Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
Michael Pavone <pavone@retrodev.com>
parents: 2336
diff changeset
3075 init_m68k_opts(opts, map, num_chunks, MCLKS_PER_68K, sync_components, int_ack);
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3076 //TODO: make this configurable
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3077 opts->gen.flags |= M68K_OPT_BROKEN_READ_MODIFY;
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3078 gen->m68k = init_68k_context(opts, NULL);
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3079 gen->m68k->system = gen;
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3080 opts->address_log = (system_opts & OPT_ADDRESS_LOG) ? fopen("address.log", "w") : NULL;
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
3081
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3082 //This must happen after the 68K context has been allocated
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3083 for (int i = 0; i < num_chunks; i++)
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3084 {
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3085 if (map[i].flags & MMAP_PTR_IDX) {
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3086 gen->m68k->mem_pointers[map[i].ptr_index] = map[i].buffer;
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3087 }
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3088 }
2083
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
3089 gen->header.type = SYSTEM_SEGACD;
2277
9e578fd493e1 Implement gain control for Ricoh PCM and CDDA with defaults based on Model 2 Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2272
diff changeset
3090
9e578fd493e1 Implement gain control for Ricoh PCM and CDDA with defaults based on Model 2 Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2272
diff changeset
3091 set_audio_config(gen);
1503
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3092 return gen;
a763523dadf4 Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
Michael Pavone <pavone@retrodev.com>
parents: 1452
diff changeset
3093 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3094
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3095 static memmap_chunk pico_base_map[] = {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3096 {0xE00000, 0x1000000, 0xFFFF, .flags = MMAP_READ | MMAP_WRITE | MMAP_CODE},
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3097 {0xC00000, 0xE00000, 0x1FFFFF, .read_16 = (read_16_fun)vdp_port_read, .write_16 =(write_16_fun)vdp_port_write,
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3098 .read_8 = (read_8_fun)vdp_port_read_b, .write_8 = (write_8_fun)vdp_port_write_b},
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3099 {0x800000, 0x900000, 0xFFFFFF, .read_16 = pico_io_read_w, .write_16 = pico_io_write_w,
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3100 .read_8 = pico_io_read, .write_8 = pico_io_write},
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3101 {0xB00000, 0xC00000, 0xFFFFFF, .read_16 = copera_io_read_w, .write_16 = copera_io_write_w,
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3102 .read_8 = copera_io_read, .write_8 = copera_io_write}
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3103 };
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3104 const size_t pico_base_chunks = sizeof(pico_base_map)/sizeof(*pico_base_map);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3105
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3106 genesis_context* alloc_config_pico(void *rom, uint32_t rom_size, void *lock_on, uint32_t lock_on_size, uint32_t ym_opts, uint8_t force_region, system_type stype)
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3107 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3108 tern_node *rom_db = get_rom_db();
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3109 uint32_t chunks = pico_base_chunks;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3110 if (stype == SYSTEM_PICO) {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3111 chunks--;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3112 }
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3113 rom_info info = configure_rom(rom_db, rom, rom_size, lock_on, lock_on_size, pico_base_map, chunks);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3114 rom = info.rom;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3115 rom_size = info.rom_size;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3116 #ifndef BLASTEM_BIG_ENDIAN
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3117 byteswap_rom(nearest_pow2(rom_size), rom);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3118 if (lock_on) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3119 byteswap_rom(nearest_pow2(lock_on_size), lock_on);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3120 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3121 #endif
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3122 char *m68k_divider = tern_find_path(config, "clocks\0m68k_divider\0", TVAL_PTR).ptrval;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3123 if (!m68k_divider) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3124 m68k_divider = "7";
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3125 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3126 MCLKS_PER_68K = atoi(m68k_divider);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3127 if (!MCLKS_PER_68K) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3128 MCLKS_PER_68K = 7;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3129 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3130 genesis_context *gen = calloc(1, sizeof(genesis_context));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3131 gen->header.set_speed_percent = set_speed_percent;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3132 gen->header.start_context = start_genesis;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3133 gen->header.resume_context = resume_genesis;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3134 gen->header.load_save = load_save;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3135 gen->header.persist_save = persist_save;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3136 gen->header.load_state = load_state;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3137 gen->header.soft_reset = soft_reset;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3138 gen->header.free_context = free_genesis;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3139 gen->header.get_open_bus_value = get_open_bus_value;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3140 gen->header.request_exit = request_exit;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3141 gen->header.inc_debug_mode = inc_debug_mode;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3142 gen->header.gamepad_down = gamepad_down_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3143 gen->header.gamepad_up = gamepad_up_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3144 gen->header.mouse_down = mouse_down_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3145 gen->header.mouse_up = mouse_up_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3146 gen->header.mouse_motion_absolute = mouse_motion_absolute_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3147 gen->header.mouse_motion_relative = mouse_motion_relative_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3148 gen->header.keyboard_down = keyboard_down_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3149 gen->header.keyboard_up = keyboard_up_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3150 gen->header.config_updated = config_updated;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3151 gen->header.serialize = serialize;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3152 gen->header.deserialize = deserialize;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3153 gen->header.start_vgm_log = start_vgm_log;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3154 gen->header.stop_vgm_log = stop_vgm_log;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3155 gen->header.toggle_debug_view = toggle_debug_view;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3156 gen->header.type = stype;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3157 gen->header.info = info;
2437
79a8cccb6ac1 Add region override for German version of The Lion King for Pico
Michael Pavone <pavone@retrodev.com>
parents: 2433
diff changeset
3158 set_region(gen, &info, force_region);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3159 gen->vdp_unlocked = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3160 gen->pico_button_state = 0xFF;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3161
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3162 gen->vdp = init_vdp_context((gen->version_reg & 0x60) == 0x20, 40, VDP_GENESIS);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3163 gen->vdp->system = &gen->header;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3164 gen->frame_end = vdp_cycles_to_frame_end(gen->vdp);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3165 char * config_cycles = tern_find_path(config, "clocks\0max_cycles\0", TVAL_PTR).ptrval;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3166 gen->max_cycles = config_cycles ? atoi(config_cycles) : DEFAULT_SYNC_INTERVAL;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3167 gen->int_latency_prev1 = MCLKS_PER_68K * 32;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3168 gen->int_latency_prev2 = MCLKS_PER_68K * 16;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3169
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3170 render_set_video_standard((gen->version_reg & 0x60) == 0x20 ? VID_PAL : VID_NTSC);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3171
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3172 gen->psg = calloc(1, sizeof(psg_context));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3173 psg_init(gen->psg, gen->master_clock, MCLKS_PER_PSG);
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
3174
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
3175 gen->adpcm = calloc(1, sizeof(pico_pcm));
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
3176 pico_pcm_init(gen->adpcm, gen->master_clock, 42);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
3177
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
3178 if (stype == SYSTEM_COPERA) {
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
3179 gen->ymz = calloc(1, sizeof(*gen->ymz));
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
3180 //This divider is just a guess, PCB diagram in MAME shows no other crystal
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
3181 //Datasheet says the typical clock is 16.9344 MHz
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
3182 //Master clock / 3 is 17.897725 MHz which is reasonably close
2466
b5640ac9aea9 Initial stab at PCM/ADPCM support in YMZ263B emulation
Michael Pavone <pavone@retrodev.com>
parents: 2460
diff changeset
3183 ymz263b_init(gen->ymz, gen->master_clock, 3);
2460
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
3184 }
a4f8fa24764b Initial work on emulating the YMZ263B in the Copera
Michael Pavone <pavone@retrodev.com>
parents: 2459
diff changeset
3185
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3186 gen->work_ram = calloc(2, RAM_WORDS);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3187 if (!strcmp("random", tern_find_path_default(config, "system\0ram_init\0", (tern_val){.ptrval = "zero"}, TVAL_PTR).ptrval))
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3188 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3189 srand(time(NULL));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3190 for (int i = 0; i < RAM_WORDS; i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3191 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3192 gen->work_ram[i] = rand();
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3193 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3194 for (int i = 0; i < VRAM_SIZE; i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3195 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3196 gen->vdp->vdpmem[i] = rand();
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3197 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3198 for (int i = 0; i < SAT_CACHE_SIZE; i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3199 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3200 gen->vdp->sat_cache[i] = rand();
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3201 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3202 for (int i = 0; i < CRAM_SIZE; i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3203 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3204 write_cram_internal(gen->vdp, i, rand());
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3205 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3206 for (int i = 0; i < gen->vdp->vsram_size; i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3207 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3208 gen->vdp->vsram[i] = rand();
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3209 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3210 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3211 gen->cart = rom;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3212 gen->lock_on = lock_on;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3213 gen->header.has_keyboard = 0; //TODO: Keyboard Pico emulation
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3214 gen->mapper_type = info.mapper_type;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3215 gen->save_type = info.save_type;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3216 if (gen->save_type != SAVE_NONE) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3217 gen->save_ram_mask = info.save_mask;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3218 gen->save_size = info.save_size;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3219 gen->save_storage = info.save_buffer;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3220 gen->header.info.save_buffer = info.save_buffer = NULL;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3221 gen->eeprom_map = info.eeprom_map;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3222 gen->num_eeprom = info.num_eeprom;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3223 if (gen->save_type == SAVE_I2C) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3224 eeprom_init(&gen->eeprom, gen->save_storage, gen->save_size);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3225 } else if (gen->save_type == SAVE_NOR) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3226 memcpy(&gen->nor, info.nor, sizeof(gen->nor));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3227 //nor_flash_init(&gen->nor, gen->save_storage, gen->save_size, info.save_page_size, info.save_product_id, info.save_bus);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3228 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3229 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3230 gen->save_storage = NULL;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3231 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3232
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3233 gen->mapper_start_index = info.mapper_start_index;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3234 //This must happen before we generate memory access functions in init_m68k_opts
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3235 for (int i = 0; i < info.map_chunks; i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3236 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3237 if (info.map[i].start == 0xE00000) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3238 info.map[i].buffer = gen->work_ram;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3239 break;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3240 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3241 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3242
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3243 memmap_chunk* map = info.map;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3244 uint32_t map_chunks = info.map_chunks;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3245 info.map = gen->header.info.map = NULL;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3246
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3247 m68k_options *opts = malloc(sizeof(m68k_options));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3248 init_m68k_opts(opts, map, map_chunks, MCLKS_PER_68K, sync_components_pico, int_ack);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3249 //TODO: Pico model selection
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3250 //if (!strcmp(tern_find_ptr_default(model, "tas", "broken"), "broken")) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3251 opts->gen.flags |= M68K_OPT_BROKEN_READ_MODIFY;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3252 //}
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3253 gen->m68k = init_68k_context(opts, NULL);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3254 gen->m68k->system = gen;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3255 opts->address_log = (ym_opts & OPT_ADDRESS_LOG) ? fopen("address.log", "w") : NULL;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3256
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3257 //This must happen after the 68K context has been allocated
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3258 for (int i = 0; i < map_chunks; i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3259 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3260 if (map[i].flags & MMAP_PTR_IDX) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3261 gen->m68k->mem_pointers[map[i].ptr_index] = map[i].buffer;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3262 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3263 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3264
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3265 if (gen->mapper_type == MAPPER_SEGA) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3266 //initialize bank registers
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3267 for (int i = 1; i < sizeof(gen->bank_regs); i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3268 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3269 gen->bank_regs[i] = i;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3270 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3271 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3272 gen->reset_cycle = CYCLE_NEVER;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3273
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3274 set_audio_config(gen);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3275 bindings_set_mouse_mode(MOUSE_ABSOLUTE);
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3276 memset(gen->pico_story_pages, 0xFF, sizeof(gen->pico_story_pages));
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3277 #ifndef IS_LIB
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3278 gen->pico_story_window = render_create_window("Pico Storybook & Pad", 640, 640, NULL);
2438
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3279 char *manifest_name = alloc_concat(current_media()->name, ".manifest");
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3280 char *manifest_str = load_media_subfile(current_media(), manifest_name, NULL);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3281 tern_node *manifest = NULL;
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3282 if (manifest_str) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3283 manifest = parse_config(manifest_str);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3284 if (!manifest) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3285 printf("Failed to parse manifest %s\n", manifest_name);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3286 }
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3287 } else {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3288 printf("Manifest file %s not found\n", manifest_name);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3289 }
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3290
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3291 tern_node *pages = tern_find_node(manifest, "pages");
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3292 if (!pages && manifest) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3293 printf("No pages key in %s\n", manifest_name);
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3294 }
2438
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3295 char numkey[18];
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3296 for (int i = 0; i < 7; i++) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3297 uint8_t *img_data;
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3298 uint32_t img_size;
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3299 if (pages) {
2438
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3300 sprintf(numkey, "%d", i);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3301 char *page_path = tern_find_ptr(pages, numkey);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3302 if (page_path) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3303 printf("page %d: %s\n", i, page_path);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3304 } else {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3305 continue;
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3306 }
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3307 img_data = load_media_subfile(current_media(), page_path, &img_size);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3308 if (!img_data) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3309 printf("Failed to load image file for page %d from %s\n", i, page_path);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3310 continue;
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3311 }
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3312 } else {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3313 sprintf(numkey, "_%d.png", i);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3314 char *img_path = alloc_concat(current_media()->name, numkey);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3315 img_data = load_media_subfile(current_media(), img_path, &img_size);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3316 if (!img_data) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3317 sprintf(numkey, "_%d.PNG", i);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3318 char *img_path_loud = alloc_concat(current_media()->name, numkey);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3319 img_data = load_media_subfile(current_media(), img_path_loud, &img_size);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3320 if (!img_data) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3321 printf("Failed to load image file for page %d from %s or %s\n", i, img_path, img_path_loud);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3322 free(img_path);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3323 free(img_path_loud);
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3324 continue;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3325 }
2438
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3326 free(img_path_loud);
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3327 }
2438
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3328 free(img_path);
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3329 }
2438
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3330
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3331 gen->pico_story_pages[i] = render_static_image(gen->pico_story_window, img_data, img_size);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3332 if (gen->pico_story_pages[i] == 0xFF) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3333 printf("Failed to decode image for page %d\n", i);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3334 }
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3335 free(img_data);
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3336 }
2438
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3337
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3338 free(manifest_name);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3339 tern_free(manifest);
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3340 pico_update_page(gen);
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3341 #endif
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3342 return gen;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3343 }