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annotate genesis.c @ 2459:cb62730d5c99

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Initial work on Copera emulation
author Michael Pavone <pavone@retrodev.com>
date Wed, 21 Feb 2024 23:42:19 -0800
parents bed4d3db8a3f
children a4f8fa24764b
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.
22e87b739ad6 WIP split of 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
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
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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.
Michael Pavone <pavone@retrodev.com>
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.
Michael Pavone <pavone@retrodev.com>
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
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12 #include <time.h>
1220
1e7977460d18 Add mising include in genesis.c so the Windows build works again
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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.
Michael Pavone <pavone@retrodev.com>
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
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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.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
25 #define MCLKS_NTSC 53693175
22e87b739ad6 WIP split of 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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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;
22e87b739ad6 WIP split of 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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29 #define MCLKS_PER_YM 7
22e87b739ad6 WIP split of 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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30 #define MCLKS_PER_Z80 15
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parents:
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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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parents: 1288
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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.
Michael Pavone <pavone@retrodev.com>
parents:
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39
1688
395f684c5379 Fixed the most glaring issues in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1643
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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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parents: 1643
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42 #else
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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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
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
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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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parents: 2039
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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
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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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
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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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);
65c2e4d990cc WIP Pico emulation
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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
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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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
9ead0fe69d9b Implement savestate support for Sega CD
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89 save_int32(buf, gen->last_sync_cycle);
9ead0fe69d9b Implement savestate support for Sega CD
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90 save_int32(buf, gen->refresh_counter);
1946
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91 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
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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);
65c2e4d990cc WIP Pico emulation
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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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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);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
691 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
692 psg_run(gen->psg, target);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
693 pico_pcm_run(gen->adpcm, target);
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
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
696 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
697 {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
698 genesis_context *gen = context->system;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
699 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
700 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
701 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
702 context->int_cycle = CYCLE_NEVER;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
703 uint8_t mask = context->status & 0x7;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
704 if (mask < 6) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
705 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
706 if (next_vint != CYCLE_NEVER) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
707 context->int_cycle = next_vint;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
708 context->int_num = 6;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
709 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
710 if (mask < 5) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
711 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
712 if (next_hint != CYCLE_NEVER) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
713 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
714 if (next_hint < context->int_cycle) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
715 context->int_cycle = next_hint;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
716 context->int_num = 5;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
717
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
718 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
719 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
720 if (mask < 3) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
721 uint32_t next_pcm_int = pico_pcm_next_int(gen->adpcm);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
722 if (next_pcm_int != CYCLE_NEVER && next_pcm_int < context->int_cycle) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
723 context->int_cycle = next_pcm_int;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
724 context->int_num = 3;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
725 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
726 if (mask < 2 && (v_context->regs[REG_MODE_3] & BIT_EINT_EN) && gen->header.type == SYSTEM_GENESIS) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
727 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
728 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
729 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
730 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
731 ? (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
732 : (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
733 if (next_eint != CYCLE_NEVER) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
734 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
735 if (next_eint < context->int_cycle) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
736 context->int_cycle = next_eint;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
737 context->int_num = 2;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
738 }
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 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
742 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
743 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
744 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
745 context->int_pending = INT_PENDING_NONE;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
746 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
747 /*if (context->int_cycle != old_int_cycle) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
748 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
749 old_int_cycle = context->int_cycle;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
750 }*/
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
751
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
752 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
753 context->target_cycle = context->current_cycle;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
754 return;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
755 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
756
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
757 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
758 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
759 context->target_cycle = context->current_cycle;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
760 } else if (context->target_cycle < context->current_cycle) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
761 //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
762 //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
763 context->target_cycle = context->current_cycle;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
764 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
765 if (context->target_cycle == context->int_cycle) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
766 //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
767 //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
768 //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
769 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
770 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
771 } 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
772 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
773 } else {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
774 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
775 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
776
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
777 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
778 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
779
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
780 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
781 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
782 genesis_context * gen = context->system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
783 vdp_context * v_context = gen->vdp;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
784 if (gen->bus_busy) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
785 gen_update_refresh_no_wait(context);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
786 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
787 gen_update_refresh(context);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
788 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
789
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
790 uint32_t mclks = context->current_cycle;
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
791 sync_sound_pico(gen, mclks);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
792 vdp_run_context(v_context, mclks);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
793 if (mclks >= gen->reset_cycle) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
794 gen->reset_requested = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
795 context->should_return = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
796 gen->reset_cycle = CYCLE_NEVER;
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 if (v_context->frame != gen->last_frame) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
799 #ifndef IS_LIB
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
800 if (gen->psg->scope) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
801 scope_render(gen->psg->scope);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
802 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
803 #endif
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
804 //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
805 uint32_t elapsed = v_context->frame - gen->last_frame;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
806 gen->last_frame = v_context->frame;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
807 event_flush(mclks);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
808 gen->last_flush_cycle = mclks;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
809 if (gen->header.enter_debugger_frames) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
810 if (elapsed >= gen->header.enter_debugger_frames) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
811 gen->header.enter_debugger_frames = 0;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
812 gen->header.enter_debugger = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
813 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
814 gen->header.enter_debugger_frames -= elapsed;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
815 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
816 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
817
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
818 if(exit_after){
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
819 if (elapsed >= exit_after) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
820 exit(0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
821 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
822 exit_after -= elapsed;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
823 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
824 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
825 if (context->current_cycle > MAX_NO_ADJUST) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
826 uint32_t deduction = mclks - ADJUST_BUFFER;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
827 vdp_adjust_cycles(v_context, deduction);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
828 if (gen->mapper_type == MAPPER_JCART) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
829 jcart_adjust_cycles(gen, deduction);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
830 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
831 context->current_cycle -= deduction;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
832 if (gen->psg->vgm) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
833 vgm_adjust_cycles(gen->psg->vgm, deduction);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
834 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
835 gen->psg->cycles -= deduction;
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
836 gen->adpcm->cycle -= deduction;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
837 if (gen->reset_cycle != CYCLE_NEVER) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
838 gen->reset_cycle -= deduction;
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 event_cycle_adjust(mclks, deduction);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
841 if (gen->expansion) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
842 scd_adjust_cycle(gen->expansion, deduction);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
843 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
844 gen->last_flush_cycle -= deduction;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
845 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
846 } else if (mclks - gen->last_flush_cycle > gen->soft_flush_cycles) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
847 event_soft_flush(mclks);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
848 gen->last_flush_cycle = mclks;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
849 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
850 gen->frame_end = vdp_cycles_to_frame_end(v_context);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
851 context->sync_cycle = gen->frame_end;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
852 //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
853 if (!address && (gen->header.enter_debugger || gen->header.save_state)) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
854 context->sync_cycle = context->current_cycle + 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
855 }
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
856 adjust_int_cycle_pico(context, v_context);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
857 if (gen->reset_cycle < context->target_cycle) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
858 context->target_cycle = gen->reset_cycle;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
859 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
860 if (address) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
861 if (gen->header.enter_debugger || context->wp_hit) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
862 if (!context->wp_hit) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
863 gen->header.enter_debugger = 0;
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 #ifndef IS_LIB
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
866 if (gen->header.debugger_type == DEBUGGER_NATIVE) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
867 debugger(context, address);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
868 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
869 gdb_debug_enter(context, address);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
870 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
871 #endif
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
872 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
873 if (gen->header.save_state) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
874 uint8_t slot = gen->header.save_state - 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
875 gen->header.save_state = 0;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
876 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
877 if (use_native_states || slot >= SERIALIZE_SLOT) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
878 serialize_buffer state;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
879 init_serialize(&state);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
880 genesis_serialize(gen, &state, address, slot != EVENTLOG_SLOT);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
881 if (slot == SERIALIZE_SLOT) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
882 gen->serialize_tmp = state.data;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
883 gen->serialize_size = state.size;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
884 context->sync_cycle = context->current_cycle;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
885 context->should_return = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
886 } else if (slot == EVENTLOG_SLOT) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
887 event_state(context->current_cycle, &state);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
888 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
889 save_to_file(&state, save_path);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
890 free(state.data);
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 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
893 save_gst(gen, save_path, address);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
894 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
895 if (slot != SERIALIZE_SLOT) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
896 debug_message("Saved state to %s\n", save_path);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
897 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
898 free(save_path);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
899 } else if(gen->header.save_state) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
900 context->sync_cycle = context->current_cycle + 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
901 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
902 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
903 return context;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
904 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
905
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
906 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
907 {
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
908 genesis_context * gen = context->system;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
909 if ((gen->header.type != SYSTEM_PICO && gen->header.type != SYSTEM_COPERA) || context->int_num > 4 || context->int_num < 3) {
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
910 vdp_context * v_context = gen->vdp;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
911 //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
912 vdp_run_context(v_context, context->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
913 vdp_int_ack(v_context);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
914 }
2354
a773b8f09292 Remove old refresh hack that is causing VDPFifoTesting to have a failed test
Michael Pavone <pavone@retrodev.com>
parents: 2350
diff changeset
915
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
916 //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
917 //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
918 //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
919 //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
920 //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
921 //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
922 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
923 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
924
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
925 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
926 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
927
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
928 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
929 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
930 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
931 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
932 }
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
933 genesis_context * gen = context->system;
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
934 if (!gen->vdp_unlocked) {
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
935 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
936 }
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
937 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
938 //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
939
1372
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
940 //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
941 gen_update_refresh_free_access(context);
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
942
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
943 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
944 sync_components_pico(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
945 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
946 sync_components(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
947 }
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 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
949 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
950 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
951 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
952 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
953 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
954 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
955 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
956 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
957 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
958 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
959 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
960 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
961 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
962 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
963 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
964 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
965 gen->bus_busy = 1;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
966 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
967 sync_components_pico(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
968 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
969 sync_components(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
970 }
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
971 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
972 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 //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
975 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 } 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
977 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
978 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
979 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
980 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
981 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
982 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
983 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
984 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
985 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
986 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
987 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
988 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
989 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
990 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
992 gen->bus_busy = 1;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
993 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
994 sync_components_pico(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
995 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
996 sync_components(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
997 }
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
998 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
999 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 }
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
1001
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
1002 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
1003 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
1004 } 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
1005 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
1006 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 } 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
1009 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
1010 //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
1011 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
1012 adjust_int_cycle_pico(context, v_context);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1013 } else {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1014 adjust_int_cycle(context, v_context);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1015 }
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
1016 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 } 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
1018 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
1019 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1020 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
1021 //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
1022 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
1023 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
1024 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
1025 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
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 context->current_cycle += m68k_cycle_diff;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1028 if (gen->header.type == SYSTEM_GENESIS) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1029 //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
1030 gen->bus_busy = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1031 sync_z80(gen, v_context->cycles);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1032 gen->bus_busy = 0;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1033 }
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
1034 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 } 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
1036 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
1037 } 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
1038 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
1039 }
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1040
2391
664c3e749428 Restore reset of refresh counter after DMA since its removal caused some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2384
diff changeset
1041 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
1042 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
1043 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
1044 } else {
664c3e749428 Restore reset of refresh counter after DMA since its removal caused some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2384
diff changeset
1045 //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
1046 //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
1047 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
1048 }
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
1049 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
1050 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1051
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1052 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
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 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
1055 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1057 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
1058 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1059 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
1060 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
1061 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
1062 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
1063 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
1064 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1065 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
1066 //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
1067 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
1068 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
1069 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
1070 } 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
1071 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
1072 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
1073 } 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
1074 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
1075 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1076 } 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
1077 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
1078 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
1079 } else {
2327
9dd27530c570 Fix Z80 access to VDP debug register
Michael Pavone <pavone@retrodev.com>
parents: 2302
diff changeset
1080 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
1081 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
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
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1085 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
1086 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1087 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
1088 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
1089 }
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1090 genesis_context *gen = context->system;
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1091 if (!gen->vdp_unlocked) {
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1092 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
1093 }
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
1094 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
1095 uint16_t value;
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1096
1372
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
1097 //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
1098 gen_update_refresh_free_access(context);
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1099
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1100 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
1101 sync_components_pico(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1102 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1103 sync_components(context, 0);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1104 }
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 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
1106 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
1107 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
1108 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
1109 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
1110 } 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
1111 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
1112 } 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
1113 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
1114 //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
1115 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1116 } 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
1117 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
1118 } else {
1869
dc94354eab66 Fix accuracy bugs used by Novedicus to detect BlastEm/Exodus
Michael Pavone <pavone@retrodev.com>
parents: 1849
diff changeset
1119 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
1120 }
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
1121 if (context->current_cycle != before_cycle) {
2021
270a4c875e0a Backed out changeset 96971b673f51
Michael Pavone <pavone@retrodev.com>
parents: 2012
diff changeset
1122 //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
1123 //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
1124 genesis_context *gen = context->system;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1125 if (gen->header.type == SYSTEM_GENESIS) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1126 gen->bus_busy = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1127 sync_z80(gen, context->current_cycle);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1128 gen->bus_busy = 0;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1129 }
2021
270a4c875e0a Backed out changeset 96971b673f51
Michael Pavone <pavone@retrodev.com>
parents: 2012
diff changeset
1130 }
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1131
1372
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
1132 //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
1133 //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
1134 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
1135 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
1136 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1138 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
1139 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1140 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
1141 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
1142 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
1143 } 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
1144 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
1145 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1146 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1147
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1148 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
1149 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1150 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
1151 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
1152 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
1153 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1155 //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
1156 //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
1157 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
1158 //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
1159 //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
1160 // 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
1161 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
1162
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1165 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
1166 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
1167 //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
1168 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
1169 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
1170 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
1171 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
1172 } 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
1173 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
1174 } 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
1175 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
1176 }
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
1177 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
1178 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
1179 }
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
1180 } 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
1181 //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
1182 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
1183 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1185 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1187 //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
1188 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
1189
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1190 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
1191 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 genesis_context * gen = context->system;
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1193
2012
b05295c2ad04 Small improvement to refresh cycle approximation
Mike Pavone <pavone@retrodev.com>
parents: 1998
diff changeset
1194 //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
1195 gen_update_refresh_free_access(context);
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1196
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
1197 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
1198 //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
1199 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
1200 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
1201 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
1202 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
1203 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
1204 #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
1205 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
1206 #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
1207 } 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
1208 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
1209 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
1210 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
1211 } 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
1212 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
1213 } 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
1214 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
1215 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 } 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
1217 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
1218 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
1219 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
1220 } 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
1221 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
1222 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 } 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
1224 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
1225 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 } 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
1228 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
1229 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
1230 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1232 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
1233 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
1234 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
1235 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
1236 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
1237 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
1238 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
1239 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
1240 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
1241 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
1242 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
1243 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
1244 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
1245 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
1246 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
1247 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
1248 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
1249 case 0x7:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1250 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
1251 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
1252 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
1253 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
1254 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
1255 //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
1256 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
1257 case 0x9:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1258 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
1259 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
1260 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
1261 case 0xA:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1262 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
1263 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
1264 case 0xC:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1265 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
1266 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
1267 case 0xD:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1268 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
1269 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
1270 case 0xF:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1271 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
1272 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
1273 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1274 } 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
1275 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
1276 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
1277 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
1278 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
1279 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
1280 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
1281 } 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
1282 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
1283 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1284 } 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
1285 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
1286 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
1287 #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
1288 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
1289 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
1290 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
1291 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
1292 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
1293 #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
1294 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1295 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
1296 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
1297 } 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
1298 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
1299 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 }
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
1301 } else if (masked == 0x11200) {
2184
408fb8a7e990 Implement argumentless variant of z80 debugger command
Michael Pavone <pavone@retrodev.com>
parents: 2179
diff changeset
1302 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
1303 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
1304 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
1305 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
1306 } 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
1307 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
1308 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 } 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
1310 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
1311 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
1312 } 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
1313 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
1314 }
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
1315 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
1316 }
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
1317 } 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
1318 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
1319 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1320 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1321 }
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1322
2012
b05295c2ad04 Small improvement to refresh cycle approximation
Mike Pavone <pavone@retrodev.com>
parents: 1998
diff changeset
1323 //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
1324 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
1325 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
1326 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1328 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
1329 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1331 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
1332 } 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
1333 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
1334 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1336
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1337 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
1338 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1339 printf("Pico IO write.b %X - %X\n", location, value);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1340 return vcontext;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1341 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1342
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1343 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
1344 {
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1345 uint32_t port = location & 0xFE;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1346 m68k_context *context = vcontext;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1347 genesis_context *gen = context->system;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1348 if (port == 0x10) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1349 sync_sound_pico(gen, context->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1350 pico_pcm_data_write(gen->adpcm, value);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1351 printf("PICO ADPCM Data: %04X\n", value);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1352 if (context->int_num == 3) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1353 adjust_int_cycle_pico(context, gen->vdp);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1354 }
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1355 } else if (port == 0x12) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1356 sync_sound_pico(gen, context->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1357 printf("PICO ADPCM Control: %04X\n", value);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1358 pico_pcm_ctrl_write(gen->adpcm, value);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1359 adjust_int_cycle_pico(context, gen->vdp);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1360 } else {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1361 return pico_io_write(location, vcontext, value);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1362 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1363 return vcontext;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1364 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1365
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
1366 #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
1367 #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
1368 #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
1369 #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
1370 #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
1371 #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
1372
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1373 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
1374 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1375 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
1376 genesis_context *gen = context->system;
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1377
2012
b05295c2ad04 Small improvement to refresh cycle approximation
Mike Pavone <pavone@retrodev.com>
parents: 1998
diff changeset
1378 //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
1379 gen_update_refresh_free_access(context);
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1380
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
1381 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
1382 //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
1383 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
1384 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
1385 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
1386 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
1387 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
1388 } 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
1389 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
1390 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
1391 } 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
1392 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
1393 } 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
1394 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
1395 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
1396 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1397 } 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
1398 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
1399 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
1400 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 } 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
1402 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
1403 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
1404 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1406 //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
1407 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
1408 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
1409 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
1410 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
1411 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
1412 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
1413 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
1414 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
1415 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
1416 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
1417 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
1418 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
1419 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
1420 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
1421 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
1422 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
1423 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
1424 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
1425 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
1426 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
1427 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
1428 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
1429 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
1430 case 0x8:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1431 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
1432 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
1433 case 0x9:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1434 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
1435 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
1436 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
1437 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
1438 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
1439 case 0xB:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1440 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
1441 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
1442 case 0xC:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1443 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
1444 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
1445 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
1446 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
1447 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
1448 case 0xE:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1449 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
1450 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
1451 case 0xF:
2025
e7a516f08cec Implement serial IO, a generic serial device type and external interrupts
Michael Pavone <pavone@retrodev.com>
parents: 2021
diff changeset
1452 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
1453 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
1454 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
1455 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
1456 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1457 } 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
1458 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
1459 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
1460 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
1461 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
1462 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
1463 } 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
1464 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
1465 } 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
1466 //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
1467 //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
1468 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
1469 } 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
1470 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
1471 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
1472 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
1473 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1474 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 }
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1476
2012
b05295c2ad04 Small improvement to refresh cycle approximation
Mike Pavone <pavone@retrodev.com>
parents: 1998
diff changeset
1477 //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
1478 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
1479 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
1480 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1482 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
1483 {
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
1484 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
1485 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
1486 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
1487 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
1488 } 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
1489 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
1490 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
1491 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
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
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1495 static uint8_t pico_io_read(uint32_t location, void *vcontext)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1496 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1497 m68k_context *m68k = vcontext;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1498 genesis_context *gen = m68k->system;
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1499 uint16_t tmp;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1500 switch(location >> 1 & 0x7F)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1501 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1502 case 0:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1503 return gen->version_reg;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1504 case 1:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1505 return gen->pico_button_state;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1506 case 2:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1507 return gen->pico_pen_x >> 8;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1508 case 3:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1509 return gen->pico_pen_x;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1510 case 4:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1511 return gen->pico_pen_y >> 8;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1512 case 5:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1513 return gen->pico_pen_y;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1514 case 6:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1515 return gen->pico_page;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1516 case 7:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1517 //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
1518 if (gen->header.type == SYSTEM_PICO) {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1519 return 1;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1520 } else {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1521 return 0;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1522 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1523 case 8:
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
1524 //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
1525 sync_sound_pico(gen, m68k->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1526 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
1527 return (location & 1) ? tmp : tmp >> 8;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1528 case 9:
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
1529 //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
1530 sync_sound_pico(gen, m68k->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1531 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
1532 return (location & 1) ? tmp : tmp >> 8;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1533 return 0;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1534 default:
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1535 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
1536 return 0xFF;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1537 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1538 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1539
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1540 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
1541 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1542 m68k_context *m68k = vcontext;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1543 genesis_context *gen = m68k->system;
2431
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1544 uint32_t port = location & 0xFE;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1545 if (port == 0x10) {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1546 sync_sound_pico(gen, m68k->current_cycle);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1547 return pico_pcm_data_read(gen->adpcm);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1548 } else if (port == 0x12) {
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 return pico_pcm_ctrl_read(gen->adpcm);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1551 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1552 uint16_t value = pico_io_read(location, vcontext);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1553 return value | (value << 8);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1554 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1555
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1556 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
1557 {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1558 printf("Unhandled Copera 16-bit read %X\n", location);
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1559 return 0xFFFF;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1560 }
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1561
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1562 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
1563 {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1564 printf("Unhandled Copera 8-bit read %X\n", location);
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1565 return 0xFF;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1566 }
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1567
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1568 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
1569 {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1570 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
1571 return vcontext;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1572 }
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1573
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1574 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
1575 {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1576 switch (location & 0xFF)
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1577 {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1578 case 1:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1579 case 5:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1580 printf("Copera YMZ263 Address write - %X: %X\n", location, value);
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1581 break;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1582 case 3:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1583 case 7:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1584 printf("Copera YMZ263 Channel #%d Data write - %X: %X\n", ((location & 4) >> 2) + 1, location, value);
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1585 break;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1586 case 0x24:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1587 case 0x34:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1588 printf("Copera YMF263 Address Part #%d write - %X: %X\n", ((location >> 4) & 1) + 1, location, value);
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1589 break;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1590 case 0x28:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1591 printf("Copera YMF263 Data write - %X: %X\n", location, value);
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1592 break;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1593 case 0x40:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1594 //Bit 4 = SCI
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1595 //Bit 5 = DIN
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1596 //Bit 6 = A0
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1597 //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
1598 printf("Copera YM7128B Write - %X: %X\n", location, value);
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1599 break;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1600 default:
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1601 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
1602 }
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1603 return vcontext;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1604 }
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1605
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1606 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
1607 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1608 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
1609 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
1610 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
1611 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
1612 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
1613 } 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
1614 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
1615 } 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
1616 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
1617 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1618 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
1619 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1620
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1621 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
1622 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1623 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
1624 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
1625 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
1626 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
1627 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1628
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1629 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
1630 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1631 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
1632 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
1633 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
1634 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
1635 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1636 //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
1637 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
1638 //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
1639 //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
1640 // 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
1641 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
1642
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1643 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
1644 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
1645 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
1646 }
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
1647 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
1648 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
1649 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
1650 } 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
1651 //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
1652 //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
1653 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
1654 } 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
1655 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
1656 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1658 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1660 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
1661 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1663 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
1664 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
1665 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
1666 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1667 //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
1668 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
1669 //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
1670 //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
1671 // 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
1672 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
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 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
1675 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
1676 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
1677 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
1678 ((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
1679 } 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
1680 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
1681 } 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
1682 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
1683 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1685 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1687 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
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 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
1690 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
1691
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
1692 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
1693 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
1694
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1696 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1697
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
1698 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
1699 {
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
1700 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
1701 genesis_context *gen = context->system;
2228
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1702 if (location >= 0x800000) {
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1703 //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
1704 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
1705 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
1706 gen->refresh_counter += 4*MCLKS_PER_68K;
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1707 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
1708 gen->last_sync_cycle = context->current_cycle;
2228
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1709 }
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1710
1987
71732f2f6f42 Fix handling of unmapped reads/writes to the cart/expansion port region
Mike Pavone <pavone@retrodev.com>
parents: 1980
diff changeset
1711 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
1712 //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
1713 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
1714 } 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
1715 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
1716 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
1717 } 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
1718 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
1719 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
1720 }
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
1721 } 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
1722 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
1723 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
1724 } 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
1725 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
1726 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
1727 }
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
1728 } 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
1729 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
1730 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
1731 }
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
1732 }
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
1733
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
1734 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
1735 {
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
1736 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
1737 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
1738 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
1739 } 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
1740 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
1741 }
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
1742 }
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
1743
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1744 static void check_tmss_lock(genesis_context *gen)
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1745 {
2039
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1746 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
1747 }
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1748
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1749 static void toggle_tmss_rom(genesis_context *gen)
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1750 {
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1751 m68k_context *context = gen->m68k;
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1752 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
1753 {
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1754 uint16_t *tmp = context->mem_pointers[i];
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1755 context->mem_pointers[i] = gen->tmss_pointers[i];
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1756 gen->tmss_pointers[i] = tmp;
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1757 }
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1758 m68k_invalidate_code_range(context, 0, 0x400000);
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1759 }
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1760
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
1761 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
1762 {
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 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
1764 genesis_context *gen = context->system;
2228
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1765 if (location >= 0x800000) {
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1766 //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
1767 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
1768 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
1769 gen->refresh_counter += 4*MCLKS_PER_68K;
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1770 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
1771 gen->last_sync_cycle = context->current_cycle;
2228
0db9dc6a9020 Some minor refresh emulation improvements
Michael Pavone <pavone@retrodev.com>
parents: 2227
diff changeset
1772 }
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1773
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
1774 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
1775 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
1776 gen->tmss_lock[location >> 1 & 1] = value;
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1777 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
1778 } else if (has_tmss && location == 0xA14100) {
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1779 value &= 1;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1780 if (gen->tmss != value) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1781 gen->tmss = value;
2039
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1782 toggle_tmss_rom(gen);
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1783 }
1987
71732f2f6f42 Fix handling of unmapped reads/writes to the cart/expansion port region
Mike Pavone <pavone@retrodev.com>
parents: 1980
diff changeset
1784 } 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
1785 //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
1786 } 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
1787 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
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 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
1790 }
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
1791
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
1792 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
1793 {
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
1794 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
1795 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
1796 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
1797 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
1798 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
1799 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
1800 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
1801 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
1802 } 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
1803 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
1804 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
1805 }
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
1806 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
1807 } 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
1808 if (location & 1) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1809 value &= 1;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1810 if (gen->tmss != value) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1811 gen->tmss = value;
2039
3b8e29ef1145 Add TMSS state to save states
Michael Pavone <pavone@retrodev.com>
parents: 2037
diff changeset
1812 toggle_tmss_rom(gen);
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1813 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
1814 }
1987
71732f2f6f42 Fix handling of unmapped reads/writes to the cart/expansion port region
Mike Pavone <pavone@retrodev.com>
parents: 1980
diff changeset
1815 } 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
1816 //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
1817 } 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
1818 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
1819 }
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 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
1821 }
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
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
1823 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
1824 {
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
1825 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
1826 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
1827 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
1828 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
1829 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
1830 }
2278
5a21bc0ec583 Implement turbo/slo mo for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2277
diff changeset
1831 if (context->expansion) {
5a21bc0ec583 Implement turbo/slo mo for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2277
diff changeset
1832 segacd_context *cd = context->expansion;
5a21bc0ec583 Implement turbo/slo mo for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2277
diff changeset
1833 segacd_set_speed_percent(cd, percent);
5a21bc0ec583 Implement turbo/slo mo for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2277
diff changeset
1834 }
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
1835 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
1836 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
1837 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1838
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1839 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
1840 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1841 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
1842 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
1843 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
1844 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
1845 } 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
1846 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
1847 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1848 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1849 uint8_t is_50hz = 0;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1850 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
1851 if (region & REGION_E) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1852 is_50hz = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1853 gen->version_reg = 0x20;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1854 } else if (region & REGION_J) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1855 gen->version_reg = 0;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1856 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1857 gen->version_reg = 0x40;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1858 }
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
1859 } else {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1860 if (region & REGION_E) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1861 gen->version_reg = NO_DISK | EUR;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1862 is_50hz = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1863 } else if (region & REGION_J) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1864 gen->version_reg = NO_DISK | JAP;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1865 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1866 gen->version_reg = NO_DISK | USA;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1867 }
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
1868 }
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
1869
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1870 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
1871 gen->normal_clock = MCLKS_PAL;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1872 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
1873 } 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
1874 gen->normal_clock = MCLKS_NTSC;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1875 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
1876 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1877 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
1878 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1879
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1880 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
1881 {
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1882 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
1883 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
1884 deserialize_buffer state;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1885 uint32_t pc = 0;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1886 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
1887 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
1888 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
1889 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
1890 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
1891 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
1892 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
1893 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
1894 }
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1895 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
1896 }
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1897 if (load_from_file(&state, statepath)) {
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1898 genesis_deserialize(&state, gen);
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1899 free(state.data);
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1900 ret = 1;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1901 } else {
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1902 strcpy(statepath + strlen(statepath)-strlen("state"), "gst");
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1903 pc = load_gst(gen, statepath);
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1904 ret = pc != 0;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1905 }
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1906 if (ret) {
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2278
diff changeset
1907 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
1908 }
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1909 done:
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1910 free(statepath);
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1911 return ret;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1912 }
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1913
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1914 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
1915 {
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1916 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
1917 {
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1918 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
1919 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
1920 gen->m68k->should_return = 0;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1921 if (gen->header.type == SYSTEM_GENESIS) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1922 z80_assert_reset(gen->z80, gen->m68k->current_cycle);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1923 z80_clear_busreq(gen->z80, gen->m68k->current_cycle);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1924 }
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1925 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
1926 ym_reset(gen->ym);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1927 }
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1928 //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
1929 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
1930 }
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1931 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
1932 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
1933 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
1934 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
1935 }
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1936 }
1980
81df9aa2de9b Less hacky run on audio thread mode
Michael Pavone <pavone@retrodev.com>
parents: 1971
diff changeset
1937 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
1938 bindings_release_capture();
b387f1c5a1d0 WIP new sync mode that runs emulation on audio thread
Michael Pavone <pavone@retrodev.com>
parents: 1927
diff changeset
1939 vdp_release_framebuffer(gen->vdp);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1940 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
1941 render_pause_source(gen->ym->audio);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
1942 }
1932
b387f1c5a1d0 WIP new sync mode that runs emulation on audio thread
Michael Pavone <pavone@retrodev.com>
parents: 1927
diff changeset
1943 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
1944 }
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1945 }
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1946
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
1947 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
1948 {
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
1949 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
1950 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
1951 //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
1952 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
1953 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
1954 if (load_from_file(&state, statefile)) {
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
1955 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
1956 free(state.data);
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
1957 //HACK
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
1958 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
1959 } 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
1960 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
1961 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
1962 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
1963 }
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
1964 }
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
1965 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
1966 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
1967 gen->header.enter_debugger = 0;
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
1968 #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
1969 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
1970 #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
1971 }
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1972 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
1973 adjust_int_cycle_pico(gen->m68k, gen->vdp);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1974 } else {
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1975 adjust_int_cycle(gen->m68k, gen->vdp);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
1976 }
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
1977 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
1978 } 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
1979 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
1980 gen->header.enter_debugger = 0;
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
1981 #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
1982 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
1983 | 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
1984 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
1985 #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
1986 }
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
1987 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
1988 }
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
1989 handle_reset_requests(gen);
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
1990 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
1991 }
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
1992
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 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
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;
1980
81df9aa2de9b Less hacky run on audio thread mode
Michael Pavone <pavone@retrodev.com>
parents: 1971
diff changeset
1996 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
1997 gen->header.force_release = 0;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
1998 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
1999 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
2000 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2001 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
2002 }
1932
b387f1c5a1d0 WIP new sync mode that runs emulation on audio thread
Michael Pavone <pavone@retrodev.com>
parents: 1927
diff changeset
2003 bindings_reacquire_capture();
b387f1c5a1d0 WIP new sync mode that runs emulation on audio thread
Michael Pavone <pavone@retrodev.com>
parents: 1927
diff changeset
2004 vdp_reacquire_framebuffer(gen->vdp);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2005 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
2006 render_resume_source(gen->ym->audio);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2007 }
1932
b387f1c5a1d0 WIP new sync mode that runs emulation on audio thread
Michael Pavone <pavone@retrodev.com>
parents: 1927
diff changeset
2008 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
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 resume_68k(gen->m68k);
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2011 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
2012 }
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
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
2014 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
2015 {
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
2016 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
2017 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
2018 }
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
2019
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
2020 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
2021 {
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
2022 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
2023 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
2024 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
2025 }
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
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
2027 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
2028 {
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
2029 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
2030 FILE *f;
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2031 if (gen->expansion) {
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2032 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
2033 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
2034 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
2035 if (f) {
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2036 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
2037 fclose(f);
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2038 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
2039 }
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2040 free(bram_name);
2281
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2041 if (cd->bram_cart_id < 8) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2042 bram_name = path_append(system->save_dir, "cart.bram");
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2043 f = fopen(bram_name, "wb");
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2044 if (f) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2045 long configured_size = 0x2000 << cd->bram_cart_id;
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2046 fwrite(cd->bram_cart, 1, configured_size, f);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2047 fclose(f);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2048 printf("Saved BRAM cart to %s\n", bram_name);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2049 }
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2050 free(bram_name);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2051 }
2083
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2052 }
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
2053 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
2054 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
2055 }
2083
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2056 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
2057 if (!f) {
1395
efa7225e0f07 Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents: 1377
diff changeset
2058 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
2059 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
2060 }
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
2061 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
2062 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
2063 }
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 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
2065 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
2066 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
2067 }
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
2068 fclose(f);
1395
efa7225e0f07 Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents: 1377
diff changeset
2069 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
2070 }
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 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
2073 {
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 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
2075 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
2076 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
2077 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
2078 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
2079 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
2080 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
2081 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
2082 }
1395
efa7225e0f07 Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents: 1377
diff changeset
2083 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
2084 }
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
2085 }
2083
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2086 if (gen->expansion) {
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2087 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
2088 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
2089 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
2090 if (f) {
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2091 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
2092 fclose(f);
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2093 if (read > 0) {
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2094 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
2095 }
2335
c05b7c5e6f11 Automatically format Sega CD backup RAM
Michael Pavone <pavone@retrodev.com>
parents: 2327
diff changeset
2096 } else {
c05b7c5e6f11 Automatically format Sega CD backup RAM
Michael Pavone <pavone@retrodev.com>
parents: 2327
diff changeset
2097 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
2098 }
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2099 free(bram_name);
2281
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2100 bram_name = path_append(system->save_dir, "cart.bram");
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2101 f = fopen(bram_name, "rb");
2335
c05b7c5e6f11 Automatically format Sega CD backup RAM
Michael Pavone <pavone@retrodev.com>
parents: 2327
diff changeset
2102 long configured_size = 0x2000 << cd->bram_cart_id;
2281
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2103 if (f) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2104 long existing_size = nearest_pow2(file_size(f));
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2105 if (existing_size > 1 * 1024 * 1024) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2106 existing_size = 1 * 1024 * 1024;
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2107 }
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2108 if (existing_size != configured_size) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2109 if (existing_size > configured_size) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2110 free(cd->bram_cart);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2111 cd->bram_cart = calloc(existing_size, 1);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2112 }
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2113 cd->bram_cart_id = 0;
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2114 while (existing_size > (0x2000 <<cd->bram_cart_id)) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2115 cd->bram_cart_id++;
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2116 }
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2117 }
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2118 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
2119 fclose(f);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2120 if (read > 0) {
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2121 printf("Loaded BRAM cart from %s\n", bram_name);
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2122 }
2335
c05b7c5e6f11 Automatically format Sega CD backup RAM
Michael Pavone <pavone@retrodev.com>
parents: 2327
diff changeset
2123 } else {
c05b7c5e6f11 Automatically format Sega CD backup RAM
Michael Pavone <pavone@retrodev.com>
parents: 2327
diff changeset
2124 segacd_format_bram(cd->bram_cart, configured_size);
2281
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2125 }
b9fed07f19e4 Implement BRAM cart support
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
2126 free(bram_name);
2083
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
2127 }
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
2128 }
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
2129
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2130 static void soft_reset(system_header *system)
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2131 {
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2132 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
2133 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
2134 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
2135 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
2136 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
2137 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
2138 }
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
2139 }
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2140 }
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2141
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
2142 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
2143 {
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
2144 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
2145 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
2146 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
2147 }
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
2148 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
2149 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
2150 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
2151 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
2152 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
2153 free(gen->work_ram);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2154 if (gen->header.type == SYSTEM_GENESIS) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2155 z80_options_free(gen->z80->Z80_OPTS);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2156 free(gen->z80);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2157 free(gen->zram);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2158 }
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2159 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
2160 pico_pcm_free(gen->adpcm);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2161 free(gen->adpcm);
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2162 } else {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2163 ym_free(gen->ym);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2164 }
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
2165 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
2166 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
2167 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
2168 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
2169 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
2170 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
2171 }
2248
f7e2e11f1214 Fix improper free of memory map array from rom_info
Michael Pavone <pavone@retrodev.com>
parents: 2243
diff changeset
2172 free(map);
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
2173 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
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
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2176 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
2177 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2178 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
2179 io_gamepad_down(&gen->io, gamepad_num, button);
1610
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
2180 if (gen->mapper_type == MAPPER_JCART) {
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
2181 jcart_gamepad_down(gen, gamepad_num, button);
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
2182 }
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2183 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2184
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2185 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
2186 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2187 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
2188 io_gamepad_up(&gen->io, gamepad_num, button);
1610
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
2189 if (gen->mapper_type == MAPPER_JCART) {
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
2190 jcart_gamepad_up(gen, gamepad_num, button);
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
2191 }
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2192 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2193
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2194 static void pico_update_page(genesis_context *gen)
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2195 {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2196 #ifndef IS_LIB
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2197 uint8_t page_num = 0;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2198 uint8_t page = gen->pico_page;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2199 while (page)
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2200 {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2201 page_num++;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2202 page >>= 1;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2203 }
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2204 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
2205 int x, width;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2206 if (page_num) {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2207 x = 0;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2208 width = 640;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2209 } else {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2210 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
2211 x = 320;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2212 width = 320;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2213 }
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2214 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
2215 //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
2216 //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
2217 page_num--;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2218 }
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2219 if (gen->pico_story_pages[page_num] != 0xFF) {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2220 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
2221 } else {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2222 uint8_t grey = page * (255 / 5);
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2223 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
2224 }
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2225 render_window_refresh(gen->pico_story_window);
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2226 #endif
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2227 }
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2228
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2229 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
2230 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2231 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2232 if (gamepad_num != 1) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2233 return;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2234 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2235 //TODO: storyware display
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2236 if (button == BUTTON_C) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2237 gen->pico_page <<= 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2238 gen->pico_page |= 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2239 gen->pico_page &= 0x3F;
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2240 pico_update_page(gen);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2241 } else if (button == BUTTON_Z) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2242 gen->pico_page >>= 1;
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2243 pico_update_page(gen);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2244 } else if (button < BUTTON_B) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2245 gen->pico_button_state &= ~(1 << (button - 1));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2246 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2247 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2248
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2249 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
2250 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2251 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2252 if (gamepad_num != 1) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2253 return;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2254 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2255 if (button < BUTTON_B) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2256 gen->pico_button_state |= 1 << (button - 1);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2257 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2258 return;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2259 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2260
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2261 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
2262 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2263 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
2264 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
2265 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2266
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2267 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
2268 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2269 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
2270 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
2271 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2272
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2273 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
2274 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2275 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2276 if (button == MOUSE_LEFT) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2277 gen->pico_button_state &= ~0x80;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2278 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2279 }
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 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
2282 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2283 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2284 if (button == MOUSE_LEFT) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2285 gen->pico_button_state |= 0x80;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2286 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2287 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2288
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2289 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
2290 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2291 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
2292 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
2293 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2294
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2295 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
2296 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2297 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
2298 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
2299 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2300
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2301 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
2302 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2303 genesis_context *gen = (genesis_context *)system;
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2304 //FIXME: coordinate translation feels a little off for storybook area
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2305 //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
2306 if (y < 24) {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2307 y = 24;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2308 }
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2309 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
2310 if (y < 320) {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2311 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
2312 } else {
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
2313 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
2314 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2315 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2316
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2317 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
2318 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2319 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2320 //TODO: scale properly
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2321 //TODO: limit to mouse motion on emulated storyware/drawing area
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2322 gen->pico_pen_x += x;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2323 gen->pico_pen_y += y;
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
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2326 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
2327 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2328 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
2329 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
2330 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2331
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2332 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
2333 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2334 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
2335 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
2336 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
2337
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2338 static void keyboard_down_pico(system_header *system, uint8_t scancode)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2339 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2340 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2341 //TODO: Keyboard Pico emulation
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2342 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2343
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2344 static void keyboard_up_pico(system_header *system, uint8_t scancode)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2345 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2346 genesis_context *gen = (genesis_context *)system;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2347 //TODO: Keyboard Pico emulation
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2348 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2349
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
2350 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
2351 {
51417bb557b6 Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents: 1766
diff changeset
2352 char *config_gain;
51417bb557b6 Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents: 1766
diff changeset
2353 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
2354 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
2355 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
2356 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
2357 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
2358
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2359 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
2360 ym_enable_zero_offset(gen->ym, !strcmp(config_dac, "zero_offset"));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2361 }
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
2362
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
2363 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
2364 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
2365 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
2366 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
2367 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
2368 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
2369 }
1796
51417bb557b6 Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents: 1766
diff changeset
2370 }
51417bb557b6 Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents: 1766
diff changeset
2371
1595
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
2372 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
2373 {
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
2374 genesis_context *gen = (genesis_context *)system;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2375 if (gen->header.type == SYSTEM_GENESIS) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2376 setup_io_devices(config, &system->info, &gen->io);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2377 }
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
2378 set_audio_config(gen);
2384
03e6ac327ba0 Handle changes to sample rate while content is running
Michael Pavone <pavone@retrodev.com>
parents: 2354
diff changeset
2379 //sample rate may have changed
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2380 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
2381 ym_adjust_master_clock(gen->ym, gen->master_clock);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2382 }
2384
03e6ac327ba0 Handle changes to sample rate while content is running
Michael Pavone <pavone@retrodev.com>
parents: 2354
diff changeset
2383 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
2384 if (gen->expansion) {
03e6ac327ba0 Handle changes to sample rate while content is running
Michael Pavone <pavone@retrodev.com>
parents: 2354
diff changeset
2385 segacd_config_updated(gen->expansion);
03e6ac327ba0 Handle changes to sample rate while content is running
Michael Pavone <pavone@retrodev.com>
parents: 2354
diff changeset
2386 }
1595
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
2387 }
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
2388
1909
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2389 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
2390 {
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2391 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
2392 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
2393 if (vgm) {
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2394 printf("Started logging VGM to %s\n", filename);
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2395 sync_sound(gen, vgm->last_cycle);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2396 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
2397 ym_vgm_log(gen->ym, gen->normal_clock, vgm);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2398 }
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
2399 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
2400 gen->header.vgm_logging = 1;
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2401 } else {
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2402 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
2403 }
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2404 }
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2405
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2406 static void stop_vgm_log(system_header *system)
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2407 {
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2408 puts("Stopped VGM log");
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2409 genesis_context *gen = (genesis_context *)system;
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2410 vgm_close(gen->ym->vgm);
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2411 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
2412 gen->ym->vgm = NULL;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2413 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2414 gen->psg->vgm = NULL;
1909
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2415 gen->header.vgm_logging = 0;
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2416 }
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2417
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2418 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
2419 {
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
2420 #ifndef IS_LIB
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2421 genesis_context *gen = (genesis_context *)system;
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2422 if (debug_view < DEBUG_OSCILLOSCOPE) {
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2423 vdp_toggle_debug_view(gen->vdp, debug_view);
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2424 } else if (debug_view == DEBUG_OSCILLOSCOPE) {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2425 if (gen->psg->scope) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2426 oscilloscope *scope = gen->psg->scope;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2427 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
2428 gen->adpcm->scope = NULL;
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
2429 } else {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2430 gen->ym->scope = NULL;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2431 }
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2432 gen->psg->scope = NULL;
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2433 if (gen->expansion) {
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2434 segacd_context *cd = gen->expansion;
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2435 cd->pcm.scope = NULL;
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2436 }
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2437 scope_close(scope);
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2438 } else {
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2439 oscilloscope *scope = create_oscilloscope();
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
2440 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
2441 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
2442 } else {
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2443 ym_enable_scope(gen->ym, scope, gen->normal_clock);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
2444 }
2255
74112041b2c7 Proper calculation of sample rate for YM2612/PSG oscilloscope view
Michael Pavone <pavone@retrodev.com>
parents: 2254
diff changeset
2445 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
2446 if (gen->expansion) {
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2447 segacd_context *cd = gen->expansion;
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2448 rf5c164_enable_scope(&cd->pcm, scope);
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2449 }
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2450 }
2271
3ef80963c2a7 Fix stamp address mask and add WIP CD graphics debug view
Michael Pavone <pavone@retrodev.com>
parents: 2267
diff changeset
2451 } 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
2452 scd_toggle_graphics_debug(gen->expansion);
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2453 }
2302
0343f0d5add0 Fix libretro build for real
Michael Pavone <pavone@retrodev.com>
parents: 2286
diff changeset
2454 #endif
2243
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2455 }
0d1d5dccdd28 Initial implementation of oscilloscope debug view
Michael Pavone <pavone@retrodev.com>
parents: 2228
diff changeset
2456
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2457 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
2458 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2459 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2460 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2461 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2462 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
2463 }
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
2464
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2465 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2466 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2467
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2468 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
2469 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2470 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2471 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2472 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2473 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
2474 }
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
2475
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2476 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2477 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2478
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2479 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
2480 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2481 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2482 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2483 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2484 return gen->tmss_read_16(address, context);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2485 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2486 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
2487 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2488
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2489 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
2490 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2491 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2492 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2493 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2494 return gen->tmss_read_8(address, context);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2495 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2496 #ifdef BLASTEM_BIG_ENDIAN
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2497 return gen->tmss_buffer[address];
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2498 #else
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2499 return gen->tmss_buffer[address ^ 1];
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2500 #endif
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2501 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2502
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2503 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
2504 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2505 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2506 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2507 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2508 address += gen->tmss_write_offset;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2509 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
2510 *dest = value;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2511 m68k_handle_code_write(address, m68k);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2512 }
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
2513
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2514 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2515 }
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 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
2518 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2519 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2520 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2521 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2522 address += gen->tmss_write_offset;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2523 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
2524 #ifdef BLASTEM_BIG_ENDIAN
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2525 dest[address & 1] = value;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2526 #else
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2527 dest[address & 1 ^ 1] = value;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2528 #endif
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2529 m68k_handle_code_write(address & ~1, m68k);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2530 }
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
2531
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2532 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2533 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2534
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2535 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
2536 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2537 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2538 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2539 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2540 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
2541 address >>= 1;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2542 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
2543 base[address] = value;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2544 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2545 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2546 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2547
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2548 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
2549 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2550 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2551 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2552 if (gen->tmss && (address & 1)) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2553 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
2554 address >>= 1;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2555 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
2556 base[address] = value;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2557 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2558 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2559 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2560
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2561 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
2562 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2563 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2564 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2565 if (gen->tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2566 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
2567 address >>= 1;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2568 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
2569 base[address] = value >> 8;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2570 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2571 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2572 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2573
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2574 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
2575 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2576 m68k_context *m68k = context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2577 genesis_context *gen = m68k->system;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2578 if (gen->tmss && !(address & 1)) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2579 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
2580 address >>= 1;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2581 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
2582 base[address] = value;
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 return context;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2585 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2586
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
2587 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
2588 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2589 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
2590 { 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
2591 { 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
2592 { 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
2593 { 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
2594 { 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
2595 };
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
2596
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
2597 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
2598 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
2599 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
2600 }
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
2601 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
2602 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
2603 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
2604 }
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
2605
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
2606 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
2607 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
2608 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
2609 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
2610 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
2611 gen->header.persist_save = persist_save;
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
2612 gen->header.load_state = load_state;
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
2613 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
2614 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
2615 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
2616 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
2617 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
2618 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
2619 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
2620 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
2621 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
2622 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
2623 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
2624 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
2625 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
2626 gen->header.config_updated = config_updated;
1690
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
2627 gen->header.serialize = serialize;
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
2628 gen->header.deserialize = deserialize;
1909
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2629 gen->header.start_vgm_log = start_vgm_log;
508522f08e4d Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents: 1907
diff changeset
2630 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
2631 gen->header.toggle_debug_view = toggle_debug_view;
1377
e587f16e7d3d Implemented SMS pause button
Michael Pavone <pavone@retrodev.com>
parents: 1374
diff changeset
2632 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
2633 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
2634 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
2635 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
2636 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
2637 if (tmss) {
5433252329fb Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents: 1889
diff changeset
2638 gen->version_reg |= 1;
2037
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
2639 } else {
b0b0c31338c3 Implement TMSS VDP lock
Michael Pavone <pavone@retrodev.com>
parents: 2034
diff changeset
2640 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
2641 }
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
2642
1906
2d462aa78349 Make VDP VSRAM capacity respect model selection
Michael Pavone <pavone@retrodev.com>
parents: 1904
diff changeset
2643 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
2644 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
2645 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
2646 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
2647 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
2648 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
2649 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
2650 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
2651
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
2652 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
2653 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
2654
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
2655 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
2656 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
2657 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
2658 system_opts |= YM_OPT_3834;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior
Michael Pavone <pavone@retrodev.com>
parents: 1902
diff changeset
2659 }
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
2660 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
2661
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2662 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
2663 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
2664
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
2665 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
2666 #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
2667 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
2668 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
2669 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
2670 #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
2671 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
2672 #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
2673 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
2674 #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
2675 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
2676 #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
2677
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2678 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
2679 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
2680 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
2681
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2682 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
2683 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
2684 {
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
2685 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
2686 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
2687 {
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
2688 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
2689 }
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
2690 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
2691 {
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
2692 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
2693 }
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
2694 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
2695 {
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
2696 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
2697 }
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
2698 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
2699 {
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
2700 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
2701 }
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
2702 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
2703 {
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
2704 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
2705 }
1906
2d462aa78349 Make VDP VSRAM capacity respect model selection
Michael Pavone <pavone@retrodev.com>
parents: 1904
diff changeset
2706 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
2707 {
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
2708 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
2709 }
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
2710 }
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
2711
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
2712 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
2713 }
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
2714
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
2715 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
2716 {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
2717 {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
2718 .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
2719 {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
2720 .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
2721 {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
2722 .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
2723 };
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
2724 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
2725
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
2726 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
2727 {
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
2728 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
2729 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
2730 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
2731 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
2732 #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
2733 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
2734 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
2735 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
2736 }
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
2737 #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
2738 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
2739 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
2740 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
2741 }
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
2742 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
2743 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
2744 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
2745 }
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
2746 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
2747 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
2748
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
2749 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
2750 gen->lock_on = lock_on;
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
2751
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
2752 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
2753 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
2754 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
2755 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
2756 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
2757 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
2758 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
2759 gen->save_storage = info.save_buffer;
2286
5d3411f52d00 Fix ui.reload for locked-on ROMs
Michael Pavone <pavone@retrodev.com>
parents: 2281
diff changeset
2760 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
2761 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
2762 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
2763 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
2764 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
2765 } 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
2766 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
2767 //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
2768 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2769 } 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
2770 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
2771 }
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
2772
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 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
2774
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
2775 tern_node *model = get_model(config, SYSTEM_GENESIS);
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
2776 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
2777
1165
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
2778 //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
2779 uint8_t next_ptr_index = 0;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2780 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
2781 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
2782 {
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
2783 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
2784 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
2785 if (!tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2786 break;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2787 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2788 }
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
2789 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
2790 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
2791 }
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
2792 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
2793 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
2794 if (highest_offset > tmss_min_alloc) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2795 tmss_min_alloc = highest_offset;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2796 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2797 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2798 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2799 if (tmss) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2800 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
2801 uint8_t *buffer = malloc(tmss_min_alloc);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2802 uint32_t tmss_size;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2803 if (is_absolute_path(tmss_path)) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2804 FILE *f = fopen(tmss_path, "rb");
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2805 if (!f) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2806 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
2807 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2808 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
2809 fclose(f);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2810 } else {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2811 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
2812 if (!tmp) {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2813 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
2814 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2815 memcpy(buffer, tmp, tmss_size);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2816 free(tmp);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2817 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2818 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
2819 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2820 buffer[tmss_size] = 0xFF;
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2821 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2822 #ifndef BLASTEM_BIG_ENDIAN
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2823 byteswap_rom(tmss_size, (uint16_t *)buffer);
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2824 #endif
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2825 //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
2826 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
2827 {
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2828 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
2829 }
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2830 //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
2831 //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
2832 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
2833 {
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
2834 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
2835 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
2836 //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
2837 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
2838 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
2839 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
2840 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
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 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
2843 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
2844 } 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
2845 //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
2846 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
2847 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
2848 if (info.map[i].write_16) {
2034
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2849 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
2850 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
2851 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
2852 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
2853 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
2854 } 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
2855 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
2856 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
2857 } 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
2858 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
2859 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2860 }
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
2861 } 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
2862 //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
2863 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
2864 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
2865 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
2866 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
2867 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
2868 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
2869 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
2870 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
2871 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
2872 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
2873 } 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
2874 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
2875 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
2876 } 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
2877 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
2878 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
2879 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2880 } 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
2881 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
2882 }
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
2883 } 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
2884 //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
2885 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
2886 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
2887 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
2888 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
2889 }
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
2890 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
2891 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
2892 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
2893 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
2894 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
2895 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
2896 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
2897 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
2898 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
2899 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
2900 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
2901 } 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
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 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
2905 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
2906 } 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
2907 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
2908 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2909 } 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
2910 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
2911 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2912 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2913 }
8b2ef428d1aa Implement TMSS ROM and cart mapping register
Michael Pavone <pavone@retrodev.com>
parents: 2033
diff changeset
2914 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
2915 }
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
2916 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
2917 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
2918 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
2919 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
2920 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
2921 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
2922 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
2923 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
2924 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
2925 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
2926 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
2927 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
2928 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
2929 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
2930 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
2931 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
2932 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
2933 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
2934 {
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 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
2936 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
2937 }
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
2938 }
2090
00b6592cad42 Fix typo that messed up Mode 1 for carts with mappers
Michael Pavone <pavone@retrodev.com>
parents: 2088
diff changeset
2939 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
2940 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
2941 {
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
2942 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
2943 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
2944 }
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 }
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 cd->base = 0x400000;
2272
777900eb8e15 Add address logging support to sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 2271
diff changeset
2947 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
2948 }
2248
f7e2e11f1214 Fix improper free of memory map array from rom_info
Michael Pavone <pavone@retrodev.com>
parents: 2243
diff changeset
2949 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
2950
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2951 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
2952 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
2953 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
2954 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
2955 }
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
2956 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
2957 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
2958 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
2959
1165
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
2960 //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
2961 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
2962 {
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
2963 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
2964 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
2965 }
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
2966 }
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
2967
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
2968 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
2969 //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
2970 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
2971 {
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
2972 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
2973 }
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
2974 }
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
2975 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
2976
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
2977 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
2978 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
2979 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2980
1692
5dacaef602a7 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1503 1643
diff changeset
2981 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
2982 {
1692
5dacaef602a7 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1503 1643
diff changeset
2983 tern_node *rom_db = get_rom_db();
5dacaef602a7 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1503 1643
diff changeset
2984 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
2985 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
2986 //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
2987 //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
2988 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
2989 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
2990 {
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
2991 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
2992 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
2993 break;
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
2994 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
2995 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
2996 break;
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
2997 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
2998 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
2999 break;
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3000 }
94cca8b8429e Use byte in security code for region identification for Sega/Mega CD discs
Michael Pavone <pavone@retrodev.com>
parents: 2255
diff changeset
3001 }
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
3002
1692
5dacaef602a7 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1503 1643
diff changeset
3003 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
3004 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
3005 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
3006 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
3007 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
3008 gen->version_reg &= ~NO_DISK;
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
3009
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
3010 gen->expansion = cd;
2272
777900eb8e15 Add address logging support to sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 2271
diff changeset
3011 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
3012 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
3013 cd->genesis = gen;
1692
5dacaef602a7 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1503 1643
diff changeset
3014 setup_io_devices(config, &info, &gen->io);
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
3015
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
3016 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
3017 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
3018 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
3019 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
3020 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
3021 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
3022 uint32_t num_chunks = cd_chunks + base_chunks;
2053
3414a4423de1 Merge from default
Michael Pavone <pavone@retrodev.com>
parents: 1692 2052
diff changeset
3023
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
3024 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
3025 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
3026 //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
3027 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
3028 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
3029 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
3030 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
3031
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 //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
3033 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
3034 {
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
3035 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
3036 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
3037 }
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
3038 }
2083
372625dd9590 Persist BRAM to file. Load BIOS relative to blastem directory
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
3039 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
3040
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
3041 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
3042 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
3043 }
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3044
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3045 static memmap_chunk pico_base_map[] = {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3046 {0xE00000, 0x1000000, 0xFFFF, .flags = MMAP_READ | MMAP_WRITE | MMAP_CODE},
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3047 {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
3048 .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
3049 {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
3050 .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
3051 {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
3052 .read_8 = copera_io_read, .write_8 = copera_io_write}
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3053 };
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3054 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
3055
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3056 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
3057 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3058 tern_node *rom_db = get_rom_db();
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3059 uint32_t chunks = pico_base_chunks;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3060 if (stype == SYSTEM_PICO) {
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3061 chunks--;
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3062 }
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3063 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
3064 rom = info.rom;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3065 rom_size = info.rom_size;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3066 #ifndef BLASTEM_BIG_ENDIAN
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3067 byteswap_rom(nearest_pow2(rom_size), rom);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3068 if (lock_on) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3069 byteswap_rom(nearest_pow2(lock_on_size), lock_on);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3070 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3071 #endif
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3072 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
3073 if (!m68k_divider) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3074 m68k_divider = "7";
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3075 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3076 MCLKS_PER_68K = atoi(m68k_divider);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3077 if (!MCLKS_PER_68K) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3078 MCLKS_PER_68K = 7;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3079 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3080 genesis_context *gen = calloc(1, sizeof(genesis_context));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3081 gen->header.set_speed_percent = set_speed_percent;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3082 gen->header.start_context = start_genesis;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3083 gen->header.resume_context = resume_genesis;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3084 gen->header.load_save = load_save;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3085 gen->header.persist_save = persist_save;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3086 gen->header.load_state = load_state;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3087 gen->header.soft_reset = soft_reset;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3088 gen->header.free_context = free_genesis;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3089 gen->header.get_open_bus_value = get_open_bus_value;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3090 gen->header.request_exit = request_exit;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3091 gen->header.inc_debug_mode = inc_debug_mode;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3092 gen->header.gamepad_down = gamepad_down_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3093 gen->header.gamepad_up = gamepad_up_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3094 gen->header.mouse_down = mouse_down_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3095 gen->header.mouse_up = mouse_up_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3096 gen->header.mouse_motion_absolute = mouse_motion_absolute_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3097 gen->header.mouse_motion_relative = mouse_motion_relative_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3098 gen->header.keyboard_down = keyboard_down_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3099 gen->header.keyboard_up = keyboard_up_pico;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3100 gen->header.config_updated = config_updated;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3101 gen->header.serialize = serialize;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3102 gen->header.deserialize = deserialize;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3103 gen->header.start_vgm_log = start_vgm_log;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3104 gen->header.stop_vgm_log = stop_vgm_log;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3105 gen->header.toggle_debug_view = toggle_debug_view;
2459
cb62730d5c99 Initial work on Copera emulation
Michael Pavone <pavone@retrodev.com>
parents: 2438
diff changeset
3106 gen->header.type = stype;
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3107 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
3108 set_region(gen, &info, force_region);
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3109 gen->vdp_unlocked = 1;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3110 gen->pico_button_state = 0xFF;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3111
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3112 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
3113 gen->vdp->system = &gen->header;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3114 gen->frame_end = vdp_cycles_to_frame_end(gen->vdp);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3115 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
3116 gen->max_cycles = config_cycles ? atoi(config_cycles) : DEFAULT_SYNC_INTERVAL;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3117 gen->int_latency_prev1 = MCLKS_PER_68K * 32;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3118 gen->int_latency_prev2 = MCLKS_PER_68K * 16;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3119
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3120 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
3121
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3122 gen->psg = calloc(1, sizeof(psg_context));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3123 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
3124
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
3125 gen->adpcm = calloc(1, sizeof(pico_pcm));
61c0bfe10887 Somewhat busted support for Pico ADPCM
Michael Pavone <pavone@retrodev.com>
parents: 2429
diff changeset
3126 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
3127
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3128 gen->work_ram = calloc(2, RAM_WORDS);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3129 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
3130 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3131 srand(time(NULL));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3132 for (int i = 0; i < RAM_WORDS; i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3133 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3134 gen->work_ram[i] = rand();
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3135 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3136 for (int i = 0; i < VRAM_SIZE; i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3137 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3138 gen->vdp->vdpmem[i] = rand();
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3139 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3140 for (int i = 0; i < SAT_CACHE_SIZE; i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3141 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3142 gen->vdp->sat_cache[i] = rand();
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3143 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3144 for (int i = 0; i < CRAM_SIZE; i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3145 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3146 write_cram_internal(gen->vdp, i, rand());
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3147 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3148 for (int i = 0; i < gen->vdp->vsram_size; i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3149 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3150 gen->vdp->vsram[i] = rand();
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3151 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3152 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3153 gen->cart = rom;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3154 gen->lock_on = lock_on;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3155 gen->header.has_keyboard = 0; //TODO: Keyboard Pico emulation
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3156 gen->mapper_type = info.mapper_type;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3157 gen->save_type = info.save_type;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3158 if (gen->save_type != SAVE_NONE) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3159 gen->save_ram_mask = info.save_mask;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3160 gen->save_size = info.save_size;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3161 gen->save_storage = info.save_buffer;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3162 gen->header.info.save_buffer = info.save_buffer = NULL;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3163 gen->eeprom_map = info.eeprom_map;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3164 gen->num_eeprom = info.num_eeprom;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3165 if (gen->save_type == SAVE_I2C) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3166 eeprom_init(&gen->eeprom, gen->save_storage, gen->save_size);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3167 } else if (gen->save_type == SAVE_NOR) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3168 memcpy(&gen->nor, info.nor, sizeof(gen->nor));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3169 //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
3170 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3171 } else {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3172 gen->save_storage = NULL;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3173 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3174
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3175 gen->mapper_start_index = info.mapper_start_index;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3176 //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
3177 for (int i = 0; i < info.map_chunks; i++)
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3178 {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3179 if (info.map[i].start == 0xE00000) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3180 info.map[i].buffer = gen->work_ram;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3181 break;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3182 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3183 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3184
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3185 memmap_chunk* map = info.map;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3186 uint32_t map_chunks = info.map_chunks;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3187 info.map = gen->header.info.map = NULL;
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 m68k_options *opts = malloc(sizeof(m68k_options));
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3190 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
3191 //TODO: Pico model selection
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3192 //if (!strcmp(tern_find_ptr_default(model, "tas", "broken"), "broken")) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3193 opts->gen.flags |= M68K_OPT_BROKEN_READ_MODIFY;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3194 //}
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3195 gen->m68k = init_68k_context(opts, NULL);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3196 gen->m68k->system = gen;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3197 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
3198
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3199 //This must happen after the 68K context has been allocated
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3200 for (int i = 0; i < map_chunks; i++)
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 if (map[i].flags & MMAP_PTR_IDX) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3203 gen->m68k->mem_pointers[map[i].ptr_index] = map[i].buffer;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3204 }
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
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3207 if (gen->mapper_type == MAPPER_SEGA) {
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3208 //initialize bank registers
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3209 for (int i = 1; i < sizeof(gen->bank_regs); i++)
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->bank_regs[i] = i;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3212 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3213 }
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3214 gen->reset_cycle = CYCLE_NEVER;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3215
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3216 set_audio_config(gen);
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3217 bindings_set_mouse_mode(MOUSE_ABSOLUTE);
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3218 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
3219 #ifndef IS_LIB
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3220 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
3221 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
3222 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
3223 tern_node *manifest = NULL;
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3224 if (manifest_str) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3225 manifest = parse_config(manifest_str);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3226 if (!manifest) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3227 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
3228 }
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3229 } else {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3230 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
3231 }
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3232
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3233 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
3234 if (!pages && manifest) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3235 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
3236 }
2438
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3237 char numkey[18];
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3238 for (int i = 0; i < 7; i++) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3239 uint8_t *img_data;
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3240 uint32_t img_size;
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3241 if (pages) {
2438
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3242 sprintf(numkey, "%d", i);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3243 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
3244 if (page_path) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3245 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
3246 } else {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3247 continue;
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3248 }
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3249 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
3250 if (!img_data) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3251 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
3252 continue;
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3253 }
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3254 } else {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3255 sprintf(numkey, "_%d.png", i);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3256 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
3257 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
3258 if (!img_data) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3259 sprintf(numkey, "_%d.PNG", i);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3260 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
3261 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
3262 if (!img_data) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3263 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
3264 free(img_path);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3265 free(img_path_loud);
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3266 continue;
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3267 }
2438
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3268 free(img_path_loud);
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3269 }
2438
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3270 free(img_path);
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3271 }
2438
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3272
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3273 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
3274 if (gen->pico_story_pages[i] == 0xFF) {
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3275 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
3276 }
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3277 free(img_data);
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3278 }
2438
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3279
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3280 free(manifest_name);
bed4d3db8a3f More flexible loading of Pico storyware assets
Michael Pavone <pavone@retrodev.com>
parents: 2437
diff changeset
3281 tern_free(manifest);
2429
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3282 pico_update_page(gen);
da3dc881d3f0 Initial implementation of storbook artwork display
Michael Pavone <pavone@retrodev.com>
parents: 2428
diff changeset
3283 #endif
2428
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3284 return gen;
65c2e4d990cc WIP Pico emulation
Michael Pavone <pavone@retrodev.com>
parents: 2424
diff changeset
3285 }