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annotate genesis.c @ 1758:95e387e1d63c mame_interp

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Fix build
author Michael Pavone <pavone@retrodev.com>
date Tue, 19 Feb 2019 07:03:57 +0000
parents 956c1cce05e2
children 8fe162bdb038
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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1 /*
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2 Copyright 2013-2016 Michael Pavone
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3 This file is part of BlastEm.
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
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5 */
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6 #include "genesis.h"
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7 #include "blastem.h"
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8 #include "nor.h"
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9 #include <stdlib.h>
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10 #include <ctype.h>
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11 #include <time.h>
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12 #include <string.h>
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13 #include "render.h"
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14 #include "gst.h"
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15 #include "util.h"
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16 #include "debug.h"
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17 #include "gdb_remote.h"
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18 #include "saves.h"
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19 #include "bindings.h"
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20 #include "jcart.h"
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21 #define MCLKS_NTSC 53693175
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22 #define MCLKS_PAL 53203395
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23
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24 uint32_t MCLKS_PER_68K;
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25 #define MCLKS_PER_YM 7
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26 #define MCLKS_PER_Z80 15
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27 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16)
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28 #define Z80_INT_PULSE_MCLKS 2573 //measured value is ~171.5 Z80 clocks
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29 #define DEFAULT_SYNC_INTERVAL MCLKS_LINE
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30 #define DEFAULT_LOWPASS_CUTOFF 3390
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31
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32 //TODO: Figure out the exact value for this
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33 #define LINES_NTSC 262
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34 #define LINES_PAL 313
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35
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36 #ifdef IS_LIB
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37 #define MAX_SOUND_CYCLES 1000
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38 #else
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4224980a5f84 Fix the previous WIP commit. Quick tests suggests things are no more broken than before now.
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39 #define MAX_SOUND_CYCLES 100000
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40 #endif
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22e87b739ad6 WIP split of 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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41
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42 void genesis_serialize(genesis_context *gen, serialize_buffer *buf, uint32_t m68k_pc)
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43 {
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44 start_section(buf, SECTION_68000);
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45 m68k_serialize(gen->m68k, m68k_pc, buf);
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46 end_section(buf);
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47
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48 start_section(buf, SECTION_Z80);
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49 z80_serialize(gen->z80, buf);
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50 end_section(buf);
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51
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52 start_section(buf, SECTION_VDP);
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53 vdp_serialize(gen->vdp, buf);
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54 end_section(buf);
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55
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56 start_section(buf, SECTION_YM2612);
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57 ym_serialize(gen->ym, buf);
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58 end_section(buf);
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59
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60 start_section(buf, SECTION_PSG);
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61 psg_serialize(gen->psg, buf);
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62 end_section(buf);
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63
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64 start_section(buf, SECTION_GEN_BUS_ARBITER);
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65 save_int8(buf, gen->z80->reset);
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66 save_int8(buf, gen->z80->busreq);
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67 save_int16(buf, gen->z80->bank_reg);
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68 end_section(buf);
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69
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70 start_section(buf, SECTION_SEGA_IO_1);
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71 io_serialize(gen->io.ports, buf);
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72 end_section(buf);
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73
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74 start_section(buf, SECTION_SEGA_IO_2);
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75 io_serialize(gen->io.ports + 1, buf);
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76 end_section(buf);
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77
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78 start_section(buf, SECTION_SEGA_IO_EXT);
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79 io_serialize(gen->io.ports + 2, buf);
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80 end_section(buf);
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81
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82 start_section(buf, SECTION_MAIN_RAM);
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83 save_int8(buf, RAM_WORDS * 2 / 1024);
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84 save_buffer16(buf, gen->work_ram, RAM_WORDS);
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85 end_section(buf);
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86
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87 start_section(buf, SECTION_SOUND_RAM);
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88 save_int8(buf, Z80_RAM_BYTES / 1024);
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89 save_buffer8(buf, gen->zram, Z80_RAM_BYTES);
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90 end_section(buf);
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91
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92 cart_serialize(&gen->header, buf);
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93 }
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94
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95 static uint8_t *serialize(system_header *sys, size_t *size_out)
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96 {
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97 genesis_context *gen = (genesis_context *)sys;
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98 uint32_t address;
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99 if (gen->m68k->resume_pc) {
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100 gen->m68k->target_cycle = gen->m68k->current_cycle;
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101 gen->header.save_state = SERIALIZE_SLOT+1;
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102 resume_68k(gen->m68k);
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103 if (size_out) {
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104 *size_out = gen->serialize_size;
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105 }
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106 return gen->serialize_tmp;
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107 } else {
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108 serialize_buffer state;
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109 init_serialize(&state);
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110 uint32_t address = read_word(4, (void **)gen->m68k->mem_pointers, &gen->m68k->options->gen, gen->m68k) << 16;
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111 address |= read_word(6, (void **)gen->m68k->mem_pointers, &gen->m68k->options->gen, gen->m68k);
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112 genesis_serialize(gen, &state, address);
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113 if (size_out) {
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114 *size_out = state.size;
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115 }
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116 return state.data;
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117 }
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118 }
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119
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120 static void ram_deserialize(deserialize_buffer *buf, void *vgen)
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121 {
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122 genesis_context *gen = vgen;
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123 uint32_t ram_size = load_int8(buf) * 1024 / 2;
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parents: 1420
diff changeset
124 if (ram_size > RAM_WORDS) {
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
125 fatal_error("State has a RAM size of %d bytes", ram_size * 2);
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parents: 1420
diff changeset
126 }
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
127 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
Michael Pavone <pavone@retrodev.com>
parents: 1449
diff changeset
128 m68k_invalidate_code_range(gen->m68k, 0xE00000, 0x1000000);
1427
4e5797b3935a WIP - New savestate format
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parents: 1420
diff changeset
129 }
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
130
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parents: 1420
diff changeset
131 static void zram_deserialize(deserialize_buffer *buf, void *vgen)
4e5797b3935a WIP - New savestate format
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parents: 1420
diff changeset
132 {
4e5797b3935a WIP - New savestate format
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parents: 1420
diff changeset
133 genesis_context *gen = vgen;
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parents: 1420
diff changeset
134 uint32_t ram_size = load_int8(buf) * 1024;
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
135 if (ram_size > Z80_RAM_BYTES) {
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
136 fatal_error("State has a Z80 RAM size of %d bytes", ram_size);
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
137 }
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
138 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
Michael Pavone <pavone@retrodev.com>
parents: 1449
diff changeset
139 z80_invalidate_code_range(gen->z80, 0, 0x4000);
1427
4e5797b3935a WIP - New savestate format
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parents: 1420
diff changeset
140 }
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
141
1445
349d50930c03 Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1444
diff changeset
142 static void update_z80_bank_pointer(genesis_context *gen)
349d50930c03 Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1444
diff changeset
143 {
1557
a0fbb1e90533 Fix Z80 bank access for $800000-$A00000 region for 10M flat mapped ROMs
Michael Pavone <pavone@retrodev.com>
parents: 1556
diff changeset
144 if (gen->z80->bank_reg < 0x140) {
1445
349d50930c03 Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1444
diff changeset
145 gen->z80->mem_pointers[1] = get_native_pointer(gen->z80->bank_reg << 15, (void **)gen->m68k->mem_pointers, &gen->m68k->options->gen);
349d50930c03 Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1444
diff changeset
146 } else {
349d50930c03 Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1444
diff changeset
147 gen->z80->mem_pointers[1] = NULL;
349d50930c03 Save and restore Z80 bank register in native save states
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parents: 1444
diff changeset
148 }
349d50930c03 Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1444
diff changeset
149 }
349d50930c03 Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1444
diff changeset
150
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
151 static void bus_arbiter_deserialize(deserialize_buffer *buf, void *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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parents: 1433
diff changeset
152 {
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
153 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
Michael Pavone <pavone@retrodev.com>
parents: 1433
diff changeset
154 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
155 gen->z80->busreq = load_int8(buf);
1445
349d50930c03 Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1444
diff changeset
156 gen->z80->bank_reg = load_int16(buf) & 0x1FF;
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
157 }
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
158
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
159 static void adjust_int_cycle(m68k_context * context, vdp_context * v_context);
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
160 void genesis_deserialize(deserialize_buffer *buf, genesis_context *gen)
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
161 {
4e5797b3935a WIP - New savestate format
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parents: 1420
diff changeset
162 register_section_handler(buf, (section_handler){.fun = m68k_deserialize, .data = gen->m68k}, SECTION_68000);
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Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
163 register_section_handler(buf, (section_handler){.fun = z80_deserialize, .data = gen->z80}, SECTION_Z80);
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
164 register_section_handler(buf, (section_handler){.fun = vdp_deserialize, .data = gen->vdp}, SECTION_VDP);
4e5797b3935a WIP - New savestate format
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parents: 1420
diff changeset
165 register_section_handler(buf, (section_handler){.fun = ym_deserialize, .data = gen->ym}, SECTION_YM2612);
4e5797b3935a WIP - New savestate format
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parents: 1420
diff changeset
166 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
167 register_section_handler(buf, (section_handler){.fun = bus_arbiter_deserialize, .data = gen}, SECTION_GEN_BUS_ARBITER);
1427
4e5797b3935a WIP - New savestate format
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parents: 1420
diff changeset
168 register_section_handler(buf, (section_handler){.fun = io_deserialize, .data = gen->io.ports}, SECTION_SEGA_IO_1);
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
169 register_section_handler(buf, (section_handler){.fun = io_deserialize, .data = gen->io.ports + 1}, SECTION_SEGA_IO_2);
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
170 register_section_handler(buf, (section_handler){.fun = io_deserialize, .data = gen->io.ports + 2}, SECTION_SEGA_IO_EXT);
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
171 register_section_handler(buf, (section_handler){.fun = ram_deserialize, .data = gen}, SECTION_MAIN_RAM);
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
172 register_section_handler(buf, (section_handler){.fun = zram_deserialize, .data = gen}, SECTION_SOUND_RAM);
1444
14a2834d010c Save/restore mapper state in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1440
diff changeset
173 register_section_handler(buf, (section_handler){.fun = cart_deserialize, .data = gen}, SECTION_MAPPER);
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
174 while (buf->cur_pos < buf->size)
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
175 {
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
176 load_section(buf);
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
177 }
1445
349d50930c03 Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1444
diff changeset
178 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
179 adjust_int_cycle(gen->m68k, gen->vdp);
1690
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
180 free(buf->handlers);
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
181 buf->handlers = NULL;
319d90025d50 Implement serialization/deserialization in libretro build
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parents: 1688
diff changeset
182 }
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
183
319d90025d50 Implement serialization/deserialization in libretro build
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parents: 1688
diff changeset
184 #include "m68k_internal.h" //needed for get_native_address_trans, should be eliminated once handling of PC is cleaned up
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
185 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
186 {
319d90025d50 Implement serialization/deserialization in libretro build
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parents: 1688
diff changeset
187 genesis_context *gen = (genesis_context *)sys;
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
188 deserialize_buffer buffer;
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
189 init_deserialize(&buffer, data, size);
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
190 genesis_deserialize(&buffer, gen);
1758
95e387e1d63c Fix build
Michael Pavone <pavone@retrodev.com>
parents: 1696
diff changeset
191 #ifdef USE_NATIVE
1690
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
192 //HACK: Fix this once PC/IR is represented in a better way in 68K core
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
193 gen->m68k->resume_pc = get_native_address_trans(gen->m68k, gen->m68k->last_prefetch_address);
1758
95e387e1d63c Fix build
Michael Pavone <pavone@retrodev.com>
parents: 1696
diff changeset
194 #endif
1427
4e5797b3935a WIP - New savestate format
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parents: 1420
diff changeset
195 }
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
196
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
197 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
198 {
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
199 genesis_context *genesis = (genesis_context *)current_system;
1420
975b5b7eaa77 Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents: 1416
diff changeset
200 //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
201 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
202 return 0;
975b5b7eaa77 Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents: 1416
diff changeset
203 }
975b5b7eaa77 Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents: 1416
diff changeset
204
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
205 //addresses here are word addresses (i.e. bit 0 corresponds to A1), so no need to do multiply by 2
1420
975b5b7eaa77 Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents: 1416
diff changeset
206 return read_word(address * 2, (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
207 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
208
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
209 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
210 {
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
211 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
212 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
213 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
214
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
215 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
216 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
217 //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
218 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
219 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
220 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
221 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
222 context->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
223 if ((context->status & 0x7) < 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
224 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
225 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
226 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
227 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
228 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
229 if ((context->status & 0x7) < 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
230 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
231 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
232 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
233 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
234 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
235 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.
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parents:
diff changeset
236
22e87b739ad6 WIP split of 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
237 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
238 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
239 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
240 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
241 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
242 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
243 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
244 /*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
245 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
246 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
247 }*/
1303
208803173ebc Implemented M68K trace mode. Some edge cases/SR update paths still need work
Michael Pavone <pavone@retrodev.com>
parents: 1291
diff changeset
248
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
249 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
250 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
251 return;
208803173ebc Implemented M68K trace mode. Some edge cases/SR update paths still need work
Michael Pavone <pavone@retrodev.com>
parents: 1291
diff changeset
252 }
1103
22e87b739ad6 WIP split of 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
253
22e87b739ad6 WIP split of 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
254 context->target_cycle = context->int_cycle < context->sync_cycle ? context->int_cycle : context->sync_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
255 if (context->should_return) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
256 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
257 } 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
258 //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
259 //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
260 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
261 }
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
262 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
263 //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
264 //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
265 //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
266 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
267 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
268 } 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
269 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
270 } 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
271 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
272 }
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
273
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
274 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
275 /*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
276 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
277 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
278 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
279
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
280 //#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
281 #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
282 #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
283 #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
284 #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
285 #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
286 #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
287 #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
288
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
289 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
290 {
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
291 genesis_context * gen = z_context->system;
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
292 vdp_run_context(gen->vdp, z_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
293 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
294 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
295 z_context->im2_vector = 0xFF;
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
296 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
297
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
298 static void sync_z80(z80_context * z_context, 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
299 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
300 #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
301 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
302 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
303 } 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
304 #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
305 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
306 z_context->current_cycle = 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
307 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
308 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
309
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
310 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
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 //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
313 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
314 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
315 //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
316 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
317 //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
318 ym_run(gen->ym, 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
319 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
320 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
321 ym_run(gen->ym, 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
322
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
323 //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
324 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
325
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
326 //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
327 static uint32_t last_frame_num;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
329 //My refresh emulation isn't currently good enough and causes more problems than it solves
1506
ded16f3d7eb4 Super hacky integration of the version of Musashi from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1471
diff changeset
330 //#define REFRESH_EMULATION
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 #ifdef REFRESH_EMULATION
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 #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
333 #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
334 uint32_t last_sync_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
335 uint32_t refresh_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
336 #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
337
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
338 #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
339 #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
340 #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
341
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 m68k_context * sync_components(m68k_context * context, 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
343 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
344 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
345 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
346 z80_context * z_context = 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
347 #ifdef REFRESH_EMULATION
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 //lame estimation of refresh cycle delay
1372
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
349 refresh_counter += context->current_cycle - last_sync_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
350 if (!gen->bus_busy) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 context->current_cycle += REFRESH_DELAY * MCLKS_PER_68K * (refresh_counter / (MCLKS_PER_68K * REFRESH_INTERVAL));
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 }
1372
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
353 refresh_counter = refresh_counter % (MCLKS_PER_68K * REFRESH_INTERVAL);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
354 #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
355
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
356 uint32_t mclks = 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
357 sync_z80(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
358 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
359 vdp_run_context(v_context, mclks);
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
360 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
361 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
362 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
363 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
364 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
365 if (v_context->frame != last_frame_num) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
366 //printf("reached frame end %d | MCLK Cycles: %d, Target: %d, VDP cycles: %d, vcounter: %d, hslot: %d\n", last_frame_num, mclks, gen->frame_end, v_context->cycles, v_context->vcounter, v_context->hslot);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
367 last_frame_num = v_context->frame;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
368
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 if(exit_after){
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 --exit_after;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 (!exit_after) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 exit(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
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 }
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
375 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
376 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
377 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
378 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
379 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
380 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
381 if (gen->mapper_type == MAPPER_JCART) {
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
382 jcart_adjust_cycles(gen, deduction);
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
383 }
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
384 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
385 z80_adjust_cycles(z_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
386 gen->ym->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
387 gen->psg->cycles -= 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
388 if (gen->ym->write_cycle != CYCLE_NEVER) {
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
389 gen->ym->write_cycle = gen->ym->write_cycle >= deduction ? gen->ym->write_cycle - deduction : 0;
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
390 }
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
391 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
392 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
393 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
394 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
395 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
396 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
397 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
398 //printf("Set sync cycle to: %d @ %d, vcounter: %d, hslot: %d\n", context->sync_cycle, context->current_cycle, v_context->vcounter, v_context->hslot);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
399 if (context->int_ack) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
400 //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);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
401 vdp_int_ack(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
402 context->int_ack = 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
403 }
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
404 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
405 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
406 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
408 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
409 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
410 }
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
411 #ifdef USE_NATIVE
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 if (address) {
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
413 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
414 gen->header.enter_debugger = 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
415 debugger(context, 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
416 }
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
417 if (gen->header.save_state && (z_context->pc || !z_context->native_pc || z_context->reset || !z_context->busreq)) {
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
418 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
419 gen->header.save_state = 0;
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
420 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
421 //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
422 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
423 {
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
424 sync_z80(z_context, z_context->current_cycle + MCLKS_PER_Z80);
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
425 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
426 }
1690
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
427 char *save_path = slot == SERIALIZE_SLOT ? NULL : get_slot_name(&gen->header, slot, use_native_states ? "state" : "gst");
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
428 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
429 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
430 init_serialize(&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
431 genesis_serialize(gen, &state, address);
1690
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
432 if (slot == SERIALIZE_SLOT) {
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
433 gen->serialize_tmp = state.data;
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
434 gen->serialize_size = state.size;
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
435 context->sync_cycle = context->current_cycle;
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
436 context->should_return = 1;
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
437 } else {
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
438 save_to_file(&state, save_path);
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
439 free(state.data);
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
440 }
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
441 } 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
442 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
443 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
444 printf("Saved state to %s\n", save_path);
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
445 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
446 } 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
447 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
448 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
449 }
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
450 #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
451 #ifdef REFRESH_EMULATION
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
452 last_sync_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
453 #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
454 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
455 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
457 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
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 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
460 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
461 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
463 //printf("vdp_port write: %X, value: %X, cycle: %d\n", vdp_port, value, context->current_cycle);
1372
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
464 #ifdef REFRESH_EMULATION
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
465 //do refresh check here so we can avoid adding a penalty for a refresh that happens during a VDP access
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
466 refresh_counter += context->current_cycle - 4*MCLKS_PER_68K - last_sync_cycle;
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
467 context->current_cycle += REFRESH_DELAY * MCLKS_PER_68K * (refresh_counter / (MCLKS_PER_68K * REFRESH_INTERVAL));
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
468 refresh_counter = refresh_counter % (MCLKS_PER_68K * REFRESH_INTERVAL);
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
469 last_sync_cycle = context->current_cycle;
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
470 #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
471 sync_components(context, 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
472 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
473 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
474 uint32_t before_cycle = v_context->cycles;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
476 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
477 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
478 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
479 while(v_context->flags & FLAG_DMA_RUN) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
481 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
482 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
483 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
484 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
485 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
486 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
487 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
488 gen->bus_busy = 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
489 sync_components(context, 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
490 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
491 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
492 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
493 //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
494 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
495 } 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
496 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
497 before_cycle = v_context->cycles;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
498 blocked = vdp_control_port_write(v_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
499 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
500 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
501 while(v_context->flags & FLAG_DMA_RUN) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
502 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
503 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
504 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
505 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
506 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
507 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
508 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
509 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
510 gen->bus_busy = 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
511 sync_components(context, 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
512 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
513 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
514 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
515
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
516 if (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
517 blocked = vdp_control_port_write(v_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
518 } 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
519 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
520 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
521 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
522 } 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
523 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
524 //printf("Set sync cycle to: %d @ %d, vcounter: %d, hslot: %d\n", context->sync_cycle, context->current_cycle, v_context->vcounter, v_context->hslot);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
525 adjust_int_cycle(context, 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
526 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
527 } 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
528 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
529 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
530 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
531 //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
532 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
533 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
534 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
535 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
536 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
538 //Lock the Z80 out of the bus until the VDP access is complete
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
539 gen->bus_busy = 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
540 sync_z80(gen->z80, 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
541 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
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 } 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
544 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
545 } 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
546 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
547 }
1372
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
548 #ifdef REFRESH_EMULATION
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
549 last_sync_cycle -= 4;
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
550 //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
551 //so advance refresh_counter but don't add any delays
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
552 if (vdp_port >= 4 && vdp_port < 8 && v_context->cycles != before_cycle) {
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
553 refresh_counter = 0;
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
554 } else {
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
555 refresh_counter += (context->current_cycle - last_sync_cycle);
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
556 refresh_counter = refresh_counter % (MCLKS_PER_68K * REFRESH_INTERVAL);
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
557 }
1372
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
558 last_sync_cycle = context->current_cycle;
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
559 #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
560 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
561 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
562
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
563 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
564 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
565 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
566 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
567
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
568 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
569 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
570 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
571 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
572 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
573 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
574 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
575 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
576 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
577 //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
578 if (vdp_port < 4) {
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
579 vdp_run_context(gen->vdp, 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
580 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
581 } 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
582 vdp_run_context_full(gen->vdp, 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
583 vdp_control_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
584 } 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
585 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
586 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
587 } 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
588 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
589 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
590 } 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
591 vdp_test_port_write(gen->vdp, 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
592 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
593 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
594 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
595
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
596 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
597 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
598 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
599 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
600 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
601 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
602 uint16_t value;
1372
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
603 #ifdef REFRESH_EMULATION
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
604 //do refresh check here so we can avoid adding a penalty for a refresh that happens during a VDP access
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
605 refresh_counter += context->current_cycle - 4*MCLKS_PER_68K - last_sync_cycle;
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
606 context->current_cycle += REFRESH_DELAY * MCLKS_PER_68K * (refresh_counter / (MCLKS_PER_68K * REFRESH_INTERVAL));
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
607 refresh_counter = refresh_counter % (MCLKS_PER_68K * REFRESH_INTERVAL);
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
608 last_sync_cycle = context->current_cycle;
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
609 #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
610 sync_components(context, 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
611 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
612 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
613 uint32_t before_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
614 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
615 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
616 value = vdp_data_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
617 } 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
618 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
619 } 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
620 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
621 //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
622 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
623 } 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
624 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
625 } 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
626 value = vdp_test_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
627 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
628 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
629 //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);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
630 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
631 //Lock the Z80 out of the bus until the VDP access is complete
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
632 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
633 gen->bus_busy = 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
634 sync_z80(gen->z80, 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
635 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
636 }
1372
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
637 #ifdef REFRESH_EMULATION
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
638 last_sync_cycle -= 4;
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
639 //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
640 //so advance refresh_counter but don't add any delays
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
641 refresh_counter += (context->current_cycle - last_sync_cycle);
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
642 refresh_counter = refresh_counter % (MCLKS_PER_68K * REFRESH_INTERVAL);
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
643 last_sync_cycle = context->current_cycle;
d78ef6f4fba2 Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents: 1371
diff changeset
644 #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
645 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
646 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
647
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
648 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
649 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
650 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
651 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
652 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
653 } 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
654 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
655 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
656 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
657
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
658 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
659 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
660 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
661 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
662 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
663 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
664 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
665 //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
666 //typical delay from bus arbitration
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
667 context->current_cycle += 3 * MCLKS_PER_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
668 //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
669 //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
670 // 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
671 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
672
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
673
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
674 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
675 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
676 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
677 //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
678 vdp_run_context(gen->vdp, 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
679 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
680 ret = vdp_data_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
681 } 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
682 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
683 } 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
684 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
685 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
686 } 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
687 //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
688 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
689 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
690 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
691 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
692
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
693 //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
694 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
695
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
696 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
697 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
698 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
699 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
700 //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
701 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
702 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
703 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
704 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
705 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
706 #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
707 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
708 #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
709 } 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
710 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
711 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
712 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
713 } 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
714 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
715 } 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
716 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
717 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
718 } 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
719 gen->z80->bank_reg = (gen->z80->bank_reg >> 1 | value << 8) & 0x1FF;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
720 if (gen->z80->bank_reg < 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
721 gen->z80->mem_pointers[1] = (gen->z80->bank_reg << 15) + ((char *)gen->z80->mem_pointers[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
722 } 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
723 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
724 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
725 } 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
726 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
727 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
728 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
729 } 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
730 location &= 0x1FFF;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
731 if (location < 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
732 switch(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
733 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
734 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
735 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
736 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
737 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
738 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
739 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
740 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
741 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
742 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
743 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
744 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
745 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
746 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
747 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
748 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
749 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
750 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
751 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
752 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
753 gen->io.ports[0].serial_out = 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
754 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
755 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
756 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
757 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
758 //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
759 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
760 case 0x9:
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
761 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
762 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
763 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
764 gen->io.ports[1].serial_out = 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
765 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
766 case 0xC:
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
767 gen->io.ports[1].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
768 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
769 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
770 gen->io.ports[2].serial_out = 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
771 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
772 case 0xF:
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
773 gen->io.ports[2].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
774 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
775 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
776 } 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
777 if (location == 0x1100) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
778 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
779 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
780 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
781 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
782 } 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
783 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
784 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
785 } 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
786 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
787 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
788 #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
789 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
790 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
791 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
792 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
793 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
794 #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
795 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
796 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
797 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
798 } 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
799 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
800 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
801 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
802 } else if (location == 0x1200) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
803 sync_z80(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
804 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
805 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
806 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
807 } 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
808 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
809 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
810 } 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
811 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
812 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
813 } 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
814 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
815 }
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
816 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
817 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
818 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
819 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
820 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
821 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
822 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
823
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
824 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
825 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
826 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
827 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
828 } 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
829 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
830 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
831 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
832
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
833 #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
834 #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
835 #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
836 #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
837 #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
838 #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
839
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
840 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
841 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
842 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
843 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
844 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
845 //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
846 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
847 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
848 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
849 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
850 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
851 } 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
852 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
853 value = ym_read_status(gen->ym);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
854 } 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
855 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
856 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
857 } 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
858 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
859 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
860 } 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
861 location &= 0x1FFF;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
862 if (location < 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
863 switch(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
864 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
865 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
866 //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
867 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
868 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
869 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
870 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
871 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
872 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
873 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
874 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
875 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
876 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
877 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
878 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
879 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
880 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
881 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
882 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
883 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
884 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
885 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
886 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
887 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
888 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
889 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
890 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
891 value = gen->io.ports[0].serial_in;
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
892 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
893 case 0x9:
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
894 value = gen->io.ports[0].serial_ctrl;
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
895 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
896 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
897 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
898 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
899 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
900 value = gen->io.ports[1].serial_in;
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
901 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
902 case 0xC:
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
903 value = gen->io.ports[1].serial_ctrl;
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
904 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
905 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
906 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
907 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
908 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
909 value = gen->io.ports[2].serial_in;
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
910 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
911 case 0xF:
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
912 value = gen->io.ports[2].serial_ctrl;
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
913 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
914 default:
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
915 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
916 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
917 } 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
918 if (location == 0x1100) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
919 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
920 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
921 dprintf("Byte read of BUSREQ returned %d @ %d (reset: %d)\n", value, context->current_cycle, gen->z80->reset);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
922 } else if (location == 0x1200) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
923 value = !gen->z80->reset;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
924 } 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
925 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
926 printf("Byte read of unknown IO location: %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
927 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
928 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
931 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
933 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
934 {
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
935 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
936 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
937 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
938 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
939 } 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
940 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
941 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
942 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
943 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
944 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
945
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
946 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
947 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
949 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
950 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
951 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
952 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
953 } 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
954 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
955 } 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
956 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
957 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
959 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
961 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
962 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
964 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
965 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
966 return ym_read_status(gen->ym);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
967 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
968
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
969 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
970 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
972 genesis_context *gen = context->system;
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
973
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 if (gen->bus_busy) {
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
975 #ifdef USE_NATIVE
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 context->current_cycle = context->sync_cycle;
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
977 #else
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
978 context->m_icount = 0;
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
979 #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
980 }
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
981
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 //typical delay from bus arbitration
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
983 #ifdef USE_NATIVE
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 context->current_cycle += 3 * MCLKS_PER_Z80;
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
985 #else
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
986 context->m_icount -= 3;
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
987 #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
988 //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
989 //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
990 // 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
991 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
992
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
993 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
994 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
995 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
996 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
997 uint32_t address = context->bank_reg << 15 | 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
998 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
999 return z80_vdp_port_read(location & 0xFF, 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
1000 } 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
1001 fprintf(stderr, "Unhandled read by Z80 from address %X through banked memory area (%X)\n", address, context->bank_reg << 15);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1003 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
1004 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1006 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
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 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
1009 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
1010 if (gen->bus_busy) {
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1011 #ifdef USE_NATIVE
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1012 context->current_cycle = context->sync_cycle;
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1013 #else
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1014 context->m_icount = 0;
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1015 #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
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 //typical delay from bus arbitration
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1018 #ifdef USE_NATIVE
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 context->current_cycle += 3 * MCLKS_PER_Z80;
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1020 #else
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1021 context->m_icount -= 3;
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1022 #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
1023 //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
1024 //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
1025 // 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
1026 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
1027
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1028 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
1029 uint32_t address = context->bank_reg << 15 | 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
1030 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
1031 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
1032 ((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
1033 } 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
1034 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
1035 } 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
1036 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
1037 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1038 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
1039 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1040
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1041 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
1042 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1043 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
1044
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1045 context->bank_reg = (context->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
1046 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
1047
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1048 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
1049 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
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
1051 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
1052 {
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
1053 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
1054 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
1055 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
1056 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
1057 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
1058 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1060 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
1061 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
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 (!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
1066 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
1067 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
1068 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
1069 } 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
1070 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
1071 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1072 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1073 if (region & REGION_E) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 gen->version_reg = NO_DISK | EUR;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 } else if (region & REGION_J) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 gen->version_reg = NO_DISK | JAP;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1077 } 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
1078 gen->version_reg = NO_DISK | USA;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1080
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1081 if (region & HZ50) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 gen->normal_clock = MCLKS_PAL;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 } 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
1084 gen->normal_clock = MCLKS_NTSC;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1085 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1087 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1089 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
1090 {
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1091 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
1092 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
1093 deserialize_buffer state;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1094 uint32_t pc = 0;
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1095 uint8_t ret = 0;
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1096 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
1097 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
1098 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
1099 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
1100 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
1101 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
1102 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
1103 }
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1104 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
1105 }
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1106 if (load_from_file(&state, statepath)) {
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1107 genesis_deserialize(&state, gen);
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1108 free(state.data);
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1109 //HACK
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1110 pc = gen->m68k->last_prefetch_address;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1111 ret = 1;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1112 } else {
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1113 #ifdef USE_NATIVE
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1114 strcpy(statepath + strlen(statepath)-strlen("state"), "gst");
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1115 pc = load_gst(gen, statepath);
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1116 ret = pc != 0;
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1117 #endif
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1118 }
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1119 #ifdef USE_NATIVE
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1120 if (ret) {
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1121 gen->m68k->resume_pc = get_native_address_trans(gen->m68k, pc);
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1122 }
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1123 #endif
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1124 done:
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1125 free(statepath);
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1126 return ret;
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1127 }
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1128
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1129 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
1130 {
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1131 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
1132 {
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1133 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
1134 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
1135 gen->m68k->should_return = 0;
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1136 z80_assert_reset(gen->z80, gen->m68k->current_cycle);
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1137 z80_clear_busreq(gen->z80, gen->m68k->current_cycle);
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1138 ym_reset(gen->ym);
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1139 //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
1140 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
1141 }
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1142 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
1143 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
1144 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
1145 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
1146 }
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1147 }
1688
395f684c5379 Fixed the most glaring issues in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1643
diff changeset
1148 #ifndef IS_LIB
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1149 bindings_release_capture();
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1150 vdp_release_framebuffer(gen->vdp);
1551
ce1f93be0104 Small cleanup to audio interface between emulation code and renderer backend
Michael Pavone <pavone@retrodev.com>
parents: 1534
diff changeset
1151 render_pause_source(gen->ym->audio);
ce1f93be0104 Small cleanup to audio interface between emulation code and renderer backend
Michael Pavone <pavone@retrodev.com>
parents: 1534
diff changeset
1152 render_pause_source(gen->psg->audio);
1688
395f684c5379 Fixed the most glaring issues in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1643
diff changeset
1153 #endif
1479
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1154 }
a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents: 1478
diff changeset
1155
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
1156 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
1157 {
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
1158 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
1159 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
1160 //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
1161 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
1162 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
1163 if (load_from_file(&state, statefile)) {
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
1164 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
1165 free(state.data);
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
1166 //HACK
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
1167 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
1168 } else {
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1169 #ifdef USE_NATIVE
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
1170 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
1171 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
1172 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
1173 }
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1174 #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
1175 }
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
1176 printf("Loaded %s\n", statefile);
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1177 #ifdef USE_NATIVE
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
1178 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
1179 gen->header.enter_debugger = 0;
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
1180 insert_breakpoint(gen->m68k, pc, gen->header.debugger_type == DEBUGGER_NATIVE ? debugger : gdb_debug_enter);
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
1181 }
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1182 #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
1183 adjust_int_cycle(gen->m68k, gen->vdp);
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
1184 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
1185 } else {
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1186 #ifdef USE_NATIVE
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
1187 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
1188 gen->header.enter_debugger = 0;
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
1189 uint32_t address = gen->cart[2] << 16 | gen->cart[3];
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
1190 insert_breakpoint(gen->m68k, address, gen->header.debugger_type == DEBUGGER_NATIVE ? debugger : gdb_debug_enter);
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
1191 }
1507
2455662378ed Added MAME Z80 core, re-enabled 68K tracing in Musashi core, disabled a bunch of code gen stuff when using interpreters from MAME
Michael Pavone <pavone@retrodev.com>
parents: 1506
diff changeset
1192 #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
1193 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
1194 }
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
1195 handle_reset_requests(gen);
1427
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents: 1420
diff changeset
1196 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
1197 }
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
1198
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
1199 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
1200 {
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
1201 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
1202 #ifndef IS_LIB
1184
b1147418254a Overscan is now configurable
Michael Pavone <pavone@retrodev.com>
parents: 1170
diff changeset
1203 render_set_video_standard((gen->version_reg & HZ50) ? VID_PAL : VID_NTSC);
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1204 bindings_reacquire_capture();
1401
b56c8c51ca5d Properly release and reacquire framebuffer pointer when switching contexts. Hopefully fixes the LOCKRECT issue some people are seeing with the SDL 2 fallback renderer
Michael Pavone <pavone@retrodev.com>
parents: 1395
diff changeset
1205 vdp_reacquire_framebuffer(gen->vdp);
1551
ce1f93be0104 Small cleanup to audio interface between emulation code and renderer backend
Michael Pavone <pavone@retrodev.com>
parents: 1534
diff changeset
1206 render_resume_source(gen->ym->audio);
ce1f93be0104 Small cleanup to audio interface between emulation code and renderer backend
Michael Pavone <pavone@retrodev.com>
parents: 1534
diff changeset
1207 render_resume_source(gen->psg->audio);
1688
395f684c5379 Fixed the most glaring issues in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1643
diff changeset
1208 #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
1209 resume_68k(gen->m68k);
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
1210 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
1211 }
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
1212
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
1213 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
1214 {
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
1215 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
1216 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
1217 }
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
1218
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
1219 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
1220 {
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
1221 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
1222 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
1223 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
1224 }
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
1225
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
1226 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
1227 {
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
1228 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
1229 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
1230 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
1231 }
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 FILE * f = fopen(save_filename, "wb");
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
1233 if (!f) {
1395
efa7225e0f07 Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents: 1377
diff changeset
1234 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
1235 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
1236 }
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
1237 fwrite(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
1238 fclose(f);
1395
efa7225e0f07 Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents: 1377
diff changeset
1239 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
1240 }
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
1241
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
1242 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
1243 {
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
1244 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
1245 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
1246 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
1247 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
1248 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
1249 if (read > 0) {
1395
efa7225e0f07 Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents: 1377
diff changeset
1250 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
1251 }
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
1252 }
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
1253 }
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1108
diff changeset
1254
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
1255 static void soft_reset(system_header *system)
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
1256 {
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
1257 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
1258 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
1259 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
1260 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
1261 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
1262 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
1263 }
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
1264 }
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
1265 }
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
1266
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
1267 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
1268 {
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
1269 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
1270 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
1271 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
1272 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
1273 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
1274 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
1275 free(gen->work_ram);
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
1276 z80_options_free(gen->z80->options);
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
1277 free(gen->z80);
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
1278 free(gen->zram);
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
1279 ym_free(gen->ym);
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
1280 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
1281 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
1282 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
1283 free(gen->lock_on);
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1284 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
1285 }
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
1286
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1287 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
1288 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1289 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
1290 io_gamepad_down(&gen->io, gamepad_num, button);
1610
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
1291 if (gen->mapper_type == MAPPER_JCART) {
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
1292 jcart_gamepad_down(gen, gamepad_num, button);
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
1293 }
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1294 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1295
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1296 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
1297 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1298 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
1299 io_gamepad_up(&gen->io, gamepad_num, button);
1610
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
1300 if (gen->mapper_type == MAPPER_JCART) {
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
1301 jcart_gamepad_up(gen, gamepad_num, button);
c206a422d466 Added J-Cart support
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
1302 }
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1303 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1304
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1305 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
1306 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1307 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
1308 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
1309 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1310
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1311 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
1312 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1313 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
1314 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
1315 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1316
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1317 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
1318 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1319 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
1320 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
1321 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1322
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1323 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
1324 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1325 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
1326 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
1327 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1328
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1329 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
1330 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1331 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
1332 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
1333 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1334
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1335 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
1336 {
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1337 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
1338 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
1339 }
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1340
1595
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
1341 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
1342 {
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
1343 genesis_context *gen = (genesis_context *)system;
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
1344 setup_io_devices(config, &system->info, &gen->io);
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
1345 }
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
1346
1113
45db303fc705 Restore 68K address logging functionality
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
1347 genesis_context *alloc_init_genesis(rom_info *rom, void *main_rom, void *lock_on, uint32_t system_opts, 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
1348 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1349 static memmap_chunk z80_map[] = {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1350 { 0x0000, 0x4000, 0x1FFF, 0, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, NULL, NULL, NULL, NULL, 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
1351 { 0x8000, 0x10000, 0x7FFF, 0, 0, 0, NULL, NULL, NULL, z80_read_bank, z80_write_bank},
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1352 { 0x4000, 0x6000, 0x0003, 0, 0, 0, NULL, NULL, NULL, z80_read_ym, z80_write_ym},
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1353 { 0x6000, 0x6100, 0xFFFF, 0, 0, 0, NULL, NULL, NULL, NULL, z80_write_bank_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
1354 { 0x7F00, 0x8000, 0x00FF, 0, 0, 0, NULL, NULL, NULL, z80_vdp_port_read, z80_vdp_port_write}
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1355 };
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1356 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
1357 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
1358 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
1359 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
1360 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
1361 gen->header.persist_save = persist_save;
1433
c886c54d8cf1 Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
1362 gen->header.load_state = load_state;
1208
95f5253e75c7 Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents: 1204
diff changeset
1363 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
1364 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
1365 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
1366 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
1367 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
1368 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
1369 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
1370 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
1371 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
1372 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
1373 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
1374 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
1375 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
1376 gen->header.config_updated = config_updated;
1690
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
1377 gen->header.serialize = serialize;
319d90025d50 Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents: 1688
diff changeset
1378 gen->header.deserialize = deserialize;
1377
e587f16e7d3d Implemented SMS pause button
Michael Pavone <pavone@retrodev.com>
parents: 1374
diff changeset
1379 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
1380 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
1381 set_region(gen, rom, force_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
1382
1640
3602f3b20072 Small cleanup of vdp_context struct layout and removal of separately allocated buffers
Michael Pavone <pavone@retrodev.com>
parents: 1636
diff changeset
1383 gen->vdp = init_vdp_context(gen->version_reg & 0x40);
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
1384 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
1385 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
1386 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
1387 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
1388 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
1389 gen->int_latency_prev2 = MCLKS_PER_68K * 16;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1390
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
1391 render_set_video_standard((gen->version_reg & HZ50) ? VID_PAL : VID_NTSC);
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
1392
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 gen->ym = malloc(sizeof(ym2612_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
1394 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
1395
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1397 psg_init(gen->psg, gen->master_clock, MCLKS_PER_PSG);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1398
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1399 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
1400 #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
1401 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
1402 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
1403 gen->z80 = init_z80_context(z_opts);
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
1404 gen->z80->next_int_pulse = z80_next_int_pulse;
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1406 #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
1407 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
1408 #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
1409
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1410 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
1411 gen->z80->mem_pointers[0] = gen->zram;
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
1412 gen->z80->mem_pointers[1] = gen->z80->mem_pointers[2] = (uint8_t *)main_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
1413
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 gen->cart = main_rom;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 gen->lock_on = lock_on;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1416 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
1417 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
1418 {
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
1419 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
1420 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
1421 {
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
1422 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
1423 }
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
1424 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
1425 {
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
1426 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
1427 }
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
1428 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
1429 {
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
1430 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
1431 }
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
1432 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
1433 {
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
1434 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
1435 }
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
1436 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
1437 {
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
1438 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
1439 }
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
1440 for (int i = 0; i < VSRAM_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
1441 {
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
1442 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
1443 }
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
1444 }
1116
fe8c79f82c22 More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents: 1113
diff changeset
1445 setup_io_devices(config, rom, &gen->io);
1583
430dd12e4010 Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents: 1576
diff changeset
1446 gen->header.has_keyboard = io_has_keyboard(&gen->io);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1447
1444
14a2834d010c Save/restore mapper state in native save states
Michael Pavone <pavone@retrodev.com>
parents: 1440
diff changeset
1448 gen->mapper_type = rom->mapper_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
1449 gen->save_type = rom->save_type;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1450 if (gen->save_type != SAVE_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
1451 gen->save_ram_mask = rom->save_mask;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1452 gen->save_size = rom->save_size;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1453 gen->save_storage = rom->save_buffer;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 gen->eeprom_map = rom->eeprom_map;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1455 gen->num_eeprom = rom->num_eeprom;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1457 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
1458 } else if (gen->save_type == SAVE_NOR) {
1519
1f745318f10a Made the NOR flash emulation a bit more flexible, but not yet flexible enough to properly support the flash chip in the MegaWiFi cart
Michael Pavone <pavone@retrodev.com>
parents: 1471
diff changeset
1459 memcpy(&gen->nor, rom->nor, sizeof(gen->nor));
1f745318f10a Made the NOR flash emulation a bit more flexible, but not yet flexible enough to properly support the flash chip in the MegaWiFi cart
Michael Pavone <pavone@retrodev.com>
parents: 1471
diff changeset
1460 //nor_flash_init(&gen->nor, gen->save_storage, gen->save_size, rom->save_page_size, rom->save_product_id, rom->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
1461 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 } 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
1463 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
1464 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1465
1165
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
1466 //This must happen before we generate memory access functions in init_m68k_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
1467 for (int i = 0; i < rom->map_chunks; i++)
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1468 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 if (rom->map[i].start == 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
1470 rom->map[i].buffer = gen->work_ram;
1165
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
1471 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
1472 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 m68k_options *opts = malloc(sizeof(m68k_options));
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1476 init_m68k_opts(opts, rom->map, rom->map_chunks, 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
1477 //TODO: make this configurable
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1478 opts->gen.flags |= M68K_OPT_BROKEN_READ_MODIFY;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. 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 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
1480 gen->m68k->system = gen;
1113
45db303fc705 Restore 68K address logging functionality
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
1481 opts->address_log = (system_opts & OPT_ADDRESS_LOG) ? fopen("address.log", "w") : NULL;
1165
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
1482
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
1483 //This must happen after the 68K context has been allocated
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
1484 for (int i = 0; i < rom->map_chunks; i++)
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
1485 {
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
1486 if (rom->map[i].flags & MMAP_PTR_IDX) {
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
1487 gen->m68k->mem_pointers[rom->map[i].ptr_index] = rom->map[i].buffer;
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
1488 }
9fc680b35dbb Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents: 1130
diff changeset
1489 }
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
1490
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
1491 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
1492 //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
1493 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
1494 {
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
1495 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
1496 }
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
1497 }
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1498
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1499 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
1500 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1501
1595
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
1502 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)
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1503 {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1504 static memmap_chunk base_map[] = {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1505 {0xE00000, 0x1000000, 0xFFFF, 0, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, 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
1506 NULL, NULL, NULL, 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
1507 {0xC00000, 0xE00000, 0x1FFFFF, 0, 0, 0, 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
1508 (read_16_fun)vdp_port_read, (write_16_fun)vdp_port_write,
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1509 (read_8_fun)vdp_port_read_b, (write_8_fun)vdp_port_write_b},
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1510 {0xA00000, 0xA12000, 0x1FFFF, 0, 0, 0, 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
1511 (read_16_fun)io_read_w, (write_16_fun)io_write_w,
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1512 (read_8_fun)io_read, (write_8_fun)io_write}
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1513 };
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1514 static tern_node *rom_db;
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1515 if (!rom_db) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1516 rom_db = load_rom_db();
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1517 }
1595
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
1518 rom_info info = configure_rom(rom_db, rom, rom_size, lock_on, lock_on_size, base_map, sizeof(base_map)/sizeof(base_map[0]));
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
1519 rom = info.rom;
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
1520 rom_size = info.rom_size;
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
1521 #ifndef BLASTEM_BIG_ENDIAN
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
1522 byteswap_rom(rom_size, 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
1523 if (lock_on) {
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
1524 byteswap_rom(lock_on_size, lock_on);
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1525 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1526 #endif
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
1527 char *m68k_divider = tern_find_path(config, "clocks\0m68k_divider\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
1528 if (!m68k_divider) {
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1529 m68k_divider = "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.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1530 }
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1531 MCLKS_PER_68K = atoi(m68k_divider);
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1532 if (!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
1533 MCLKS_PER_68K = 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.
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1534 }
1595
360d5bab199f Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents: 1593
diff changeset
1535 return alloc_init_genesis(&info, rom, lock_on, ym_opts, 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
1536 }