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annotate blastem.c @ 1009:883fe974f72b

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Fix bug in which save RAM/EEPROM was not persisted correctly if the emulator is exited via the menu rather than the X button in the title bar
author Michael Pavone <pavone@retrodev.com>
date Sun, 01 May 2016 22:07:37 -0700
parents 51885857c019
children 5fb64487b6e1
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467
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING
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1 /*
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2 Copyright 2013 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 <stdio.h>
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7 #include <stdlib.h>
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8 #include <string.h>
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9 #include <ctype.h>
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10
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11 #include "68kinst.h"
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12 #include "m68k_core.h"
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13 #include "z80_to_x86.h"
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14 #include "mem.h"
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15 #include "vdp.h"
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16 #include "render.h"
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17 #include "blastem.h"
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18 #include "gdb_remote.h"
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b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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19 #include "gst.h"
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20 #include "util.h"
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21 #include "romdb.h"
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22 #include "terminal.h"
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23 #include "arena.h"
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24
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1f3ddeaacaee Change version to 0.3.X so intermediate source builds do not get an inappropriate version number
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25 #define BLASTEM_VERSION "0.3.X"
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26
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27 #define MCLKS_NTSC 53693175
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28 #define MCLKS_PAL 53203395
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29
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30 uint32_t MCLKS_PER_68K;
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31 #define MCLKS_PER_YM 7
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32 #define MCLKS_PER_Z80 15
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33 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16)
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34 #define DEFAULT_SYNC_INTERVAL MCLKS_LINE
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35 #define DEFAULT_LOWPASS_CUTOFF 3390
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36
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37 //TODO: Figure out the exact value for this
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13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region
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38 #define LINES_NTSC 262
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39 #define LINES_PAL 312
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40
483
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41 #define MAX_SOUND_CYCLES 100000
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42
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43 #ifdef __ANDROID__
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44 #define FULLSCREEN_DEFAULT 1
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45 #else
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46 #define FULLSCREEN_DEFAULT 0
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47 #endif
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48
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49 uint16_t *cart;
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50 uint16_t *ram;
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51 uint8_t z80_ram[Z80_RAM_BYTES];
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52
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53 int headless = 0;
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b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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54 int exit_after = 0;
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55 int z80_enabled = 1;
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56 int frame_limit = 0;
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57
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58 tern_node * config;
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59
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60 #ifndef MIN
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61 #define MIN(a,b) ((a) < (b) ? (a) : (b))
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62 #endif
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63
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64 #define SMD_HEADER_SIZE 512
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65 #define SMD_MAGIC1 0x03
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66 #define SMD_MAGIC2 0xAA
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67 #define SMD_MAGIC3 0xBB
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68 #define SMD_BLOCK_SIZE 0x4000
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69
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70 int load_smd_rom(long filesize, FILE * f)
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71 {
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72 uint8_t block[SMD_BLOCK_SIZE];
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73 filesize -= SMD_HEADER_SIZE;
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74 fseek(f, SMD_HEADER_SIZE, SEEK_SET);
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75
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76 uint16_t * dst = cart = malloc(nearest_pow2(filesize));
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77 int rom_size = filesize;
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78 while (filesize > 0) {
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79 fread(block, 1, SMD_BLOCK_SIZE, f);
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80 for (uint8_t *low = block, *high = (block+SMD_BLOCK_SIZE/2), *end = block+SMD_BLOCK_SIZE; high < end; high++, low++) {
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81 *(dst++) = *low << 8 | *high;
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82 }
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83 filesize -= SMD_BLOCK_SIZE;
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84 }
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85 return rom_size;
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86 }
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87
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88 void byteswap_rom(int filesize)
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89 {
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90 for(unsigned short * cur = cart; cur - cart < filesize/2; ++cur)
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91 {
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92 *cur = (*cur >> 8) | (*cur << 8);
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93 }
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94 }
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95
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96 int load_rom(char * filename)
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97 {
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98 uint8_t header[10];
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99 FILE * f = fopen(filename, "rb");
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100 if (!f) {
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101 return 0;
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102 }
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103 if (sizeof(header) != fread(header, 1, sizeof(header), f)) {
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104 fatal_error("Error reading from %s\n", filename);
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105 }
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106 fseek(f, 0, SEEK_END);
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107 long filesize = ftell(f);
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108 fseek(f, 0, SEEK_SET);
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109 if (header[1] == SMD_MAGIC1 && header[8] == SMD_MAGIC2 && header[9] == SMD_MAGIC3) {
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110 int i;
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111 for (i = 3; i < 8; i++) {
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112 if (header[i] != 0) {
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113 break;
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114 }
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115 }
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116 if (i == 8) {
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117 if (header[2]) {
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118 fatal_error("%s is a split SMD ROM which is not currently supported", filename);
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119 }
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120 return load_smd_rom(filesize, f);
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121 }
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122 }
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123 cart = malloc(nearest_pow2(filesize));
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124 if (filesize != fread(cart, 1, filesize, f)) {
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125 fatal_error("Error reading from %s\n", filename);
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126 }
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127 fclose(f);
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128 return filesize;
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129 }
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130
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
131 uint16_t read_dma_value(uint32_t address)
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
132 {
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
133 //addresses here are word addresses (i.e. bit 0 corresponds to A1), so no need to do div by 2
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
134 if (address < 0x200000) {
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
135 return cart[address];
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
136 } else if(address >= 0x700000) {
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
137 return ram[address & 0x7FFF];
918
2e465934bddc Allow DMA from cartridge ROM above the 4MB mark. Should probably use get_native_pointer for everyting, but want to check the performance implications
Michael Pavone <pavone@retrodev.com>
parents: 913
diff changeset
138 } else {
2e465934bddc Allow DMA from cartridge ROM above the 4MB mark. Should probably use get_native_pointer for everyting, but want to check the performance implications
Michael Pavone <pavone@retrodev.com>
parents: 913
diff changeset
139 uint16_t *ptr = get_native_pointer(address*2, (void **)genesis->m68k->mem_pointers, &genesis->m68k->options->gen);
2e465934bddc Allow DMA from cartridge ROM above the 4MB mark. Should probably use get_native_pointer for everyting, but want to check the performance implications
Michael Pavone <pavone@retrodev.com>
parents: 913
diff changeset
140 if (ptr) {
2e465934bddc Allow DMA from cartridge ROM above the 4MB mark. Should probably use get_native_pointer for everyting, but want to check the performance implications
Michael Pavone <pavone@retrodev.com>
parents: 913
diff changeset
141 return *ptr;
2e465934bddc Allow DMA from cartridge ROM above the 4MB mark. Should probably use get_native_pointer for everyting, but want to check the performance implications
Michael Pavone <pavone@retrodev.com>
parents: 913
diff changeset
142 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
143 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
144 //TODO: Figure out what happens when you try to DMA from weird adresses like IO or banked Z80 area
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
145 return 0;
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
146 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
147
981
902c53d9c16f Half assed, prefetch based open bus value emulation. Gets BlastEm up to 119/122 in VDP FIFO Testing
Michael Pavone <pavone@retrodev.com>
parents: 978
diff changeset
148 uint16_t get_open_bus_value()
902c53d9c16f Half assed, prefetch based open bus value emulation. Gets BlastEm up to 119/122 in VDP FIFO Testing
Michael Pavone <pavone@retrodev.com>
parents: 978
diff changeset
149 {
902c53d9c16f Half assed, prefetch based open bus value emulation. Gets BlastEm up to 119/122 in VDP FIFO Testing
Michael Pavone <pavone@retrodev.com>
parents: 978
diff changeset
150 return read_dma_value(genesis->m68k->last_prefetch_address/2);
902c53d9c16f Half assed, prefetch based open bus value emulation. Gets BlastEm up to 119/122 in VDP FIFO Testing
Michael Pavone <pavone@retrodev.com>
parents: 978
diff changeset
151 }
902c53d9c16f Half assed, prefetch based open bus value emulation. Gets BlastEm up to 119/122 in VDP FIFO Testing
Michael Pavone <pavone@retrodev.com>
parents: 978
diff changeset
152
186
02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write
Mike Pavone <pavone@retrodev.com>
parents: 185
diff changeset
153 void adjust_int_cycle(m68k_context * context, vdp_context * v_context)
02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write
Mike Pavone <pavone@retrodev.com>
parents: 185
diff changeset
154 {
717
22dbdf50d33c Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents: 700
diff changeset
155 //static int old_int_cycle = CYCLE_NEVER;
696
0b2242bbc84a Added config option to allow specifying a max sync cycle smaller than the end of frame
Michael Pavone <pavone@retrodev.com>
parents: 695
diff changeset
156 genesis_context *gen = context->system;
0b2242bbc84a Added config option to allow specifying a max sync cycle smaller than the end of frame
Michael Pavone <pavone@retrodev.com>
parents: 695
diff changeset
157 if (context->sync_cycle - context->current_cycle > gen->max_cycles) {
0b2242bbc84a Added config option to allow specifying a max sync cycle smaller than the end of frame
Michael Pavone <pavone@retrodev.com>
parents: 695
diff changeset
158 context->sync_cycle = context->current_cycle + gen->max_cycles;
0b2242bbc84a Added config option to allow specifying a max sync cycle smaller than the end of frame
Michael Pavone <pavone@retrodev.com>
parents: 695
diff changeset
159 }
317
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
160 context->int_cycle = CYCLE_NEVER;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
161 if ((context->status & 0x7) < 6) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
162 uint32_t next_vint = vdp_next_vint(v_context);
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
163 if (next_vint != CYCLE_NEVER) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
164 context->int_cycle = next_vint;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
165 context->int_num = 6;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
166 }
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
167 if ((context->status & 0x7) < 4) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
168 uint32_t next_hint = vdp_next_hint(v_context);
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
169 if (next_hint != CYCLE_NEVER) {
995
2bc27415565b Fix some stuff with interrupt timing. The change in adjust_int_cycle gets Overdrive working again (vint was not being preferred over hint in some cases). One of the changes seems to have broken Fatal Rewind again, but no other regressions that I can see.
Michael Pavone <pavone@retrodev.com>
parents: 981
diff changeset
170 next_hint = next_hint < context->current_cycle ? context->current_cycle : next_hint;
317
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
171 if (next_hint < context->int_cycle) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
172 context->int_cycle = next_hint;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
173 context->int_num = 4;
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
174
317
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
175 }
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
176 }
186
02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write
Mike Pavone <pavone@retrodev.com>
parents: 185
diff changeset
177 }
02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write
Mike Pavone <pavone@retrodev.com>
parents: 185
diff changeset
178 }
996
784bc1e45e80 Fix 68K interrupt handling some more. Fatal Rewind is working again.
Michael Pavone <pavone@retrodev.com>
parents: 995
diff changeset
179 if (context->int_cycle > context->current_cycle && context->int_pending == INT_PENDING_SR_CHANGE) {
846
98d7b6073163 Implement interrupt latency. Fixes Sesame Street: Counting Cafe and gives accurate results in my test ROM
Michael Pavone <pavone@retrodev.com>
parents: 844
diff changeset
180 context->int_pending = 0;
98d7b6073163 Implement interrupt latency. Fixes Sesame Street: Counting Cafe and gives accurate results in my test ROM
Michael Pavone <pavone@retrodev.com>
parents: 844
diff changeset
181 }
717
22dbdf50d33c Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents: 700
diff changeset
182 /*if (context->int_cycle != old_int_cycle) {
22dbdf50d33c Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents: 700
diff changeset
183 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);
22dbdf50d33c Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents: 700
diff changeset
184 old_int_cycle = context->int_cycle;
22dbdf50d33c Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents: 700
diff changeset
185 }*/
317
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
186
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
187 context->target_cycle = context->int_cycle < context->sync_cycle ? context->int_cycle : context->sync_cycle;
872
7022ba865cfd Initial work for allowing loading a ROM from menu
Michael Pavone <pavone@retrodev.com>
parents: 861
diff changeset
188 if (context->should_return) {
7022ba865cfd Initial work for allowing loading a ROM from menu
Michael Pavone <pavone@retrodev.com>
parents: 861
diff changeset
189 context->target_cycle = context->current_cycle;
891
90d54ccf9557 Fix a bad interaction between the implementation of STOP and the way interrupt cycles are calculated. Prevent addition of refresh delays while VDP has the bus.
Michael Pavone <pavone@retrodev.com>
parents: 889
diff changeset
190 } else if (context->target_cycle < context->current_cycle) {
90d54ccf9557 Fix a bad interaction between the implementation of STOP and the way interrupt cycles are calculated. Prevent addition of refresh delays while VDP has the bus.
Michael Pavone <pavone@retrodev.com>
parents: 889
diff changeset
191 //Changes to SR can result in an interrupt cycle that's in the past
90d54ccf9557 Fix a bad interaction between the implementation of STOP and the way interrupt cycles are calculated. Prevent addition of refresh delays while VDP has the bus.
Michael Pavone <pavone@retrodev.com>
parents: 889
diff changeset
192 //This can cause issues with the implementation of STOP though
90d54ccf9557 Fix a bad interaction between the implementation of STOP and the way interrupt cycles are calculated. Prevent addition of refresh delays while VDP has the bus.
Michael Pavone <pavone@retrodev.com>
parents: 889
diff changeset
193 context->target_cycle = context->current_cycle;
872
7022ba865cfd Initial work for allowing loading a ROM from menu
Michael Pavone <pavone@retrodev.com>
parents: 861
diff changeset
194 }
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
195 /*printf("Cyc: %d, Trgt: %d, Int Cyc: %d, Int: %d, Mask: %X, V: %d, H: %d, HICount: %d, HReg: %d, Line: %d\n",
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
196 context->current_cycle, context->target_cycle, context->int_cycle, context->int_num, (context->status & 0x7),
317
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
197 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);*/
186
02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write
Mike Pavone <pavone@retrodev.com>
parents: 185
diff changeset
198 }
02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write
Mike Pavone <pavone@retrodev.com>
parents: 185
diff changeset
199
198
209a37eed3e7 Add support for breaking into the debugger while game is running
Mike Pavone <pavone@retrodev.com>
parents: 197
diff changeset
200 int break_on_sync = 0;
955
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
201 char *save_state_path;
260
625f8e4d5fd2 Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 215
diff changeset
202
280
9ee64039ddeb Fix bank register update
Mike Pavone <pavone@retrodev.com>
parents: 279
diff changeset
203 //#define DO_DEBUG_PRINT
268
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset
Mike Pavone <pavone@retrodev.com>
parents: 266
diff changeset
204 #ifdef DO_DEBUG_PRINT
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset
Mike Pavone <pavone@retrodev.com>
parents: 266
diff changeset
205 #define dprintf printf
271
969ee17471c5 Protect debug prints for busreq/reset regs with appropriate macros
Mike Pavone <pavone@retrodev.com>
parents: 268
diff changeset
206 #define dputs puts
268
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset
Mike Pavone <pavone@retrodev.com>
parents: 266
diff changeset
207 #else
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset
Mike Pavone <pavone@retrodev.com>
parents: 266
diff changeset
208 #define dprintf
271
969ee17471c5 Protect debug prints for busreq/reset regs with appropriate macros
Mike Pavone <pavone@retrodev.com>
parents: 268
diff changeset
209 #define dputs
268
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset
Mike Pavone <pavone@retrodev.com>
parents: 266
diff changeset
210 #endif
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset
Mike Pavone <pavone@retrodev.com>
parents: 266
diff changeset
211
402
de2c085ce174 Assert z80 interrupt longer so that they are not missed when they should not be
Mike Pavone <pavone@retrodev.com>
parents: 398
diff changeset
212 #define Z80_VINT_DURATION 128
de2c085ce174 Assert z80 interrupt longer so that they are not missed when they should not be
Mike Pavone <pavone@retrodev.com>
parents: 398
diff changeset
213
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
214 void z80_next_int_pulse(z80_context * z_context)
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
215 {
682
Michael Pavone <pavone@retrodev.com>
parents: 680 559
diff changeset
216 genesis_context * gen = z_context->system;
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
217 z_context->int_pulse_start = vdp_next_vint_z80(gen->vdp);
670
f4f3e74b0ce6 Restore Z80 interrupt pulse duration and make a small improvement to debug print output
Michael Pavone <pavone@retrodev.com>
parents: 669
diff changeset
218 z_context->int_pulse_end = z_context->int_pulse_start + Z80_VINT_DURATION * MCLKS_PER_Z80;
682
Michael Pavone <pavone@retrodev.com>
parents: 680 559
diff changeset
219 }
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
220
268
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset
Mike Pavone <pavone@retrodev.com>
parents: 266
diff changeset
221 void sync_z80(z80_context * z_context, uint32_t mclks)
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
222 {
565
9324f721efa6 Add a separate flag/define for disabling the Z80 at compile time to ease refactoring
Michael Pavone <pavone@retrodev.com>
parents: 558
diff changeset
223 #ifndef NO_Z80
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
224 if (z80_enabled) {
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
225 z80_run(z_context, mclks);
548
a3afee2271ce Initial work on the x86-32 target
Michael Pavone <pavone@retrodev.com>
parents: 534
diff changeset
226 } else
a3afee2271ce Initial work on the x86-32 target
Michael Pavone <pavone@retrodev.com>
parents: 534
diff changeset
227 #endif
a3afee2271ce Initial work on the x86-32 target
Michael Pavone <pavone@retrodev.com>
parents: 534
diff changeset
228 {
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
229 z_context->current_cycle = mclks;
260
625f8e4d5fd2 Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 215
diff changeset
230 }
268
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset
Mike Pavone <pavone@retrodev.com>
parents: 266
diff changeset
231 }
380
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
parents: 374
diff changeset
232
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
parents: 374
diff changeset
233 void sync_sound(genesis_context * gen, uint32_t target)
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
parents: 374
diff changeset
234 {
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
parents: 374
diff changeset
235 //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);
483
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
236 while (target > gen->psg->cycles && target - gen->psg->cycles > MAX_SOUND_CYCLES) {
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
237 uint32_t cur_target = gen->psg->cycles + MAX_SOUND_CYCLES;
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
238 //printf("Running PSG to cycle %d\n", cur_target);
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
239 psg_run(gen->psg, cur_target);
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
240 //printf("Running YM-2612 to cycle %d\n", cur_target);
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
241 ym_run(gen->ym, cur_target);
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
242 }
380
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
parents: 374
diff changeset
243 psg_run(gen->psg, target);
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
parents: 374
diff changeset
244 ym_run(gen->ym, target);
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
245
380
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
parents: 374
diff changeset
246 //printf("Target: %d, YM bufferpos: %d, PSG bufferpos: %d\n", target, gen->ym->buffer_pos, gen->psg->buffer_pos * 2);
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
parents: 374
diff changeset
247 }
1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
parents: 374
diff changeset
248
978
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
249 uint32_t last_frame_num;
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
250
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
251 //My refresh emulation isn't currently good enough and causes more problems than it solves
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
252 #ifdef REFRESH_EMULATION
928
8bd82aead087 Minor adjustment to refresh interval to better match latest measurements
Michael Pavone <pavone@retrodev.com>
parents: 918
diff changeset
253 #define REFRESH_INTERVAL 128
889
2d1122123fe9 Approximation of refresh wait states
Michael Pavone <pavone@retrodev.com>
parents: 885
diff changeset
254 #define REFRESH_DELAY 2
2d1122123fe9 Approximation of refresh wait states
Michael Pavone <pavone@retrodev.com>
parents: 885
diff changeset
255 uint32_t last_sync_cycle;
2d1122123fe9 Approximation of refresh wait states
Michael Pavone <pavone@retrodev.com>
parents: 885
diff changeset
256 uint32_t refresh_counter;
978
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
257 #endif
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
258
268
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset
Mike Pavone <pavone@retrodev.com>
parents: 266
diff changeset
259 m68k_context * sync_components(m68k_context * context, uint32_t address)
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset
Mike Pavone <pavone@retrodev.com>
parents: 266
diff changeset
260 {
288
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
261 genesis_context * gen = context->system;
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
262 vdp_context * v_context = gen->vdp;
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
263 z80_context * z_context = gen->z80;
978
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
264 #ifdef REFRESH_EMULATION
889
2d1122123fe9 Approximation of refresh wait states
Michael Pavone <pavone@retrodev.com>
parents: 885
diff changeset
265 //lame estimation of refresh cycle delay
891
90d54ccf9557 Fix a bad interaction between the implementation of STOP and the way interrupt cycles are calculated. Prevent addition of refresh delays while VDP has the bus.
Michael Pavone <pavone@retrodev.com>
parents: 889
diff changeset
266 if (!gen->bus_busy) {
90d54ccf9557 Fix a bad interaction between the implementation of STOP and the way interrupt cycles are calculated. Prevent addition of refresh delays while VDP has the bus.
Michael Pavone <pavone@retrodev.com>
parents: 889
diff changeset
267 refresh_counter += context->current_cycle - last_sync_cycle;
90d54ccf9557 Fix a bad interaction between the implementation of STOP and the way interrupt cycles are calculated. Prevent addition of refresh delays while VDP has the bus.
Michael Pavone <pavone@retrodev.com>
parents: 889
diff changeset
268 context->current_cycle += REFRESH_DELAY * MCLKS_PER_68K * (refresh_counter / (MCLKS_PER_68K * REFRESH_INTERVAL));
90d54ccf9557 Fix a bad interaction between the implementation of STOP and the way interrupt cycles are calculated. Prevent addition of refresh delays while VDP has the bus.
Michael Pavone <pavone@retrodev.com>
parents: 889
diff changeset
269 refresh_counter = refresh_counter % (MCLKS_PER_68K * REFRESH_INTERVAL);
90d54ccf9557 Fix a bad interaction between the implementation of STOP and the way interrupt cycles are calculated. Prevent addition of refresh delays while VDP has the bus.
Michael Pavone <pavone@retrodev.com>
parents: 889
diff changeset
270 }
978
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
271 #endif
889
2d1122123fe9 Approximation of refresh wait states
Michael Pavone <pavone@retrodev.com>
parents: 885
diff changeset
272
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
273 uint32_t mclks = context->current_cycle;
268
6c2d7e003a55 Sync Z80 on writes to busreq/reset ports. NULL out extra_pc on z80 reset
Mike Pavone <pavone@retrodev.com>
parents: 266
diff changeset
274 sync_z80(z_context, mclks);
695
e1345921e481 Indentation fixup
Michael Pavone <pavone@retrodev.com>
parents: 693
diff changeset
275 sync_sound(gen, mclks);
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
276 vdp_run_context(v_context, mclks);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
277 if (v_context->frame != last_frame_num) {
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
278 //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);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
279 last_frame_num = v_context->frame;
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
280
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
281 if (!headless) {
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
282 break_on_sync |= wait_render_frame(v_context, frame_limit);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
283 } else if(exit_after){
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
284 --exit_after;
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
285 if (!exit_after) {
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
286 exit(0);
505
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 501
diff changeset
287 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
288 }
832
0433fdd9ba66 Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents: 819
diff changeset
289
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
290 vdp_adjust_cycles(v_context, mclks);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
291 io_adjust_cycles(gen->ports, context->current_cycle, mclks);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
292 io_adjust_cycles(gen->ports+1, context->current_cycle, mclks);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
293 io_adjust_cycles(gen->ports+2, context->current_cycle, mclks);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
294 context->current_cycle -= mclks;
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
295 z80_adjust_cycles(z_context, mclks);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
296 gen->ym->current_cycle -= mclks;
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
297 gen->psg->cycles -= mclks;
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
298 if (gen->ym->write_cycle != CYCLE_NEVER) {
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
299 gen->ym->write_cycle = gen->ym->write_cycle >= mclks ? gen->ym->write_cycle - mclks : 0;
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
300 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
301 }
700
72ab94527a8a Tiny cleanup
Michael Pavone <pavone@retrodev.com>
parents: 697
diff changeset
302 gen->frame_end = vdp_cycles_to_frame_end(v_context);
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
303 context->sync_cycle = gen->frame_end;
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
304 //printf("Set sync cycle to: %d @ %d, vcounter: %d, hslot: %d\n", context->sync_cycle, context->current_cycle, v_context->vcounter, v_context->hslot);
317
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
305 if (context->int_ack) {
718
eaba6789f316 Update vscroll latch implementation to be more in line with what Eke-Eke has observed. Revert the change to vdp_cycles_to_line because it breaks hints on line 0. H-Int timing is still a little messed up, but the previous change made things worse.
Michael Pavone <pavone@retrodev.com>
parents: 717
diff changeset
306 //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);
953
08346262990b Remove the int number argument to vdp_int_ack since it is no longer used
Michael Pavone <pavone@retrodev.com>
parents: 951
diff changeset
307 vdp_int_ack(v_context);
317
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
308 context->int_ack = 0;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
309 }
961
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
310 if (!address && (break_on_sync || gen->save_state)) {
721
20be7d01e312 Better handling of savestate and debug break events with "uncooperative" games/demos
Michael Pavone <pavone@retrodev.com>
parents: 719
diff changeset
311 context->sync_cycle = context->current_cycle + 1;
20be7d01e312 Better handling of savestate and debug break events with "uncooperative" games/demos
Michael Pavone <pavone@retrodev.com>
parents: 719
diff changeset
312 }
186
02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write
Mike Pavone <pavone@retrodev.com>
parents: 185
diff changeset
313 adjust_int_cycle(context, v_context);
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
314 if (address) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
315 if (break_on_sync) {
695
e1345921e481 Indentation fixup
Michael Pavone <pavone@retrodev.com>
parents: 693
diff changeset
316 break_on_sync = 0;
e1345921e481 Indentation fixup
Michael Pavone <pavone@retrodev.com>
parents: 693
diff changeset
317 debugger(context, address);
e1345921e481 Indentation fixup
Michael Pavone <pavone@retrodev.com>
parents: 693
diff changeset
318 }
961
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
319 if (gen->save_state && (z_context->pc || (!z_context->reset && !z_context->busreq))) {
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
320 uint8_t slot = gen->save_state - 1;
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
321 gen->save_state = 0;
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
322 //advance Z80 core to the start of an instruction
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
323 while (!z_context->pc)
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
324 {
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
325 sync_z80(z_context, z_context->current_cycle + MCLKS_PER_Z80);
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
326 }
961
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
327 char *save_path;
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
328 if (slot == QUICK_SAVE_SLOT) {
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
329 save_path = save_state_path;
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
330 } else {
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
331 char slotname[] = "slot_0.gst";
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
332 slotname[5] = '0' + slot;
1008
51885857c019 Removed assumptions that path separators are Unix style outside of Unix-only verions of functions
Michael Pavone <pavone@retrodev.com>
parents: 1002
diff changeset
333 char const *parts[] = {gen->save_dir, PATH_SEP, slotname};
961
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
334 save_path = alloc_concat_m(3, parts);
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
335 }
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
336 save_gst(gen, save_path, address);
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
337 printf("Saved state to %s\n", save_path);
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
338 if (slot != QUICK_SAVE_SLOT) {
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
339 free(save_path);
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
340 }
750995b587a0 Save State menu option is now fully functional. Load state sort of works, but is mostly broken.
Michael Pavone <pavone@retrodev.com>
parents: 957
diff changeset
341 } else if(gen->save_state) {
736
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
342 context->sync_cycle = context->current_cycle + 1;
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
343 }
198
209a37eed3e7 Add support for breaking into the debugger while game is running
Mike Pavone <pavone@retrodev.com>
parents: 197
diff changeset
344 }
978
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
345 #ifdef REFRESH_EMULATION
889
2d1122123fe9 Approximation of refresh wait states
Michael Pavone <pavone@retrodev.com>
parents: 885
diff changeset
346 last_sync_cycle = context->current_cycle;
978
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
347 #endif
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
348 return context;
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
349 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
350
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
351 m68k_context * vdp_port_write(uint32_t vdp_port, m68k_context * context, uint16_t value)
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
352 {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
353 if (vdp_port & 0x2700E0) {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
354 fatal_error("machine freeze due to write to address %X\n", 0xC00000 | vdp_port);
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
355 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
356 vdp_port &= 0x1F;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
357 //printf("vdp_port write: %X, value: %X, cycle: %d\n", vdp_port, value, context->current_cycle);
198
209a37eed3e7 Add support for breaking into the debugger while game is running
Mike Pavone <pavone@retrodev.com>
parents: 197
diff changeset
358 sync_components(context, 0);
508
b976c6d6e5fb Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff.
Michael Pavone <pavone@retrodev.com>
parents: 505
diff changeset
359 genesis_context * gen = context->system;
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
360 vdp_context *v_context = gen->vdp;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
361 if (vdp_port < 0x10) {
149
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
362 int blocked;
345
29d2ca563499 Don't sync the 68K clock to the VDP clock unless the 68K had to wait for the VDP. This unfortunately breaks the direct color DMA demos, but should be more correct overall.
Mike Pavone <pavone@retrodev.com>
parents: 344
diff changeset
363 uint32_t before_cycle = v_context->cycles;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
364 if (vdp_port < 4) {
832
0433fdd9ba66 Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents: 819
diff changeset
365
149
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
366 while (vdp_data_port_write(v_context, value) < 0) {
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
367 while(v_context->flags & FLAG_DMA_RUN) {
696
0b2242bbc84a Added config option to allow specifying a max sync cycle smaller than the end of frame
Michael Pavone <pavone@retrodev.com>
parents: 695
diff changeset
368 vdp_run_dma_done(v_context, gen->frame_end);
0b2242bbc84a Added config option to allow specifying a max sync cycle smaller than the end of frame
Michael Pavone <pavone@retrodev.com>
parents: 695
diff changeset
369 if (v_context->cycles >= gen->frame_end) {
997
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
370 uint32_t cycle_diff = v_context->cycles - context->current_cycle;
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
371 uint32_t m68k_cycle_diff = (cycle_diff / MCLKS_PER_68K) * MCLKS_PER_68K;
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
372 if (m68k_cycle_diff < cycle_diff) {
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
373 m68k_cycle_diff += MCLKS_PER_68K;
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
374 }
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
375 context->current_cycle += m68k_cycle_diff;
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
376 gen->bus_busy = 1;
534
c641006da28e Properly sync hardware when frame end is reached during DMA
Mike Pavone <pavone@retrodev.com>
parents: 531
diff changeset
377 sync_components(context, 0);
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
378 gen->bus_busy = 0;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
379 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
380 }
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
381 //context->current_cycle = v_context->cycles;
149
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
382 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
383 } else if(vdp_port < 8) {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
384 blocked = vdp_control_port_write(v_context, value);
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
385 if (blocked) {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
386 while (blocked) {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
387 while(v_context->flags & FLAG_DMA_RUN) {
696
0b2242bbc84a Added config option to allow specifying a max sync cycle smaller than the end of frame
Michael Pavone <pavone@retrodev.com>
parents: 695
diff changeset
388 vdp_run_dma_done(v_context, gen->frame_end);
0b2242bbc84a Added config option to allow specifying a max sync cycle smaller than the end of frame
Michael Pavone <pavone@retrodev.com>
parents: 695
diff changeset
389 if (v_context->cycles >= gen->frame_end) {
997
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
390 uint32_t cycle_diff = v_context->cycles - context->current_cycle;
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
391 uint32_t m68k_cycle_diff = (cycle_diff / MCLKS_PER_68K) * MCLKS_PER_68K;
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
392 if (m68k_cycle_diff < cycle_diff) {
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
393 m68k_cycle_diff += MCLKS_PER_68K;
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
394 }
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
395 context->current_cycle += m68k_cycle_diff;
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
396 gen->bus_busy = 1;
534
c641006da28e Properly sync hardware when frame end is reached during DMA
Mike Pavone <pavone@retrodev.com>
parents: 531
diff changeset
397 sync_components(context, 0);
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
398 gen->bus_busy = 0;
149
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
399 }
997
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
400 if (!(v_context->flags & FLAG_DMA_RUN)) {
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
401 //two more slots of delay are needed to kill sufficient sprite capacity in Overdrive
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
402 //TODO: Measure exact value with logic analyzer
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
403 vdp_run_context(v_context, v_context->cycles + 1);
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
404 vdp_run_context(v_context, v_context->cycles + 1);
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
405 }
149
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
406 }
997
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
407
149
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
408 if (blocked < 0) {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
409 blocked = vdp_control_port_write(v_context, value);
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
410 } else {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
411 blocked = 0;
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
412 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
413 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
414 } else {
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
415 context->sync_cycle = gen->frame_end = vdp_cycles_to_frame_end(v_context);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
416 //printf("Set sync cycle to: %d @ %d, vcounter: %d, hslot: %d\n", context->sync_cycle, context->current_cycle, v_context->vcounter, v_context->hslot);
186
02e25abe2dcd Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write
Mike Pavone <pavone@retrodev.com>
parents: 185
diff changeset
417 adjust_int_cycle(context, v_context);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
418 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
419 } else {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
420 fatal_error("Illegal write to HV Counter port %X\n", vdp_port);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
421 }
345
29d2ca563499 Don't sync the 68K clock to the VDP clock unless the 68K had to wait for the VDP. This unfortunately breaks the direct color DMA demos, but should be more correct overall.
Mike Pavone <pavone@retrodev.com>
parents: 344
diff changeset
422 if (v_context->cycles != before_cycle) {
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
423 //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);
997
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
424 uint32_t cycle_diff = v_context->cycles - context->current_cycle;
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
425 uint32_t m68k_cycle_diff = (cycle_diff / MCLKS_PER_68K) * MCLKS_PER_68K;
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
426 if (m68k_cycle_diff < cycle_diff) {
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
427 m68k_cycle_diff += MCLKS_PER_68K;
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
428 }
560da2e455c2 YOUR EMULATOR SUX is dead. Needs logic analyzer testing to check exact delay though.
Michael Pavone <pavone@retrodev.com>
parents: 996
diff changeset
429 context->current_cycle += m68k_cycle_diff;
978
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
430 #ifdef REFRESH_EMULATION
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
431 last_sync_cycle = context->current_cycle;
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
432 #endif
680
4996369f1463 Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents: 679
diff changeset
433 //Lock the Z80 out of the bus until the VDP access is complete
4996369f1463 Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents: 679
diff changeset
434 gen->bus_busy = 1;
4996369f1463 Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents: 679
diff changeset
435 sync_z80(gen->z80, v_context->cycles);
4996369f1463 Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents: 679
diff changeset
436 gen->bus_busy = 0;
345
29d2ca563499 Don't sync the 68K clock to the VDP clock unless the 68K had to wait for the VDP. This unfortunately breaks the direct color DMA demos, but should be more correct overall.
Mike Pavone <pavone@retrodev.com>
parents: 344
diff changeset
437 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
438 } else if (vdp_port < 0x18) {
354
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents: 351
diff changeset
439 psg_write(gen->psg, value);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
440 } else {
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
441 //TODO: Implement undocumented test register(s)
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
442 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
443 return context;
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
444 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
445
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
446 m68k_context * vdp_port_write_b(uint32_t vdp_port, m68k_context * context, uint8_t value)
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
447 {
357
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 356
diff changeset
448 return vdp_port_write(vdp_port, context, vdp_port < 0x10 ? value | value << 8 : ((vdp_port & 1) ? value : 0));
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 356
diff changeset
449 }
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 356
diff changeset
450
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
451 void * z80_vdp_port_write(uint32_t vdp_port, void * vcontext, uint8_t value)
357
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 356
diff changeset
452 {
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
453 z80_context * context = vcontext;
357
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 356
diff changeset
454 genesis_context * gen = context->system;
660
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
455 vdp_port &= 0xFF;
358
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
456 if (vdp_port & 0xE0) {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
457 fatal_error("machine freeze due to write to Z80 address %X\n", 0x7F00 | vdp_port);
358
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
458 }
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
459 if (vdp_port < 0x10) {
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
460 //These probably won't currently interact well with the 68K accessing the VDP
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
461 vdp_run_context(gen->vdp, context->current_cycle);
358
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
462 if (vdp_port < 4) {
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
463 vdp_data_port_write(gen->vdp, value << 8 | value);
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
464 } else if (vdp_port < 8) {
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
465 vdp_control_port_write(gen->vdp, value << 8 | value);
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
466 } else {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
467 fatal_error("Illegal write to HV Counter port %X\n", vdp_port);
358
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
468 }
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
469 } else if (vdp_port < 0x18) {
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
470 sync_sound(gen, context->current_cycle);
358
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
471 psg_write(gen->psg, value);
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
472 } else {
470
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents: 469
diff changeset
473 vdp_test_port_write(gen->vdp, value);
358
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
474 }
357
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 356
diff changeset
475 return context;
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
476 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
477
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
478 uint16_t vdp_port_read(uint32_t vdp_port, m68k_context * context)
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
479 {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
480 if (vdp_port & 0x2700E0) {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
481 fatal_error("machine freeze due to read from address %X\n", 0xC00000 | vdp_port);
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
482 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
483 vdp_port &= 0x1F;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
484 uint16_t value;
198
209a37eed3e7 Add support for breaking into the debugger while game is running
Mike Pavone <pavone@retrodev.com>
parents: 197
diff changeset
485 sync_components(context, 0);
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
486 genesis_context *gen = context->system;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
487 vdp_context * v_context = gen->vdp;
470
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents: 469
diff changeset
488 uint32_t before_cycle = v_context->cycles;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
489 if (vdp_port < 0x10) {
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
490 if (vdp_port < 4) {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
491 value = vdp_data_port_read(v_context);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
492 } else if(vdp_port < 8) {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
493 value = vdp_control_port_read(v_context);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
494 } else {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
495 value = vdp_hv_counter_read(v_context);
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
496 //printf("HV Counter: %X at cycle %d\n", value, v_context->cycles);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
497 }
470
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents: 469
diff changeset
498 } else if (vdp_port < 0x18){
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
499 fatal_error("Illegal read from PSG port %X\n", vdp_port);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
500 } else {
470
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents: 469
diff changeset
501 value = vdp_test_port_read(v_context);
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents: 469
diff changeset
502 }
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents: 469
diff changeset
503 if (v_context->cycles != before_cycle) {
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
504 //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);
978
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
505 context->current_cycle = v_context->cycles;
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
506 #ifdef REFRES_EMULATION
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
507 last_sync_cycle = context->current_cycle;
34b811ea1e7c Disable refresh emulation with some ifdefs for now as it currently is not accurate enough to actually improve overall accuracy/compatibility and in fact makes things that work right on real hardware break
Michael Pavone <pavone@retrodev.com>
parents: 975
diff changeset
508 #endif
680
4996369f1463 Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents: 679
diff changeset
509 //Lock the Z80 out of the bus until the VDP access is complete
4996369f1463 Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents: 679
diff changeset
510 genesis_context *gen = context->system;
4996369f1463 Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents: 679
diff changeset
511 gen->bus_busy = 1;
4996369f1463 Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents: 679
diff changeset
512 sync_z80(gen->z80, v_context->cycles);
4996369f1463 Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents: 679
diff changeset
513 gen->bus_busy = 0;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
514 }
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
515 return value;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
516 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
517
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
518 uint8_t vdp_port_read_b(uint32_t vdp_port, m68k_context * context)
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
519 {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
520 uint16_t value = vdp_port_read(vdp_port, context);
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
521 if (vdp_port & 1) {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
522 return value;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
523 } else {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
524 return value >> 8;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
525 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
526 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
527
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
528 uint8_t z80_vdp_port_read(uint32_t vdp_port, void * vcontext)
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
529 {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
530 z80_context * context = vcontext;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
531 if (vdp_port & 0xE0) {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
532 fatal_error("machine freeze due to read from Z80 address %X\n", 0x7F00 | vdp_port);
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
533 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
534 genesis_context * gen = context->system;
736
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
535 //VDP access goes over the 68K bus like a bank area access
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
536 //typical delay from bus arbitration
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
537 context->current_cycle += 3 * MCLKS_PER_Z80;
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
538 //TODO: add cycle for an access right after a previous one
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
539 //TODO: Below cycle time is an estimate based on the time between 68K !BG goes low and Z80 !MREQ goes high
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
540 // Needs a new logic analyzer capture to get the actual delay on the 68K side
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
541 gen->m68k->current_cycle += 8 * MCLKS_PER_68K;
832
0433fdd9ba66 Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents: 819
diff changeset
542
0433fdd9ba66 Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents: 819
diff changeset
543
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
544 vdp_port &= 0x1F;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
545 uint16_t ret;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
546 if (vdp_port < 0x10) {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
547 //These probably won't currently interact well with the 68K accessing the VDP
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
548 vdp_run_context(gen->vdp, context->current_cycle);
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
549 if (vdp_port < 4) {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
550 ret = vdp_data_port_read(gen->vdp);
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
551 } else if (vdp_port < 8) {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
552 ret = vdp_control_port_read(gen->vdp);
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
553 } else {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
554 fatal_error("Illegal write to HV Counter port %X\n", vdp_port);
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
555 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
556 } else {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
557 //TODO: Figure out the correct value today
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
558 ret = 0xFFFF;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
559 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
560 return vdp_port & 1 ? ret : ret >> 8;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
561 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
562
279
6be6056735a9 Fix native address lookup in bannked memory area
Mike Pavone <pavone@retrodev.com>
parents: 276
diff changeset
563 uint32_t zram_counter = 0;
6be6056735a9 Fix native address lookup in bannked memory area
Mike Pavone <pavone@retrodev.com>
parents: 276
diff changeset
564
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
565 m68k_context * io_write(uint32_t location, m68k_context * context, uint8_t value)
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
566 {
288
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
567 genesis_context * gen = context->system;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
568 if (location < 0x10000) {
844
74e161fe7d39 Small tweaks to timing of 68K/Z80 interactions based on latest tests
Michael Pavone <pavone@retrodev.com>
parents: 837
diff changeset
569 //Access to Z80 memory incurs a one 68K cycle wait state
74e161fe7d39 Small tweaks to timing of 68K/Z80 interactions based on latest tests
Michael Pavone <pavone@retrodev.com>
parents: 837
diff changeset
570 context->current_cycle += MCLKS_PER_68K;
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
571 if (!z80_enabled || z80_get_busack(gen->z80, context->current_cycle)) {
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
572 location &= 0x7FFF;
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
573 if (location < 0x4000) {
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
574 z80_ram[location & 0x1FFF] = value;
565
9324f721efa6 Add a separate flag/define for disabling the Z80 at compile time to ease refactoring
Michael Pavone <pavone@retrodev.com>
parents: 558
diff changeset
575 #ifndef NO_Z80
288
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
576 z80_handle_code_write(location & 0x1FFF, gen->z80);
548
a3afee2271ce Initial work on the x86-32 target
Michael Pavone <pavone@retrodev.com>
parents: 534
diff changeset
577 #endif
288
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
578 } else if (location < 0x6000) {
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
579 sync_sound(gen, context->current_cycle);
288
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
580 if (location & 1) {
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
581 ym_data_write(gen->ym, value);
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
582 } else if(location & 2) {
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
583 ym_address_write_part2(gen->ym, value);
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
584 } else {
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
585 ym_address_write_part1(gen->ym, value);
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
586 }
405
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again
Mike Pavone <pavone@retrodev.com>
parents: 404
diff changeset
587 } else if (location == 0x6000) {
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again
Mike Pavone <pavone@retrodev.com>
parents: 404
diff changeset
588 gen->z80->bank_reg = (gen->z80->bank_reg >> 1 | value << 8) & 0x1FF;
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again
Mike Pavone <pavone@retrodev.com>
parents: 404
diff changeset
589 if (gen->z80->bank_reg < 0x80) {
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again
Mike Pavone <pavone@retrodev.com>
parents: 404
diff changeset
590 gen->z80->mem_pointers[1] = (gen->z80->bank_reg << 15) + ((char *)gen->z80->mem_pointers[2]);
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again
Mike Pavone <pavone@retrodev.com>
parents: 404
diff changeset
591 } else {
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again
Mike Pavone <pavone@retrodev.com>
parents: 404
diff changeset
592 gen->z80->mem_pointers[1] = NULL;
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again
Mike Pavone <pavone@retrodev.com>
parents: 404
diff changeset
593 }
395
0b5f93358a93 Add debugger command for saving Z80 RAM to a file
Mike Pavone <pavone@retrodev.com>
parents: 392
diff changeset
594 } else {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
595 fatal_error("68K write to unhandled Z80 address %X\n", location);
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
596 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
597 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
598 } else {
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
599 location &= 0x1FFF;
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
600 if (location < 0x100) {
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
601 switch(location/2)
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
602 {
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
603 case 0x1:
421
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
604 io_data_write(gen->ports, value, context->current_cycle);
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
605 break;
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
606 case 0x2:
421
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
607 io_data_write(gen->ports+1, value, context->current_cycle);
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
608 break;
421
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
609 case 0x3:
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
610 io_data_write(gen->ports+2, value, context->current_cycle);
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
611 break;
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
612 case 0x4:
421
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
613 gen->ports[0].control = value;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
614 break;
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
615 case 0x5:
421
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
616 gen->ports[1].control = value;
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
617 break;
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
618 case 0x6:
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
619 gen->ports[2].control = value;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
620 break;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
621 }
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
622 } else {
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
623 if (location == 0x1100) {
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
624 if (value & 1) {
271
969ee17471c5 Protect debug prints for busreq/reset regs with appropriate macros
Mike Pavone <pavone@retrodev.com>
parents: 268
diff changeset
625 dputs("bus requesting Z80");
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
626 if (z80_enabled) {
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
627 z80_assert_busreq(gen->z80, context->current_cycle);
677
687c1dd3bcb9 Fake busack when Z80 is disabled
Michael Pavone <pavone@retrodev.com>
parents: 672
diff changeset
628 } else {
687c1dd3bcb9 Fake busack when Z80 is disabled
Michael Pavone <pavone@retrodev.com>
parents: 672
diff changeset
629 gen->z80->busack = 1;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
630 }
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
631 } else {
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
632 if (gen->z80->busreq) {
271
969ee17471c5 Protect debug prints for busreq/reset regs with appropriate macros
Mike Pavone <pavone@retrodev.com>
parents: 268
diff changeset
633 dputs("releasing z80 bus");
280
9ee64039ddeb Fix bank register update
Mike Pavone <pavone@retrodev.com>
parents: 279
diff changeset
634 #ifdef DO_DEBUG_PRINT
279
6be6056735a9 Fix native address lookup in bannked memory area
Mike Pavone <pavone@retrodev.com>
parents: 276
diff changeset
635 char fname[20];
6be6056735a9 Fix native address lookup in bannked memory area
Mike Pavone <pavone@retrodev.com>
parents: 276
diff changeset
636 sprintf(fname, "zram-%d", zram_counter++);
6be6056735a9 Fix native address lookup in bannked memory area
Mike Pavone <pavone@retrodev.com>
parents: 276
diff changeset
637 FILE * f = fopen(fname, "wb");
6be6056735a9 Fix native address lookup in bannked memory area
Mike Pavone <pavone@retrodev.com>
parents: 276
diff changeset
638 fwrite(z80_ram, 1, sizeof(z80_ram), f);
6be6056735a9 Fix native address lookup in bannked memory area
Mike Pavone <pavone@retrodev.com>
parents: 276
diff changeset
639 fclose(f);
280
9ee64039ddeb Fix bank register update
Mike Pavone <pavone@retrodev.com>
parents: 279
diff changeset
640 #endif
260
625f8e4d5fd2 Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 215
diff changeset
641 }
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
642 if (z80_enabled) {
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
643 z80_clear_busreq(gen->z80, context->current_cycle);
677
687c1dd3bcb9 Fake busack when Z80 is disabled
Michael Pavone <pavone@retrodev.com>
parents: 672
diff changeset
644 } else {
687c1dd3bcb9 Fake busack when Z80 is disabled
Michael Pavone <pavone@retrodev.com>
parents: 672
diff changeset
645 gen->z80->busack = 0;
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
646 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
647 }
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
648 } else if (location == 0x1200) {
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
649 sync_z80(gen->z80, context->current_cycle);
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
650 if (value & 1) {
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
651 if (z80_enabled) {
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
652 z80_clear_reset(gen->z80, context->current_cycle);
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
653 } else {
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
654 gen->z80->reset = 0;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
655 }
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
656 } else {
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
657 if (z80_enabled) {
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
658 z80_assert_reset(gen->z80, context->current_cycle);
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
659 } else {
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
660 gen->z80->reset = 1;
260
625f8e4d5fd2 Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 215
diff changeset
661 }
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
662 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
663 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
664 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
665 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
666 return context;
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
667 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
668
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
669 m68k_context * io_write_w(uint32_t location, m68k_context * context, uint16_t value)
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
670 {
404
88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents: 402
diff changeset
671 if (location < 0x10000 || (location & 0x1FFF) >= 0x100) {
88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents: 402
diff changeset
672 return io_write(location, context, value >> 8);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
673 } else {
404
88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents: 402
diff changeset
674 return io_write(location, context, value);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
675 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
676 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
677
130
0bdbffa9fe90 Make version register return correct value for USA
Mike Pavone <pavone@retrodev.com>
parents: 115
diff changeset
678 #define USA 0x80
0bdbffa9fe90 Make version register return correct value for USA
Mike Pavone <pavone@retrodev.com>
parents: 115
diff changeset
679 #define JAP 0x00
0bdbffa9fe90 Make version register return correct value for USA
Mike Pavone <pavone@retrodev.com>
parents: 115
diff changeset
680 #define EUR 0xC0
0bdbffa9fe90 Make version register return correct value for USA
Mike Pavone <pavone@retrodev.com>
parents: 115
diff changeset
681 #define NO_DISK 0x20
0bdbffa9fe90 Make version register return correct value for USA
Mike Pavone <pavone@retrodev.com>
parents: 115
diff changeset
682 uint8_t version_reg = NO_DISK | USA;
0bdbffa9fe90 Make version register return correct value for USA
Mike Pavone <pavone@retrodev.com>
parents: 115
diff changeset
683
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
684 uint8_t io_read(uint32_t location, m68k_context * context)
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
685 {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
686 uint8_t value;
288
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
687 genesis_context *gen = context->system;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
688 if (location < 0x10000) {
844
74e161fe7d39 Small tweaks to timing of 68K/Z80 interactions based on latest tests
Michael Pavone <pavone@retrodev.com>
parents: 837
diff changeset
689 //Access to Z80 memory incurs a one 68K cycle wait state
74e161fe7d39 Small tweaks to timing of 68K/Z80 interactions based on latest tests
Michael Pavone <pavone@retrodev.com>
parents: 837
diff changeset
690 context->current_cycle += MCLKS_PER_68K;
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
691 if (!z80_enabled || z80_get_busack(gen->z80, context->current_cycle)) {
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
692 location &= 0x7FFF;
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
693 if (location < 0x4000) {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
694 value = z80_ram[location & 0x1FFF];
288
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
695 } else if (location < 0x6000) {
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
696 sync_sound(gen, context->current_cycle);
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
697 value = ym_read_status(gen->ym);
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
698 } else {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
699 value = 0xFF;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
700 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
701 } else {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
702 value = 0xFF;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
703 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
704 } else {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
705 location &= 0x1FFF;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
706 if (location < 0x100) {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
707 switch(location/2)
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
708 {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
709 case 0x0:
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
710 //version bits should be 0 for now since we're not emulating TMSS
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
711 value = version_reg;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
712 break;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
713 case 0x1:
421
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
714 value = io_data_read(gen->ports, context->current_cycle);
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
715 break;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
716 case 0x2:
421
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
717 value = io_data_read(gen->ports+1, context->current_cycle);
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
718 break;
421
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
719 case 0x3:
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
720 value = io_data_read(gen->ports+2, context->current_cycle);
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
721 break;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
722 case 0x4:
421
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
723 value = gen->ports[0].control;
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
724 break;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
725 case 0x5:
421
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
726 value = gen->ports[1].control;
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
727 break;
421
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
728 case 0x6:
d0cacb4ade0b Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents: 418
diff changeset
729 value = gen->ports[2].control;
405
042c4ba4a838 Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again
Mike Pavone <pavone@retrodev.com>
parents: 404
diff changeset
730 break;
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
731 default:
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
732 value = 0xFF;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
733 }
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
734 } else {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
735 if (location == 0x1100) {
677
687c1dd3bcb9 Fake busack when Z80 is disabled
Michael Pavone <pavone@retrodev.com>
parents: 672
diff changeset
736 value = z80_enabled ? !z80_get_busack(gen->z80, context->current_cycle) : !gen->z80->busack;
981
902c53d9c16f Half assed, prefetch based open bus value emulation. Gets BlastEm up to 119/122 in VDP FIFO Testing
Michael Pavone <pavone@retrodev.com>
parents: 978
diff changeset
737 value |= (get_open_bus_value() >> 8) & 0xFE;
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
738 dprintf("Byte read of BUSREQ returned %d @ %d (reset: %d)\n", value, context->current_cycle, gen->z80->reset);
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
739 } else if (location == 0x1200) {
668
5439ae7946ca Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
740 value = !gen->z80->reset;
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
741 } else {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
742 value = 0xFF;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
743 printf("Byte read of unknown IO location: %X\n", location);
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
744 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
745 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
746 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
747 return value;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
748 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
749
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
750 uint16_t io_read_w(uint32_t location, m68k_context * context)
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
751 {
404
88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents: 402
diff changeset
752 uint16_t value = io_read(location, context);
88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents: 402
diff changeset
753 if (location < 0x10000 || (location & 0x1FFF) < 0x100) {
88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents: 402
diff changeset
754 value = value | (value << 8);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
755 } else {
404
88fa2ad53e64 Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents: 402
diff changeset
756 value <<= 8;
981
902c53d9c16f Half assed, prefetch based open bus value emulation. Gets BlastEm up to 119/122 in VDP FIFO Testing
Michael Pavone <pavone@retrodev.com>
parents: 978
diff changeset
757 value |= get_open_bus_value() & 0xFF;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
758 }
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
759 return value;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
760 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
761
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
762 void * z80_write_ym(uint32_t location, void * vcontext, uint8_t value)
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
763 {
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
764 z80_context * context = vcontext;
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
765 genesis_context * gen = context->system;
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
766 sync_sound(gen, context->current_cycle);
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
767 if (location & 1) {
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
768 ym_data_write(gen->ym, value);
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
769 } else if (location & 2) {
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
770 ym_address_write_part2(gen->ym, value);
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
771 } else {
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
772 ym_address_write_part1(gen->ym, value);
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
773 }
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
774 return context;
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
775 }
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
776
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
777 uint8_t z80_read_ym(uint32_t location, void * vcontext)
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
778 {
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
779 z80_context * context = vcontext;
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
780 genesis_context * gen = context->system;
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
781 sync_sound(gen, context->current_cycle);
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
782 return ym_read_status(gen->ym);
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
783 }
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
784
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
785 uint8_t z80_read_bank(uint32_t location, void * vcontext)
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
786 {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
787 z80_context * context = vcontext;
672
18ef3b61e70b Restore emulation of Z80 being locked out of the 68K bus during DMA and the like
Michael Pavone <pavone@retrodev.com>
parents: 671
diff changeset
788 genesis_context *gen = context->system;
18ef3b61e70b Restore emulation of Z80 being locked out of the 68K bus during DMA and the like
Michael Pavone <pavone@retrodev.com>
parents: 671
diff changeset
789 if (gen->bus_busy) {
18ef3b61e70b Restore emulation of Z80 being locked out of the 68K bus during DMA and the like
Michael Pavone <pavone@retrodev.com>
parents: 671
diff changeset
790 context->current_cycle = context->sync_cycle;
18ef3b61e70b Restore emulation of Z80 being locked out of the 68K bus during DMA and the like
Michael Pavone <pavone@retrodev.com>
parents: 671
diff changeset
791 }
660
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
792 //typical delay from bus arbitration
671
8ad39a2b0bce Fix bank area access delay for master clock change
Michael Pavone <pavone@retrodev.com>
parents: 670
diff changeset
793 context->current_cycle += 3 * MCLKS_PER_Z80;
672
18ef3b61e70b Restore emulation of Z80 being locked out of the 68K bus during DMA and the like
Michael Pavone <pavone@retrodev.com>
parents: 671
diff changeset
794 //TODO: add cycle for an access right after a previous one
736
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
795 //TODO: Below cycle time is an estimate based on the time between 68K !BG goes low and Z80 !MREQ goes high
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
796 // Needs a new logic analyzer capture to get the actual delay on the 68K side
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
797 gen->m68k->current_cycle += 8 * MCLKS_PER_68K;
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
798
660
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
799 location &= 0x7FFF;
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
800 if (context->mem_pointers[1]) {
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
801 return context->mem_pointers[1][location ^ 1];
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
802 }
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
803 uint32_t address = context->bank_reg << 15 | location;
616
649db9397fa1 Add support for Z80 access to VDP via bank area
Michael Pavone <pavone@retrodev.com>
parents: 606
diff changeset
804 if (address >= 0xC00000 && address < 0xE00000) {
649db9397fa1 Add support for Z80 access to VDP via bank area
Michael Pavone <pavone@retrodev.com>
parents: 606
diff changeset
805 return z80_vdp_port_read(location & 0xFF, context);
649db9397fa1 Add support for Z80 access to VDP via bank area
Michael Pavone <pavone@retrodev.com>
parents: 606
diff changeset
806 } else {
660
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
807 fprintf(stderr, "Unhandled read by Z80 from address %X through banked memory area (%X)\n", address, context->bank_reg << 15);
616
649db9397fa1 Add support for Z80 access to VDP via bank area
Michael Pavone <pavone@retrodev.com>
parents: 606
diff changeset
808 }
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
809 return 0;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
810 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
811
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
812 void *z80_write_bank(uint32_t location, void * vcontext, uint8_t value)
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
813 {
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
814 z80_context * context = vcontext;
672
18ef3b61e70b Restore emulation of Z80 being locked out of the 68K bus during DMA and the like
Michael Pavone <pavone@retrodev.com>
parents: 671
diff changeset
815 genesis_context *gen = context->system;
18ef3b61e70b Restore emulation of Z80 being locked out of the 68K bus during DMA and the like
Michael Pavone <pavone@retrodev.com>
parents: 671
diff changeset
816 if (gen->bus_busy) {
18ef3b61e70b Restore emulation of Z80 being locked out of the 68K bus during DMA and the like
Michael Pavone <pavone@retrodev.com>
parents: 671
diff changeset
817 context->current_cycle = context->sync_cycle;
18ef3b61e70b Restore emulation of Z80 being locked out of the 68K bus during DMA and the like
Michael Pavone <pavone@retrodev.com>
parents: 671
diff changeset
818 }
660
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
819 //typical delay from bus arbitration
671
8ad39a2b0bce Fix bank area access delay for master clock change
Michael Pavone <pavone@retrodev.com>
parents: 670
diff changeset
820 context->current_cycle += 3 * MCLKS_PER_Z80;
672
18ef3b61e70b Restore emulation of Z80 being locked out of the 68K bus during DMA and the like
Michael Pavone <pavone@retrodev.com>
parents: 671
diff changeset
821 //TODO: add cycle for an access right after a previous one
736
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
822 //TODO: Below cycle time is an estimate based on the time between 68K !BG goes low and Z80 !MREQ goes high
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
823 // Needs a new logic analyzer capture to get the actual delay on the 68K side
535e97bad27f Implement cycles being stolen from 68K when the Z80 accesses the bank area or VDP/PSG. Small fix to code that tries to get system into a consistent state for a savestate
Michael Pavone <pavone@retrodev.com>
parents: 721
diff changeset
824 gen->m68k->current_cycle += 8 * MCLKS_PER_68K;
672
18ef3b61e70b Restore emulation of Z80 being locked out of the 68K bus during DMA and the like
Michael Pavone <pavone@retrodev.com>
parents: 671
diff changeset
825
660
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
826 location &= 0x7FFF;
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
827 uint32_t address = context->bank_reg << 15 | location;
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
828 if (address >= 0xE00000) {
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
829 address &= 0xFFFF;
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
830 ((uint8_t *)ram)[address ^ 1] = value;
616
649db9397fa1 Add support for Z80 access to VDP via bank area
Michael Pavone <pavone@retrodev.com>
parents: 606
diff changeset
831 } else if (address >= 0xC00000) {
649db9397fa1 Add support for Z80 access to VDP via bank area
Michael Pavone <pavone@retrodev.com>
parents: 606
diff changeset
832 z80_vdp_port_write(location & 0xFF, context, value);
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
833 } else {
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
834 fprintf(stderr, "Unhandled write by Z80 to address %X through banked memory area\n", address);
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
835 }
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
836 return context;
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
837 }
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
838
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
839 void *z80_write_bank_reg(uint32_t location, void * vcontext, uint8_t value)
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
840 {
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
841 z80_context * context = vcontext;
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
842
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
843 context->bank_reg = (context->bank_reg >> 1 | value << 8) & 0x1FF;
777
79b10b421d3c Support large flat-mapped ROMs like Bad Apple or that Mortal Kombat hack
Michael Pavone <pavone@retrodev.com>
parents: 776
diff changeset
844 if (context->bank_reg < 0x100) {
660
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
845 genesis_context *gen = context->system;
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
846 context->mem_pointers[1] = get_native_pointer(context->bank_reg << 15, (void **)gen->m68k->mem_pointers, &gen->m68k->options->gen);
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
847 } else {
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
848 context->mem_pointers[1] = NULL;
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
849 }
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents: 661
diff changeset
850
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
851 return context;
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
852 }
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
853
483
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
854 void set_speed_percent(genesis_context * context, uint32_t percent)
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
855 {
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
856 uint32_t old_clock = context->master_clock;
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
857 context->master_clock = ((uint64_t)context->normal_clock * (uint64_t)percent) / 100;
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
858 while (context->ym->current_cycle != context->psg->cycles) {
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
859 sync_sound(context, context->psg->cycles + MCLKS_PER_PSG);
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
860 }
483
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
861 ym_adjust_master_clock(context->ym, context->master_clock);
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
862 psg_adjust_master_clock(context->psg, context->master_clock);
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
863 }
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents: 482
diff changeset
864
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
865 char * save_filename;
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
866 genesis_context *genesis;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
867 genesis_context *menu_context;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
868 genesis_context *game_context;
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
869 void persist_save()
351
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
870 {
1009
883fe974f72b Fix bug in which save RAM/EEPROM was not persisted correctly if the emulator is exited via the menu rather than the X button in the title bar
Michael Pavone <pavone@retrodev.com>
parents: 1008
diff changeset
871 if (!game_context) {
883fe974f72b Fix bug in which save RAM/EEPROM was not persisted correctly if the emulator is exited via the menu rather than the X button in the title bar
Michael Pavone <pavone@retrodev.com>
parents: 1008
diff changeset
872 return;
883fe974f72b Fix bug in which save RAM/EEPROM was not persisted correctly if the emulator is exited via the menu rather than the X button in the title bar
Michael Pavone <pavone@retrodev.com>
parents: 1008
diff changeset
873 }
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
874 FILE * f = fopen(save_filename, "wb");
351
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
875 if (!f) {
1009
883fe974f72b Fix bug in which save RAM/EEPROM was not persisted correctly if the emulator is exited via the menu rather than the X button in the title bar
Michael Pavone <pavone@retrodev.com>
parents: 1008
diff changeset
876 fprintf(stderr, "Failed to open %s file %s for writing\n", game_context->save_type == SAVE_I2C ? "EEPROM" : "SRAM", save_filename);
351
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
877 return;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
878 }
1009
883fe974f72b Fix bug in which save RAM/EEPROM was not persisted correctly if the emulator is exited via the menu rather than the X button in the title bar
Michael Pavone <pavone@retrodev.com>
parents: 1008
diff changeset
879 fwrite(game_context->save_storage, 1, game_context->save_size, f);
351
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
880 fclose(f);
1009
883fe974f72b Fix bug in which save RAM/EEPROM was not persisted correctly if the emulator is exited via the menu rather than the X button in the title bar
Michael Pavone <pavone@retrodev.com>
parents: 1008
diff changeset
881 printf("Saved %s to %s\n", game_context->save_type == SAVE_I2C ? "EEPROM" : "SRAM", save_filename);
351
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
882 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
883
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
884 #ifndef NO_Z80
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
885 const memmap_chunk z80_map[] = {
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
886 { 0x0000, 0x4000, 0x1FFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, z80_ram, NULL, NULL, NULL, NULL },
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
887 { 0x8000, 0x10000, 0x7FFF, 0, 0, NULL, NULL, NULL, z80_read_bank, z80_write_bank},
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
888 { 0x4000, 0x6000, 0x0003, 0, 0, NULL, NULL, NULL, z80_read_ym, z80_write_ym},
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
889 { 0x6000, 0x6100, 0xFFFF, 0, 0, NULL, NULL, NULL, NULL, z80_write_bank_reg},
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
890 { 0x7F00, 0x8000, 0x00FF, 0, 0, NULL, NULL, NULL, z80_vdp_port_read, z80_vdp_port_write}
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
891 };
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
892 #endif
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
893
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
894 genesis_context *alloc_init_genesis(rom_info *rom, int fps, uint32_t ym_opts)
351
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
895 {
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
896 genesis_context *gen = calloc(1, sizeof(genesis_context));
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
897 gen->master_clock = gen->normal_clock = fps == 60 ? MCLKS_NTSC : MCLKS_PAL;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
898
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
899 gen->vdp = malloc(sizeof(vdp_context));
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
900 init_vdp_context(gen->vdp, version_reg & 0x40);
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
901 gen->frame_end = vdp_cycles_to_frame_end(gen->vdp);
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
902 char * config_cycles = tern_find_path(config, "clocks\0max_cycles\0").ptrval;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
903 gen->max_cycles = config_cycles ? atoi(config_cycles) : DEFAULT_SYNC_INTERVAL;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
904
1002
8d032a368dd5 Made low pass filter frequency configurable
Michael Pavone <pavone@retrodev.com>
parents: 997
diff changeset
905 char * lowpass_cutoff_str = tern_find_path(config, "audio\0lowpass_cutoff\0").ptrval;
8d032a368dd5 Made low pass filter frequency configurable
Michael Pavone <pavone@retrodev.com>
parents: 997
diff changeset
906 uint32_t lowpass_cutoff = lowpass_cutoff_str ? atoi(lowpass_cutoff_str) : DEFAULT_LOWPASS_CUTOFF;
8d032a368dd5 Made low pass filter frequency configurable
Michael Pavone <pavone@retrodev.com>
parents: 997
diff changeset
907
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
908 gen->ym = malloc(sizeof(ym2612_context));
1002
8d032a368dd5 Made low pass filter frequency configurable
Michael Pavone <pavone@retrodev.com>
parents: 997
diff changeset
909 ym_init(gen->ym, render_sample_rate(), gen->master_clock, MCLKS_PER_YM, render_audio_buffer(), ym_opts, lowpass_cutoff);
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
910
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
911 gen->psg = malloc(sizeof(psg_context));
1002
8d032a368dd5 Made low pass filter frequency configurable
Michael Pavone <pavone@retrodev.com>
parents: 997
diff changeset
912 psg_init(gen->psg, render_sample_rate(), gen->master_clock, MCLKS_PER_PSG, render_audio_buffer(), lowpass_cutoff);
832
0433fdd9ba66 Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents: 819
diff changeset
913
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
914 gen->z80 = calloc(1, sizeof(z80_context));
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
915 #ifndef NO_Z80
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
916 z80_options *z_opts = malloc(sizeof(z80_options));
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
917 init_z80_opts(z_opts, z80_map, 5, NULL, 0, MCLKS_PER_Z80);
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
918 init_z80_context(gen->z80, z_opts);
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
919 z80_assert_reset(gen->z80, 0);
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
920 #endif
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
921
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
922 gen->z80->system = gen;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
923 gen->z80->mem_pointers[0] = z80_ram;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
924 gen->z80->mem_pointers[1] = gen->z80->mem_pointers[2] = (uint8_t *)cart;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
925
883
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
926 gen->cart = cart;
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
927 gen->work_ram = ram;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
928 gen->zram = z80_ram;
971
e28f365605da Move mouse mode and capture state to emulation context so it persists properly when switching between the menu and the game
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
929 setup_io_devices(config, rom, gen);
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
930
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
931 gen->save_type = rom->save_type;
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
932 gen->save_type = rom->save_type;
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
933 if (gen->save_type != SAVE_NONE) {
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
934 gen->save_ram_mask = rom->save_mask;
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
935 gen->save_size = rom->save_size;
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
936 gen->save_storage = rom->save_buffer;
769
4638b88bc72d Initial work on I2C EEPROM implementation
Michael Pavone <pavone@retrodev.com>
parents: 767
diff changeset
937 gen->eeprom_map = rom->eeprom_map;
4638b88bc72d Initial work on I2C EEPROM implementation
Michael Pavone <pavone@retrodev.com>
parents: 767
diff changeset
938 gen->num_eeprom = rom->num_eeprom;
4638b88bc72d Initial work on I2C EEPROM implementation
Michael Pavone <pavone@retrodev.com>
parents: 767
diff changeset
939 if (gen->save_type == SAVE_I2C) {
770
a3b90f746dcf Broken EEPROM support
Michael Pavone <pavone@retrodev.com>
parents: 769
diff changeset
940 eeprom_init(&gen->eeprom, gen->save_storage, gen->save_size);
769
4638b88bc72d Initial work on I2C EEPROM implementation
Michael Pavone <pavone@retrodev.com>
parents: 767
diff changeset
941 }
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
942 } else {
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
943 gen->save_storage = NULL;
351
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
944 }
832
0433fdd9ba66 Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents: 819
diff changeset
945
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
946 m68k_options *opts = malloc(sizeof(m68k_options));
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
947 init_m68k_opts(opts, rom->map, rom->map_chunks, MCLKS_PER_68K);
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
948 //TODO: make this configurable
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
949 opts->gen.flags |= M68K_OPT_BROKEN_READ_MODIFY;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
950 gen->m68k = init_68k_context(opts);
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
951 gen->m68k->system = gen;
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
952
776
cbf97d335444 Full support for Sega mapper when it comes to data. Code in remapped sections may not work reliably. SSF2 now works.
Michael Pavone <pavone@retrodev.com>
parents: 774
diff changeset
953 for (int i = 0; i < rom->map_chunks; i++)
cbf97d335444 Full support for Sega mapper when it comes to data. Code in remapped sections may not work reliably. SSF2 now works.
Michael Pavone <pavone@retrodev.com>
parents: 774
diff changeset
954 {
cbf97d335444 Full support for Sega mapper when it comes to data. Code in remapped sections may not work reliably. SSF2 now works.
Michael Pavone <pavone@retrodev.com>
parents: 774
diff changeset
955 if (rom->map[i].flags & MMAP_PTR_IDX) {
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
956 gen->m68k->mem_pointers[rom->map[i].ptr_index] = rom->map[i].buffer;
776
cbf97d335444 Full support for Sega mapper when it comes to data. Code in remapped sections may not work reliably. SSF2 now works.
Michael Pavone <pavone@retrodev.com>
parents: 774
diff changeset
957 }
cbf97d335444 Full support for Sega mapper when it comes to data. Code in remapped sections may not work reliably. SSF2 now works.
Michael Pavone <pavone@retrodev.com>
parents: 774
diff changeset
958 }
832
0433fdd9ba66 Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents: 819
diff changeset
959
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
960 return gen;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
961 }
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
962
884
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
963 void free_genesis(genesis_context *gen)
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
964 {
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
965 vdp_free(gen->vdp);
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
966 m68k_options_free(gen->m68k->options);
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
967 free(gen->m68k);
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
968 z80_options_free(gen->z80->options);
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
969 free(gen->z80);
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
970 ym_free(gen->ym);
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
971 psg_free(gen->psg);
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
972 free(gen->save_storage);
956
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
973 free(gen->save_dir);
884
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
974 }
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
975
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
976 void start_genesis(genesis_context *gen, char *statefile, uint8_t *debugger)
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
977 {
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
978
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
979 if (statefile) {
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
980 uint32_t pc = load_gst(gen, statefile);
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
981 if (!pc) {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
982 fatal_error("Failed to load save state %s\n", statefile);
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
983 }
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
984 printf("Loaded %s\n", statefile);
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 510
diff changeset
985 if (debugger) {
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
986 insert_breakpoint(gen->m68k, pc, debugger);
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
987 }
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
988 adjust_int_cycle(gen->m68k, gen->vdp);
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
989 start_68k_context(gen->m68k, pc);
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
990 } else {
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 510
diff changeset
991 if (debugger) {
752
296ddfcf0d43 Minor cleanup in init_run_cpu
Michael Pavone <pavone@retrodev.com>
parents: 736
diff changeset
992 uint32_t address = cart[2] << 16 | cart[3];
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
993 insert_breakpoint(gen->m68k, address, debugger);
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
994 }
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
995 m68k_reset(gen->m68k);
211
464513050c85 Small bit of cleanup
Mike Pavone <pavone@retrodev.com>
parents: 198
diff changeset
996 }
464513050c85 Small bit of cleanup
Mike Pavone <pavone@retrodev.com>
parents: 198
diff changeset
997 }
464513050c85 Small bit of cleanup
Mike Pavone <pavone@retrodev.com>
parents: 198
diff changeset
998
764
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
999 char *title;
340
58a085cfc6bd Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents: 338
diff changeset
1000
764
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
1001 void update_title(char *rom_name)
340
58a085cfc6bd Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents: 338
diff changeset
1002 {
764
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
1003 if (title) {
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
1004 free(title);
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
1005 title = NULL;
340
58a085cfc6bd Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents: 338
diff changeset
1006 }
764
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
1007 title = alloc_concat(rom_name, " - BlastEm");
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1008 render_update_caption(title);
340
58a085cfc6bd Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents: 338
diff changeset
1009 }
58a085cfc6bd Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents: 338
diff changeset
1010
765
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1011 void set_region(rom_info *info, uint8_t region)
341
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
1012 {
765
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1013 if (!region) {
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1014 char * def_region = tern_find_ptr(config, "default_region");
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1015 if (def_region && (!info->regions || (info->regions & translate_region_char(toupper(*def_region))))) {
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1016 region = translate_region_char(toupper(*def_region));
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1017 } else {
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1018 region = info->regions;
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1019 }
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1020 }
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1021 if (region & REGION_E) {
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1022 version_reg = NO_DISK | EUR;
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1023 } else if (region & REGION_J) {
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1024 version_reg = NO_DISK | JAP;
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1025 } else {
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1026 version_reg = NO_DISK | USA;
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1027 }
341
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
1028 }
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
1029
956
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1030 void setup_saves(char *fname, rom_info *info, genesis_context *context)
955
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1031 {
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1032 char * barename = basename_no_extension(fname);
1008
51885857c019 Removed assumptions that path separators are Unix style outside of Unix-only verions of functions
Michael Pavone <pavone@retrodev.com>
parents: 1002
diff changeset
1033 char const * parts[3] = {get_save_dir(), PATH_SEP, barename};
955
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1034 char *save_dir = alloc_concat_m(3, parts);
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1035 if (!ensure_dir_exists(save_dir)) {
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1036 warning("Failed to create save directory %s\n", save_dir);
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1037 }
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1038 parts[0] = save_dir;
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1039 parts[2] = info->save_type == SAVE_I2C ? "save.eeprom" : "save.sram";
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1040 free(save_filename);
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1041 save_filename = alloc_concat_m(3, parts);
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1042 parts[2] = "quicksave.gst";
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1043 free(save_state_path);
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1044 save_state_path = alloc_concat_m(3, parts);
956
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1045 context->save_dir = save_dir;
955
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1046 free(barename);
956
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1047 if (info->save_type != SAVE_NONE) {
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1048 FILE * f = fopen(save_filename, "rb");
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1049 if (f) {
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1050 uint32_t read = fread(context->save_storage, 1, info->save_size, f);
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1051 fclose(f);
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1052 if (read > 0) {
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1053 printf("Loaded %s from %s\n", info->save_type == SAVE_I2C ? "EEPROM" : "SRAM", save_filename);
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1054 }
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1055 }
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1056 atexit(persist_save);
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1057 }
955
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1058 }
229c23b3ab73 Switch to storing SRAM/EEPROM and save states in a per-game directory rather than next to the ROM (for SRAM/EEPROM) or in the current working directory (for save states)
Michael Pavone <pavone@retrodev.com>
parents: 953
diff changeset
1059
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1060 int main(int argc, char ** argv)
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1061 {
496
6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents: 488
diff changeset
1062 set_exe_str(argv[0]);
6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents: 488
diff changeset
1063 config = load_config();
184
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1064 int width = -1;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1065 int height = -1;
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1066 int debug = 0;
407
c3abc4ada43d Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents: 405
diff changeset
1067 int ym_log = 0;
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1068 int loaded = 0;
469
5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents: 467
diff changeset
1069 uint8_t force_version = 0;
5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents: 467
diff changeset
1070 char * romfname = NULL;
197
7c227a8ec53d Add instruction address logging to translator and support for reading an address log to the disassembler
Mike Pavone <pavone@retrodev.com>
parents: 195
diff changeset
1071 FILE *address_log = NULL;
425
8b3ae850d1c4 Forgot to null initialize the statfile pointer
Mike Pavone <pavone@retrodev.com>
parents: 424
diff changeset
1072 char * statefile = NULL;
766
1b2f8280ba81 WIP changes to support reading cart memory map from ROM DB
Michael Pavone <pavone@retrodev.com>
parents: 765
diff changeset
1073 int rom_size;
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 510
diff changeset
1074 uint8_t * debuggerfun = NULL;
860
213c3b5160d0 Default to fullscreen on Android since windowed mode does not make sense there
Michael Pavone <pavone@retrodev.com>
parents: 846
diff changeset
1075 uint8_t fullscreen = FULLSCREEN_DEFAULT, use_gl = 1;
885
e3f5ec336432 Allow menu ROM to be debugged
Michael Pavone <pavone@retrodev.com>
parents: 884
diff changeset
1076 uint8_t debug_target = 0;
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1077 for (int i = 1; i < argc; i++) {
184
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1078 if (argv[i][0] == '-') {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1079 switch(argv[i][1]) {
505
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 501
diff changeset
1080 case 'b':
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 501
diff changeset
1081 i++;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 501
diff changeset
1082 if (i >= argc) {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
1083 fatal_error("-b must be followed by a frame count\n");
505
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 501
diff changeset
1084 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 501
diff changeset
1085 headless = 1;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 501
diff changeset
1086 exit_after = atoi(argv[i]);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 501
diff changeset
1087 break;
184
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1088 case 'd':
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 510
diff changeset
1089 debuggerfun = (uint8_t *)debugger;
885
e3f5ec336432 Allow menu ROM to be debugged
Michael Pavone <pavone@retrodev.com>
parents: 884
diff changeset
1090 //allow debugging the menu
e3f5ec336432 Allow menu ROM to be debugged
Michael Pavone <pavone@retrodev.com>
parents: 884
diff changeset
1091 if (argv[i][2] == 'm') {
e3f5ec336432 Allow menu ROM to be debugged
Michael Pavone <pavone@retrodev.com>
parents: 884
diff changeset
1092 debug_target = 1;
e3f5ec336432 Allow menu ROM to be debugged
Michael Pavone <pavone@retrodev.com>
parents: 884
diff changeset
1093 }
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 510
diff changeset
1094 break;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 510
diff changeset
1095 case 'D':
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 510
diff changeset
1096 gdb_remote_init();
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 510
diff changeset
1097 debuggerfun = (uint8_t *)gdb_debug_enter;
184
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1098 break;
338
5c34a9c39394 Re-enable frame limit, but add a command line flag to disable it
Mike Pavone <pavone@retrodev.com>
parents: 336
diff changeset
1099 case 'f':
860
213c3b5160d0 Default to fullscreen on Android since windowed mode does not make sense there
Michael Pavone <pavone@retrodev.com>
parents: 846
diff changeset
1100 fullscreen = !fullscreen;
338
5c34a9c39394 Re-enable frame limit, but add a command line flag to disable it
Mike Pavone <pavone@retrodev.com>
parents: 336
diff changeset
1101 break;
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
1102 case 'g':
501
e1355aa80f4d Use OpenGL by default. Add OpenGL switch to help text
Mike Pavone <pavone@retrodev.com>
parents: 496
diff changeset
1103 use_gl = 0;
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
1104 break;
197
7c227a8ec53d Add instruction address logging to translator and support for reading an address log to the disassembler
Mike Pavone <pavone@retrodev.com>
parents: 195
diff changeset
1105 case 'l':
7c227a8ec53d Add instruction address logging to translator and support for reading an address log to the disassembler
Mike Pavone <pavone@retrodev.com>
parents: 195
diff changeset
1106 address_log = fopen("address.log", "w");
7c227a8ec53d Add instruction address logging to translator and support for reading an address log to the disassembler
Mike Pavone <pavone@retrodev.com>
parents: 195
diff changeset
1107 break;
464
226ed16b1fb6 Added version flag
Mike Pavone <pavone@retrodev.com>
parents: 463
diff changeset
1108 case 'v':
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
1109 info_message("blastem %s\n", BLASTEM_VERSION);
464
226ed16b1fb6 Added version flag
Mike Pavone <pavone@retrodev.com>
parents: 463
diff changeset
1110 return 0;
226ed16b1fb6 Added version flag
Mike Pavone <pavone@retrodev.com>
parents: 463
diff changeset
1111 break;
265
c6d12878ea93 Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 264
diff changeset
1112 case 'n':
c6d12878ea93 Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 264
diff changeset
1113 z80_enabled = 0;
c6d12878ea93 Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 264
diff changeset
1114 break;
341
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
1115 case 'r':
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
1116 i++;
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
1117 if (i >= argc) {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
1118 fatal_error("-r must be followed by region (J, U or E)\n");
341
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
1119 }
765
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1120 force_version = translate_region_char(toupper(argv[i][0]));
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1121 if (!force_version) {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
1122 fatal_error("'%c' is not a valid region character for the -r option\n", argv[i][0]);
341
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
1123 }
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
1124 break;
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
1125 case 's':
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
1126 i++;
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
1127 if (i >= argc) {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
1128 fatal_error("-s must be followed by a savestate filename\n");
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
1129 }
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
1130 statefile = argv[i];
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
1131 break;
832
0433fdd9ba66 Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents: 819
diff changeset
1132 case 't':
0433fdd9ba66 Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents: 819
diff changeset
1133 force_no_terminal();
0433fdd9ba66 Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents: 819
diff changeset
1134 break;
407
c3abc4ada43d Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents: 405
diff changeset
1135 case 'y':
c3abc4ada43d Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents: 405
diff changeset
1136 ym_log = 1;
c3abc4ada43d Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents: 405
diff changeset
1137 break;
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1138 case 'h':
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
1139 info_message(
469
5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents: 467
diff changeset
1140 "Usage: blastem [OPTIONS] ROMFILE [WIDTH] [HEIGHT]\n"
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1141 "Options:\n"
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1142 " -h Print this help text\n"
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1143 " -r (J|U|E) Force region to Japan, US or Europe respectively\n"
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1144 " -f Start in fullscreen mode\n"
501
e1355aa80f4d Use OpenGL by default. Add OpenGL switch to help text
Mike Pavone <pavone@retrodev.com>
parents: 496
diff changeset
1145 " -g Disable OpenGL rendering\n"
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1146 " -s FILE Load a GST format savestate from FILE\n"
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1147 " -d Enter debugger on startup\n"
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1148 " -n Disable Z80\n"
501
e1355aa80f4d Use OpenGL by default. Add OpenGL switch to help text
Mike Pavone <pavone@retrodev.com>
parents: 496
diff changeset
1149 " -v Display version number and exit\n"
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1150 " -l Log 68K code addresses (useful for assemblers)\n"
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1151 " -y Log individual YM-2612 channels to WAVE files\n"
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1152 );
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1153 return 0;
184
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1154 default:
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
1155 fatal_error("Unrecognized switch %s\n", argv[i]);
184
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1156 }
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1157 } else if (!loaded) {
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
1158 if (!(rom_size = load_rom(argv[i]))) {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 787
diff changeset
1159 fatal_error("Failed to open %s for reading\n", argv[i]);
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1160 }
469
5f3344d0d42f Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents: 467
diff changeset
1161 romfname = argv[i];
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1162 loaded = 1;
184
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1163 } else if (width < 0) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1164 width = atoi(argv[i]);
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1165 } else if (height < 0) {
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1166 height = atoi(argv[i]);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1167 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1168 }
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1169 uint8_t menu = !loaded;
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1170 if (!loaded) {
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1171 //load menu
948
f87522554d7b Allow changing the 68K clock divider in the config file
Michael Pavone <pavone@retrodev.com>
parents: 940
diff changeset
1172 romfname = tern_find_path(config, "ui\0rom\0").ptrval;
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1173 if (!romfname) {
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1174 romfname = "menu.bin";
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1175 }
1008
51885857c019 Removed assumptions that path separators are Unix style outside of Unix-only verions of functions
Michael Pavone <pavone@retrodev.com>
parents: 1002
diff changeset
1176 if (is_absolute_path(romfname)) {
875
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1177 if (!(rom_size = load_rom(romfname))) {
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1178 fatal_error("Failed to open UI ROM %s for reading", romfname);
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1179 }
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1180 } else {
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1181 long fsize;
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1182 cart = (uint16_t *)read_bundled_file(romfname, &fsize);
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1183 if (!cart) {
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1184 fatal_error("Failed to open UI ROM %s for reading", romfname);
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1185 }
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1186 rom_size = nearest_pow2(fsize);
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1187 if (rom_size > fsize) {
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1188 cart = realloc(cart, rom_size);
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1189 }
54ffba3768d6 Make menu stuff work on Android (theoretically)
Michael Pavone <pavone@retrodev.com>
parents: 874
diff changeset
1190 }
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1191 //TODO: load relative to executable or from assets depending on platform
872
7022ba865cfd Initial work for allowing loading a ROM from menu
Michael Pavone <pavone@retrodev.com>
parents: 861
diff changeset
1192
861
4e394d9a7548 Added temporary hack for loading a fixed ROM path so that Android build is "useable" before UI is in place
Michael Pavone <pavone@retrodev.com>
parents: 860
diff changeset
1193 loaded = 1;
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1194 }
948
f87522554d7b Allow changing the 68K clock divider in the config file
Michael Pavone <pavone@retrodev.com>
parents: 940
diff changeset
1195 char *m68k_divider = tern_find_path(config, "clocks\0m68k_divider\0").ptrval;
f87522554d7b Allow changing the 68K clock divider in the config file
Michael Pavone <pavone@retrodev.com>
parents: 940
diff changeset
1196 if (!m68k_divider) {
f87522554d7b Allow changing the 68K clock divider in the config file
Michael Pavone <pavone@retrodev.com>
parents: 940
diff changeset
1197 m68k_divider = "7";
f87522554d7b Allow changing the 68K clock divider in the config file
Michael Pavone <pavone@retrodev.com>
parents: 940
diff changeset
1198 }
f87522554d7b Allow changing the 68K clock divider in the config file
Michael Pavone <pavone@retrodev.com>
parents: 940
diff changeset
1199 MCLKS_PER_68K = atoi(m68k_divider);
f87522554d7b Allow changing the 68K clock divider in the config file
Michael Pavone <pavone@retrodev.com>
parents: 940
diff changeset
1200 if (!MCLKS_PER_68K) {
f87522554d7b Allow changing the 68K clock divider in the config file
Michael Pavone <pavone@retrodev.com>
parents: 940
diff changeset
1201 MCLKS_PER_68K = 7;
f87522554d7b Allow changing the 68K clock divider in the config file
Michael Pavone <pavone@retrodev.com>
parents: 940
diff changeset
1202 }
883
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1203 ram = malloc(RAM_WORDS * sizeof(uint16_t));
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1204 memmap_chunk base_map[] = {
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1205 {0xE00000, 0x1000000, 0xFFFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, ram,
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1206 NULL, NULL, NULL, NULL},
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1207 {0xC00000, 0xE00000, 0x1FFFFF, 0, 0, NULL,
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1208 (read_16_fun)vdp_port_read, (write_16_fun)vdp_port_write,
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1209 (read_8_fun)vdp_port_read_b, (write_8_fun)vdp_port_write_b},
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1210 {0xA00000, 0xA12000, 0x1FFFF, 0, 0, NULL,
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1211 (read_16_fun)io_read_w, (write_16_fun)io_write_w,
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1212 (read_8_fun)io_read, (write_8_fun)io_write}
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1213 };
764
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
1214 tern_node *rom_db = load_rom_db();
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
1215 rom_info info = configure_rom(rom_db, cart, rom_size, base_map, sizeof(base_map)/sizeof(base_map[0]));
776
cbf97d335444 Full support for Sega mapper when it comes to data. Code in remapped sections may not work reliably. SSF2 now works.
Michael Pavone <pavone@retrodev.com>
parents: 774
diff changeset
1216 byteswap_rom(rom_size);
765
dc54387ee1cd Allow regions to be set in ROM DB. Prefer default region if it is one of the valid regions for the ROM.
Michael Pavone <pavone@retrodev.com>
parents: 764
diff changeset
1217 set_region(&info, force_version);
764
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
1218 update_title(info.name);
433
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1219 int def_width = 0;
766
1b2f8280ba81 WIP changes to support reading cart memory map from ROM DB
Michael Pavone <pavone@retrodev.com>
parents: 765
diff changeset
1220 char *config_width = tern_find_path(config, "video\0width\0").ptrval;
433
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1221 if (config_width) {
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1222 def_width = atoi(config_width);
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1223 }
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1224 if (!def_width) {
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1225 def_width = 640;
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1226 }
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1227 width = width < 320 ? def_width : width;
184
ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents: 166
diff changeset
1228 height = height < 240 ? (width/320) * 240 : height;
354
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents: 351
diff changeset
1229 uint32_t fps = 60;
342
13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region
Mike Pavone <pavone@retrodev.com>
parents: 341
diff changeset
1230 if (version_reg & 0x40) {
354
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents: 351
diff changeset
1231 fps = 50;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents: 351
diff changeset
1232 }
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents: 351
diff changeset
1233 if (!headless) {
719
019d27995e32 Upgrade to SDL 2.0 and drop support for the non-OpenGL render path
Michael Pavone <pavone@retrodev.com>
parents: 718
diff changeset
1234 render_init(width, height, title, fps, fullscreen);
342
13f994c88c34 Get frame time correct and frame rate sort of correct for EUR region
Mike Pavone <pavone@retrodev.com>
parents: 341
diff changeset
1235 }
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1236
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1237 genesis = alloc_init_genesis(&info, fps, (ym_log && !menu) ? YM_OPT_WAVE_LOG : 0);
956
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1238 setup_saves(romfname, &info, genesis);
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1239 if (menu) {
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1240 menu_context = genesis;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1241 } else {
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1242 genesis->m68k->options->address_log = address_log;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1243 game_context = genesis;
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1244 }
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
1245
884
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1246 set_keybindings(genesis->ports);
885
e3f5ec336432 Allow menu ROM to be debugged
Michael Pavone <pavone@retrodev.com>
parents: 884
diff changeset
1247 start_genesis(genesis, menu ? NULL : statefile, menu == debug_target ? debuggerfun : NULL);
883
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1248 for(;;)
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1249 {
949
5e4fb650de58 Make Exit option in menu work
Michael Pavone <pavone@retrodev.com>
parents: 940
diff changeset
1250 if (genesis->should_exit) {
5e4fb650de58 Make Exit option in menu work
Michael Pavone <pavone@retrodev.com>
parents: 940
diff changeset
1251 break;
5e4fb650de58 Make Exit option in menu work
Michael Pavone <pavone@retrodev.com>
parents: 940
diff changeset
1252 }
883
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1253 if (menu && menu_context->next_rom) {
884
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1254 if (game_context) {
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1255 if (game_context->save_type != SAVE_NONE) {
940
4f4f8385da8d Fix saving of SRAM/EEPROM when switching games in menu
Michael Pavone <pavone@retrodev.com>
parents: 939
diff changeset
1256 genesis = game_context;
884
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1257 persist_save();
940
4f4f8385da8d Fix saving of SRAM/EEPROM when switching games in menu
Michael Pavone <pavone@retrodev.com>
parents: 939
diff changeset
1258 genesis = menu_context;
884
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1259 }
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1260 free(game_context->cart);
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1261 base_map[0].buffer = ram = game_context->work_ram;
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1262 } else {
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1263 base_map[0].buffer = ram = malloc(RAM_WORDS * sizeof(uint16_t));
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1264 }
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1265 memset(ram, 0, RAM_WORDS * sizeof(uint16_t));
883
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1266 if (!(rom_size = load_rom(menu_context->next_rom))) {
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1267 fatal_error("Failed to open %s for reading\n", menu_context->next_rom);
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1268 }
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1269 info = configure_rom(rom_db, cart, rom_size, base_map, sizeof(base_map)/sizeof(base_map[0]));
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1270 byteswap_rom(rom_size);
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1271 set_region(&info, force_version);
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1272 update_title(info.name);
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1273 if (!game_context) {
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1274 //start a new arena and save old one in suspended genesis context
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1275 genesis->arena = start_new_arena();
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1276 } else {
884
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1277 genesis->arena = set_current_arena(game_context->arena);
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1278 mark_all_free();
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1279 free_genesis(game_context);
883
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1280 }
884
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1281 //allocate new genesis context
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1282 game_context = alloc_init_genesis(&info, fps, ym_log ? YM_OPT_WAVE_LOG : 0);
957
1618d3676a35 Save state menu WIP
Michael Pavone <pavone@retrodev.com>
parents: 956
diff changeset
1283 menu_context->next_context = game_context;
1618d3676a35 Save state menu WIP
Michael Pavone <pavone@retrodev.com>
parents: 956
diff changeset
1284 game_context->next_context = menu_context;
956
f5550cdffe49 Saving the save directory in the rom_info struct didn't make sense. It should be in the console context.
Michael Pavone <pavone@retrodev.com>
parents: 955
diff changeset
1285 setup_saves(menu_context->next_rom, &info, game_context);
883
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1286 free(menu_context->next_rom);
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1287 menu_context->next_rom = NULL;
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1288 menu = 0;
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1289 genesis = game_context;
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1290 genesis->m68k->options->address_log = address_log;
884
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1291 map_all_bindings(genesis->ports);
885
e3f5ec336432 Allow menu ROM to be debugged
Michael Pavone <pavone@retrodev.com>
parents: 884
diff changeset
1292 start_genesis(genesis, statefile, menu == debug_target ? debuggerfun : NULL);
949
5e4fb650de58 Make Exit option in menu work
Michael Pavone <pavone@retrodev.com>
parents: 940
diff changeset
1293 } else if (menu && game_context) {
883
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1294 genesis->arena = set_current_arena(game_context->arena);
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1295 genesis = game_context;
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1296 cart = genesis->cart;
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1297 ram = genesis->work_ram;
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1298 menu = 0;
884
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1299 map_all_bindings(genesis->ports);
883
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1300 resume_68k(genesis->m68k);
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1301 } else if (!menu && menu_context) {
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1302 genesis->arena = set_current_arena(menu_context->arena);
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1303 genesis = menu_context;
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1304 cart = genesis->cart;
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1305 ram = genesis->work_ram;
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1306 menu = 1;
884
252dfd29831d Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
parents: 883
diff changeset
1307 map_all_bindings(genesis->ports);
883
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1308 resume_68k(genesis->m68k);
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1309 } else {
9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
Michael Pavone <pavone@retrodev.com>
parents: 875
diff changeset
1310 break;
874
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1311 }
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1312 }
b6842dfb8edf ROM is now run after being selected in menu. Initial path for menu is read from config file.
Michael Pavone <pavone@retrodev.com>
parents: 872
diff changeset
1313
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1314 return 0;
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1315 }