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annotate blastem.c @ 872:7022ba865cfd

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Initial work for allowing loading a ROM from menu
author Michael Pavone <pavone@retrodev.com>
date Sun, 08 Nov 2015 15:51:57 -0800
parents 4e394d9a7548
children b6842dfb8edf
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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 "68kinst.h"
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7 #include "m68k_core.h"
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8 #include "z80_to_x86.h"
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9 #include "mem.h"
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10 #include "vdp.h"
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11 #include "render.h"
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12 #include "blastem.h"
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1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
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13 #include "gdb_remote.h"
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14 #include "gst.h"
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15 #include "util.h"
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16 #include "romdb.h"
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17 #include "terminal.h"
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18 #include <stdio.h>
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19 #include <stdlib.h>
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20 #include <string.h>
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21 #include <ctype.h>
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22
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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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23 #define BLASTEM_VERSION "0.3.X"
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24
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25 #define MCLKS_NTSC 53693175
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26 #define MCLKS_PAL 53203395
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27
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28 #define MCLKS_PER_68K 7
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29 #define MCLKS_PER_YM MCLKS_PER_68K
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30 #define MCLKS_PER_Z80 15
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31 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16)
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32 #define DEFAULT_SYNC_INTERVAL MCLKS_LINE
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33
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34 //TODO: Figure out the exact value for this
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35 #define LINES_NTSC 262
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36 #define LINES_PAL 312
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37
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38 #define MAX_SOUND_CYCLES 100000
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39
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40 #ifdef __ANDROID__
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41 #define FULLSCREEN_DEFAULT 1
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42 #else
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43 #define FULLSCREEN_DEFAULT 0
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44 #endif
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45
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46 uint16_t *cart;
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47 uint16_t ram[RAM_WORDS];
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48 uint8_t z80_ram[Z80_RAM_BYTES];
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49
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50 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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51 int exit_after = 0;
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52 int z80_enabled = 1;
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53 int frame_limit = 0;
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54
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55 tern_node * config;
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56
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57 #ifndef MIN
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58 #define MIN(a,b) ((a) < (b) ? (a) : (b))
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59 #endif
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60
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61 #define SMD_HEADER_SIZE 512
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62 #define SMD_MAGIC1 0x03
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63 #define SMD_MAGIC2 0xAA
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64 #define SMD_MAGIC3 0xBB
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65 #define SMD_BLOCK_SIZE 0x4000
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66
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67 int load_smd_rom(long filesize, FILE * f)
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68 {
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69 uint8_t block[SMD_BLOCK_SIZE];
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70 filesize -= SMD_HEADER_SIZE;
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71 fseek(f, SMD_HEADER_SIZE, SEEK_SET);
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72
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73 uint16_t * dst = cart;
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74 int rom_size = filesize;
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75 while (filesize > 0) {
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76 fread(block, 1, SMD_BLOCK_SIZE, f);
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77 for (uint8_t *low = block, *high = (block+SMD_BLOCK_SIZE/2), *end = block+SMD_BLOCK_SIZE; high < end; high++, low++) {
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78 *(dst++) = *low << 8 | *high;
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79 }
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80 filesize -= SMD_BLOCK_SIZE;
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81 }
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82 return filesize;
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83 }
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84
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85 void byteswap_rom(int filesize)
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86 {
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87 for(unsigned short * cur = cart; cur - cart < filesize/2; ++cur)
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88 {
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89 *cur = (*cur >> 8) | (*cur << 8);
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90 }
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91 }
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92
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93 int load_rom(char * filename)
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94 {
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95 uint8_t header[10];
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96 FILE * f = fopen(filename, "rb");
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97 if (!f) {
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98 return 0;
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99 }
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100 if (sizeof(header) != fread(header, 1, sizeof(header), f)) {
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101 fatal_error("Error reading from %s\n", filename);
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102 }
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103 fseek(f, 0, SEEK_END);
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104 long filesize = ftell(f);
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105 fseek(f, 0, SEEK_SET);
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106 if (header[1] == SMD_MAGIC1 && header[8] == SMD_MAGIC2 && header[9] == SMD_MAGIC3) {
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107 int i;
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108 for (i = 3; i < 8; i++) {
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109 if (header[i] != 0) {
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110 break;
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111 }
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112 }
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113 if (i == 8) {
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114 if (header[2]) {
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115 fatal_error("%s is a split SMD ROM which is not currently supported", filename);
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116 }
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117 return load_smd_rom(filesize, f);
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118 }
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119 }
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120 cart = malloc(nearest_pow2(filesize));
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121 if (filesize != fread(cart, 1, filesize, f)) {
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122 fatal_error("Error reading from %s\n", filename);
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123 }
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124 fclose(f);
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125 return filesize;
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126 }
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127
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128 uint16_t read_dma_value(uint32_t address)
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129 {
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130 //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
131 if (address < 0x200000) {
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
132 return cart[address];
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
133 } else if(address >= 0x700000) {
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
134 return ram[address & 0x7FFF];
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
135 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
136 //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
137 return 0;
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
138 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
139
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
140 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
141 {
717
22dbdf50d33c Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents: 700
diff changeset
142 //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
143 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
144 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
145 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
146 }
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
147 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
148 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
149 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
150 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
151 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
152 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
153 }
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
154 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
155 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
156 if (next_hint != 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
157 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
158 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
159 context->int_num = 4;
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
160
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
161 }
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 }
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
163 }
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
164 }
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
165 if (context->int_cycle > context->current_cycle) {
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
166 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
167 }
717
22dbdf50d33c Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
Michael Pavone <pavone@retrodev.com>
parents: 700
diff changeset
168 /*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
169 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
170 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
171 }*/
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
172
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->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
174 if (context->should_return) {
7022ba865cfd Initial work for allowing loading a ROM from menu
Michael Pavone <pavone@retrodev.com>
parents: 861
diff changeset
175 context->target_cycle = context->current_cycle;
7022ba865cfd Initial work for allowing loading a ROM from menu
Michael Pavone <pavone@retrodev.com>
parents: 861
diff changeset
176 }
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
177 /*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
178 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
179 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
180 }
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
181
198
209a37eed3e7 Add support for breaking into the debugger while game is running
Mike Pavone <pavone@retrodev.com>
parents: 197
diff changeset
182 int break_on_sync = 0;
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
183 int save_state = 0;
260
625f8e4d5fd2 Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 215
diff changeset
184
280
9ee64039ddeb Fix bank register update
Mike Pavone <pavone@retrodev.com>
parents: 279
diff changeset
185 //#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
186 #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
187 #define dprintf printf
271
969ee17471c5 Protect debug prints for busreq/reset regs with appropriate macros
Mike Pavone <pavone@retrodev.com>
parents: 268
diff changeset
188 #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
189 #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
190 #define dprintf
271
969ee17471c5 Protect debug prints for busreq/reset regs with appropriate macros
Mike Pavone <pavone@retrodev.com>
parents: 268
diff changeset
191 #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
192 #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
193
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
194 #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
195
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
196 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
197 {
682
Michael Pavone <pavone@retrodev.com>
parents: 680 559
diff changeset
198 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
199 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
200 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
201 }
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
202
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
203 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
204 {
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
205 #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
206 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
207 z80_run(z_context, mclks);
548
a3afee2271ce Initial work on the x86-32 target
Michael Pavone <pavone@retrodev.com>
parents: 534
diff changeset
208 } else
a3afee2271ce Initial work on the x86-32 target
Michael Pavone <pavone@retrodev.com>
parents: 534
diff changeset
209 #endif
a3afee2271ce Initial work on the x86-32 target
Michael Pavone <pavone@retrodev.com>
parents: 534
diff changeset
210 {
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
211 z_context->current_cycle = mclks;
260
625f8e4d5fd2 Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 215
diff changeset
212 }
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
213 }
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
214
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
215 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
216 {
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
217 //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
218 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
219 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
220 //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
221 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
222 //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
223 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
224 }
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
225 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
226 ym_run(gen->ym, target);
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
227
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
228 //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
229 }
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
230
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
231 uint32_t last_frame_num;
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
232 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
233 {
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
234 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
235 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
236 z80_context * z_context = gen->z80;
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
237 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
238 sync_z80(z_context, mclks);
695
e1345921e481 Indentation fixup
Michael Pavone <pavone@retrodev.com>
parents: 693
diff changeset
239 sync_sound(gen, mclks);
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
240 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
241 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
242 //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
243 last_frame_num = v_context->frame;
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
244
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
245 if (!headless) {
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
246 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
247 } else if(exit_after){
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
248 --exit_after;
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
249 if (!exit_after) {
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
250 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
251 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
252 }
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
253
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
254 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
255 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
256 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
257 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
258 context->current_cycle -= mclks;
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
259 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
260 gen->ym->current_cycle -= mclks;
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
261 gen->psg->cycles -= mclks;
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
262 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
263 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
264 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
265 }
700
72ab94527a8a Tiny cleanup
Michael Pavone <pavone@retrodev.com>
parents: 697
diff changeset
266 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
267 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
268 //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
269 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
270 //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);
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
271 vdp_int_ack(v_context, context->int_ack);
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
272 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
273 }
721
20be7d01e312 Better handling of savestate and debug break events with "uncooperative" games/demos
Michael Pavone <pavone@retrodev.com>
parents: 719
diff changeset
274 if (!address && (break_on_sync || save_state)) {
20be7d01e312 Better handling of savestate and debug break events with "uncooperative" games/demos
Michael Pavone <pavone@retrodev.com>
parents: 719
diff changeset
275 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
276 }
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
277 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
278 if (address) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
279 if (break_on_sync) {
695
e1345921e481 Indentation fixup
Michael Pavone <pavone@retrodev.com>
parents: 693
diff changeset
280 break_on_sync = 0;
e1345921e481 Indentation fixup
Michael Pavone <pavone@retrodev.com>
parents: 693
diff changeset
281 debugger(context, address);
e1345921e481 Indentation fixup
Michael Pavone <pavone@retrodev.com>
parents: 693
diff changeset
282 }
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
283 if (save_state && (z_context->pc || (!z_context->reset && !z_context->busreq))) {
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
284 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
285 //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
286 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
287 {
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
288 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
289 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
290 save_gst(gen, "savestate.gst", address);
721
20be7d01e312 Better handling of savestate and debug break events with "uncooperative" games/demos
Michael Pavone <pavone@retrodev.com>
parents: 719
diff changeset
291 puts("Saved state to savestate.gst");
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
292 } else if(save_state) {
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
293 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
294 }
198
209a37eed3e7 Add support for breaking into the debugger while game is running
Mike Pavone <pavone@retrodev.com>
parents: 197
diff changeset
295 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
296 return context;
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
297 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
298
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
299 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
300 {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
301 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
302 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
303 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
304 vdp_port &= 0x1F;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
305 //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
306 sync_components(context, 0);
263
2989ed7b8608 Add a second context pointer to m68k_context so that try_fifo_write can still have easy access to the VDP. Handle writes to Z80 code addresses from the 68K.
Mike Pavone <pavone@retrodev.com>
parents: 260
diff changeset
307 vdp_context * v_context = context->video_context;
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
308 genesis_context * gen = context->system;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
309 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
310 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
311 uint32_t before_cycle = v_context->cycles;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
312 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
313
149
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
314 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
315 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
316 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
317 if (v_context->cycles >= gen->frame_end) {
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
318 context->current_cycle = v_context->cycles;
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
319 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
320 sync_components(context, 0);
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
321 gen->bus_busy = 0;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
322 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
323 }
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
324 //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
325 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
326 } 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
327 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
328 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
329 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
330 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
331 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
332 if (v_context->cycles >= gen->frame_end) {
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
333 context->current_cycle = v_context->cycles;
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
334 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
335 sync_components(context, 0);
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
336 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
337 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
338 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
339 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
340 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
341 } else {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
342 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
343 }
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents: 144
diff changeset
344 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
345 } else {
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 696
diff changeset
346 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
347 //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
348 adjust_int_cycle(context, v_context);
88
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 } 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
351 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
352 }
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
353 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
354 //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);
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
355 context->current_cycle = v_context->cycles;
680
4996369f1463 Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents: 679
diff changeset
356 //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
357 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
358 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
359 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
360 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
361 } 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
362 psg_write(gen->psg, value);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
363 } else {
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
364 //TODO: Implement undocumented test register(s)
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
365 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
366 return context;
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
367 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
368
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
369 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
370 {
357
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 356
diff changeset
371 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
372 }
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 356
diff changeset
373
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
374 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
375 {
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
376 z80_context * context = vcontext;
357
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 356
diff changeset
377 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
378 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
379 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
380 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
381 }
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
382 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
383 //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
384 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
385 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
386 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
387 } 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
388 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
389 } 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
390 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
391 }
9498cfa7f7c8 Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
392 } 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
393 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
394 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
395 } 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
396 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
397 }
357
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 356
diff changeset
398 return context;
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
399 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
400
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
401 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
402 {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
403 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
404 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
405 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
406 vdp_port &= 0x1F;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
407 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
408 sync_components(context, 0);
263
2989ed7b8608 Add a second context pointer to m68k_context so that try_fifo_write can still have easy access to the VDP. Handle writes to Z80 code addresses from the 68K.
Mike Pavone <pavone@retrodev.com>
parents: 260
diff changeset
409 vdp_context * v_context = context->video_context;
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
410 uint32_t before_cycle = v_context->cycles;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
411 if (vdp_port < 0x10) {
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
412 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
413 value = vdp_data_port_read(v_context);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
414 } 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
415 value = vdp_control_port_read(v_context);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
416 } else {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
417 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
418 //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
419 }
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
420 } 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
421 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
422 } 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
423 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
424 }
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
425 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
426 //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);
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
427 context->current_cycle = v_context->cycles;
680
4996369f1463 Some small synchronization improvements that do not seem to fix anything
Michael Pavone <pavone@retrodev.com>
parents: 679
diff changeset
428 //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
429 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
430 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
431 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
432 gen->bus_busy = 0;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
433 }
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
434 return value;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
435 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
436
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
437 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
438 {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
439 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
440 if (vdp_port & 1) {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
441 return value;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
442 } else {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
443 return value >> 8;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
444 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
445 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
446
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
447 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
448 {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
449 z80_context * context = vcontext;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
450 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
451 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
452 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
453 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
454 //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
455 //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
456 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
457 //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
458 //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
459 // 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
460 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
461
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
462
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
463 vdp_port &= 0x1F;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
464 uint16_t ret;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
465 if (vdp_port < 0x10) {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
466 //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
467 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
468 if (vdp_port < 4) {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
469 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
470 } 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
471 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
472 } 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
473 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
474 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
475 } else {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
476 //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
477 ret = 0xFFFF;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
478 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
479 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
480 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
481
279
6be6056735a9 Fix native address lookup in bannked memory area
Mike Pavone <pavone@retrodev.com>
parents: 276
diff changeset
482 uint32_t zram_counter = 0;
6be6056735a9 Fix native address lookup in bannked memory area
Mike Pavone <pavone@retrodev.com>
parents: 276
diff changeset
483
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
484 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
485 {
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
486 genesis_context * gen = context->system;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
487 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
488 //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
489 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
490 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
491 location &= 0x7FFF;
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
492 if (location < 0x4000) {
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
493 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
494 #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
495 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
496 #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
497 } 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
498 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
499 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
500 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
501 } 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
502 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
503 } 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
504 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
505 }
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
506 } 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
507 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
508 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
509 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
510 } 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
511 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
512 }
395
0b5f93358a93 Add debugger command for saving Z80 RAM to a file
Mike Pavone <pavone@retrodev.com>
parents: 392
diff changeset
513 } 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
514 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
515 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
516 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
517 } else {
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
518 location &= 0x1FFF;
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
519 if (location < 0x100) {
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
520 switch(location/2)
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
521 {
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
522 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
523 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
524 break;
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
525 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
526 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
527 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
528 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
529 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
530 break;
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
531 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
532 gen->ports[0].control = value;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
533 break;
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
534 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
535 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
536 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
537 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
538 gen->ports[2].control = value;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
539 break;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
540 }
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
541 } else {
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
542 if (location == 0x1100) {
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
543 if (value & 1) {
271
969ee17471c5 Protect debug prints for busreq/reset regs with appropriate macros
Mike Pavone <pavone@retrodev.com>
parents: 268
diff changeset
544 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
545 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
546 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
547 } else {
687c1dd3bcb9 Fake busack when Z80 is disabled
Michael Pavone <pavone@retrodev.com>
parents: 672
diff changeset
548 gen->z80->busack = 1;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
549 }
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
550 } 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
551 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
552 dputs("releasing z80 bus");
280
9ee64039ddeb Fix bank register update
Mike Pavone <pavone@retrodev.com>
parents: 279
diff changeset
553 #ifdef DO_DEBUG_PRINT
279
6be6056735a9 Fix native address lookup in bannked memory area
Mike Pavone <pavone@retrodev.com>
parents: 276
diff changeset
554 char fname[20];
6be6056735a9 Fix native address lookup in bannked memory area
Mike Pavone <pavone@retrodev.com>
parents: 276
diff changeset
555 sprintf(fname, "zram-%d", zram_counter++);
6be6056735a9 Fix native address lookup in bannked memory area
Mike Pavone <pavone@retrodev.com>
parents: 276
diff changeset
556 FILE * f = fopen(fname, "wb");
6be6056735a9 Fix native address lookup in bannked memory area
Mike Pavone <pavone@retrodev.com>
parents: 276
diff changeset
557 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
558 fclose(f);
280
9ee64039ddeb Fix bank register update
Mike Pavone <pavone@retrodev.com>
parents: 279
diff changeset
559 #endif
260
625f8e4d5fd2 Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 215
diff changeset
560 }
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
561 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
562 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
563 } else {
687c1dd3bcb9 Fake busack when Z80 is disabled
Michael Pavone <pavone@retrodev.com>
parents: 672
diff changeset
564 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
565 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
566 }
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
567 } 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
568 sync_z80(gen->z80, context->current_cycle);
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
569 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
570 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
571 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
572 } 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
573 gen->z80->reset = 0;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
574 }
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
575 } 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
576 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
577 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
578 } 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
579 gen->z80->reset = 1;
260
625f8e4d5fd2 Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 215
diff changeset
580 }
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
581 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
582 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
583 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
584 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
585 return context;
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
586 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
587
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
588 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
589 {
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
590 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
591 return io_write(location, context, value >> 8);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
592 } 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
593 return io_write(location, context, value);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
594 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
595 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
596
130
0bdbffa9fe90 Make version register return correct value for USA
Mike Pavone <pavone@retrodev.com>
parents: 115
diff changeset
597 #define USA 0x80
0bdbffa9fe90 Make version register return correct value for USA
Mike Pavone <pavone@retrodev.com>
parents: 115
diff changeset
598 #define JAP 0x00
0bdbffa9fe90 Make version register return correct value for USA
Mike Pavone <pavone@retrodev.com>
parents: 115
diff changeset
599 #define EUR 0xC0
0bdbffa9fe90 Make version register return correct value for USA
Mike Pavone <pavone@retrodev.com>
parents: 115
diff changeset
600 #define NO_DISK 0x20
0bdbffa9fe90 Make version register return correct value for USA
Mike Pavone <pavone@retrodev.com>
parents: 115
diff changeset
601 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
602
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
603 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
604 {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
605 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
606 genesis_context *gen = context->system;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
607 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
608 //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
609 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
610 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
611 location &= 0x7FFF;
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
612 if (location < 0x4000) {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
613 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
614 } 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
615 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
616 value = ym_read_status(gen->ym);
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
617 } else {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
618 value = 0xFF;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
619 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
620 } else {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
621 value = 0xFF;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
622 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
623 } else {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
624 location &= 0x1FFF;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
625 if (location < 0x100) {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
626 switch(location/2)
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
627 {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
628 case 0x0:
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
629 //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
630 value = version_reg;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
631 break;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
632 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
633 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
634 break;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
635 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
636 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
637 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
638 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
639 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
640 break;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
641 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
642 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
643 break;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
644 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
645 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
646 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
647 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
648 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
649 break;
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
650 default:
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
651 value = 0xFF;
153
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
652 }
42c031184e8a Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents: 149
diff changeset
653 } else {
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
654 if (location == 0x1100) {
677
687c1dd3bcb9 Fake busack when Z80 is disabled
Michael Pavone <pavone@retrodev.com>
parents: 672
diff changeset
655 value = z80_enabled ? !z80_get_busack(gen->z80, context->current_cycle) : !gen->z80->busack;
753
cee1275f5d08 Lame placeholder support for floating bus bits of IO hardware. Needs to be replaced with prefetch based values
Michael Pavone <pavone@retrodev.com>
parents: 752
diff changeset
656 //TODO: actual pre-fetch emulation
cee1275f5d08 Lame placeholder support for floating bus bits of IO hardware. Needs to be replaced with prefetch based values
Michael Pavone <pavone@retrodev.com>
parents: 752
diff changeset
657 value |= 0x4E;
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
658 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
659 } 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
660 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
661 } else {
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
662 value = 0xFF;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
663 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
664 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
665 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
666 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
667 return value;
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
668 }
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
669
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
670 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
671 {
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
672 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
673 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
674 value = value | (value << 8);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
675 } 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
676 value <<= 8;
753
cee1275f5d08 Lame placeholder support for floating bus bits of IO hardware. Needs to be replaced with prefetch based values
Michael Pavone <pavone@retrodev.com>
parents: 752
diff changeset
677 //TODO: actual pre-fetch emulation
cee1275f5d08 Lame placeholder support for floating bus bits of IO hardware. Needs to be replaced with prefetch based values
Michael Pavone <pavone@retrodev.com>
parents: 752
diff changeset
678 value |= 0x73;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
679 }
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
680 return value;
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
681 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
682
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
683 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
684 {
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
685 z80_context * context = vcontext;
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
686 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
687 sync_sound(gen, context->current_cycle);
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
688 if (location & 1) {
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
689 ym_data_write(gen->ym, value);
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
690 } else if (location & 2) {
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
691 ym_address_write_part2(gen->ym, value);
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
692 } else {
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
693 ym_address_write_part1(gen->ym, value);
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
694 }
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
695 return context;
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
696 }
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
697
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
698 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
699 {
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
700 z80_context * context = vcontext;
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
701 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
702 sync_sound(gen, context->current_cycle);
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
703 return ym_read_status(gen->ym);
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
704 }
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
705
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
706 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
707 {
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
708 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
709 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
710 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
711 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
712 }
660
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
713 //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
714 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
715 //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
716 //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
717 // 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
718 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
719
660
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
720 location &= 0x7FFF;
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
721 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
722 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
723 }
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
724 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
725 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
726 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
727 } else {
660
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
728 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
729 }
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
730 return 0;
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
731 }
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
732
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
733 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
734 {
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
735 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
736 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
737 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
738 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
739 }
660
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
740 //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
741 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
742 //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
743 //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
744 // 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
745 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
746
660
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
747 location &= 0x7FFF;
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
748 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
749 if (address >= 0xE00000) {
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
750 address &= 0xFFFF;
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
751 ((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
752 } else if (address >= 0xC00000) {
649db9397fa1 Add support for Z80 access to VDP via bank area
Michael Pavone <pavone@retrodev.com>
parents: 606
diff changeset
753 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
754 } else {
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
755 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
756 }
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
757 return context;
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
758 }
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
759
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
760 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
761 {
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
762 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
763
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
764 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
765 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
766 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
767 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
768 } else {
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
769 context->mem_pointers[1] = NULL;
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 602
diff changeset
770 }
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
771
592
4ff7bbb3943b Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
772 return context;
290
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
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
775 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
776 {
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
777 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
778 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
779 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
780 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
781 }
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
782 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
783 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
784 }
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
785
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
786 const memmap_chunk base_map[] = {
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
787 {0xE00000, 0x1000000, 0xFFFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, ram,
343
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
788 NULL, NULL, NULL, NULL},
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
789 {0xC00000, 0xE00000, 0x1FFFFF, 0, 0, NULL,
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
790 (read_16_fun)vdp_port_read, (write_16_fun)vdp_port_write,
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
791 (read_8_fun)vdp_port_read_b, (write_8_fun)vdp_port_write_b},
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
792 {0xA00000, 0xA12000, 0x1FFFF, 0, 0, NULL,
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
793 (read_16_fun)io_read_w, (write_16_fun)io_write_w,
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
794 (read_8_fun)io_read, (write_8_fun)io_write}
467bfa17004a Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents: 342
diff changeset
795 };
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
796
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
797 char * 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
798 genesis_context * genesis;
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
799 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
800 {
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
801 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
802 if (!f) {
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
803 fprintf(stderr, "Failed to open %s file %s for writing\n", genesis->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
804 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
805 }
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
806 fwrite(genesis->save_storage, 1, genesis->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
807 fclose(f);
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
808 printf("Saved %s to %s\n", genesis->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
809 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
810
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
811 void init_run_cpu(genesis_context * gen, rom_info *rom, FILE * address_log, char * statefile, uint8_t * debugger)
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
812 {
569
9b7fcf748be0 Rename x86_68k_options and m68k_to_x86.h to m68k_options and m68k_core.h respectively
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
813 m68k_options opts;
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
814
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
815 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
816 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
817 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
818 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
819 gen->save_storage = rom->save_buffer;
769
4638b88bc72d Initial work on I2C EEPROM implementation
Michael Pavone <pavone@retrodev.com>
parents: 767
diff changeset
820 gen->eeprom_map = rom->eeprom_map;
4638b88bc72d Initial work on I2C EEPROM implementation
Michael Pavone <pavone@retrodev.com>
parents: 767
diff changeset
821 gen->num_eeprom = rom->num_eeprom;
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
822 FILE * f = fopen(save_filename, "rb");
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
823 if (f) {
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
824 uint32_t read = fread(gen->save_storage, 1, rom->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
825 fclose(f);
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
826 if (read > 0) {
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
827 printf("Loaded %s from %s\n", rom->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
828 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
829 }
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
830 atexit(persist_save);
769
4638b88bc72d Initial work on I2C EEPROM implementation
Michael Pavone <pavone@retrodev.com>
parents: 767
diff changeset
831 if (gen->save_type == SAVE_I2C) {
770
a3b90f746dcf Broken EEPROM support
Michael Pavone <pavone@retrodev.com>
parents: 769
diff changeset
832 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
833 }
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
834 } else {
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
835 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
836 }
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
837
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
838 init_m68k_opts(&opts, rom->map, rom->map_chunks, MCLKS_PER_68K);
211
464513050c85 Small bit of cleanup
Mike Pavone <pavone@retrodev.com>
parents: 198
diff changeset
839 opts.address_log = address_log;
837
f2cd380adebe Implement TAS
Michael Pavone <pavone@retrodev.com>
parents: 832
diff changeset
840 opts.gen.flags |= M68K_OPT_BROKEN_READ_MODIFY;
690
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 683
diff changeset
841 m68k_context *context = init_68k_context(&opts);
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 683
diff changeset
842 gen->m68k = context;
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
843
690
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 683
diff changeset
844 context->video_context = gen->vdp;
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 683
diff changeset
845 context->system = gen;
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
846 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
847 {
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
848 if (rom->map[i].flags & MMAP_PTR_IDX) {
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
849 context->mem_pointers[rom->map[i].ptr_index] = rom->map[i].buffer;
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
850 }
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
851 }
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
852
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
853 if (statefile) {
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
854 uint32_t pc = load_gst(gen, statefile);
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
855 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
856 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
857 }
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
858 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
859 if (debugger) {
690
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 683
diff changeset
860 insert_breakpoint(context, pc, debugger);
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
861 }
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 447
diff changeset
862 adjust_int_cycle(gen->m68k, gen->vdp);
690
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 683
diff changeset
863 start_68k_context(context, pc);
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
864 } 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
865 if (debugger) {
752
296ddfcf0d43 Minor cleanup in init_run_cpu
Michael Pavone <pavone@retrodev.com>
parents: 736
diff changeset
866 uint32_t address = cart[2] << 16 | cart[3];
690
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 683
diff changeset
867 insert_breakpoint(context, address, debugger);
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
868 }
690
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 683
diff changeset
869 m68k_reset(context);
211
464513050c85 Small bit of cleanup
Mike Pavone <pavone@retrodev.com>
parents: 198
diff changeset
870 }
464513050c85 Small bit of cleanup
Mike Pavone <pavone@retrodev.com>
parents: 198
diff changeset
871 }
464513050c85 Small bit of cleanup
Mike Pavone <pavone@retrodev.com>
parents: 198
diff changeset
872
764
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
873 char *title;
340
58a085cfc6bd Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents: 338
diff changeset
874
764
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
875 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
876 {
764
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
877 if (title) {
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
878 free(title);
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
879 title = NULL;
340
58a085cfc6bd Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents: 338
diff changeset
880 }
764
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
881 title = alloc_concat(rom_name, " - BlastEm");
340
58a085cfc6bd Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents: 338
diff changeset
882 }
58a085cfc6bd Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents: 338
diff changeset
883
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
884 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
885 {
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
886 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
887 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
888 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
889 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
890 } 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
891 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
892 }
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
893 }
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
894 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
895 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
896 } 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
897 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
898 } 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
899 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
900 }
341
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
901 }
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
902
590
ea80559c67cb WIP effort to update z80 core for code gen changes
Michael Pavone <pavone@retrodev.com>
parents: 570
diff changeset
903 #ifndef NO_Z80
ea80559c67cb WIP effort to update z80 core for code gen changes
Michael Pavone <pavone@retrodev.com>
parents: 570
diff changeset
904 const memmap_chunk z80_map[] = {
660
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
905 { 0x0000, 0x4000, 0x1FFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, z80_ram, NULL, NULL, NULL, NULL },
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
906 { 0x8000, 0x10000, 0x7FFF, 0, 0, NULL, NULL, NULL, z80_read_bank, z80_write_bank},
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
907 { 0x4000, 0x6000, 0x0003, 0, 0, NULL, NULL, NULL, z80_read_ym, z80_write_ym},
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
908 { 0x6000, 0x6100, 0xFFFF, 0, 0, NULL, NULL, NULL, NULL, z80_write_bank_reg},
e7cae6d9aaa6 Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents: 659
diff changeset
909 { 0x7F00, 0x8000, 0x00FF, 0, 0, NULL, NULL, NULL, z80_vdp_port_read, z80_vdp_port_write}
590
ea80559c67cb WIP effort to update z80 core for code gen changes
Michael Pavone <pavone@retrodev.com>
parents: 570
diff changeset
910 };
ea80559c67cb WIP effort to update z80 core for code gen changes
Michael Pavone <pavone@retrodev.com>
parents: 570
diff changeset
911 #endif
341
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
912
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
913 int main(int argc, char ** argv)
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
914 {
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
915 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
916 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
917 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
918 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
919 int debug = 0;
407
c3abc4ada43d Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents: 405
diff changeset
920 int ym_log = 0;
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
921 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
922 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
923 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
924 FILE *address_log = NULL;
425
8b3ae850d1c4 Forgot to null initialize the statfile pointer
Mike Pavone <pavone@retrodev.com>
parents: 424
diff changeset
925 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
926 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
927 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
928 uint8_t fullscreen = FULLSCREEN_DEFAULT, use_gl = 1;
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
929 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
930 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
931 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
932 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
933 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
934 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
935 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
936 }
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
937 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
938 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
939 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
940 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
941 debuggerfun = (uint8_t *)debugger;
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
942 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
943 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
944 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
945 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
946 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
947 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
948 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
949 break;
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
950 case 'g':
501
e1355aa80f4d Use OpenGL by default. Add OpenGL switch to help text
Mike Pavone <pavone@retrodev.com>
parents: 496
diff changeset
951 use_gl = 0;
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
952 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
953 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
954 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
955 break;
464
226ed16b1fb6 Added version flag
Mike Pavone <pavone@retrodev.com>
parents: 463
diff changeset
956 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
957 info_message("blastem %s\n", BLASTEM_VERSION);
464
226ed16b1fb6 Added version flag
Mike Pavone <pavone@retrodev.com>
parents: 463
diff changeset
958 return 0;
226ed16b1fb6 Added version flag
Mike Pavone <pavone@retrodev.com>
parents: 463
diff changeset
959 break;
265
c6d12878ea93 Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 264
diff changeset
960 case 'n':
c6d12878ea93 Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 264
diff changeset
961 z80_enabled = 0;
c6d12878ea93 Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 264
diff changeset
962 break;
341
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
963 case 'r':
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
964 i++;
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
965 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
966 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
967 }
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
968 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
969 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
970 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
971 }
6ad8e36de685 Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents: 340
diff changeset
972 break;
424
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
973 case 's':
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
974 i++;
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
975 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
976 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
977 }
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
978 statefile = argv[i];
7e8e179116af Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents: 422
diff changeset
979 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
980 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
981 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
982 break;
407
c3abc4ada43d Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents: 405
diff changeset
983 case 'y':
c3abc4ada43d Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents: 405
diff changeset
984 ym_log = 1;
c3abc4ada43d Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents: 405
diff changeset
985 break;
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
986 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
987 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
988 "Usage: blastem [OPTIONS] ROMFILE [WIDTH] [HEIGHT]\n"
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
989 "Options:\n"
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
990 " -h Print this help text\n"
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
991 " -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
992 " -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
993 " -g Disable OpenGL rendering\n"
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
994 " -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
995 " -d Enter debugger on startup\n"
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
996 " -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
997 " -v Display version number and exit\n"
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
998 " -l Log 68K code addresses (useful for assemblers)\n"
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
999 " -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
1000 );
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1001 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
1002 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
1003 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
1004 }
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1005 } else if (!loaded) {
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
1006 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
1007 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
1008 }
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
1009 romfname = argv[i];
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1010 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
1011 } 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
1012 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
1013 } 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
1014 height = atoi(argv[i]);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1015 }
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1016 }
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1017 if (!loaded) {
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
1018 #ifdef __ANDROID__
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
1019 //Temporary hack until UI is in place
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
1020 if (!(rom_size = load_rom("/mnt/sdcard/rom.bin"))) {
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
1021 fatal_error("Failed to open /mnt/sdcard/rom.bin for reading");
872
7022ba865cfd Initial work for allowing loading a ROM from menu
Michael Pavone <pavone@retrodev.com>
parents: 861
diff changeset
1022
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
1023 }
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
1024 romfname = "/mnt/sdcard/rom.bin";
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
1025 loaded = 1;
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
1026 #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
1027 fatal_error("Usage: blastem [OPTIONS] ROMFILE [WIDTH] [HEIGHT]\n");
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
1028 #endif
463
a1d298119153 Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents: 458
diff changeset
1029 }
764
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
1030 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
1031 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
1032 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
1033 set_region(&info, force_version);
764
bb60259e8edf Initial work on ROM database
Michael Pavone <pavone@retrodev.com>
parents: 753
diff changeset
1034 update_title(info.name);
433
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1035 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
1036 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
1037 if (config_width) {
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1038 def_width = atoi(config_width);
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1039 }
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1040 if (!def_width) {
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1041 def_width = 640;
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1042 }
ed4d0017c041 Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
1043 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
1044 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
1045 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
1046 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
1047 fps = 50;
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents: 351
diff changeset
1048 }
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents: 351
diff changeset
1049 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
1050 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
1051 }
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1052 vdp_context v_context;
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
1053 genesis_context gen;
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
1054 memset(&gen, 0, sizeof(gen));
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
1055 gen.master_clock = gen.normal_clock = fps == 60 ? MCLKS_NTSC : MCLKS_PAL;
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
1056
623
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents: 534
diff changeset
1057 init_vdp_context(&v_context, version_reg & 0x40);
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
1058 gen.frame_end = vdp_cycles_to_frame_end(&v_context);
766
1b2f8280ba81 WIP changes to support reading cart memory map from ROM DB
Michael Pavone <pavone@retrodev.com>
parents: 765
diff changeset
1059 char * config_cycles = tern_find_path(config, "clocks\0max_cycles\0").ptrval;
785
0e5f14d9a579 Prep for 0.3.0 release
Michael Pavone <pavone@retrodev.com>
parents: 778
diff changeset
1060 gen.max_cycles = config_cycles ? atoi(config_cycles) : DEFAULT_SYNC_INTERVAL;
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
1061
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
1062 ym2612_context y_context;
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
1063 ym_init(&y_context, render_sample_rate(), gen.master_clock, MCLKS_PER_YM, render_audio_buffer(), ym_log ? YM_OPT_WAVE_LOG : 0);
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
1064
354
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents: 351
diff changeset
1065 psg_context p_context;
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
1066 psg_init(&p_context, render_sample_rate(), gen.master_clock, MCLKS_PER_PSG, render_audio_buffer());
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
1067
260
625f8e4d5fd2 Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 215
diff changeset
1068 z80_context z_context;
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
1069 #ifndef NO_Z80
590
ea80559c67cb WIP effort to update z80 core for code gen changes
Michael Pavone <pavone@retrodev.com>
parents: 570
diff changeset
1070 z80_options z_opts;
819
ab017fb09e77 Added support for an IO memory map in Z80 core
Michael Pavone <pavone@retrodev.com>
parents: 815
diff changeset
1071 init_z80_opts(&z_opts, z80_map, 5, NULL, 0, MCLKS_PER_Z80);
260
625f8e4d5fd2 Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 215
diff changeset
1072 init_z80_context(&z_context, &z_opts);
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
1073 z80_assert_reset(&z_context, 0);
548
a3afee2271ce Initial work on the x86-32 target
Michael Pavone <pavone@retrodev.com>
parents: 534
diff changeset
1074 #endif
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
1075
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 289
diff changeset
1076 z_context.system = &gen;
260
625f8e4d5fd2 Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 215
diff changeset
1077 z_context.mem_pointers[0] = z80_ram;
625f8e4d5fd2 Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents: 215
diff changeset
1078 z_context.mem_pointers[1] = z_context.mem_pointers[2] = (uint8_t *)cart;
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
1079
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
1080 gen.z80 = &z_context;
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
1081 gen.vdp = &v_context;
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
1082 gen.ym = &y_context;
354
15dd6418fe67 Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents: 351
diff changeset
1083 gen.psg = &p_context;
801
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
1084 gen.work_ram = ram;
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
1085 gen.zram = z80_ram;
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
1086 genesis = &gen;
693
318ebe078315 Fix missing call to setup_io_devices
Michael Pavone <pavone@retrodev.com>
parents: 690
diff changeset
1087 setup_io_devices(config, gen.ports);
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
1088
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
1089 int fname_size = strlen(romfname);
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
1090 char * ext = info.save_type == SAVE_I2C ? "eeprom" : "sram";
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
1091 save_filename = malloc(fname_size+strlen(ext) + 2);
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
1092 memcpy(save_filename, romfname, fname_size);
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
1093 int i;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
1094 for (i = fname_size-1; fname_size >= 0; --i) {
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
1095 if (save_filename[i] == '.') {
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
1096 strcpy(save_filename + i + 1, ext);
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
1097 break;
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
1098 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
1099 }
2f264d2a60c2 Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents: 346
diff changeset
1100 if (i < 0) {
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
1101 save_filename[fname_size] = '.';
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
1102 strcpy(save_filename + fname_size + 1, ext);
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
1103 }
645
d77c79cec800 Initial support for configurable IO, custom IO and sega transfer board emulation
Michael Pavone <pavone@retrodev.com>
parents: 628
diff changeset
1104 set_keybindings(gen.ports);
488
32f053ad9b02 Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents: 487
diff changeset
1105
767
ea525f600b1d SRAM detection from ROM header is no working correctly again
Michael Pavone <pavone@retrodev.com>
parents: 766
diff changeset
1106 init_run_cpu(&gen, &info, address_log, statefile, debuggerfun);
88
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1107 return 0;
c339559f1d4f Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1108 }