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annotate gst.c @ 1483:001120e91fed nuklear_ui

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Skip loading menu ROM if Nuklear UI is enabled. Allow disabling Nuklear UI in favor of old menu ROM both at compile time and in config. Fall back to ROM UI if GL is unavailable
author Michael Pavone <pavone@retrodev.com>
date Sat, 25 Nov 2017 20:43:20 -0800
parents 7e67f8a37051
children d6d4c006a7b3
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rev   line source
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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 "genesis.h"
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7 #include "gst.h"
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8 #include <string.h>
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9 #include <stdio.h>
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10
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11 #define GST_68K_REGS 0x80
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12 #define GST_68K_REG_SIZE (0xDA-GST_68K_REGS)
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13 #define GST_68K_PC_OFFSET (0xC8-GST_68K_REGS)
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14 #define GST_68K_SR_OFFSET (0xD0-GST_68K_REGS)
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15 #define GST_68K_USP_OFFSET (0xD2-GST_68K_REGS)
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16 #define GST_68K_SSP_OFFSET (0xD6-GST_68K_REGS)
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17 #define GST_68K_RAM 0x2478
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18 #define GST_Z80_REGS 0x404
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19 #define GST_Z80_REG_SIZE (0x440-GST_Z80_REGS)
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20 #define GST_Z80_RAM 0x474
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21 #define GST_VDP_REGS 0xFA
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22 #define GST_VDP_MEM 0x12478
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23 #define GST_YM_OFFSET 0x1E4
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24 #define GST_YM_SIZE (0x3E4-GST_YM_OFFSET)
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25
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26 uint32_t read_le_32(uint8_t * data)
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27 {
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28 return data[3] << 24 | data[2] << 16 | data[1] << 8 | data[0];
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29 }
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30
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31 uint16_t read_le_16(uint8_t * data)
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32 {
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33 return data[1] << 8 | data[0];
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34 }
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35
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36 uint16_t read_be_16(uint8_t * data)
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37 {
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38 return data[0] << 8 | data[1];
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39 }
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40
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41 void write_le_32(uint8_t * dst, uint32_t val)
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42 {
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43 dst[0] = val;
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44 dst[1] = val >> 8;
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45 dst[2] = val >> 16;
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46 dst[3] = val >> 24;
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47 }
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48
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49 void write_le_16(uint8_t * dst, uint16_t val)
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50 {
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51 dst[0] = val;
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52 dst[1] = val >> 8;
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53 }
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54
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55 void write_be_32(uint8_t * dst, uint32_t val)
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56 {
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57 dst[0] = val >> 24;
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58 dst[1] = val >> 16;
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59 dst[2] = val >> 8;
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60 dst[3] = val;
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61 }
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62
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63 void write_be_16(uint8_t * dst, uint16_t val)
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64 {
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65 dst[0] = val >> 8;
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66 dst[1] = val;
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67 }
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68
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69 uint32_t m68k_load_gst(m68k_context * context, FILE * gstfile)
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70 {
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71 uint8_t buffer[GST_68K_REG_SIZE];
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72 fseek(gstfile, GST_68K_REGS, SEEK_SET);
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73 if (fread(buffer, 1, GST_68K_REG_SIZE, gstfile) != GST_68K_REG_SIZE) {
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74 fputs("Failed to read 68K registers from savestate\n", stderr);
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75 return 0;
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76 }
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77 uint8_t * curpos = buffer;
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78 for (int i = 0; i < 8; i++) {
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79 context->dregs[i] = read_le_32(curpos);
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80 curpos += sizeof(uint32_t);
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81 }
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82 for (int i = 0; i < 8; i++) {
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83 context->aregs[i] = read_le_32(curpos);
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84 curpos += sizeof(uint32_t);
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85 }
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86 uint32_t pc = read_le_32(buffer + GST_68K_PC_OFFSET);
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87 uint16_t sr = read_le_16(buffer + GST_68K_SR_OFFSET);
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88 context->status = sr >> 8;
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89 for (int flag = 4; flag >= 0; flag--) {
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90 context->flags[flag] = sr & 1;
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91 sr >>= 1;
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92 }
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93 if (context->status & (1 << 5)) {
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94 context->aregs[8] = read_le_32(buffer + GST_68K_USP_OFFSET);
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95 } else {
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96 context->aregs[8] = read_le_32(buffer + GST_68K_SSP_OFFSET);
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97 }
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98
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99 return pc;
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100 }
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101
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102 uint8_t m68k_save_gst(m68k_context * context, uint32_t pc, FILE * gstfile)
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103 {
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104 uint8_t buffer[GST_68K_REG_SIZE];
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105 uint8_t * curpos = buffer;
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106 for (int i = 0; i < 8; i++) {
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107 write_le_32(curpos, context->dregs[i]);
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108 curpos += sizeof(uint32_t);
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109 }
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110 for (int i = 0; i < 8; i++) {
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111 write_le_32(curpos, context->aregs[i]);
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112 curpos += sizeof(uint32_t);
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113 }
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114 write_le_32(buffer + GST_68K_PC_OFFSET, pc);
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115 uint16_t sr = context->status << 3;
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116 for (int flag = 4; flag >= 0; flag--) {
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117 sr <<= 1;
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118 sr |= context->flags[flag];
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119 }
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120 write_le_16(buffer + GST_68K_SR_OFFSET, sr);
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parents:
diff changeset
121 if (context->status & (1 << 5)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
122 write_le_32(buffer + GST_68K_USP_OFFSET, context->aregs[8]);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
123 write_le_32(buffer + GST_68K_SSP_OFFSET, context->aregs[7]);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
124 } else {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
125 write_le_32(buffer + GST_68K_USP_OFFSET, context->aregs[7]);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
126 write_le_32(buffer + GST_68K_SSP_OFFSET, context->aregs[8]);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
127 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
128 fseek(gstfile, GST_68K_REGS, SEEK_SET);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
129 if (fwrite(buffer, 1, GST_68K_REG_SIZE, gstfile) != GST_68K_REG_SIZE) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
130 fputs("Failed to write 68K registers to savestate\n", stderr);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
131 return 0;
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parents:
diff changeset
132 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
133
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
134 return 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
135 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
136
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
137 uint8_t z80_load_gst(z80_context * context, FILE * gstfile)
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
138 {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
139 uint8_t regdata[GST_Z80_REG_SIZE];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
140 fseek(gstfile, GST_Z80_REGS, SEEK_SET);
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parents:
diff changeset
141 if (fread(regdata, 1, sizeof(regdata), gstfile) != sizeof(regdata)) {
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parents:
diff changeset
142 fputs("Failed to read Z80 registers from savestate\n", stderr);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
143 return 0;
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parents:
diff changeset
144 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
145 uint8_t * curpos = regdata;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
146 uint8_t f = *(curpos++);
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diff changeset
147 context->flags[ZF_C] = f & 1;
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diff changeset
148 f >>= 1;
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diff changeset
149 context->flags[ZF_N] = f & 1;
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parents:
diff changeset
150 f >>= 1;
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
151 context->flags[ZF_PV] = f & 1;
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parents:
diff changeset
152 f >>= 2;
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
153 context->flags[ZF_H] = f & 1;
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parents:
diff changeset
154 f >>= 2;
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
155 context->flags[ZF_Z] = f & 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
156 f >>= 1;
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Mike Pavone <pavone@retrodev.com>
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diff changeset
157 context->flags[ZF_S] = f;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
158
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
159 context->regs[Z80_A] = *curpos;
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parents:
diff changeset
160 curpos += 3;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
161 for (int reg = Z80_C; reg <= Z80_IYH; reg++) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
162 context->regs[reg++] = *(curpos++);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
163 context->regs[reg] = *curpos;
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parents:
diff changeset
164 curpos += 3;
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parents:
diff changeset
165 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
166 context->pc = read_le_16(curpos);
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parents:
diff changeset
167 curpos += 4;
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parents:
diff changeset
168 context->sp = read_le_16(curpos);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
169 curpos += 4;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
170 f = *(curpos++);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
171 context->alt_flags[ZF_C] = f & 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
172 f >>= 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
173 context->alt_flags[ZF_N] = f & 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
174 f >>= 1;
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
175 context->alt_flags[ZF_PV] = f & 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
176 f >>= 2;
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
177 context->alt_flags[ZF_H] = f & 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
178 f >>= 2;
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
179 context->alt_flags[ZF_Z] = f & 1;
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parents:
diff changeset
180 f >>= 1;
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parents:
diff changeset
181 context->alt_flags[ZF_S] = f;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
182 context->alt_regs[Z80_A] = *curpos;
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parents:
diff changeset
183 curpos += 3;
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parents:
diff changeset
184 for (int reg = Z80_C; reg <= Z80_H; reg++) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
185 context->alt_regs[reg++] = *(curpos++);
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parents:
diff changeset
186 context->alt_regs[reg] = *curpos;
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parents:
diff changeset
187 curpos += 3;
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parents:
diff changeset
188 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
189 context->regs[Z80_I] = *curpos;
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parents:
diff changeset
190 curpos += 2;
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parents:
diff changeset
191 context->iff1 = context->iff2 = *curpos;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
192 curpos += 2;
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: 467
diff changeset
193 context->reset = !*(curpos++);
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: 467
diff changeset
194 context->busreq = *curpos;
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
195 curpos += 3;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
196 uint32_t bank = read_le_32(curpos);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
197 if (bank < 0x400000) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
198 context->mem_pointers[1] = context->mem_pointers[2] + bank;
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parents:
diff changeset
199 } else {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
200 context->mem_pointers[1] = NULL;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
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parents:
diff changeset
201 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
202 context->bank_reg = bank >> 15;
962
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
203 uint8_t buffer[Z80_RAM_BYTES];
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
204 fseek(gstfile, GST_Z80_RAM, SEEK_SET);
962
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
205 if(fread(buffer, 1, sizeof(buffer), gstfile) != (8*1024)) {
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
206 fputs("Failed to read Z80 RAM from savestate\n", stderr);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
207 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
208 }
962
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
209 for (int i = 0; i < Z80_RAM_BYTES; i++)
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
210 {
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
211 if (context->mem_pointers[0][i] != buffer[i]) {
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
212 context->mem_pointers[0][i] = buffer[i];
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
213 z80_handle_code_write(i, context);
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
214 }
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
215 }
1019
e34334e6c682 Fix GST savestate loading to deal with SAT cache to fix sprite corruption on savestate load. Clear out Z80 native_pc so the Z80 state does not get hosed when loading a savestate while the emulator is already running
Michael Pavone <pavone@retrodev.com>
parents: 962
diff changeset
216 context->native_pc = NULL;
1112
7ab7c8fb34ba Fix intermittent crash in GST savestate loading
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
217 context->extra_pc = NULL;
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
218 return 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
219 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
220
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
221 uint8_t vdp_load_gst(vdp_context * context, FILE * state_file)
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
222 {
1019
e34334e6c682 Fix GST savestate loading to deal with SAT cache to fix sprite corruption on savestate load. Clear out Z80 native_pc so the Z80 state does not get hosed when loading a savestate while the emulator is already running
Michael Pavone <pavone@retrodev.com>
parents: 962
diff changeset
223 uint8_t tmp_buf[VRAM_SIZE];
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
224 fseek(state_file, GST_VDP_REGS, SEEK_SET);
1181
0928b68fef2a Update gst loader to deal with VDP changes
Michael Pavone <pavone@retrodev.com>
parents: 1120
diff changeset
225 if (fread(tmp_buf, 1, VDP_REGS, state_file) != VDP_REGS) {
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
226 fputs("Failed to read VDP registers from savestate\n", stderr);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
227 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
228 }
1181
0928b68fef2a Update gst loader to deal with VDP changes
Michael Pavone <pavone@retrodev.com>
parents: 1120
diff changeset
229 for (uint16_t i = 0; i < VDP_REGS; i++)
0928b68fef2a Update gst loader to deal with VDP changes
Michael Pavone <pavone@retrodev.com>
parents: 1120
diff changeset
230 {
0928b68fef2a Update gst loader to deal with VDP changes
Michael Pavone <pavone@retrodev.com>
parents: 1120
diff changeset
231 vdp_control_port_write(context, 0x8000 | (i << 8) | tmp_buf[i]);
0928b68fef2a Update gst loader to deal with VDP changes
Michael Pavone <pavone@retrodev.com>
parents: 1120
diff changeset
232 }
1019
e34334e6c682 Fix GST savestate loading to deal with SAT cache to fix sprite corruption on savestate load. Clear out Z80 native_pc so the Z80 state does not get hosed when loading a savestate while the emulator is already running
Michael Pavone <pavone@retrodev.com>
parents: 962
diff changeset
233 if (fread(tmp_buf, 1, CRAM_SIZE*2, state_file) != CRAM_SIZE*2) {
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
234 fputs("Failed to read CRAM from savestate\n", stderr);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
235 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
236 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
237 for (int i = 0; i < CRAM_SIZE; i++) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
238 uint16_t value;
1429
7e67f8a37051 write_cram_internal takes a CRAM index, not a CRAM address
Michael Pavone <pavone@retrodev.com>
parents: 1428
diff changeset
239 write_cram_internal(context, i, (tmp_buf[i*2+1] << 8) | tmp_buf[i*2]);
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
240 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
241 if (fread(tmp_buf, 2, VSRAM_SIZE, state_file) != VSRAM_SIZE) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
242 fputs("Failed to read VSRAM from savestate\n", stderr);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
243 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
244 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
245 for (int i = 0; i < VSRAM_SIZE; i++) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
246 context->vsram[i] = (tmp_buf[i*2+1] << 8) | tmp_buf[i*2];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
247 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
248 fseek(state_file, GST_VDP_MEM, SEEK_SET);
1019
e34334e6c682 Fix GST savestate loading to deal with SAT cache to fix sprite corruption on savestate load. Clear out Z80 native_pc so the Z80 state does not get hosed when loading a savestate while the emulator is already running
Michael Pavone <pavone@retrodev.com>
parents: 962
diff changeset
249 if (fread(tmp_buf, 1, VRAM_SIZE, state_file) != VRAM_SIZE) {
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
250 fputs("Failed to read VRAM from savestate\n", stderr);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
251 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
252 }
1019
e34334e6c682 Fix GST savestate loading to deal with SAT cache to fix sprite corruption on savestate load. Clear out Z80 native_pc so the Z80 state does not get hosed when loading a savestate while the emulator is already running
Michael Pavone <pavone@retrodev.com>
parents: 962
diff changeset
253 for (int i = 0; i < VRAM_SIZE; i++) {
1333
69c25e1188e5 Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
Michael Pavone <pavone@retrodev.com>
parents: 1325
diff changeset
254 context->vdpmem[i] = tmp_buf[i];
69c25e1188e5 Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
Michael Pavone <pavone@retrodev.com>
parents: 1325
diff changeset
255 vdp_check_update_sat_byte(context, i, tmp_buf[i]);
1019
e34334e6c682 Fix GST savestate loading to deal with SAT cache to fix sprite corruption on savestate load. Clear out Z80 native_pc so the Z80 state does not get hosed when loading a savestate while the emulator is already running
Michael Pavone <pavone@retrodev.com>
parents: 962
diff changeset
256 }
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
257 return 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
258 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
259
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
260 uint8_t vdp_save_gst(vdp_context * context, FILE * outfile)
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
261 {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
262 uint8_t tmp_buf[CRAM_SIZE*2];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
263 fseek(outfile, GST_VDP_REGS, SEEK_SET);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
264 if(fwrite(context->regs, 1, VDP_REGS, outfile) != VDP_REGS) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
265 fputs("Error writing VDP regs to savestate\n", stderr);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
266 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
267 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
268 for (int i = 0; i < CRAM_SIZE; i++)
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
269 {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
270 tmp_buf[i*2] = context->cram[i];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
271 tmp_buf[i*2+1] = context->cram[i] >> 8;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
272 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
273 if (fwrite(tmp_buf, 1, sizeof(tmp_buf), outfile) != sizeof(tmp_buf)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
274 fputs("Error writing CRAM to savestate\n", stderr);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
275 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
276 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
277 for (int i = 0; i < VSRAM_SIZE; i++)
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
278 {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
279 tmp_buf[i*2] = context->vsram[i];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
280 tmp_buf[i*2+1] = context->vsram[i] >> 8;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
281 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
282 if (fwrite(tmp_buf, 2, VSRAM_SIZE, outfile) != VSRAM_SIZE) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
283 fputs("Error writing VSRAM to savestate\n", stderr);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
284 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
285 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
286 fseek(outfile, GST_VDP_MEM, SEEK_SET);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
287 if (fwrite(context->vdpmem, 1, VRAM_SIZE, outfile) != VRAM_SIZE) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
288 fputs("Error writing VRAM to savestate\n", stderr);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
289 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
290 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
291 return 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
292 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
293
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
294 uint8_t z80_save_gst(z80_context * context, FILE * gstfile)
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
295 {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
296 uint8_t regdata[GST_Z80_REG_SIZE];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
297 uint8_t * curpos = regdata;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
298 memset(regdata, 0, sizeof(regdata));
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
299 uint8_t f = context->flags[ZF_S];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
300 f <<= 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
301 f |= context->flags[ZF_Z] ;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
302 f <<= 2;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
303 f |= context->flags[ZF_H];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
304 f <<= 2;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
305 f |= context->flags[ZF_PV];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
306 f <<= 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
307 f |= context->flags[ZF_N];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
308 f <<= 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
309 f |= context->flags[ZF_C];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
310 *(curpos++) = f;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
311 *curpos = context->regs[Z80_A];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
312
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
313 curpos += 3;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
314 for (int reg = Z80_C; reg <= Z80_IYH; reg++) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
315 *(curpos++) = context->regs[reg++];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
316 *curpos = context->regs[reg];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
317 curpos += 3;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
318 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
319 write_le_16(curpos, context->pc);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
320 curpos += 4;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
321 write_le_16(curpos, context->sp);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
322 curpos += 4;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
323 f = context->alt_flags[ZF_S];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
324 f <<= 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
325 f |= context->alt_flags[ZF_Z] ;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
326 f <<= 2;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
327 f |= context->alt_flags[ZF_H];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
328 f <<= 2;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
329 f |= context->alt_flags[ZF_PV];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
330 f <<= 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
331 f |= context->alt_flags[ZF_N];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
332 f <<= 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
333 f |= context->alt_flags[ZF_C];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
334 *(curpos++) = f;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
335 *curpos = context->alt_regs[Z80_A];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
336 curpos += 3;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
337 for (int reg = Z80_C; reg <= Z80_H; reg++) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
338 *(curpos++) = context->alt_regs[reg++];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
339 *curpos = context->alt_regs[reg];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
340 curpos += 3;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
341 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
342 *curpos = context->regs[Z80_I];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
343 curpos += 2;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
344 *curpos = context->iff1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
345 curpos += 2;
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: 467
diff changeset
346 *(curpos++) = !context->reset;
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: 467
diff changeset
347 *curpos = context->busreq;
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
348 curpos += 3;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
349 uint32_t bank = context->bank_reg << 15;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
350 write_le_32(curpos, bank);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
351 fseek(gstfile, GST_Z80_REGS, SEEK_SET);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
352 if (fwrite(regdata, 1, sizeof(regdata), gstfile) != sizeof(regdata)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
353 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
354 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
355 fseek(gstfile, GST_Z80_RAM, SEEK_SET);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
356 if(fwrite(context->mem_pointers[0], 1, 8*1024, gstfile) != (8*1024)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
357 fputs("Failed to write Z80 RAM to savestate\n", stderr);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
358 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
359 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
360 return 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
361 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
362
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
363 uint8_t ym_load_gst(ym2612_context * context, FILE * gstfile)
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
364 {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
365 uint8_t regdata[GST_YM_SIZE];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
366 fseek(gstfile, GST_YM_OFFSET, SEEK_SET);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
367 if (fread(regdata, 1, sizeof(regdata), gstfile) != sizeof(regdata)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
368 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
369 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
370 for (int i = 0; i < sizeof(regdata); i++) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
371 if (i & 0x100) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
372 ym_address_write_part2(context, i & 0xFF);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
373 } else {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
374 ym_address_write_part1(context, i);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
375 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
376 ym_data_write(context, regdata[i]);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
377 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
378 return 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
379 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
380
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
381 uint8_t ym_save_gst(ym2612_context * context, FILE * gstfile)
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
382 {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
383 uint8_t regdata[GST_YM_SIZE];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
384 for (int i = 0; i < sizeof(regdata); i++) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
385 if (i & 0x100) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
386 int reg = (i & 0xFF);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
387 if (reg >= YM_PART2_START && reg < YM_REG_END) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
388 regdata[i] = context->part2_regs[reg-YM_PART2_START];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
389 } else {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
390 regdata[i] = 0xFF;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
391 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
392 } else {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
393 if (i >= YM_PART1_START && i < YM_REG_END) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
394 regdata[i] = context->part1_regs[i-YM_PART1_START];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
395 } else {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
396 regdata[i] = 0xFF;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
397 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
398 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
399 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
400 fseek(gstfile, GST_YM_OFFSET, SEEK_SET);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
401 if (fwrite(regdata, 1, sizeof(regdata), gstfile) != sizeof(regdata)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
402 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
403 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
404 return 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
405 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
406
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
407 uint32_t load_gst(genesis_context * gen, char * fname)
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
408 {
962
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
409 char buffer[4096];
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
410 FILE * gstfile = fopen(fname, "rb");
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
411 if (!gstfile) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
412 fprintf(stderr, "Could not open file %s for reading\n", fname);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
413 goto error;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
414 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
415 char ident[5];
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
416 if (fread(ident, 1, sizeof(ident), gstfile) != sizeof(ident)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
417 fprintf(stderr, "Could not read ident code from %s\n", fname);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
418 goto error_close;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
419 }
708
61faa298af07 Small horizontal interrupt fixes
Michael Pavone <pavone@retrodev.com>
parents: 668
diff changeset
420 if (memcmp(ident, "GST\x40\xE0", 3) != 0) {
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
421 fprintf(stderr, "%s doesn't appear to be a GST savestate. The ident code is %c%c%c\\x%X\\x%X instead of GST\\x40\\xE0.\n", fname, ident[0], ident[1], ident[2], ident[3], ident[4]);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
422 goto error_close;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
423 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
424 uint32_t pc = m68k_load_gst(gen->m68k, gstfile);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
425 if (!pc) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
426 goto error_close;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
427 }
962
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
428
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
429 if (!vdp_load_gst(gen->vdp, gstfile)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
430 goto error_close;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
431 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
432 if (!ym_load_gst(gen->ym, gstfile)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
433 goto error_close;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
434 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
435 if (!z80_load_gst(gen->z80, gstfile)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
436 goto error_close;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
437 }
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1103
diff changeset
438 gen->io.ports[0].control = 0x40;
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1103
diff changeset
439 gen->io.ports[1].control = 0x40;
962
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
440
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
441 fseek(gstfile, GST_68K_RAM, SEEK_SET);
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
442 for (int i = 0; i < (32*1024);) {
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
443 if (fread(buffer, 1, sizeof(buffer), gstfile) != sizeof(buffer)) {
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
444 fputs("Failed to read 68K RAM from savestate\n", stderr);
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
445 return 0;
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
446 }
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
447 for(char *curpos = buffer; curpos < (buffer + sizeof(buffer)); curpos += sizeof(uint16_t)) {
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
448 uint16_t word = read_be_16(curpos);
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
449 if (word != gen->work_ram[i]) {
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
450 gen->work_ram[i] = word;
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
451 m68k_handle_code_write(0xFF0000 | (i << 1), gen->m68k);
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
452 }
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
453 i++;
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
454 }
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
455 }
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
456 fclose(gstfile);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
457 return pc;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
458
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
459 error_close:
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
460 fclose(gstfile);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
461 error:
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
462 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
463 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
464
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
465 uint8_t save_gst(genesis_context * gen, char *fname, uint32_t m68k_pc)
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
466 {
962
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
467 char buffer[4096];
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
468 FILE * gstfile = fopen(fname, "wb");
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
469 if (!gstfile) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
470 fprintf(stderr, "Could not open %s for writing\n", fname);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
471 goto error;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
472 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
473 if (fwrite("GST\x40\xE0", 1, 5, gstfile) != 5) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
474 fputs("Error writing signature to savestate\n", stderr);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
475 goto error_close;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
476 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
477 if (!m68k_save_gst(gen->m68k, m68k_pc, gstfile)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
478 goto error_close;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
479 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
480 if (!z80_save_gst(gen->z80, gstfile)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
481 goto error_close;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
482 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
483 if (!vdp_save_gst(gen->vdp, gstfile)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
484 goto error_close;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
485 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
486 if (!ym_save_gst(gen->ym, gstfile)) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
487 goto error_close;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
488 }
962
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
489 fseek(gstfile, GST_68K_RAM, SEEK_SET);
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
490 for (int i = 0; i < (32*1024);) {
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
491 for(char *curpos = buffer; curpos < (buffer + sizeof(buffer)); curpos += sizeof(uint16_t)) {
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
492 write_be_16(curpos, gen->work_ram[i++]);
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
493 }
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
494 if (fwrite(buffer, 1, sizeof(buffer), gstfile) != sizeof(buffer)) {
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
495 fputs("Failed to write 68K RAM to savestate\n", stderr);
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
496 return 0;
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
497 }
f52cb02a1466 Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents: 961
diff changeset
498 }
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
499 return 1;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
500
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
501 error_close:
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
502 fclose(gstfile);
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
503 error:
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
504 return 0;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
505 }