Mercurial > repos > blastem
annotate gst.c @ 995:2bc27415565b
Fix some stuff with interrupt timing. The change in adjust_int_cycle gets Overdrive working again (vint was not being preferred over hint in some cases). One of the changes seems to have broken Fatal Rewind again, but no other regressions that I can see.
author | Michael Pavone <pavone@retrodev.com> |
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date | Sat, 30 Apr 2016 08:37:55 -0700 |
parents | f52cb02a1466 |
children | e34334e6c682 |
rev | line source |
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Added copyright notice to source files and added GPL license text in COPYING
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1 /* |
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2 Copyright 2013 Michael Pavone |
668
5439ae7946ca
Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
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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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Added support for saving savestates. Added gst savestate format test harness
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6 #include "gst.h" |
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7 #include <string.h> |
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8 |
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9 #define GST_68K_REGS 0x80 |
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10 #define GST_68K_REG_SIZE (0xDA-GST_68K_REGS) |
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11 #define GST_68K_PC_OFFSET (0xC8-GST_68K_REGS) |
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12 #define GST_68K_SR_OFFSET (0xD0-GST_68K_REGS) |
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13 #define GST_68K_USP_OFFSET (0xD2-GST_68K_REGS) |
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14 #define GST_68K_SSP_OFFSET (0xD6-GST_68K_REGS) |
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15 #define GST_68K_RAM 0x2478 |
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16 #define GST_Z80_REGS 0x404 |
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17 #define GST_Z80_REG_SIZE (0x440-GST_Z80_REGS) |
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18 #define GST_Z80_RAM 0x474 |
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19 #define GST_VDP_REGS 0xFA |
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20 #define GST_VDP_MEM 0x12478 |
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21 #define GST_YM_OFFSET 0x1E4 |
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22 #define GST_YM_SIZE (0x3E4-GST_YM_OFFSET) |
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23 |
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24 uint32_t read_le_32(uint8_t * data) |
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25 { |
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26 return data[3] << 24 | data[2] << 16 | data[1] << 8 | data[0]; |
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27 } |
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28 |
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29 uint16_t read_le_16(uint8_t * data) |
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30 { |
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31 return data[1] << 8 | data[0]; |
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32 } |
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33 |
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34 uint16_t read_be_16(uint8_t * data) |
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35 { |
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36 return data[0] << 8 | data[1]; |
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37 } |
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38 |
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39 void write_le_32(uint8_t * dst, uint32_t val) |
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40 { |
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41 dst[0] = val; |
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42 dst[1] = val >> 8; |
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43 dst[2] = val >> 16; |
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44 dst[3] = val >> 24; |
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45 } |
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46 |
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47 void write_le_16(uint8_t * dst, uint16_t val) |
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48 { |
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49 dst[0] = val; |
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50 dst[1] = val >> 8; |
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51 } |
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52 |
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53 void write_be_32(uint8_t * dst, uint32_t val) |
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54 { |
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55 dst[0] = val >> 24; |
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56 dst[1] = val >> 16; |
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57 dst[2] = val >> 8; |
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58 dst[3] = val; |
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59 } |
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60 |
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61 void write_be_16(uint8_t * dst, uint16_t val) |
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62 { |
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63 dst[0] = val >> 8; |
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64 dst[1] = val; |
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65 } |
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66 |
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67 uint32_t m68k_load_gst(m68k_context * context, FILE * gstfile) |
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68 { |
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69 uint8_t buffer[GST_68K_REG_SIZE]; |
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70 fseek(gstfile, GST_68K_REGS, SEEK_SET); |
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71 if (fread(buffer, 1, GST_68K_REG_SIZE, gstfile) != GST_68K_REG_SIZE) { |
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72 fputs("Failed to read 68K registers from savestate\n", stderr); |
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73 return 0; |
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74 } |
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75 uint8_t * curpos = buffer; |
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76 for (int i = 0; i < 8; i++) { |
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77 context->dregs[i] = read_le_32(curpos); |
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78 curpos += sizeof(uint32_t); |
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79 } |
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80 for (int i = 0; i < 8; i++) { |
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81 context->aregs[i] = read_le_32(curpos); |
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82 curpos += sizeof(uint32_t); |
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83 } |
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84 uint32_t pc = read_le_32(buffer + GST_68K_PC_OFFSET); |
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85 uint16_t sr = read_le_16(buffer + GST_68K_SR_OFFSET); |
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86 context->status = sr >> 8; |
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87 for (int flag = 4; flag >= 0; flag--) { |
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88 context->flags[flag] = sr & 1; |
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89 sr >>= 1; |
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90 } |
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91 if (context->status & (1 << 5)) { |
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92 context->aregs[8] = read_le_32(buffer + GST_68K_USP_OFFSET); |
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93 } else { |
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94 context->aregs[8] = read_le_32(buffer + GST_68K_SSP_OFFSET); |
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95 } |
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96 |
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97 return pc; |
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98 } |
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99 |
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100 uint8_t m68k_save_gst(m68k_context * context, uint32_t pc, FILE * gstfile) |
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101 { |
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102 uint8_t buffer[GST_68K_REG_SIZE]; |
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103 uint8_t * curpos = buffer; |
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104 for (int i = 0; i < 8; i++) { |
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105 write_le_32(curpos, context->dregs[i]); |
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106 curpos += sizeof(uint32_t); |
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107 } |
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108 for (int i = 0; i < 8; i++) { |
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Added support for saving savestates. Added gst savestate format test harness
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109 write_le_32(curpos, context->aregs[i]); |
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110 curpos += sizeof(uint32_t); |
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111 } |
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112 write_le_32(buffer + GST_68K_PC_OFFSET, pc); |
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Added support for saving savestates. Added gst savestate format test harness
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113 uint16_t sr = context->status << 3; |
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Added support for saving savestates. Added gst savestate format test harness
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114 for (int flag = 4; flag >= 0; flag--) { |
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115 sr <<= 1; |
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116 sr |= context->flags[flag]; |
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117 } |
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Added support for saving savestates. Added gst savestate format test harness
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118 write_le_16(buffer + GST_68K_SR_OFFSET, sr); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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119 if (context->status & (1 << 5)) { |
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Added support for saving savestates. Added gst savestate format test harness
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120 write_le_32(buffer + GST_68K_USP_OFFSET, context->aregs[8]); |
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Added support for saving savestates. Added gst savestate format test harness
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121 write_le_32(buffer + GST_68K_SSP_OFFSET, context->aregs[7]); |
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Added support for saving savestates. Added gst savestate format test harness
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122 } else { |
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|
123 write_le_32(buffer + GST_68K_USP_OFFSET, context->aregs[7]); |
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Added support for saving savestates. Added gst savestate format test harness
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124 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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125 } |
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Added support for saving savestates. Added gst savestate format test harness
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126 fseek(gstfile, GST_68K_REGS, SEEK_SET); |
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127 if (fwrite(buffer, 1, GST_68K_REG_SIZE, gstfile) != GST_68K_REG_SIZE) { |
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128 fputs("Failed to write 68K registers to savestate\n", stderr); |
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129 return 0; |
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130 } |
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131 |
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132 return 1; |
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133 } |
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134 |
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135 uint8_t z80_load_gst(z80_context * context, FILE * gstfile) |
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136 { |
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Added support for saving savestates. Added gst savestate format test harness
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137 uint8_t regdata[GST_Z80_REG_SIZE]; |
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138 fseek(gstfile, GST_Z80_REGS, SEEK_SET); |
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139 if (fread(regdata, 1, sizeof(regdata), gstfile) != sizeof(regdata)) { |
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140 fputs("Failed to read Z80 registers from savestate\n", stderr); |
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Added support for saving savestates. Added gst savestate format test harness
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141 return 0; |
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142 } |
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143 uint8_t * curpos = regdata; |
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144 uint8_t f = *(curpos++); |
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145 context->flags[ZF_C] = f & 1; |
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146 f >>= 1; |
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Added support for saving savestates. Added gst savestate format test harness
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147 context->flags[ZF_N] = f & 1; |
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148 f >>= 1; |
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149 context->flags[ZF_PV] = f & 1; |
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Added support for saving savestates. Added gst savestate format test harness
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150 f >>= 2; |
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151 context->flags[ZF_H] = f & 1; |
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152 f >>= 2; |
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153 context->flags[ZF_Z] = f & 1; |
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154 f >>= 1; |
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155 context->flags[ZF_S] = f; |
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|
156 |
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157 context->regs[Z80_A] = *curpos; |
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158 curpos += 3; |
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159 for (int reg = Z80_C; reg <= Z80_IYH; reg++) { |
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160 context->regs[reg++] = *(curpos++); |
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161 context->regs[reg] = *curpos; |
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162 curpos += 3; |
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|
163 } |
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164 context->pc = read_le_16(curpos); |
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165 curpos += 4; |
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166 context->sp = read_le_16(curpos); |
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167 curpos += 4; |
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168 f = *(curpos++); |
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169 context->alt_flags[ZF_C] = f & 1; |
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170 f >>= 1; |
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171 context->alt_flags[ZF_N] = f & 1; |
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172 f >>= 1; |
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173 context->alt_flags[ZF_PV] = f & 1; |
b7c3b2d22858
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174 f >>= 2; |
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175 context->alt_flags[ZF_H] = f & 1; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
176 f >>= 2; |
b7c3b2d22858
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|
177 context->alt_flags[ZF_Z] = f & 1; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
178 f >>= 1; |
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179 context->alt_flags[ZF_S] = f; |
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180 context->alt_regs[Z80_A] = *curpos; |
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181 curpos += 3; |
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182 for (int reg = Z80_C; reg <= Z80_H; reg++) { |
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183 context->alt_regs[reg++] = *(curpos++); |
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184 context->alt_regs[reg] = *curpos; |
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185 curpos += 3; |
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186 } |
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Added support for saving savestates. Added gst savestate format test harness
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187 context->regs[Z80_I] = *curpos; |
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188 curpos += 2; |
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189 context->iff1 = context->iff2 = *curpos; |
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Added support for saving savestates. Added gst savestate format test harness
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|
190 curpos += 2; |
668
5439ae7946ca
Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
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467
diff
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191 context->reset = !*(curpos++); |
5439ae7946ca
Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
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467
diff
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|
192 context->busreq = *curpos; |
451
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|
193 curpos += 3; |
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194 uint32_t bank = read_le_32(curpos); |
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|
195 if (bank < 0x400000) { |
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196 context->mem_pointers[1] = context->mem_pointers[2] + bank; |
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197 } else { |
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|
198 context->mem_pointers[1] = NULL; |
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|
199 } |
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Added support for saving savestates. Added gst savestate format test harness
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|
200 context->bank_reg = bank >> 15; |
962
f52cb02a1466
Fixed loading save states from menu
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|
201 uint8_t buffer[Z80_RAM_BYTES]; |
451
b7c3b2d22858
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|
202 fseek(gstfile, GST_Z80_RAM, SEEK_SET); |
962
f52cb02a1466
Fixed loading save states from menu
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203 if(fread(buffer, 1, sizeof(buffer), gstfile) != (8*1024)) { |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
204 fputs("Failed to read Z80 RAM from savestate\n", stderr); |
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|
205 return 0; |
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Added support for saving savestates. Added gst savestate format test harness
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|
206 } |
962
f52cb02a1466
Fixed loading save states from menu
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961
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|
207 for (int i = 0; i < Z80_RAM_BYTES; i++) |
f52cb02a1466
Fixed loading save states from menu
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|
208 { |
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Fixed loading save states from menu
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|
209 if (context->mem_pointers[0][i] != buffer[i]) { |
f52cb02a1466
Fixed loading save states from menu
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changeset
|
210 context->mem_pointers[0][i] = buffer[i]; |
f52cb02a1466
Fixed loading save states from menu
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|
211 z80_handle_code_write(i, context); |
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Fixed loading save states from menu
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|
212 } |
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Fixed loading save states from menu
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|
213 } |
451
b7c3b2d22858
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|
214 return 1; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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changeset
|
215 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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diff
changeset
|
216 |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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changeset
|
217 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
|
218 { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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219 uint8_t tmp_buf[CRAM_SIZE*2]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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220 fseek(state_file, GST_VDP_REGS, SEEK_SET); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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221 if (fread(context->regs, 1, VDP_REGS, state_file) != VDP_REGS) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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222 fputs("Failed to read VDP registers from savestate\n", stderr); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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223 return 0; |
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parents:
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224 } |
b7c3b2d22858
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225 context->double_res = (context->regs[REG_MODE_4] & (BIT_INTERLACE | BIT_DOUBLE_RES)) == (BIT_INTERLACE | BIT_DOUBLE_RES); |
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226 if (!context->double_res) { |
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Added support for saving savestates. Added gst savestate format test harness
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227 context->framebuf = context->oddbuf; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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228 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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229 latch_mode(context); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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230 if (fread(tmp_buf, 1, sizeof(tmp_buf), state_file) != sizeof(tmp_buf)) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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231 fputs("Failed to read CRAM from savestate\n", stderr); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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232 return 0; |
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Added support for saving savestates. Added gst savestate format test harness
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233 } |
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Added support for saving savestates. Added gst savestate format test harness
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234 for (int i = 0; i < CRAM_SIZE; i++) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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235 uint16_t value; |
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236 context->cram[i] = value = (tmp_buf[i*2+1] << 8) | tmp_buf[i*2]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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237 context->colors[i] = color_map[value & 0xEEE]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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238 context->colors[i + CRAM_SIZE] = color_map[(value & 0xEEE) | FBUF_SHADOW]; |
b7c3b2d22858
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239 context->colors[i + CRAM_SIZE*2] = color_map[(value & 0xEEE) | FBUF_HILIGHT]; |
b7c3b2d22858
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240 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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241 if (fread(tmp_buf, 2, VSRAM_SIZE, state_file) != VSRAM_SIZE) { |
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242 fputs("Failed to read VSRAM from savestate\n", stderr); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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243 return 0; |
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244 } |
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245 for (int i = 0; i < VSRAM_SIZE; i++) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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246 context->vsram[i] = (tmp_buf[i*2+1] << 8) | tmp_buf[i*2]; |
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247 } |
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Added support for saving savestates. Added gst savestate format test harness
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248 fseek(state_file, GST_VDP_MEM, SEEK_SET); |
b7c3b2d22858
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249 if (fread(context->vdpmem, 1, VRAM_SIZE, state_file) != VRAM_SIZE) { |
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Added support for saving savestates. Added gst savestate format test harness
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250 fputs("Failed to read VRAM from savestate\n", stderr); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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251 return 0; |
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252 } |
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253 return 1; |
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254 } |
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Added support for saving savestates. Added gst savestate format test harness
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255 |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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256 uint8_t vdp_save_gst(vdp_context * context, FILE * outfile) |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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257 { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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258 uint8_t tmp_buf[CRAM_SIZE*2]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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259 fseek(outfile, GST_VDP_REGS, SEEK_SET); |
b7c3b2d22858
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260 if(fwrite(context->regs, 1, VDP_REGS, outfile) != VDP_REGS) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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261 fputs("Error writing VDP regs to savestate\n", stderr); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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262 return 0; |
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Added support for saving savestates. Added gst savestate format test harness
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263 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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264 for (int i = 0; i < CRAM_SIZE; i++) |
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Added support for saving savestates. Added gst savestate format test harness
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265 { |
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266 tmp_buf[i*2] = context->cram[i]; |
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267 tmp_buf[i*2+1] = context->cram[i] >> 8; |
b7c3b2d22858
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268 } |
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Added support for saving savestates. Added gst savestate format test harness
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269 if (fwrite(tmp_buf, 1, sizeof(tmp_buf), outfile) != sizeof(tmp_buf)) { |
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270 fputs("Error writing CRAM to savestate\n", stderr); |
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Added support for saving savestates. Added gst savestate format test harness
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271 return 0; |
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Added support for saving savestates. Added gst savestate format test harness
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272 } |
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Added support for saving savestates. Added gst savestate format test harness
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273 for (int i = 0; i < VSRAM_SIZE; i++) |
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Added support for saving savestates. Added gst savestate format test harness
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274 { |
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275 tmp_buf[i*2] = context->vsram[i]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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276 tmp_buf[i*2+1] = context->vsram[i] >> 8; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
277 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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278 if (fwrite(tmp_buf, 2, VSRAM_SIZE, outfile) != VSRAM_SIZE) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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279 fputs("Error writing VSRAM to savestate\n", stderr); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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280 return 0; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
281 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
282 fseek(outfile, GST_VDP_MEM, SEEK_SET); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
283 if (fwrite(context->vdpmem, 1, VRAM_SIZE, outfile) != VRAM_SIZE) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
284 fputs("Error writing VRAM to savestate\n", stderr); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
285 return 0; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
286 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
287 return 1; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
288 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
289 |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
290 uint8_t z80_save_gst(z80_context * context, FILE * gstfile) |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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changeset
|
291 { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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292 uint8_t regdata[GST_Z80_REG_SIZE]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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293 uint8_t * curpos = regdata; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
294 memset(regdata, 0, sizeof(regdata)); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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295 uint8_t f = context->flags[ZF_S]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
296 f <<= 1; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
297 f |= context->flags[ZF_Z] ; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
298 f <<= 2; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
299 f |= context->flags[ZF_H]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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changeset
|
300 f <<= 2; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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changeset
|
301 f |= context->flags[ZF_PV]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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changeset
|
302 f <<= 1; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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changeset
|
303 f |= context->flags[ZF_N]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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changeset
|
304 f <<= 1; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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changeset
|
305 f |= context->flags[ZF_C]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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changeset
|
306 *(curpos++) = f; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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changeset
|
307 *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
|
308 |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
309 curpos += 3; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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changeset
|
310 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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diff
changeset
|
311 *(curpos++) = context->regs[reg++]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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diff
changeset
|
312 *curpos = context->regs[reg]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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|
313 curpos += 3; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
314 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
315 write_le_16(curpos, context->pc); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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changeset
|
316 curpos += 4; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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parents:
diff
changeset
|
317 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
|
318 curpos += 4; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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diff
changeset
|
319 f = context->alt_flags[ZF_S]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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parents:
diff
changeset
|
320 f <<= 1; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
321 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
|
322 f <<= 2; |
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_H]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
324 f <<= 2; |
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_PV]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
326 f <<= 1; |
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_N]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
328 f <<= 1; |
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_C]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
330 *(curpos++) = f; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
331 *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
|
332 curpos += 3; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
333 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
|
334 *(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
|
335 *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
|
336 curpos += 3; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
337 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
338 *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
|
339 curpos += 2; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
340 *curpos = context->iff1; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
341 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
|
342 *(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
|
343 *curpos = context->busreq; |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
344 curpos += 3; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
345 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
|
346 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
|
347 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
|
348 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
|
349 return 0; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
350 } |
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_RAM, 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(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
|
353 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
|
354 return 0; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
355 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
356 return 1; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
357 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
358 |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
359 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
|
360 { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
361 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
|
362 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
|
363 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
|
364 return 0; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
365 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
366 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
|
367 if (i & 0x100) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
368 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
|
369 } else { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
370 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
|
371 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
372 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
|
373 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
374 return 1; |
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 |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
377 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
|
378 { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
379 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
|
380 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
|
381 if (i & 0x100) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
382 int reg = (i & 0xFF); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
383 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
|
384 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
|
385 } else { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
386 regdata[i] = 0xFF; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
387 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
388 } else { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
389 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
|
390 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
|
391 } else { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
392 regdata[i] = 0xFF; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
393 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
394 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
395 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
396 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
|
397 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
|
398 return 0; |
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 return 1; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
401 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
402 |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
403 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
|
404 { |
962
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
405 char buffer[4096]; |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
406 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
|
407 if (!gstfile) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
408 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
|
409 goto error; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
410 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
411 char ident[5]; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
412 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
|
413 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
|
414 goto error_close; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
415 } |
708
61faa298af07
Small horizontal interrupt fixes
Michael Pavone <pavone@retrodev.com>
parents:
668
diff
changeset
|
416 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
|
417 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
|
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 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
420 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
|
421 if (!pc) { |
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 } |
962
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
424 |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
425 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
|
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 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
428 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
|
429 goto error_close; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
430 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
431 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
|
432 goto error_close; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
433 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
434 gen->ports[0].control = 0x40; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
435 gen->ports[1].control = 0x40; |
962
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
436 |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
437 fseek(gstfile, GST_68K_RAM, SEEK_SET); |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
438 for (int i = 0; i < (32*1024);) { |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
439 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
|
440 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
|
441 return 0; |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
442 } |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
443 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
|
444 uint16_t word = read_be_16(curpos); |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
445 if (word != gen->work_ram[i]) { |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
446 gen->work_ram[i] = word; |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
447 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
|
448 } |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
449 i++; |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
450 } |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
451 } |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
452 fclose(gstfile); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
453 return pc; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
454 |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
455 error_close: |
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 error: |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
458 return 0; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
459 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
460 |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
461 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
|
462 { |
962
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
463 char buffer[4096]; |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
464 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
|
465 if (!gstfile) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
466 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
|
467 goto error; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
468 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
469 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
|
470 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
|
471 goto error_close; |
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 (!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
|
474 goto error_close; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
475 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
476 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
|
477 goto error_close; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
478 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
479 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
|
480 goto error_close; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
481 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
482 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
|
483 goto error_close; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
484 } |
962
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
485 fseek(gstfile, GST_68K_RAM, SEEK_SET); |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
486 for (int i = 0; i < (32*1024);) { |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
487 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
|
488 write_be_16(curpos, gen->work_ram[i++]); |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
489 } |
f52cb02a1466
Fixed loading save states from menu
Michael Pavone <pavone@retrodev.com>
parents:
961
diff
changeset
|
490 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
|
491 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
|
492 return 0; |
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 } |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
495 return 1; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
496 |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
497 error_close: |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
498 fclose(gstfile); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
499 error: |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
500 return 0; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
501 } |