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1 | #include <stdio.h> |
2 | #include <stdlib.h> |
3 | |
4 | #include "types.h" |
5 | #include "x6502.h" |
6 | #include "fce.h" |
7 | |
8 | // asm core state |
9 | extern uint32 nes_registers[0x10]; |
10 | extern uint32 pc_base; |
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11 | extern uint8 nes_internal_ram[0x800]; |
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12 | extern uint32 timestamp_a; |
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13 | extern uint32 framecount; |
14 | static uint32 framecount_d; |
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15 | uint32 PC_prev = 0xcccccc, OP_prev = 0xcccccc; |
16 | int32 g_cnt = 0; |
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17 | |
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18 | static int pending_add_cycles = 0, pending_rebase = 0, pending_irq = 0; |
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19 | |
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20 | uint8 dreads[4]; |
21 | uint32 dwrites_c[2], dwrites_a[2]; |
22 | int dread_count_c, dread_count_a, dwrite_count_c, dwrite_count_a; |
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23 | int mapirq_cyc_c, mapirq_cyc_a; |
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24 | |
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25 | static void leave(void) |
26 | { |
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27 | printf("\nA: %02x, X: %02x, Y: %02x, S: %02x\n", X.A, X.X, X.Y, X.S); |
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28 | printf("PC = %04x, OP=%02X\n", PC_prev, OP_prev); |
29 | printf("rest = %08x\n", nes_registers[4]); |
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30 | exit(1); |
31 | } |
32 | |
33 | static void compare_state(void) |
34 | { |
35 | uint8 nes_flags; |
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36 | int i, fail = 0; |
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37 | |
38 | if ((nes_registers[0] >> 24) != X.A) { |
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39 | printf("A: %02x vs %02x\n", nes_registers[0] >> 24, X.A); |
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40 | fail = 1; |
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41 | } |
42 | |
43 | if ((nes_registers[1] & 0xff) != X.X) { |
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44 | printf("X: %02x vs %02x\n", nes_registers[1] & 0xff, X.X); |
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45 | fail = 1; |
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46 | } |
47 | |
48 | if ((nes_registers[2] & 0xff) != X.Y) { |
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49 | printf("Y: %02x vs %02x\n", nes_registers[2] & 0xff, X.Y); |
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50 | fail = 1; |
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51 | } |
52 | |
53 | if (nes_registers[3] - pc_base != X.PC) { |
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54 | printf("PC: %04x vs %04x\n", nes_registers[3] - pc_base, X.PC); |
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55 | fail = 1; |
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56 | } |
57 | |
58 | if ((nes_registers[4] >> 24) != X.S) { |
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59 | printf("S: %02x vs %02x\n", nes_registers[4] >> 24, X.S); |
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60 | fail = 1; |
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61 | } |
62 | |
63 | if (((nes_registers[4]>>8)&0xff) != X.IRQlow) { |
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64 | printf("IRQlow: %02x vs %02x\n", ((nes_registers[4]>>8)&0xff), X.IRQlow); |
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65 | fail = 1; |
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66 | } |
67 | |
68 | // NVUB DIZC |
69 | nes_flags = nes_registers[4] & 0x5d; |
70 | if ( nes_registers[5]&0x80000000) nes_flags |= 0x80; // N |
71 | if (!(nes_registers[5]&0x000000ff)) nes_flags |= 0x02; // Z |
72 | // nes_flags |= 0x20; // U, not set in C core (set only when pushing) |
73 | |
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74 | if (nes_flags != (X.P&~0x20)) { |
75 | printf("flags: %02x vs %02x\n", nes_flags, (X.P&~0x20)); |
76 | fail = 1; |
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77 | } |
78 | |
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79 | if (((int32)nes_registers[7] >> 16) != X.count) { |
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80 | printf("cycles: %i vs %i\n", (int32)nes_registers[7] >> 16, X.count); |
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81 | fail = 1; |
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82 | } |
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83 | |
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84 | if (dread_count_a != dread_count_c) { |
85 | printf("dread_count: %i vs %i\n", dread_count_a, dread_count_c); |
86 | fail = 1; |
87 | } |
88 | |
89 | if (dwrite_count_a != dwrite_count_c) { |
90 | printf("dwrite_count: %i vs %i\n", dwrite_count_a, dwrite_count_c); |
91 | fail = 1; |
92 | } |
93 | |
94 | for (i = dwrite_count_a - 1; !fail && i >= 0; i--) |
95 | if (dwrites_a[i] != dwrites_c[i]) { |
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96 | printf("dwrites[%i]: %06x vs %06x\n", dwrite_count_a, dwrites_a[i], dwrites_c[i]); |
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97 | fail = 1; |
98 | } |
99 | |
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100 | if (mapirq_cyc_a != mapirq_cyc_c) { |
101 | printf("mapirq_cyc: %i vs %i\n", mapirq_cyc_a, mapirq_cyc_c); |
102 | fail = 1; |
103 | } |
104 | |
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105 | if (timestamp_a != timestamp) { |
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106 | printf("timestamp: %u vs %u\n", timestamp_a, timestamp); |
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107 | fail = 1; |
108 | } |
109 | |
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110 | if (fail) leave(); |
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111 | } |
112 | |
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113 | #if 1 |
114 | static void compare_ram(void) |
115 | { |
116 | int i, fail = 0; |
117 | for (i = 0; i < 0x800/4; i++) |
118 | { |
119 | if (((int *)nes_internal_ram)[i] != ((int32 *)RAM)[i]) { |
120 | int u; |
121 | fail = 1; |
122 | for (u = i*4; u < i*4+4; u++) |
123 | if (nes_internal_ram[u] != RAM[u]) |
124 | printf("RAM[%03x]: %02x vs %02x\n", u, nes_internal_ram[u], RAM[u]); |
125 | } |
126 | } |
127 | |
128 | if (fail) leave(); |
129 | } |
130 | #endif |
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131 | |
132 | void TriggerIRQ_d(void) |
133 | { |
134 | printf("-- irq\n"); |
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135 | pending_irq |= 0x100; |
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136 | } |
137 | |
138 | void TriggerNMI_d(void) |
139 | { |
140 | printf("-- nmi\n"); |
141 | TriggerNMI_c(); |
142 | TriggerNMI_a(); |
143 | compare_state(); |
144 | } |
145 | |
146 | void TriggerNMINSF_d(void) |
147 | { |
148 | } |
149 | |
150 | void X6502_Run_d(int32 c) |
151 | { |
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152 | int32 cycles = c << 4; /* *16 */ |
153 | if (PAL) cycles -= c; /* *15 */ |
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154 | |
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155 | //printf("-- %06i: run(%i)\n", (int)g_cnt, (int)c); |
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156 | g_cnt += cycles; |
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157 | |
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158 | if (framecount != framecount_d) { |
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159 | compare_ram(); |
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160 | framecount_d = framecount; |
161 | } |
162 | |
163 | timestamp_a = timestamp; |
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164 | |
165 | while (g_cnt > 0) |
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166 | { |
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167 | if (pending_irq) { |
168 | if (pending_irq & 0x100) { |
169 | TriggerIRQ_c(); |
170 | TriggerIRQ_a(); |
171 | } |
172 | if (pending_irq & 0xff) { |
173 | TriggerIRQ_c(); |
174 | TriggerIRQ_a(); |
175 | X6502_IRQBegin_c(pending_irq & 0xff); |
176 | X6502_IRQBegin_a(pending_irq & 0xff); |
177 | } |
178 | pending_irq = 0; |
179 | } |
180 | |
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181 | nes_registers[7]=1<<16; |
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182 | X.count=1; |
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183 | |
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184 | dread_count_c = dread_count_a = dwrite_count_c = dwrite_count_a = 0; |
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185 | mapirq_cyc_a = mapirq_cyc_c = 0; |
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186 | //timestamp_a = timestamp; |
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187 | |
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188 | X6502_Run_c(); |
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189 | |
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190 | X6502_Run_a(); |
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191 | |
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192 | compare_state(); |
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193 | g_cnt -= 1 - X.count; |
194 | if (pending_add_cycles) { |
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195 | g_cnt -= pending_add_cycles*48; |
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196 | //X6502_AddCycles_c(pending_add_cycles); |
197 | //X6502_AddCycles_a(pending_add_cycles); |
198 | timestamp += pending_add_cycles; |
199 | timestamp_a += pending_add_cycles; |
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200 | pending_add_cycles = 0; |
201 | } |
202 | if (pending_rebase) { |
203 | X6502_Rebase_a(); |
204 | pending_rebase = 0; |
205 | } |
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206 | } |
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207 | |
208 | //printf("-- run_end\n"); |
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209 | } |
210 | |
211 | void X6502_Reset_d(void) |
212 | { |
213 | printf("-- reset\n"); |
214 | |
215 | X6502_Reset_c(); |
216 | X6502_Reset_a(); |
217 | compare_state(); |
218 | } |
219 | |
220 | void X6502_Power_d(void) |
221 | { |
222 | printf("-- power\n"); |
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223 | if (nes_internal_ram == RAM) printf("nes_internal_ram == RAM!!\n"); |
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224 | dread_count_c = dread_count_a = dwrite_count_c = dwrite_count_a = 0; |
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225 | mapirq_cyc_c = mapirq_cyc_a = 0; |
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226 | |
227 | X6502_Power_c(); |
228 | X6502_Power_a(); |
229 | compare_state(); |
230 | } |
231 | |
232 | void X6502_AddCycles_d(int x) |
233 | { |
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234 | printf("-- AddCycles(%i|%i)\n", x, x*48); |
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235 | |
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236 | pending_add_cycles = x; // *48; |
237 | // printf("can't use this in debug\n"); |
238 | // exit(1); |
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239 | //X6502_AddCycles_c(x); |
240 | //X6502_AddCycles_a(x); |
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241 | //compare_state(); |
242 | } |
243 | |
244 | void X6502_IRQBegin_d(int w) |
245 | { |
246 | printf("-- IRQBegin(%02x)\n", w); |
247 | |
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248 | // X6502_IRQBegin_c(w); |
249 | // X6502_IRQBegin_a(w); |
250 | pending_irq |= w; |
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251 | } |
252 | |
253 | void X6502_IRQEnd_d(int w) |
254 | { |
255 | printf("-- IRQEnd(%02x)\n", w); |
256 | |
257 | X6502_IRQEnd_c(w); |
258 | X6502_IRQEnd_a(w); |
259 | } |
260 | |
261 | |
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262 | void X6502_Rebase_d(void) |
263 | { |
264 | pending_rebase = 1; |
265 | } |
266 | |
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267 | |