| 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; |
| 11 | uint32 PC_prev = 0, g_cnt = 0; |
| 12 | |
| 13 | int cpu_repeat; |
| 14 | int cpu_lastval; |
| 15 | |
| 16 | static void leave(void) |
| 17 | { |
| 18 | printf("\nA: %02x, X: %02x, Y: %02x, S: %02x\n", X.A, X.X, X.Y, X.S); |
| 19 | printf("PC = %04lx, OP=%02X\n", PC_prev, (PC_prev < 0x2000) ? RAM[PC_prev&0x7ff] : ARead[PC_prev](PC_prev)); |
| 20 | exit(1); |
| 21 | } |
| 22 | |
| 23 | static void compare_state(void) |
| 24 | { |
| 25 | uint8 nes_flags; |
| 26 | int fail = 0; |
| 27 | |
| 28 | if ((nes_registers[0] >> 24) != X.A) { |
| 29 | printf("A: %02lx vs %02x\n", nes_registers[0] >> 24, X.A); |
| 30 | fail = 1; |
| 31 | } |
| 32 | |
| 33 | if ((nes_registers[1] & 0xff) != X.X) { |
| 34 | printf("X: %02lx vs %02x\n", nes_registers[1] & 0xff, X.X); |
| 35 | fail = 1; |
| 36 | } |
| 37 | |
| 38 | if ((nes_registers[2] & 0xff) != X.Y) { |
| 39 | printf("Y: %02lx vs %02x\n", nes_registers[2] & 0xff, X.Y); |
| 40 | fail = 1; |
| 41 | } |
| 42 | |
| 43 | if (nes_registers[3] - pc_base != X.PC) { |
| 44 | printf("PC: %04lx vs %04x\n", nes_registers[3] - pc_base, X.PC); |
| 45 | fail = 1; |
| 46 | } |
| 47 | |
| 48 | if ((nes_registers[4] >> 24) != X.S) { |
| 49 | printf("S: %02lx vs %02x\n", nes_registers[4] >> 24, X.S); |
| 50 | fail = 1; |
| 51 | } |
| 52 | |
| 53 | if (((nes_registers[4]>>8)&0xff) != X.IRQlow) { |
| 54 | printf("IRQlow: %02lx vs %02x\n", ((nes_registers[4]>>8)&0xff), X.IRQlow); |
| 55 | fail = 1; |
| 56 | } |
| 57 | |
| 58 | // NVUB DIZC |
| 59 | nes_flags = nes_registers[4] & 0x5d; |
| 60 | if ( nes_registers[5]&0x80000000) nes_flags |= 0x80; // N |
| 61 | if (!(nes_registers[5]&0x000000ff)) nes_flags |= 0x02; // Z |
| 62 | // nes_flags |= 0x20; // U, not set in C core (set only when pushing) |
| 63 | |
| 64 | if (nes_flags != (X.P&~0x20)) { |
| 65 | printf("flags: %02x vs %02x\n", nes_flags, (X.P&~0x20)); |
| 66 | fail = 1; |
| 67 | } |
| 68 | |
| 69 | if ((int32)nes_registers[7] != X.count) { |
| 70 | printf("cycles: %li vs %li\n", (int32)nes_registers[7], X.count); |
| 71 | fail = 1; |
| 72 | } |
| 73 | |
| 74 | if (fail) leave(); |
| 75 | } |
| 76 | |
| 77 | |
| 78 | void TriggerIRQ_d(void) |
| 79 | { |
| 80 | printf("-- irq\n"); |
| 81 | TriggerIRQ_c(); |
| 82 | TriggerIRQ_a(); |
| 83 | compare_state(); |
| 84 | } |
| 85 | |
| 86 | void TriggerNMI_d(void) |
| 87 | { |
| 88 | printf("-- nmi\n"); |
| 89 | TriggerNMI_c(); |
| 90 | TriggerNMI_a(); |
| 91 | compare_state(); |
| 92 | } |
| 93 | |
| 94 | void TriggerNMINSF_d(void) |
| 95 | { |
| 96 | } |
| 97 | |
| 98 | void X6502_Run_d(int32 c) |
| 99 | { |
| 100 | int32 cycles = c << 4; /* *16 */ \ |
| 101 | if (PAL) cycles -= c; /* *15 */ \ |
| 102 | |
| 103 | //printf("-- %06i: run(%i)\n", (int)g_cnt, (int)c); |
| 104 | g_cnt += c; |
| 105 | |
| 106 | while (cycles > 0) |
| 107 | { |
| 108 | PC_prev = X.PC; |
| 109 | nes_registers[7]=1; |
| 110 | X.count=1; |
| 111 | |
| 112 | cpu_repeat = 0; |
| 113 | X6502_Run_c(); |
| 114 | |
| 115 | cpu_repeat = 1; |
| 116 | X6502_Run_a(); |
| 117 | |
| 118 | compare_state(); |
| 119 | cycles -= 1 - X.count; |
| 120 | } |
| 121 | |
| 122 | //printf("-- run_end\n"); |
| 123 | } |
| 124 | |
| 125 | void X6502_Reset_d(void) |
| 126 | { |
| 127 | printf("-- reset\n"); |
| 128 | |
| 129 | X6502_Reset_c(); |
| 130 | X6502_Reset_a(); |
| 131 | compare_state(); |
| 132 | } |
| 133 | |
| 134 | void X6502_Power_d(void) |
| 135 | { |
| 136 | printf("-- power\n"); |
| 137 | |
| 138 | X6502_Power_c(); |
| 139 | X6502_Power_a(); |
| 140 | compare_state(); |
| 141 | } |
| 142 | |
| 143 | void X6502_AddCycles_d(int x) |
| 144 | { |
| 145 | printf("-- AddCycles(%i|%i)\n", x, x*48); |
| 146 | |
| 147 | printf("can't use this in debug\n"); |
| 148 | exit(1); |
| 149 | //X6502_AddCycles_c(x); |
| 150 | //X6502_AddCycles_a(x); |
| 151 | //compare_state(); |
| 152 | } |
| 153 | |
| 154 | void X6502_IRQBegin_d(int w) |
| 155 | { |
| 156 | printf("-- IRQBegin(%02x)\n", w); |
| 157 | |
| 158 | X6502_IRQBegin_c(w); |
| 159 | X6502_IRQBegin_a(w); |
| 160 | } |
| 161 | |
| 162 | void X6502_IRQEnd_d(int w) |
| 163 | { |
| 164 | printf("-- IRQEnd(%02x)\n", w); |
| 165 | |
| 166 | X6502_IRQEnd_c(w); |
| 167 | X6502_IRQEnd_a(w); |
| 168 | } |
| 169 | |
| 170 | |
| 171 | |