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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 | uint32 PC_prev = 0, g_cnt = 0; |
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12 | |
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13 | int cpu_repeat; |
14 | int cpu_lastval; |
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15 | |
16 | static void leave(void) |
17 | { |
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18 | printf("\nA: %02x, X: %02x, Y: %02x, S: %02x\n", X.A, X.X, X.Y, X.S); |
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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; |
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26 | int fail = 0; |
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27 | |
28 | if ((nes_registers[0] >> 24) != X.A) { |
29 | printf("A: %02lx vs %02x\n", nes_registers[0] >> 24, X.A); |
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30 | fail = 1; |
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31 | } |
32 | |
33 | if ((nes_registers[1] & 0xff) != X.X) { |
34 | printf("X: %02lx vs %02x\n", nes_registers[1] & 0xff, X.X); |
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35 | fail = 1; |
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36 | } |
37 | |
38 | if ((nes_registers[2] & 0xff) != X.Y) { |
39 | printf("Y: %02lx vs %02x\n", nes_registers[2] & 0xff, X.Y); |
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40 | fail = 1; |
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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); |
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45 | fail = 1; |
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46 | } |
47 | |
48 | if ((nes_registers[4] >> 24) != X.S) { |
49 | printf("S: %02lx vs %02x\n", nes_registers[4] >> 24, X.S); |
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50 | fail = 1; |
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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); |
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55 | fail = 1; |
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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 | |
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64 | if (nes_flags != (X.P&~0x20)) { |
65 | printf("flags: %02x vs %02x\n", nes_flags, (X.P&~0x20)); |
66 | fail = 1; |
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67 | } |
68 | |
69 | if ((int32)nes_registers[7] != X.count) { |
70 | printf("cycles: %li vs %li\n", (int32)nes_registers[7], X.count); |
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71 | fail = 1; |
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72 | } |
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73 | |
74 | if (fail) leave(); |
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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 | |
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103 | //printf("-- %06i: run(%i)\n", (int)g_cnt, (int)c); |
104 | g_cnt += c; |
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105 | |
106 | while (cycles > 0) |
107 | { |
108 | PC_prev = X.PC; |
109 | nes_registers[7]=1; |
110 | X.count=1; |
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111 | |
112 | cpu_repeat = 0; |
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113 | X6502_Run_c(); |
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114 | |
115 | cpu_repeat = 1; |
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116 | X6502_Run_a(); |
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117 | |
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118 | compare_state(); |
119 | cycles -= 1 - X.count; |
120 | } |
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121 | |
122 | //printf("-- run_end\n"); |
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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 | { |
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145 | printf("-- AddCycles(%i|%i)\n", x, x*48); |
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146 | |
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147 | printf("can't use this in debug\n"); |
148 | exit(1); |
149 | //X6502_AddCycles_c(x); |
150 | //X6502_AddCycles_a(x); |
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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 | |