7 |
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8 |
static M6502 *R; |
static M6502 *R; |
9 |
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10 |
#define dump_R printf("# PC: %04x A:%02x P:%02x X:%02x Y:%02x S:%02x\n", R->PC.W, R->A, R->P, R->X, R->Y, R->S ); |
byte Debug6502(M6502 *R) { |
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void update_R(M6502 *R) { |
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R->A = atoi( SvPV_nolen( get_sv("M6502::A", FALSE) ) ); |
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R->P = atoi( SvPV_nolen( get_sv("M6502::P", FALSE) ) ); |
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R->X = atoi( SvPV_nolen( get_sv("M6502::X", FALSE) ) ); |
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R->Y = atoi( SvPV_nolen( get_sv("M6502::Y", FALSE) ) ); |
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R->S = atoi( SvPV_nolen( get_sv("M6502::S", FALSE) ) ); |
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R->PC.W = atoi( SvPV_nolen( get_sv("M6502::PC", FALSE) ) ); |
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R->IPeriod = atoi( SvPV_nolen( get_sv("M6502::IPeriod", FALSE) ) ); |
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// ICount IRequest IAutoReset TrapBadOps Trap Trace |
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11 |
dump_R; |
dump_R; |
12 |
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return 1; // continue emulation |
13 |
} |
} |
14 |
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15 |
/** Rd6502()/Wr6502/Op6502() *********************************/ |
/** Rd6502()/Wr6502/Op6502() *********************************/ |
20 |
/** required if there is a #define FAST_RDOP. **/ |
/** required if there is a #define FAST_RDOP. **/ |
21 |
/************************************ TO BE WRITTEN BY USER **/ |
/************************************ TO BE WRITTEN BY USER **/ |
22 |
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23 |
byte Rd6502(register word Addr) { |
byte mem(word Addr) { |
24 |
byte Value; |
byte byte; |
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Value = 0x42; |
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printf("Rd6502(%04x,%02x)\n", Addr, Value); |
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25 |
int count; |
int count; |
26 |
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debugf(("mem(%04x)", Addr)); |
27 |
dSP; |
dSP; |
28 |
ENTER; |
ENTER; |
29 |
SAVETMPS; |
SAVETMPS; |
30 |
PUSHMARK(SP); |
PUSHMARK(SP); |
31 |
XPUSHs( sv_2mortal( newSViv( Value ) ) ); |
XPUSHs( sv_2mortal( newSViv( Addr ) ) ); |
32 |
PUTBACK; |
PUTBACK; |
33 |
count = call_pv("M6502::read", G_ARRAY ); |
count = call_pv("M6502::read", G_ARRAY | G_EVAL ); |
34 |
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debugf(("got %d values", count)); |
35 |
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SPAGAIN; |
36 |
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if (SvTRUE(ERRSV)) { |
37 |
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printf("ERROR: %s", SvPV_nolen( ERRSV ) ); |
38 |
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exit(1); |
39 |
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} |
40 |
if ( count != 1 ) { |
if ( count != 1 ) { |
41 |
printf("expect 1 return value, got %d", count); |
printf("expect 1 return value, got %d", count); |
42 |
exit(1); |
exit(1); |
43 |
} |
} |
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printf("got %d values\n", count); |
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SPAGAIN; |
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44 |
SV *sv; |
SV *sv; |
45 |
sv = POPs; |
sv = POPs; |
46 |
Value = SvIV(sv); |
byte = SvIV(sv); |
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// Value = savepv(SvPV_nolen(POPs)); |
|
47 |
FREETMPS; |
FREETMPS; |
48 |
LEAVE; |
LEAVE; |
49 |
printf("Rd6502(%04x) = %02x\n", Addr, Value); |
debugf(("mem(%04x) = %02x", Addr, byte)); |
50 |
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return byte; |
51 |
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} |
52 |
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53 |
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byte Rd6502(register word Addr) { |
54 |
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byte Value; |
55 |
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// Value = mem(Addr); |
56 |
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Value = 0x42; |
57 |
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debugf(("Rd6502(%04x) = %02x", Addr, Value)); |
58 |
return Value; |
return Value; |
59 |
} |
} |
60 |
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61 |
void Wr6502(register word Addr,register byte Value) { |
void Wr6502(register word Addr,register byte Value) { |
62 |
printf("Wr6502(%04x,%02x)\n", Addr, Value); |
debugf(("Wr6502(%04x,%02x)", Addr, Value)); |
63 |
dSP; |
dSP; |
64 |
ENTER; |
ENTER; |
65 |
SAVETMPS; |
SAVETMPS; |
67 |
XPUSHs( sv_2mortal( newSViv( Addr ) ) ); |
XPUSHs( sv_2mortal( newSViv( Addr ) ) ); |
68 |
XPUSHs( sv_2mortal( newSViv( Value ) ) ); |
XPUSHs( sv_2mortal( newSViv( Value ) ) ); |
69 |
PUTBACK; |
PUTBACK; |
70 |
call_pv("M6502::write", G_DISCARD ); |
call_pv("Arch::write", G_DISCARD ); |
71 |
FREETMPS; |
FREETMPS; |
72 |
LEAVE; |
LEAVE; |
73 |
} |
} |
74 |
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|
75 |
byte Op6502(register word Addr) { |
byte Op6502(register word Addr) { |
76 |
byte Op; |
byte Op; |
77 |
Op = 0xff; |
Op = mem(Addr); |
78 |
printf("Op6502(%04x,%02x)\n", Addr, Op); |
debugf(("Op6502(%04x,%02x) PC:%04x", Addr, Op, R->PC.W)); |
79 |
dump_R; |
return Op; |
80 |
} |
} |
81 |
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82 |
/** Loop6502() ***********************************************/ |
/** Loop6502() ***********************************************/ |
86 |
/** INT_NONE, INT_IRQ, INT_NMI, or INT_QUIT to exit the **/ |
/** INT_NONE, INT_IRQ, INT_NMI, or INT_QUIT to exit the **/ |
87 |
/** emulation loop. **/ |
/** emulation loop. **/ |
88 |
/************************************ TO BE WRITTEN BY USER **/ |
/************************************ TO BE WRITTEN BY USER **/ |
89 |
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90 |
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int hw_int = INT_NONE; |
91 |
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92 |
byte Loop6502(register M6502 *R) { |
byte Loop6502(register M6502 *R) { |
93 |
printf("Loop6502\n"); |
debugf(("Loop6502")); |
94 |
dump_R; |
dump_R; |
95 |
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return hw_int; |
96 |
} |
} |
97 |
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|
98 |
/** Patch6502() **********************************************/ |
/** Patch6502() **********************************************/ |
103 |
/** or 0 if the opcode was truly illegal. **/ |
/** or 0 if the opcode was truly illegal. **/ |
104 |
/************************************ TO BE WRITTEN BY USER **/ |
/************************************ TO BE WRITTEN BY USER **/ |
105 |
byte Patch6502(register byte Op,register M6502 *R) { |
byte Patch6502(register byte Op,register M6502 *R) { |
106 |
printf("Patch6502(%02x)\n", Op); |
debugf(("Patch6502(%02x)", Op)); |
107 |
dump_R; |
dump_R; |
108 |
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hw_int = INT_QUIT; |
109 |
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return 0; |
110 |
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} |
111 |
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112 |
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void run_forever(void) { |
113 |
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printf("entered run_forever\n"); |
114 |
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115 |
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R = malloc(sizeof(M6502)); |
116 |
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if (!R) { |
117 |
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printf("can't alloc %d bytes for M6502", sizeof(M6502)); |
118 |
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exit(1); |
119 |
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} |
120 |
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121 |
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printf("reset CPU\n"); |
122 |
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Reset6502(R); |
123 |
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124 |
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printf("call Arch::init\n"); |
125 |
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dSP; |
126 |
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PUSHMARK(SP); |
127 |
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call_pv("Arch::init", G_DISCARD | G_NOARGS ); |
128 |
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FREETMPS; |
129 |
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LEAVE; |
130 |
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131 |
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int cycles = 1; |
132 |
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while ( cycles ) { |
133 |
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dSP; |
134 |
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PUSHMARK(SP); |
135 |
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call_pv("Arch::cli", G_DISCARD | G_NOARGS ); |
136 |
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pull_R; |
137 |
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FREETMPS; |
138 |
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LEAVE; |
139 |
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cycles = SvIV( get_sv("M6502::run_for", FALSE) ); |
140 |
|
if ( cycles > 0 ) { |
141 |
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printf("run CPU for %d cycles\n", cycles); |
142 |
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dump_R; |
143 |
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//Run6502(R); |
144 |
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Exec6502(R, cycles); |
145 |
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dump_R; |
146 |
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push_R; |
147 |
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printf("end of %d cycles CPU run\n", cycles); |
148 |
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} else { |
149 |
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printf("no cpu cycles set for run\n"); |
150 |
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cycles = 1; // never exit, prevents segfault |
151 |
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} |
152 |
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} |
153 |
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free(R); |
154 |
} |
} |
155 |
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|
156 |
/** |
/** |
159 |
**/ |
**/ |
160 |
|
|
161 |
int main(int argc, char **argv) { |
int main(int argc, char **argv) { |
162 |
char *command_line[] = {"", "-e", |
char *command_line[] = {"", "-e", EMU_START }; |
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"use M6502; print \"Loaded M6502 module\n\";"}; |
|
163 |
my_perl = perl_alloc(); |
my_perl = perl_alloc(); |
164 |
perl_construct(my_perl); |
perl_construct(my_perl); |
165 |
if (perl_parse(my_perl, NULL, 3, command_line, (char **)NULL)) { |
if (perl_parse(my_perl, xs_init, 3, command_line, (char **)NULL)) { |
166 |
printf("Failed to parse\n"); |
printf("Failed to parse initial: %s\n", EMU_START ); |
167 |
return 0; |
return 0; |
168 |
} |
} |
169 |
perl_run(my_perl); |
perl_run(my_perl); |
171 |
printf("Failed to execute\n"); |
printf("Failed to execute\n"); |
172 |
return 0; |
return 0; |
173 |
} else { |
} else { |
174 |
R = malloc(sizeof(M6502)); |
run_forever(); |
|
if (!R) { |
|
|
printf("can't alloc %d bytes for M6502", sizeof(M6502)); |
|
|
exit(1); |
|
|
} |
|
|
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|
|
update_R(R); |
|
|
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|
|
printf("reset CPU\n"); |
|
|
Reset6502(R); |
|
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|
|
printf("call M6502::init\n"); |
|
|
dSP; |
|
|
PUSHMARK(SP); |
|
|
call_pv("M6502::init", G_DISCARD | G_NOARGS ); |
|
|
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|
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printf("run CPU\n"); |
|
|
Run6502(R); |
|
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|
175 |
} |
} |
|
free(R); |
|
176 |
perl_destruct(my_perl); |
perl_destruct(my_perl); |
177 |
perl_free(my_perl); |
perl_free(my_perl); |
178 |
return 0; |
return 0; |