5 |
|
|
6 |
#if DEBUGF |
#if DEBUGF |
7 |
#define debugf(x) do { \ |
#define debugf(x) do { \ |
8 |
|
PerlIO_stdoutf("#> "); \ |
9 |
PerlIO_stdoutf x ; \ |
PerlIO_stdoutf x ; \ |
10 |
} while (0) |
} while (0) |
11 |
#else |
#else |
22 |
#define dump_R |
#define dump_R |
23 |
#endif |
#endif |
24 |
|
|
25 |
void update_R(M6502 *R) { |
void pull_R(M6502 *R) { |
26 |
R->A = SvIV( get_sv("M6502::A", FALSE) ); |
R->A = SvIV( get_sv("M6502::A", FALSE) ); |
|
printf("--%d", get_sv("M6502::A", FALSE) ); |
|
27 |
R->P = SvIV( get_sv("M6502::P", FALSE) ); |
R->P = SvIV( get_sv("M6502::P", FALSE) ); |
28 |
R->X = atoi( SvPV_nolen( get_sv("M6502::X", FALSE) ) ); |
R->X = SvIV( get_sv("M6502::X", FALSE) ); |
29 |
R->Y = atoi( SvPV_nolen( get_sv("M6502::Y", FALSE) ) ); |
R->Y = SvIV( get_sv("M6502::Y", FALSE) ); |
30 |
R->S = atoi( SvPV_nolen( get_sv("M6502::S", FALSE) ) ); |
R->S = SvIV( get_sv("M6502::S", FALSE) ); |
31 |
R->PC.W = atoi( SvPV_nolen( get_sv("M6502::PC", FALSE) ) ); |
R->PC.W = SvIV( get_sv("M6502::PC", FALSE) ); |
32 |
R->IPeriod = atoi( SvPV_nolen( get_sv("M6502::IPeriod", FALSE) ) ); |
R->IPeriod = SvIV( get_sv("M6502::IPeriod", FALSE) ); |
33 |
// ICount IRequest IAutoReset TrapBadOps Trap Trace |
R->IRequest = SvIV( get_sv("M6502::IRequest", FALSE) ); |
34 |
|
R->IAutoReset = SvIV( get_sv("M6502::IAutoReset", FALSE) ); |
35 |
|
R->TrapBadOps = SvIV( get_sv("M6502::TrapBadOps", FALSE) ); |
36 |
|
R->Trap = SvIV( get_sv("M6502::Trap", FALSE) ); |
37 |
|
R->Trace = SvIV( get_sv("M6502::Trace", FALSE) ); |
38 |
|
printf("pull_R finished\n"); |
39 |
dump_R; |
dump_R; |
40 |
} |
} |
41 |
|
|
42 |
|
void push_R(M6502 *R) { |
43 |
|
dSP; |
44 |
|
ENTER; |
45 |
|
SAVETMPS; |
46 |
|
PUSHMARK(SP); |
47 |
|
XPUSHs( sv_2mortal( newSViv( R->A ) ) ); |
48 |
|
XPUSHs( sv_2mortal( newSViv( R->P ) ) ); |
49 |
|
XPUSHs( sv_2mortal( newSViv( R->X ) ) ); |
50 |
|
XPUSHs( sv_2mortal( newSViv( R->Y ) ) ); |
51 |
|
XPUSHs( sv_2mortal( newSViv( R->S ) ) ); |
52 |
|
XPUSHs( sv_2mortal( newSViv( R->PC.W ) ) ); |
53 |
|
XPUSHs( sv_2mortal( newSViv( R->IPeriod ) ) ); |
54 |
|
XPUSHs( sv_2mortal( newSViv( R->ICount ) ) ); |
55 |
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XPUSHs( sv_2mortal( newSViv( R->IRequest ) ) ); |
56 |
|
XPUSHs( sv_2mortal( newSViv( R->IAutoReset ) ) ); |
57 |
|
XPUSHs( sv_2mortal( newSViv( R->TrapBadOps ) ) ); |
58 |
|
XPUSHs( sv_2mortal( newSViv( R->Trap ) ) ); |
59 |
|
XPUSHs( sv_2mortal( newSViv( R->Trace ) ) ); |
60 |
|
PUTBACK; |
61 |
|
call_pv("M6502::push_R", G_DISCARD ); |
62 |
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printf("push_R called\n"); |
63 |
|
dump_R; |
64 |
|
FREETMPS; |
65 |
|
LEAVE; |
66 |
|
} |
67 |
|
|
68 |
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byte Debug6502(M6502 *R) { |
69 |
|
dump_R; |
70 |
|
return 1; // continue emulation |
71 |
|
} |
72 |
|
|
73 |
/** Rd6502()/Wr6502/Op6502() *********************************/ |
/** Rd6502()/Wr6502/Op6502() *********************************/ |
74 |
/** These functions are called when access to RAM occurs. **/ |
/** These functions are called when access to RAM occurs. **/ |
75 |
/** They allow to control memory access. Op6502 is the same **/ |
/** They allow to control memory access. Op6502 is the same **/ |
127 |
byte Op6502(register word Addr) { |
byte Op6502(register word Addr) { |
128 |
byte Op; |
byte Op; |
129 |
Op = mem(Addr); |
Op = mem(Addr); |
130 |
debugf(("Op6502(%04x,%02x)\n", Addr, Op)); |
debugf(("Op6502(%04x,%02x) PC:%04x\n", Addr, Op, R->PC.W)); |
131 |
dump_R; |
return Op; |
132 |
} |
} |
133 |
|
|
134 |
/** Loop6502() ***********************************************/ |
/** Loop6502() ***********************************************/ |
138 |
/** INT_NONE, INT_IRQ, INT_NMI, or INT_QUIT to exit the **/ |
/** INT_NONE, INT_IRQ, INT_NMI, or INT_QUIT to exit the **/ |
139 |
/** emulation loop. **/ |
/** emulation loop. **/ |
140 |
/************************************ TO BE WRITTEN BY USER **/ |
/************************************ TO BE WRITTEN BY USER **/ |
141 |
|
|
142 |
|
int hw_int = INT_NONE; |
143 |
|
|
144 |
byte Loop6502(register M6502 *R) { |
byte Loop6502(register M6502 *R) { |
145 |
debugf(("Loop6502\n")); |
debugf(("Loop6502\n")); |
146 |
dump_R; |
dump_R; |
147 |
return INT_NONE; |
return hw_int; |
148 |
} |
} |
149 |
|
|
150 |
/** Patch6502() **********************************************/ |
/** Patch6502() **********************************************/ |
157 |
byte Patch6502(register byte Op,register M6502 *R) { |
byte Patch6502(register byte Op,register M6502 *R) { |
158 |
debugf(("Patch6502(%02x)\n", Op)); |
debugf(("Patch6502(%02x)\n", Op)); |
159 |
dump_R; |
dump_R; |
160 |
|
hw_int = INT_QUIT; |
161 |
return 0; |
return 0; |
162 |
} |
} |
163 |
|
|
164 |
|
void run_forever(void) { |
165 |
|
printf("entered run_forever\n"); |
166 |
|
|
167 |
|
R = malloc(sizeof(M6502)); |
168 |
|
if (!R) { |
169 |
|
printf("can't alloc %d bytes for M6502", sizeof(M6502)); |
170 |
|
exit(1); |
171 |
|
} |
172 |
|
|
173 |
|
printf("reset CPU\n"); |
174 |
|
Reset6502(R); |
175 |
|
|
176 |
|
printf("call Arch::init\n"); |
177 |
|
dSP; |
178 |
|
PUSHMARK(SP); |
179 |
|
call_pv("Arch::init", G_DISCARD | G_NOARGS ); |
180 |
|
FREETMPS; |
181 |
|
LEAVE; |
182 |
|
|
183 |
|
int cycles = 1; |
184 |
|
while ( cycles ) { |
185 |
|
dSP; |
186 |
|
PUSHMARK(SP); |
187 |
|
call_pv("Arch::cli", G_DISCARD | G_NOARGS ); |
188 |
|
pull_R(R); |
189 |
|
FREETMPS; |
190 |
|
LEAVE; |
191 |
|
cycles = SvIV( get_sv("M6502::run_for", FALSE) ); |
192 |
|
if ( cycles > 0 ) { |
193 |
|
printf("run CPU for %d cycles\n", cycles); |
194 |
|
dump_R; |
195 |
|
//Run6502(R); |
196 |
|
Exec6502(R, cycles); |
197 |
|
dump_R; |
198 |
|
push_R(R); |
199 |
|
printf("end of %d cycles CPU run\n", cycles); |
200 |
|
} else { |
201 |
|
printf("no cpu cycles set for run\n"); |
202 |
|
cycles = 1; // never exit, prevents segfault |
203 |
|
} |
204 |
|
} |
205 |
|
free(R); |
206 |
|
} |
207 |
|
|
208 |
/** |
/** |
209 |
* main code |
* main code |
210 |
* |
* |
223 |
printf("Failed to execute\n"); |
printf("Failed to execute\n"); |
224 |
return 0; |
return 0; |
225 |
} else { |
} else { |
226 |
R = malloc(sizeof(M6502)); |
run_forever(); |
|
if (!R) { |
|
|
printf("can't alloc %d bytes for M6502", sizeof(M6502)); |
|
|
exit(1); |
|
|
} |
|
|
|
|
|
printf("reset CPU\n"); |
|
|
Reset6502(R); |
|
|
|
|
|
printf("call Arch::init\n"); |
|
|
dSP; |
|
|
PUSHMARK(SP); |
|
|
call_pv("Arch::init", G_DISCARD | G_NOARGS ); |
|
|
|
|
|
update_R(R); |
|
|
printf("run CPU\n"); |
|
|
Run6502(R); |
|
|
|
|
227 |
} |
} |
|
free(R); |
|
228 |
perl_destruct(my_perl); |
perl_destruct(my_perl); |
229 |
perl_free(my_perl); |
perl_free(my_perl); |
230 |
return 0; |
return 0; |