| 1 |
#include <EXTERN.h> |
| 2 |
#include <perl.h> |
| 3 |
#include "M6502.h" |
| 4 |
#include "config.h" |
| 5 |
|
| 6 |
static PerlInterpreter *my_perl; |
| 7 |
|
| 8 |
static M6502 *R; |
| 9 |
|
| 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 ); |
| 11 |
|
| 12 |
void update_R(M6502 *R) { |
| 13 |
R->A = atoi( SvPV_nolen( get_sv("M6502::A", FALSE) ) ); |
| 14 |
R->P = atoi( SvPV_nolen( get_sv("M6502::P", FALSE) ) ); |
| 15 |
R->X = atoi( SvPV_nolen( get_sv("M6502::X", FALSE) ) ); |
| 16 |
R->Y = atoi( SvPV_nolen( get_sv("M6502::Y", FALSE) ) ); |
| 17 |
R->S = atoi( SvPV_nolen( get_sv("M6502::S", FALSE) ) ); |
| 18 |
R->PC.W = atoi( SvPV_nolen( get_sv("M6502::PC", FALSE) ) ); |
| 19 |
R->IPeriod = atoi( SvPV_nolen( get_sv("M6502::IPeriod", FALSE) ) ); |
| 20 |
// ICount IRequest IAutoReset TrapBadOps Trap Trace |
| 21 |
dump_R; |
| 22 |
} |
| 23 |
|
| 24 |
/** Rd6502()/Wr6502/Op6502() *********************************/ |
| 25 |
/** These functions are called when access to RAM occurs. **/ |
| 26 |
/** They allow to control memory access. Op6502 is the same **/ |
| 27 |
/** as Rd6502, but used to read *opcodes* only, when many **/ |
| 28 |
/** checks can be skipped to make it fast. It is only **/ |
| 29 |
/** required if there is a #define FAST_RDOP. **/ |
| 30 |
/************************************ TO BE WRITTEN BY USER **/ |
| 31 |
|
| 32 |
byte Rd6502(register word Addr) { |
| 33 |
byte Value; |
| 34 |
Value = 0x42; |
| 35 |
printf("Rd6502(%04x,%02x)\n", Addr, Value); |
| 36 |
} |
| 37 |
|
| 38 |
void Wr6502(register word Addr,register byte Value) { |
| 39 |
printf("Wr6502(%04x,%02x)\n", Addr, Value); |
| 40 |
} |
| 41 |
|
| 42 |
byte Op6502(register word Addr) { |
| 43 |
byte Op; |
| 44 |
Op = 0xff; |
| 45 |
printf("Op6502(%04x,%02x)\n", Addr, Op); |
| 46 |
dump_R; |
| 47 |
} |
| 48 |
|
| 49 |
/** Loop6502() ***********************************************/ |
| 50 |
/** 6502 emulation calls this function periodically to **/ |
| 51 |
/** check if the system hardware requires any interrupts. **/ |
| 52 |
/** This function must return one of following values: **/ |
| 53 |
/** INT_NONE, INT_IRQ, INT_NMI, or INT_QUIT to exit the **/ |
| 54 |
/** emulation loop. **/ |
| 55 |
/************************************ TO BE WRITTEN BY USER **/ |
| 56 |
byte Loop6502(register M6502 *R) { |
| 57 |
printf("Loop6502\n"); |
| 58 |
dump_R; |
| 59 |
} |
| 60 |
|
| 61 |
/** Patch6502() **********************************************/ |
| 62 |
/** Emulation calls this function when it encounters an **/ |
| 63 |
/** unknown opcode. This can be used to patch the code to **/ |
| 64 |
/** emulate BIOS calls, such as disk and tape access. The **/ |
| 65 |
/** function should return 1 if the exception was handled, **/ |
| 66 |
/** or 0 if the opcode was truly illegal. **/ |
| 67 |
/************************************ TO BE WRITTEN BY USER **/ |
| 68 |
byte Patch6502(register byte Op,register M6502 *R) { |
| 69 |
printf("Patch6502(%02x)\n", Op); |
| 70 |
dump_R; |
| 71 |
} |
| 72 |
|
| 73 |
/** |
| 74 |
* main code |
| 75 |
* |
| 76 |
**/ |
| 77 |
|
| 78 |
int main(int argc, char **argv) { |
| 79 |
char *command_line[] = {"", "-e", |
| 80 |
"use M6502; print \"Loaded M6502 module\n\";"}; |
| 81 |
my_perl = perl_alloc(); |
| 82 |
perl_construct(my_perl); |
| 83 |
if (perl_parse(my_perl, NULL, 3, command_line, (char **)NULL)) { |
| 84 |
printf("Failed to parse\n"); |
| 85 |
return 0; |
| 86 |
} |
| 87 |
perl_run(my_perl); |
| 88 |
if (SvTRUE(ERRSV)) { |
| 89 |
printf("Failed to execute\n"); |
| 90 |
return 0; |
| 91 |
} else { |
| 92 |
R = malloc(sizeof(M6502)); |
| 93 |
if (!R) { |
| 94 |
printf("can't alloc %d bytes for M6502", sizeof(M6502)); |
| 95 |
exit(1); |
| 96 |
} |
| 97 |
|
| 98 |
update_R(R); |
| 99 |
|
| 100 |
printf("reset CPU\n"); |
| 101 |
Reset6502(R); |
| 102 |
|
| 103 |
printf("call M6502::init\n"); |
| 104 |
dSP; |
| 105 |
PUSHMARK(SP); |
| 106 |
call_pv("M6502::init", G_DISCARD | G_NOARGS ); |
| 107 |
|
| 108 |
printf("run CPU\n"); |
| 109 |
Run6502(R); |
| 110 |
|
| 111 |
} |
| 112 |
free(R); |
| 113 |
perl_destruct(my_perl); |
| 114 |
perl_free(my_perl); |
| 115 |
return 0; |
| 116 |
} |
Parent Directory
| 
Revision Log