| 97 |
|
struct Library *DiskBase = NULL; |
| 98 |
|
|
| 99 |
|
struct Task *MainTask; // Our task |
| 100 |
< |
uint32 ScratchMem = NULL; // Scratch memory for Mac ROM writes |
| 100 |
> |
uint8 *ScratchMem = NULL; // Scratch memory for Mac ROM writes |
| 101 |
|
APTR OldTrapHandler = NULL; // Old trap handler |
| 102 |
|
APTR OldExceptionHandler = NULL; // Old exception handler |
| 103 |
|
BYTE IRQSig = -1; // "Interrupt" signal number |
| 125 |
|
extern "C" void IllInstrHandler(trap_regs *regs); |
| 126 |
|
extern "C" void PrivViolHandler(trap_regs *regs); |
| 127 |
|
extern "C" void quit_emulator(void); |
| 128 |
+ |
extern "C" void AsmTriggerNMI(void); |
| 129 |
|
uint16 EmulatedSR; // Emulated SR (supervisor bit and interrupt mask) |
| 130 |
|
|
| 131 |
|
|
| 138 |
|
* Main program |
| 139 |
|
*/ |
| 140 |
|
|
| 141 |
< |
int main(void) |
| 141 |
> |
int main(int argc, char **argv) |
| 142 |
|
{ |
| 143 |
|
// Initialize variables |
| 144 |
|
RAMBaseHost = NULL; |
| 188 |
|
CyberGfxBase = OpenLibrary((UBYTE *)"cybergraphics.library", 2); |
| 189 |
|
|
| 190 |
|
// Read preferences |
| 191 |
< |
PrefsInit(); |
| 191 |
> |
PrefsInit(argc, argv); |
| 192 |
|
|
| 193 |
|
// Open AHI |
| 194 |
|
ahi_port = CreateMsgPort(); |
| 229 |
|
TimerBase = (struct Library *)timereq->tr_node.io_Device; |
| 230 |
|
|
| 231 |
|
// Allocate scratch memory |
| 232 |
< |
ScratchMem = (uint32)AllocMem(SCRATCH_MEM_SIZE, MEMF_PUBLIC); |
| 232 |
> |
ScratchMem = (uint8 *)AllocMem(SCRATCH_MEM_SIZE, MEMF_PUBLIC); |
| 233 |
|
if (ScratchMem == NULL) { |
| 234 |
|
ErrorAlert(GetString(STR_NO_MEM_ERR)); |
| 235 |
|
QuitEmulator(); |
| 243 |
|
WarningAlert(GetString(STR_SMALL_RAM_WARN)); |
| 244 |
|
RAMSize = 1024*1024; |
| 245 |
|
} |
| 246 |
< |
RAMBaseHost = (uint8 *)AllocMem(RAMSize + 0x100000, MEMF_PUBLIC); |
| 246 |
> |
RAMBaseHost = (uint8 *)AllocVec(RAMSize + 0x100000, MEMF_PUBLIC); |
| 247 |
|
if (RAMBaseHost == NULL) { |
| 248 |
< |
ErrorAlert(GetString(STR_NO_MEM_ERR)); |
| 249 |
< |
QuitEmulator(); |
| 248 |
> |
uint32 newRAMSize = AvailMem(MEMF_LARGEST) - 0x100000; |
| 249 |
> |
char xText[120]; |
| 250 |
> |
|
| 251 |
> |
sprintf(xText, GetString(STR_NOT_ENOUGH_MEM_WARN), RAMSize, newRAMSize); |
| 252 |
> |
|
| 253 |
> |
if (ChoiceAlert(xText, "Use", "Quit") != 1) |
| 254 |
> |
QuitEmulator(); |
| 255 |
> |
|
| 256 |
> |
RAMSize = newRAMSize; |
| 257 |
> |
RAMBaseHost = (uint8 *)AllocVec(RAMSize + 0x100000, MEMF_PUBLIC); |
| 258 |
> |
if (RAMBaseHost == NULL) { |
| 259 |
> |
ErrorAlert(GetString(STR_NO_MEM_ERR)); |
| 260 |
> |
QuitEmulator(); |
| 261 |
> |
} |
| 262 |
|
} |
| 263 |
|
RAMBaseMac = (uint32)RAMBaseHost; |
| 264 |
|
D(bug("Mac RAM starts at %08lx\n", RAMBaseHost)); |
| 326 |
|
// Set task priority to -1 so we don't use all processing time |
| 327 |
|
SetTaskPri(MainTask, -1); |
| 328 |
|
|
| 329 |
+ |
WriteMacInt32(0xbff, 0); // MacsBugFlags |
| 330 |
+ |
|
| 331 |
|
// Swap stack to Mac RAM area |
| 332 |
|
stack_swap.stk_Lower = RAMBaseHost; |
| 333 |
|
stack_swap.stk_Upper = (ULONG)RAMBaseHost + RAMSize; |
| 362 |
|
|
| 363 |
|
void QuitEmulator(void) |
| 364 |
|
{ |
| 365 |
+ |
// Stop 60Hz thread |
| 366 |
+ |
if (tick_proc) { |
| 367 |
+ |
SetSignal(0, SIGF_SINGLE); |
| 368 |
+ |
tick_proc_active = false; |
| 369 |
+ |
Wait(SIGF_SINGLE); |
| 370 |
+ |
} |
| 371 |
+ |
|
| 372 |
|
// Restore stack |
| 373 |
|
if (stack_swapped) { |
| 374 |
|
stack_swapped = false; |
| 382 |
|
FreeSignal(IRQSig); |
| 383 |
|
} |
| 384 |
|
|
| 363 |
– |
// Stop 60Hz thread |
| 364 |
– |
if (tick_proc) { |
| 365 |
– |
SetSignal(0, SIGF_SINGLE); |
| 366 |
– |
tick_proc_active = false; |
| 367 |
– |
Wait(SIGF_SINGLE); |
| 368 |
– |
} |
| 369 |
– |
|
| 385 |
|
// Remove trap handler |
| 386 |
|
MainTask->tc_TrapCode = OldTrapHandler; |
| 387 |
|
|
| 390 |
|
|
| 391 |
|
// Delete RAM/ROM area |
| 392 |
|
if (RAMBaseHost) |
| 393 |
< |
FreeMem(RAMBaseHost, RAMSize + 0x100000); |
| 393 |
> |
FreeVec(RAMBaseHost); |
| 394 |
|
|
| 395 |
|
// Delete scratch memory area |
| 396 |
|
if (ScratchMem) |
| 468 |
|
Signal(MainTask, IRQSigMask); |
| 469 |
|
} |
| 470 |
|
|
| 471 |
+ |
void TriggerNMI(void) |
| 472 |
+ |
{ |
| 473 |
+ |
AsmTriggerNMI(); |
| 474 |
+ |
} |
| 475 |
+ |
|
| 476 |
|
|
| 477 |
|
/* |
| 478 |
|
* 60Hz thread |
| 515 |
|
if (++tick_counter > 60) { |
| 516 |
|
tick_counter = 0; |
| 517 |
|
WriteMacInt32(0x20c, TimerDateTime()); |
| 518 |
+ |
SetInterruptFlag(INTFLAG_1HZ); |
| 519 |
+ |
TriggerInterrupt(); |
| 520 |
|
} |
| 521 |
|
|
| 522 |
|
// Trigger 60Hz interrupt |
| 630 |
|
EmulatedSR |= 0x0700; |
| 631 |
|
|
| 632 |
|
// Call opcode routine |
| 633 |
< |
EmulOp(*(uint16 *)(r->pc), (M68kRegisters *)r); |
| 633 |
> |
EmulOp(opcode, (M68kRegisters *)r); |
| 634 |
|
r->pc += 2; |
| 635 |
|
|
| 636 |
|
// Restore interrupts |
