/*
* This is its own function because it's called from the gdb support
* to single-step. We only bill time if cpu_cycle reports it actually
* did something. (Which it always does, except if it hits a builtin
* breakpoint. It's essential to make the builtin breakpoints
* completely transparent, even to the extent of not wasting a single
* cycle, so it's possible to debug those race conditions where
* there's a two-instruction window for an interrupt to cause a crash.
*/
inline
void
onecycle(void)
{
if (cpu_cycle()) {
clock_tick();
}
}
int main(int argc, char* argv[]) {
int done;
deviceEntry* gpu;
ramBlock* mainRAM;
romBlock* monitorROM;
interfaceChip* userInterface;
//Start SDL
SDL_Init( SDL_INIT_EVERYTHING );
SDL_ShowCursor( SDL_DISABLE );
atexit(SDL_Quit);
printf("SDL started.\n");
gpu = gpu_create(0xFC00);
if(gpu == NULL)
return 0;
mainRAM = ram_create(0x1000, 0xF7FF);
monitorROM = rom_create(0x0000, 0x0FFF, "monitor.rom");
userInterface = interface_create(0xFFFE);
cpu_addDevice(mainRAM->device);
cpu_addDevice(monitorROM->device);
cpu_addDevice(gpu);
cpu_addDevice(userInterface->device);
cpu_reset();
while(cpu_cycle(2000)){
interface_pollKeyboard();
gpu_redraw(); //<- this is slowing execution down a lot. We should really put it on a 30-60hz timer.
}
gpu_redraw();
printf("CPU halted.", "Notice");
ram_unload();
rom_unload();
interface_unload();
gpu_unload();
cpu_unloadDevices();
SDL_Quit();
return 0;
}
int main(int argc, char **argv) {
int i;
ram_init();
cpu_reset();
load_rom("microwriter.rom");
for (i = 0; i < 10000; i++) {
cpu_cycle();
}
printf("Done.\n");
ram_free();
return 0;
}
int cpu_thread_func(void* args)
{
FILE* f;
while(cpu_running) {
if(stepping) {
printf("IP: 0x%04X, ADDRESS: 0x%04X\n", c->ip, c->address);
printf("ACC: 0x%02X, X: 0x%02X, Y: 0x%02X\n", c->acc, c->x, c->y);
printf("HLT: %s\n", c->hlt ? "true" : "false");
get_input:
printf(": ");
char in = getchar();
switch (in) {
case 'x':
case 'X':
case 'q':
case 'Q':
cpu_running = 0;
return 0;
break;
case 'd':
case 'D':
f = fopen("memdump.bin", "wb");
fwrite(c->mem, sizeof(u8), 0x10000, f);
fclose(f);
goto get_input;
break;
}
}
if(c->hlt) {
cpu_running = 0;
return 0;
}
cpu_cycle(c);
}
return 0;
}
int main(int argc, char **argv) {
if(argc < 2) {
printf("Especifique o arquivo com o codigo\n");
exit(0);
}
init_memory();
init_stack();
loadcode(argv[1]);
init_cpu();
while(cpu_cycle());
memory_dump();
free_memory();
return 0;
}