static void Cleanup(void)
{
rom_unload();
if(NGPGfx != NULL)
{
delete NGPGfx;
NGPGfx = NULL;
}
}
void unloadrom()
{
// if(config.autostates)
// savestate();
log_message("unloadrom: unloading rom\n");
nes_unload();
if(rom) {
if(rom->diskdata)
savediskstate();
rom_unload(rom);
rom = 0;
}
}
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;
}
rom_t *rom_load(const char *filename)
{
int fd; //file handle
rom_t *ret = 0; //rom data struct
u8 header[16];
char *p;
//parse out the rom filename
if((p = strrchr(filename,'/')) == 0) {
if((p = strrchr(filename,'\\')) == 0) {
p = (char*)filename;
}
else
p++;
}
else
p++;
//allocate memory for rom struct
ret = (rom_t*)malloc(sizeof(rom_t));
//zero the rom struct
memset(ret,0,sizeof(rom_t));
//copy the rom filename
strcpy(ret->filename,p);
//try to open the file
if((fd = file_open((char*)filename,"rb")) == -1) {
log_message("rom_load: cannot open rom image\n");
rom_unload(ret);
return(0);
}
log_message("loading '%s'...\n",ret->filename);
//read in the file header
if(file_read(fd,(u8*)header,16) != 16) {
log_message("rom_load: error reading file header\n");
rom_unload(ret);
file_close(fd);
return(0);
}
//hack for ps2
#ifdef PS2
file_close(fd);
fd = file_open((char*)filename,"rb");
#else
//return to beginning of file
file_seek(fd,0,SEEK_SET);
#endif
//if the file is a state save, then try to find the rom
if(memcmp(header,nstident,5) == 0) {
// if(rom_load_state(fd,ret) == 0) {
// rom_unload(ret);
log_message("loading states as roms not implemented...yet\n");
file_close(fd);
return(0);
// }
}
//see if it is an ines rom image
else if(memcmp(header,inesident,4) == 0) {
//check header for ines 2.0 or old ines format
if((((header[7] & 0xC) == 8) && (rom_load_ines20(fd,ret) == 0)) ||
(rom_load_ines(fd,ret) == 0)) {
file_close(fd);
return(0);
}
}
//if the file is an fds disk image
else if(memcmp(header,fdsident,4) == 0) {
if(rom_load_fds(fd,ret) == 0) {
file_close(fd);
return(0);
}
}
//if the file is an unif image
else if(memcmp(header,unifident,4) == 0) {
if(rom_load_unif(fd,ret) == 0) {
file_close(fd);
return(0);
}
}
//if the file is a nsf music file
else if(memcmp(header,nsfident,5) == 0) {
if(rom_load_nsf(fd,ret) == 0) {
file_close(fd);
return(0);
}
}
//unknown file type
else {
log_message("bad image\n");
file_close(fd);
return(0);
}
log_message("nes image '%s' loaded ok\n",ret->filename);
//close the file and return
file_close(fd);
return(ret);
}
static void CloseGame(void)
{
rom_unload();
}
