static void* nes_thread_proc(void *param)
{
NES *nes = (NES*)param;
int totalpclk, nmi, irq;
while (!nes->thread_exit)
{
//++ for run/pause ++//
if (!nes->isrunning)
{
nes->ispaused = 1;
nes->ppu.vdev->dequeue(nes->ppu.vctxt, NULL, NULL);
nes->ppu.vdev->enqueue(nes->ppu.vctxt);
continue;
}
//-- for run/pause --//
//++ for replay playing ++//
if (!replay_progress(&(nes->replay)) && nes->request_reset == 0)
{
nes->ppu.vdev->dequeue(nes->ppu.vctxt, NULL, NULL);
nes->ppu.vdev->enqueue(nes->ppu.vctxt);
continue;
}
//-- for replay playing --//
//++ for nes reset ++//
if (nes->request_reset == 1)
{
nes->request_reset = 0;
nes_do_reset(nes);
}
//-- for nes reset --//
//++ run cpu & apu & ppu
do {
cpu_run_pclk(&(nes->cpu)); // run cpu
ppu_run_pclk(&(nes->ppu)); // run ppu
apu_run_pclk(&(nes->apu)); // run apu
//+ for cpu nmi & irq
nmi = nes->ppu.pinvbl;
irq = !(nes->apu.regs[0x0015] & 0xC0);
cpu_nmi(&(nes->cpu), nmi);
cpu_irq(&(nes->cpu), irq);
//- for cpu nmi & irq
} while (nes->ppu.pclk_frame != NES_HTOTAL * 241 + 2);
// at frame clk (241, 2) the frame buffer will be enqueued
//-- run cpu & apu & ppu
// run joypad for turbo key function
joypad_run(&(nes->pad));
}
return NULL;
}
// 内部函数实现
static DWORD WINAPI nes_thread_proc(LPVOID lpParam)
{
NES *nes = (NES*)lpParam;
DWORD dwTickLast = 0;
DWORD dwTickCur = 0;
DWORD dwTickDiff = 0;
DWORD dwTickSleep = 0;
int scanline = 0;
while (1)
{
WaitForSingleObject(nes->hNesEvent, -1);
if (nes->bExitThread) break;
// run cpu & ppu
for (scanline=0; scanline<NES_VTOTAL; scanline++)
{
cpu_run_pclk(&(nes->cpu), NES_HTOTAL);
ppu_run(&(nes->ppu), scanline );
cpu_nmi(&(nes->cpu), nes->ppu.pin_vbl);
}
// apu render frame
apu_run_pclk(&(nes->apu), NES_HTOTAL * NES_VTOTAL);
//++ framerate control ++//
dwTickCur = GetTickCount();
dwTickDiff = dwTickCur - dwTickLast;
dwTickLast = dwTickCur;
if (dwTickDiff > 16) {
if (dwTickSleep > 0) dwTickSleep--;
}
else if (dwTickDiff < 16) {
dwTickSleep++;
}
if (dwTickSleep) Sleep(dwTickSleep);
//-- framerate control --//
log_printf("%d, %d\n", dwTickDiff, dwTickSleep);
}
return 0;
}