void S9xMainLoop (void)
{
	START_PROFILE_FUNC (S9xMainLoop);
	//CPUPack.Setting_SA1=Settings.SA1;
	if (Settings.APUEnabled) {
		if (Settings.SA1) S9xMainLoop_SA1_APU();
		else {
			S9xMainLoop_NoSA1_APU();
		}				
	} else {
		if (Settings.SA1) S9xMainLoop_SA1_NoAPU();
		else S9xMainLoop_NoSA1_NoAPU();
	}
	
#ifndef ME_SOUND	
	if (cpu_glob_cycles>=0x00000000) {		
			APU_EXECUTE2 ();
	}		
#endif	
	
  CPUPack.Registers.PC = CPUPack.CPU.PC - CPUPack.CPU.PCBase;
    
  S9xPackStatus ();
      
  if (CPUPack.CPU.Flags & SCAN_KEYS_FLAG) {
    FINISH_PROFILE_FUNC (S9xMainLoop);
    S9xSyncSpeed ();
    CPUPack.CPU.Flags &= ~SCAN_KEYS_FLAG;
  }
  if (CPUPack.CPU.BRKTriggered && Settings.SuperFX && !CPUPack.CPU.TriedInterleavedMode2) {
    CPUPack.CPU.TriedInterleavedMode2 = TRUE;
    CPUPack.CPU.BRKTriggered = FALSE;
    S9xDeinterleaveMode2 ();
  }

  /*(APURegistersUncached.PC) = (IAPUuncached.PC) - (IAPUuncached.RAM);
  S9xAPUPackStatusUncached ();*/
}
Exemple #2
0
void
S9xDoHBlankProcessing ()
{
	START_PROFILE_FUNC (S9xDoHBlankProcessing);
	
#ifdef CPU_SHUTDOWN
  CPU.WaitCounter++;
#endif
  switch (CPU.WhichEvent)
    {
    case HBLANK_START_EVENT:
      if (IPPU.HDMA && CPU.V_Counter <= PPU.ScreenHeight)
	IPPU.HDMA = S9xDoHDMA (IPPU.HDMA);

      break;

    case HBLANK_END_EVENT:
      S9xSuperFXExec ();


      CPU.Cycles -= Settings.H_Max;
      (IAPUuncached->NextAPUTimerPos) -= (Settings.H_Max * 10000L);
      if ( (IAPUuncached->APUExecuting))
	(APUuncached->Cycles) -= Settings.H_Max;
      else
	(APUuncached->Cycles) = 0;

      CPU.NextEvent = -1;
      ICPU.Scanline++;

      if (++CPU.V_Counter >
	  (Settings.PAL ? SNES_MAX_PAL_VCOUNTER : SNES_MAX_NTSC_VCOUNTER))
	{
	  PPU.OAMAddr = PPU.SavedOAMAddr;
	  PPU.OAMFlip = 0;
	  CPU.V_Counter = 0;
	  CPU.NMIActive = FALSE;
	  ICPU.Frame++;
	  PPU.HVBeamCounterLatched = 0;
	  CPU.Flags |= SCAN_KEYS_FLAG;
	  S9xStartHDMA ();
	}

      if (PPU.VTimerEnabled && !PPU.HTimerEnabled &&
	  CPU.V_Counter == PPU.IRQVBeamPos)
	{
	  S9xSetIRQ (PPU_V_BEAM_IRQ_SOURCE);
	}

      if (CPU.V_Counter == PPU.ScreenHeight + FIRST_VISIBLE_LINE)
	{
	  // Start of V-blank
	  S9xEndScreenRefresh ();
	  PPU.FirstSprite = 0;
	  IPPU.HDMA = 0;
	  // Bits 7 and 6 of $4212 are computed when read in S9xGetPPU.
	  missing.dma_this_frame = 0;
	  IPPU.MaxBrightness = PPU.Brightness;
	  PPU.ForcedBlanking = (FillRAM[0x2100] >> 7) & 1;

	  FillRAM[0x4210] = 0x80;
	  if (FillRAM[0x4200] & 0x80)
	    {
	      CPU.NMIActive = TRUE;
	      CPU.Flags |= NMI_FLAG;
	      CPU.NMICycleCount = CPU.NMITriggerPoint;
	    }


	}

      if (CPU.V_Counter == PPU.ScreenHeight + 3)
	S9xUpdateJoypads ();

      if (CPU.V_Counter == FIRST_VISIBLE_LINE)
	{
	  FillRAM[0x4210] = 0;
	  CPU.Flags &= ~NMI_FLAG;
	  S9xStartScreenRefresh ();
	}
      if (CPU.V_Counter >= FIRST_VISIBLE_LINE &&
	  CPU.V_Counter < PPU.ScreenHeight + FIRST_VISIBLE_LINE)
	{
	  RenderLine (CPU.V_Counter - FIRST_VISIBLE_LINE);
	}

      break;
    case HTIMER_BEFORE_EVENT:
    case HTIMER_AFTER_EVENT:
      if (PPU.HTimerEnabled &&
	  (!PPU.VTimerEnabled || CPU.V_Counter == PPU.IRQVBeamPos))
	{
	  S9xSetIRQ (PPU_H_BEAM_IRQ_SOURCE);
	}
      break;
    }