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 ();*/
}
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;
}