private void Cycle(bool noPpu)
{
_apuCatchCycles += _apuCyclesPerMaster * 2;
if (_joypadStrobe)
{
_joypad1Val = _joypad1State;
_joypad2Val = _joypad2State;
}
if (_hdmaTimer > 0)
{
_hdmaTimer -= 2;
}
else if (_dmaBusy)
{
HandleDma();
}
else if (XPos < 536 || XPos >= 576)
{
CpuCycle();
}
if (YPos == _vTimer && _vIrqEnabled)
{
if (!_hIrqEnabled)
{
if (XPos == 0)
{
_inIrq = true;
CPU.IrqWanted = true;
}
}
else
{
if (XPos == _hTimer * 4)
{
_inIrq = true;
CPU.IrqWanted = true;
}
}
}
else if (XPos == _hTimer * 4 && _hIrqEnabled && !_vIrqEnabled)
{
_inIrq = true;
CPU.IrqWanted = true;
}
if (XPos == 1024)
{
_inHblank = true;
if (!_inVblank)
{
HandleHdma();
}
}
else if (XPos == 0)
{
_inHblank = false;
PPU.CheckOverscan(YPos);
}
else if (XPos == 512 && !noPpu)
{
PPU.RenderLine(YPos);
}
if (YPos == (PPU.FrameOverscan ? 240 : 225) && XPos == 0)
{
_inNmi = true;
_inVblank = true;
if (_autoJoyRead)
{
_autoJoyBusy = true;
_autoJoyTimer = 4224;
DoAutoJoyRead();
}
if (_nmiEnabled)
{
CPU.NmiWanted = true;
}
}
else if (YPos == 0 && XPos == 0)
{
_inNmi = false;
_inVblank = false;
InitHdma();
}
if (_autoJoyBusy)
{
_autoJoyTimer -= 2;
if (_autoJoyTimer == 0)
{
_autoJoyBusy = false;
}
}
XPos += 2;
if (XPos == 1364)
{
XPos = 0;
YPos++;
if (YPos == 262)
{
CatchUpApu();
YPos = 0;
}
}
}