public void Cycle()
{
if (!timerRunning)
{
return;
}
tickCount--;
if (tickCount > 0)
{
return;
}
tickCount = divider;
if (!countExpired)
{
timer--;
if (timer == 0xff)
{
divider = 1;
tickCount = 1;
countExpired = true;
if (timerIrq)
{
switch (IrqMode)
{
case 'I': cpu.irq(); break;
case 'N': cpu.nmi(); break;
case 'R': cpu.Reset(); break;
}
}
}
}
else
{
timer--;
if (timer == 0x00)
{
timerRunning = false;
}
else
{
if (timerIrq)
{
switch (IrqMode)
{
case 'I': cpu.irq(); break;
case 'N': cpu.nmi(); break;
case 'R': cpu.Reset(); break;
}
}
}
}
}
public void InstComplete()
{
if ((cpu.lastPc & 0x1c00) != 0x1c00 && SingleStep)
{
cpu.nmi();
}
}