private bool CheckPendingNmi()
{
var delta = (int)(m_cpu.Tact - m_pendingNmiLastTact);
m_pendingNmiLastTact = m_cpu.Tact;
m_pendingNmi -= delta;
var args = new BusCancelArgs();
var handlerNmiRq = m_nmiRq;
if (handlerNmiRq != null)
{
handlerNmiRq(args);
}
if (!args.Cancel)
{
m_pendingNmi = 0;
return(true);
}
return(false);
}
private void BusNmiRq(BusCancelArgs e)
{
e.Cancel = DOSEN;
}
private void BusNmiRq(BusCancelArgs e)
{
// check DOSEN to avoid conflict with BDI
e.Cancel = EnableShadow ? DOSEN : !IsRom48;
}
protected virtual void BusNmiRq(BusCancelArgs e)
{
e.Cancel = !IsRom48;
}
private void BusNmiRq(BusCancelArgs e)
{
e.Cancel = (m_cpu.regs.PC & 0xC000) == 0;
}
protected virtual void BusNmiRq(BusCancelArgs e)
{
//e.Cancel = DOSEN;
}
