public override void ClearInterrupt()
{
#if RTC_NO_GO
DebugStub.Print("Unwanted RTC interrupt! (b = {0})\n",
__arglist(ReadRtc(DS1287_B)));
return;
#endif // RTC_NO_GO
byte status = ReadRtc(DS1287_C);
if ((status & 0x40) != 0x40)
{
// We may get Update-Ended interrupts even though we've
// not requested them.
pic.AckIrq(irq);
return;
}
ClockLogger.AddEntry(4, rps, timer);
rps.pitLastClock = timer.Timer2Read();
rps.upTime += InterruptGapTicks;
ClockLogger.AddEntry(5, rps, timer);
irqCount++;
if (timer.InterruptPending == false)
{
// This is to keep time progressing if the user has
// not set an interrupt
timer.SetKeepAliveInterrupt();
}
pic.AckIrq(irq);
// Invalidate TSC snapshot to force clock synchronization
this.tscSnapshotValid = false;
}
public override void ClearInterrupt()
{
#if VERBOSE
Tracing.Log(Tracing.Debug, "Timer.ClearInterrupt()");
#endif
#if TIMER_NO_GO
Tracing.Log(Tracing.Notice, "Unwanted timer interrupt!");
#endif // TIMER_NO_GO
ClockLogger.AddEntry(10, rps, this);
long currentTime = rps.GetKernelTicks(Timer2Read());
this.interruptPending = false;
irqCount++;
ClockLogger.AddEntry(11, rps, this);
pic.AckIrq(irq);
}
public override bool InternalInterrupt(byte interrupt)
{
// Strictly there are no interrupts internal to
// this Hal instance. In practice, some hardware seems
// intent on firing an interrupt even if it is masked.
//
// Return true if interrupt appears to be valid but
// is masked, false otherwise.
byte irq = pic.InterruptToIrq(interrupt);
#if DEBUG_SPURIOUS
DebugStub.Break();
#endif
if (pic.IrqMasked(irq) == true)
{
DebugStub.WriteLine("--- Acked spurious Irq={0:x2}", __arglist(irq));
pic.AckIrq(irq);
return(true);
}
return(false);
}