Hello Andy.

> I'm having a problem with clearing an IRQ I think in a DOS app.
> Do you have any example code of how to handle when I get an IRQ > 7?
>         if (CommPort[PORTNUM].IRQ >= 8)
>                 outp (0xA0, 0x20);
>         outp (0x20, 0x20);

  All *I* can say is; this is a thorny question that I've never dared to
address.  I shall be very interested in the answer!

  Are you writing this from scratch, or copying someone's template?
Just as an outside guess, have you tried *not* clearing the secondary
controller?  I have a *funny* notion the BIOS may do that for you.  Or
maybe the primary.
--
  Cheers,
        Paul B.