Hi martin have you considered the possibility that the serial card you have
installed <or mother board if that's where the serial port is> does not have
the hardware to generate an interrupt. Or Maybe you need to set a jumper on
the card to set what interrupt is used. Or maybe the card is not working
correctly. Maybe your problem is not software but the hardware it's self

. . . Brian


-----Original Message-----
From: Martin McCormick <martin@DC.CIS.OKSTATE.EDU>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Tuesday, February 03, 1998 9:44 AM
Subject: [OT] Interrupt-driven Serial Communications on a P.C. Serial port



        Just so there is no confusion, the system does not behave any
differently after installing the driver so it is not crashing anything.
There are just no serial interrupts at all.

        I would appreciate either a direct answer if this is familiar or
a pointer to some more example serial interrupt code that is hopefully
written in assembler that I can examine and see what is different.
If I find out what is wrong, I will gladly share with others since this code
is about 10 years old and is based on various public domain sources.

Martin McCormick