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From: dub@pur-phy.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Interrupt handlers on the AT, need help
Message-ID: <2142@pur-phy.UUCP>
Date: Wed, 18-Feb-87 16:10:22 EST
Article-I.D.: pur-phy.2142
Posted: Wed Feb 18 16:10:22 1987
Date-Received: Fri, 20-Feb-87 05:41:00 EST
Organization: Parakeets for Peace
Lines: 22

*** 

	I would like to be able to use a hardware interrupt
(like IRQ5) to signal our IBM PC-AT to perform an
interrupt handling routine (this would involve reading
data from an external device, doing some manipulation
and then storing it away.)  The interrupt will be generated
by a timing circuit.
	My problem is how to correctly write the interrupt
handling routine in Micorsoft C (latest version).  
I have been able to redirect the interrupt call to my 
handler function and even get the handler to work.  Alas, 
returning from the handler is deadly.
	Is there anyone out thar who has written some
software to handle interrupts already that can help
me out?
	Reply via e-mail please.

			       Dwight Bartholomew
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