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From: ee65xta@sdcc14.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: interrupts
Message-ID: <266@sdcc14.UUCP>
Date: Thu, 7-May-87 21:40:27 EDT
Article-I.D.: sdcc14.266
Posted: Thu May  7 21:40:27 1987
Date-Received: Sat, 9-May-87 07:44:54 EDT
Organization: University of California, San Diego
Lines: 14
Keywords: interrupts


	I am attempting to write an interrupts handling routine
in Microsoft C, and have been having some difficulty. Presently, I am
installing a short assembly language routine that saves registers,
and then calls my C routine. Once it is installed, my program then
tries to call the interrupt trhough the Microsoft C int86() function. 
	I know that the routine is installed correctly, because when
I perform the interrupt from a program, it makes it to my routine, and
works fine. Unfortunately, it never makes it back to the main program
once its done, but instead, locks everything up. I am using one of the unused 
interrupts, so I shouldn't be conflicting with any system things.
	Is there anybody out there who has tried something similar, or who knows of something I might be doing wrong? Any help would be greatly appreciated.

					Steve