Newsgroups:	comp.os.msdos.djgpp
From:	Peter Berdeklis <peter AT atmosp DOT physics DOT utoronto DOT ca>
Subject:	Interrupt Handling in C
Message-ID:	<Pine.SGI.3.91.961211110523.10278A-100000@chinook.physics.utoronto.ca>
Nntp-Posting-Host:	chinook.physics.utoronto.ca
Sender:	news AT info DOT physics DOT utoronto DOT ca (System Administrator)
Mime-Version:	1.0
Organization:	University of Toronto - Dept. of Physics
Date:	Wed, 11 Dec 1996 16:09:31 GMT
Lines:	17
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

The DJGPP FAQ suggest that "bullet proof" interrupt handlers must be 
written in ASM.  What is it that prevents DJGPP from outputing bullet 
proof code in C?  Could someone give me some hints.  

As you can probably guess I want to write an interrupt handler in C.  I 
could certainly modify the gcc -S output if necessary, but what traps 
should I be looking for.

Does someone have a DJGPP hardware/interrupt programing FAQ I could look at?

Thank you.

---------------
Peter Berdeklis
Dept. of Physics, Univ. of Toronto

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