Path: utzoo!utgpu!water!watmath!clyde!rutgers!cmcl2!brl-adm!umd5!ames!ucsd!sdcsvax!ucsdhub!hp-sdd!hplabs!sdcrdcf!burdvax!coltoff
From: coltoff@PRC.Unisys.COM (Chilly Willy)
Newsgroups: comp.sys.ibm.pc
Subject: Writing a TSR in C
Message-ID: <5527@burdvax.PRC.Unisys.COM>
Date: 18 Feb 88 21:23:23 GMT
Distribution: na
Organization: North Pole
Lines: 23

This has probably been covered here hundreds of times in the
past 6 months but since I'm not a regular reader of this group
I don't have the data I need.

I need to write a TSR in C. Actually I want to write it in C
since assembler is a royal pain in the posterior end. It is
actually a very simple task that I need to do but I'm a PC
novice and don't know about all the little gotchas hiding
hither and yon.

What I want the TSR to do is modify interrupt vector 0xA
and print out a message when this interrupt occurs. I'll
install the TSR (I really don't care if multiple copies
exist) and then use a debug to get the other board to generate
the interrupt.

What things should I be concerned about checking? How do I make
just the interrupt handler stay memory resident? Any advice you
can offer would be greatly appreciated. Thanks in advance.
-- 
	- Joel
		{psuvax1,sdcrdcf}!burdvax!coltoff	(UUCP)
		coltoff@burdvax.prc.unisys.com		(ARPA)