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From: mmm@nbires.UUCP (Michelle Melvin)
Newsgroups: comp.sys.ibm.pc
Subject: Re: DOS Program Termination
Message-ID: <947@nbires.UUCP>
Date: Mon, 24-Nov-86 12:39:29 EST
Article-I.D.: nbires.947
Posted: Mon Nov 24 12:39:29 1986
Date-Received: Mon, 24-Nov-86 23:52:08 EST
References: <2337@ihlpa.UUCP>
Reply-To: mmm@nbires.UUCP (Lloyd W. Tabb)
Distribution: net
Organization: NBI Inc, Boulder CO
Lines: 17

The control C handler address is at INT 23h.  There are also serveral
addresses stored in the programs PSP.  If you spawn a program without
executing it, you can modify the terminate address, control c address 
and hard error address.  Once the modifications have been made you can
then let the program execute.  When the program terminates, dos returns 
control to these addresses.  This is a much easier method of traping
program termination then traping the interupt.

Anyway, I wrote a structure of the contents of the PSP.  If there is
enough interest, I will post it.

Lloyd W. Tabb
NBI Engineering
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