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From: rosen@mtgzz.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Re: Finding the address of functions in MSC, and the ^C interupt
Message-ID: <2642@mtgzz.UUCP>
Date: Thu, 30-Apr-87 12:02:33 EDT
Article-I.D.: mtgzz.2642
Posted: Thu Apr 30 12:02:33 1987
Date-Received: Fri, 1-May-87 02:47:19 EDT
References: <2042@hoptoad.uucp>
Organization: AT&T, Middletown NJ
Lines: 32
Summary: use signal() function

In article <2042@hoptoad.uucp>, pozar@hoptoad.uucp (Tim Pozar) writes:
> 
>    I was wondering how one finds the address of a function and would 
> apply it to setting a vector interupt with it.  This is the code that
> I came up with.  It compiles with one error (see below).  If anyone
> has any insite on how this could be better done, I would like to 
> hear it.
>             Tim Pozar
>  [. . .]

I didn't have a chance to look at your program in detail, but here are a few
pointers.

First of all instead of playing with interrupt vectors you should be using
the C library call signal(). I don't remember the exeact parameters but it is
in your manual and does axactly what you want--traps on ^C.

But assuming you want to do it your way...

You didn't say what your compiler error was, but it could be a pointer size
mismach. Are you using the large modal? You probably sould be if you want to
stuff a long function address into an interrup vector. It also might help to
put an '&' infront of 'bye', as in:
   funcp = &bye;

I once wrote a similar routine in MSC to cahnge interrupt vectors and restore
on exit. If you need more info contact me and I'll look it up.
-- 
Thomas Rosenfeld 	@ AT&T Information Systems Labs, Middletown, NJ
			(201) 957-5867 	
			UUCP:		{harpo,ihnp4,burl,akgua}!mtgzz!rosen
Disclaimer: I don't claim anything.