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From: rwhite@nusdhub.UUCP (Robert C. White Jr.)
Newsgroups: comp.lang.c,comp.sys.ibm.pc
Subject: Re: Help needed with RAM resident program on Microsoft `C'
Message-ID: <123@nusdhub.UUCP>
Date: Tue, 13-Oct-87 16:50:50 EDT
Article-I.D.: nusdhub.123
Posted: Tue Oct 13 16:50:50 1987
Date-Received: Thu, 15-Oct-87 19:56:40 EDT
References: <506@umbc3.UMD.EDU>
Organization: National University, San Diego
Lines: 22
Summary: OK... Here goes.
Xref: mnetor comp.lang.c:4889 comp.sys.ibm.pc:9033

In article <506@umbc3.UMD.EDU>, dipto@umbc3.UMD.EDU (Dipto Chakravarty ) writes:
> Hi folks, 
> 	  In assembly one would set the origin by doing `ORG 100' and then 
> subsequently altering the vectors; but how can we do it from C ? 

	Dont sweat this one.  The only reason you set the ORG 100 is
to make the program conform to "*.com" fromat.  MSC takes care of the
*.EXE or *.COM  format of the executables, both of which may be left
resident, so just write the MOST effecent loader "main()" you can
and go for it.

> chip; subsequently processes the value. I want that if this value is valid
> the RAM resident program pops a message on the screen.

	The only thing I know about this is that you must preserve the
old "timer interrupt" value, and call it just before you "return"

	The procedure type "interrupt" is supposed to do some,
but not all, of this for you.  For the syntax of "interrupts" you
will have to look that up yourself.

Robert.