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From: wei@tiger.Princeton.EDU (P Wei)
Newsgroups: comp.sys.ibm.pc,comp.lang.c
Subject: making COM program using assembly language with C routines ?
Message-ID: <200@tiger.Princeton.EDU>
Date: Wed, 21-Oct-87 13:08:22 EDT
Article-I.D.: tiger.200
Posted: Wed Oct 21 13:08:22 1987
Date-Received: Sat, 24-Oct-87 05:24:02 EDT
Organization: EE, Princeton University
Lines: 27
Keywords: COM
Xref: mnetor comp.sys.ibm.pc:9286 comp.lang.c:5062

I am using IBM MASM 2.0 and MSC 4.0.
The problem is that I want to make a COM program written in assembly
language in which I call some comercial library routines written in C.
The first naive intuition is the following:
_text segment byte public 'code'
_text ends
_data segment word public 'data'
_data ends
dgroup group _text, _data          ; forcing _text and _data to be
				   ; in the same segment
_text segment byte public 'code'
      assume cs:dgroup, ds:dgroup, ss:dgroup
      extrn  croutines:near
      public _main
      org 100h
_main proc near
      call _croutines
      int 20h
_main endp
_text ends
      end _main
AND this doesn't work.  The linker gave me three 'fixup overflow...'
messages.
It looks like I have to work on the start up code for MSC.
Well, can somebody give me some hints or suggestions ?
thanks
HP            wei@princeton.UUCP