Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!usc!sdsu!ucsd!nprdc!trejo
From: trejo@nprdc.arpa (Leonard J. Trejo)
Newsgroups: comp.sys.ibm.pc
Subject: USING TWO GRAPHICS CARDS IN A COMPAQ 386/25
Keywords: VGA CGA COMPAQ 386 GRAPHICS
Message-ID: <5209@arctic.nprdc.arpa>
Date: 22 Dec 89 19:13:40 GMT
Sender: news@nprdc.arpa
Reply-To: trejo@nprdc.arpa (Leonard J. Trejo)
Organization: Navy Personnel R & D Center
Lines: 29


We're trying to use two graphics cards in a Compaq 386/25 computer
running MS-DOS 3.1.  One card is the Compaq Video Graphics Controller
(VGA-compatible) and the other is the Compaq Video Display Controller
(CGA-compatible).  We'd like to use, simultaneously, the VGA for 
graphics-only display purposes only and the CGA as a text-only 
console which echoes keyboard input.  Problem is that despite our 
best efforts, graphics always go to the CGA card.  I'm told that 
this is because VGA and CGA screen memory overlap, plus that 
whenever another graphics card is installed with the Compaq VGA, 
graphics are forced to go to the other card and the VGA runs in 
monochrome mode.

Compaq service reps. have not been helpful at all.

Anyone out there have some words of wisdom for us?  We'd appreciate
them greatly.

				Sincerely,

				L. J. T.

============================================================================
ARPANET : trejo@nprdc.navy.mil		UUCP:  ucsd!nprdc!trejo

U.S. Mail: Leonard J. Trejo, Ph. D.	Phone: (619) 553-7711
	   Neuroscience Laboratory		(AV) 553-7711
	   NPRDC, Code 141
	   San Diego, CA 92152-6800