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Article View: comp.sys.ibm.pc.misc
Article #34

Re: Two video cards in one PC

#34
From: Andre D. Hoekstra
Date: Wed, 28 Oct 1992 15:09
52 lines
2471 bytes
In article <1992Oct27.142602.1@ualr.edu> djlewis@ualr.edu writes:
>In article <jrsellec.720065251@syzygy>, jrsellec@socs.uts.edu.au (91066720 j r selleck) writes:
>> mark@nickel.laurentian.ca writes:
>> 
>> 
>>>Greetings,
>> 
>>>	I have a few questions regarding the coexistance of two video cards in
>>>one computer.
>> 
>>>	I have a 386 in a portable (luggable) case which houses a CGA compatible
>>>LCD screen. The LCD screen has a 20 pin ribbon cable going to the video card,
>>>something I have never seen on other video cards. The card itself is a 8 bit
>>>CGA card with a port for an external CGA monitor and the internal connector to
>>>the LCD screen. DIP switches on the card allow me to choose between CGA on the
>>>internal LCD or an external CGA monitor. My questions are: 
>> 
>>>	1) Can I add a VGA card to allow for an external VGA monitor when I 
>>>	   require it, then switch back to the CGA when I'm on the road? 
>> 
>>>	2) Can the two cards exist in the same machine? 
>> 
>>>	3) Is there a VGA card that can support a CGA-LCD and a VGA external 
>>>	   monitor? 
>> 
>>>Mark Lafontaine
>>>Laurentian University
>>>Sudbury, Ontario, Canada.
>> 
>> 
>> Yes I belive they can exist in the same machine..
>> 
>> I am not sure how the programs differentiate between them, but I know that Borland C++ can use 2 monitors,,  the only restriction that they not be both VGA.
>> 
>> James
>> 
>James is correct, But generally one card is MONO (original type that had lpt1:)
>not HERCULES or CGA. If you can reset the CGA board to look like a MONO card
>then it might help.
>Don
>djlewis@ualr.edu
>

I had a VGA and CGA card in my 386/SX once:
  VGA-card switched automagically to mode 7 (Hercules monochrome)
I had a VGA and Hercules card in the same box (still have):
  VGA==VGA, but cannot emulate mode 7, Hercules==Hercules

Andre--
-- 
There is no reason for any individual to have a computer in    | Andre Hoekstra
their home. (Ken Olson, Ex-President Digital Equipment, 1977)  | Enschede -- NL
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Message-ID: <1992Oct28.150907.23832@cs.utwente.nl>
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Path: arc1-ca.pugleaf.net!sparky!uunet!pipex!warwick!uknet!mcsun!sun4nl!utrcu1!infnews!ahoekstr
From: ahoekstr@cs.utwente.nl (Andre D. Hoekstra)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: Two video cards in one PC
Message-ID: <1992Oct28.150907.23832@cs.utwente.nl>
Date: 28 Oct 92 15:09:07 GMT
Sender: usenet@cs.utwente.nl
Organization: Universiteit Twente, afd. WB/WA (NOT cs)
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