Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!husc6!encore!maxzilla!corbin
From: corbin@maxzilla.Encore.COM
Newsgroups: comp.sys.ibm.pc
Subject: Re: EGA for RGB?
Message-ID: <9850@multimax.Encore.COM>
Date: 1 Sep 89 04:14:07 GMT
References: <1680@hydra.gatech.EDU . <2727@astroatc.UUCP .
Sender: news@Encore.COM
Reply-To: corbin@maxzilla.UUCP ()
Distribution: usa
Organization: Encore Computer Corp, Marlboro, MA
Lines: 40

In article <2727@astroatc.UUCP> brown@astroatc.UUCP (Vidiot) writes:
 >In article <1680@hydra.gatech.EDU> ce1zzes@prism.gatech.EDU (Eric Sheppard) writes:
 ><
 ><A friend of mine wants to run EGA programs on his IBM-compatible.  He has
 ><a Tandy RGB monitor connected.  He finds that his EGA programs will not run.
 ><Are there any drivers, etc. that will allow him to do this?
 >
 >Well, you left out alot of information, so I will have to guess what is
 >really in the system.
 >
 >If it is what I think it is, the PC has a CGA display board and display.
 >It will NOT run EGA programs, period.  You will have to replace the CGA
 >display board and monitor with an EGA display board and an EGA monitor.
 >There is nothing else that can be done.

A cheaper alternative is to just upgrade the graphics adapter to one that
supports EGA on an RGB monitor.  The ATI EGA Wonder will do that.  The only
drawback is that then EGA display is interlaced on an RGB monitor.  The flicker
may be bothersome.

 >
 >Even if someone made a TSR that grabbed EGA calls and converted the calls
 >and data into CGA, the display will still look like CGA.  It may actually
 >be worse, since CGA only handles something like 4 colors at a time, the
 >EGA pallette can't be efficently converted.

The 4 color limit is a function of the CGA adapter, not the monitor.
The ATI card will allow the full range of 64 EGA colors on an RGB monitor
(only 16 at a time of course).

 >
 >Time for new hardware.
 >-- 
 >	        harvard\     att!nicmad\
 >Vidiot            ucbvax!uwvax..........!astroatc!brown
 >	        rutgers/  decvax!nicmad/
 >	ARPA/INTERNET: brown%astroatc.UUCP@spool.cs.wisc.edu

Stephen Corbin
{bu-cs,decvax,necntc,talcott}!encore!corbin             corbin@encore.COM