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From: dpbst3@unix.cis.pitt.edu (David P Brennan)
Newsgroups: comp.sys.laptops
Subject: forcing video modes
Summary: can it be done with software?
Message-ID: <132214@unix.cis.pitt.edu>
Date: 26 May 91 00:55:06 GMT
References: <1991May25.220109.1@vax1.tcd.ie>
Organization: University of Pittsburgh
Lines: 14


I've been going through some programs that can be run in two modes: EGA and
Hercules mono. My laptop has CGA. Now I know enough to know that *forward*
compatability (i.e.: CGA to EGA) is entirely hardware-dependent, is
*backward* compatability? Is it possible to force the CGA driver to emulate
monochrome graphics? What I'm trying to avoid, of course, is the extra
expense and simple bs involved in getting an expansion chassis, EGA or VGA
card and monitor simply to run programs that *should* be able to run in mono.
Any thoughts on this?

Dave Brennan
UPitt SLIS
dpbst3@unix.cis.pitt.edu