Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!zaphod.mps.ohio-state.edu!mips!pacbell.com!pacbell!att!dptg!mtunq!psrc
From: psrc@mtunq.ATT.COM (Paul S. R. Chisholm)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: Mono Monitor with VGA card?
Summary: not a TTL monochrome monitor; need analog (VGA) display
Message-ID: <1203@mtunq.ATT.COM>
Date: 4 Aug 90 19:54:27 GMT
References: <6053@hub.ucsb.edu>
Distribution: comp
Organization: AT&T Bell Laboratories
Lines: 18

In article <6053@hub.ucsb.edu> 6600kjp@ucsbuxa.ucsb.edu (Kevin Phillips) writes:
> . . . right now my system uses a Hercules-compatible Monochrome
> graphics card, but I would like to expand my system to a VGA card.
> Is it possible to use my current monitor as a greyscale monitor with
> a VGA card?

No.

MDA and HGA compatible monitors are called "TTL monitors", for the
interface they use.  (Only monochrome monitors have this kind of
interface.  They can be used with EGA cards as well, but hardly ever
are.)  TTL monitors can't display shades of gray.  VGA cards need
analog monitors, either color or monochrome; either way, an entirely
different species.

Paul S. R. Chisholm, AT&T Bell Laboratories
att!mtunq!psrc, psrc@mtunq.att.com, AT&T Mail !psrchisholm
I'm not speaking for the company, I'm just speaking my mind.