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From: jhs@MITRE-BEDFORD.ARPA
Newsgroups: net.micro.atari
Subject: Re: Monitor question for Atari 520ST
Message-ID: <8602062314.AA26977@mitre-bedford.ARPA>
Date: Thu, 6-Feb-86 18:14:24 EST
Article-I.D.: mitre-be.8602062314.AA26977
Posted: Thu Feb  6 18:14:24 1986
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Organization: The MITRE Corp., Bedford, MA
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If it is a color monitor it should work just fine.

If it is a monochrome monitor, you will probably have to
re-tweak the vertical and horizontal hold controls to lock it in, and you may
well have to make some changes to the sweep circuits both to lock it in and to
get a full-sized picture with the right aspect ratio (horizontal to vertical
scale factors).

However, I hasten to add that I have never tried this and don't even own an
ST (yet).  The main problem is that the ST expects a monochrome monitor to
run at a 70-Hz frame rate, non-interlaced, and to have 640 by 400 pixels.
Standard monochrome monitors run at 60 Hz and I'm not sure of the screen
resolution.  The 400 should be no problem, as this is an "analog" quantity.
But the number of lines is not, and there may be a problem of "folding over"
of the picture.  Also the geometry may not be right unless you change the gain
of one of the sweep channels.

If you think I sound like I know what I'm talking about, don't be fooled.
Find somebody who really knows what monochrome monitors are all about.

						-John Sangster
						jhs at mitre-bedford.arpa