Re: Atari display list

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Article #393

#393

From: Dan O'Connell
Date: Wed, 03 Oct 1984 16:21

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In order to make a custom display list work best on a normal TV,
you should have no more than 192 scan lines in total.  If you have
more than that, rolling may occur on a TV because of the overscan.
I can not recall how many scan lines each line of graphics takes,
but I think each line of gr.7 is 2 scan lines, and each line of
gr.0 is 8 scan lines.
Another problem that could cause the rolling on the TV is that
if the screen data crosses a 4 K boundry, weird things happen.

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/5/84; site gloria.UUCP
Path: arc1-ca.pugleaf.net!utzoo!linus!philabs!cmcl2!seismo!rochester!rocksvax!rocksanne!sunybcs!gloria!dan
From: dan@gloria.UUCP (Dan O'Connell)
Newsgroups: net.micro.atari
Subject: Re: Atari display list
Message-ID: <575@gloria.UUCP>
Date: Wed, 3-Oct-84 12:21:11 EDT
Article-I.D.: gloria.575
Posted: Wed Oct  3 12:21:11 1984
Date-Received: Fri, 5-Oct-84 08:44:50 EDT
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Organization: State University of New York @ Buffalo,NY
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