Re: German mod to increase ST display size

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Article #38720

#38720

From: David Clear
Date: Wed, 10 May 1989 19:33

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In article <250*ivan@rzsin.sin.ch> ivan@rzsin.sin.ch (Ivan D. Reid) writes:
>(a little)
>....  It's a hardware kludge to keep the display enable (DE) signal to
>the MMU and shifter chips active longer, thus displaying into the overscan on
>all four sides.
>(then lots more)

Has anyone tried this in the colour modes? I've seen demos where overscan is
achieved in software by playing with the 50/60Hz register, but uses up an
awful lot of time to do the side borders. Overscan in colour sounds very
interesting.

-- 
% cc life.c                      | David Clear <dac@ukc.ac.uk>
% a.out                          | Computer Science, University of Kent,
Segmentation fault (core dumped) | Canterbury, England.

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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!rutgers!sun-barr!texsun!pitstop!sundc!seismo!uunet!mcvax!ukc!harrier.ukc.ac.uk!gos.ukc.ac.uk!dac
From: dac@ukc.ac.uk (David Clear)
Newsgroups: comp.sys.atari.st
Subject: Re: German mod to increase ST display size
Message-ID: <2971@gos.ukc.ac.uk>
Date: 10 May 89 19:33:52 GMT
References: <250*ivan@rzsin.sin.ch>
Reply-To: dac@ukc.ac.uk (David Clear)
Organization: Computing Lab, University of Kent at Canterbury, UK.
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