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From: galpin@ucscb.UCSC.EDU (Knight of the Mystic Sword)
Newsgroups: comp.sys.atari.st
Subject: Re: Pictures on the ST (Amiga's side!)
Summary: More stuff about Amiga/ST pics..
Message-ID: <4860@darkstar.ucsc.edu>
Date: 3 Jul 90 05:47:50 GMT
References: <672.26899914@desire.wright.edu> <1990Jul2.071658.16558@math.lsa.umich.edu> <81847@tut.cis.ohio-state.edu>
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I believe that the 15hz mode referred to was the Hedley monitor (1208X800) that uses four Amiga screens to produce one virtual screen. However, with the 
addition of the Enhanced Chip Set, the Hedley design is almost obsoleted, with
the standard 1024 (1174? with overscan) X 400 (470? with overscan) modes
available. The Hedley (Moniterm) design is only useful for those who really
need a 19 inch four grey scale full page display. I believe that the computer
refreshes the display at only 15hz, but the monitor actually refreshes at a
significantly higher rate (due to its internal circuitry).

The Hedley design is not intended for playing games or doing very much else
except for productivity stuff. Because of the way the displays work, only one 
sprite is supported (the mouse pointer). For the applications that it is
designed for, the Hedley's slow screen update should not pose very much of a
problem.

-Dan

(Former Atari 800 enthusiast that now uses the next generation) :-)

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