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From: bill@mwca.UUCP (Bill Sheppard)
Newsgroups: comp.sys.atari.st,comp.sys.atari.st.tech
Subject: Re: STe troubles, video weirdness
Message-ID: <1761@mwca.UUCP>
Date: 27 Nov 90 19:19:10 GMT
References: <1990Nov20.085041.25605@math.lsa.umich.edu> <1751@mwca.UUCP> <1990Nov25.005225.20937@math.lsa.umich.edu>
Organization: Microware Systems Corp., Santa Clara, CA
Lines: 22

In article <1990Nov25.005225.20937@math.lsa.umich.edu> hyc@math.lsa.umich.edu (Howard Chu) writes:
>In article <1751@mwca.UUCP> bill@mwca.UUCP (Bill Sheppard) writes:
>>I've seen the same thing (with the double mono screen - a cheap two-page
>>monitor!) This happened when I was using a multisync in mono mode...

>Well, I've seen it in low-rez mode now, too. In mono, what happens is the
>video shifter gets set to medium rez, but lineA, VDI, AES, etc., aren't
>notified of any change...

>  -- Howard Chu @ University of Michigan

Are you sure that it is in the ST? I'm assuming that the weirdness is being
caused by the multi-sync circuitry of the monitor, since this seems never to
have shown up on a non-multisync, and I find it very unlikely that the video
circuitry in the ST could 'accidentally' send out each scan line _twice_ on
the same line...seems that this would require a doubling of the horizontal
scan rate since no information is being lost.
-- 
################################################################################
#  Bill Sheppard  --  bills@microware.com  --  {uunet,sun}!mcrware!mwca!bill   #
#  Microware Systems Corporation  ---  OS-9: Seven generations beyond __/_!!   #
#######Opinions expressed are my own, though you'd be wise to adopt them!#######