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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: <1751@mwca.UUCP>
Date: 21 Nov 90 19:36:38 GMT
References: <1990Nov20.085041.25605@math.lsa.umich.edu>
Organization: Microware Systems Corp., Santa Clara, CA
Lines: 24

In article <1990Nov20.085041.25605@math.lsa.umich.edu> hyc@math.lsa.umich.edu (Howard Chu) writes:
>Along other lines... I just started using ICD's boot stuff with this new
>host adapter... Apparently, whenever the driver detects a write failure, the
>thing shifts the video into medium resolution. What I'm seeing is on my
>multisync monitor in monochrome mode, all of a sudden there'll be a glitch and
>my screen has been divided in half, vertically down the middle. Everything is
>drawn in both the left and right halves of the screen...
>--
>  -- Howard Chu @ University of Michigan

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 - overnight
I turn off the monitor but leave the ST on - when I came in the next morning
and turned on the monitor I saw what you describe. I suspect it has something
to do with the synchronizing circuitry in the monitor becoming confused (in
my case, when I turned on the monitor with the ST already on). Perhaps your
ICD driver/STe is pulsing the horizontal sync in such a way that the monitor
gets confused...

-- 
################################################################################
#  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!#######