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From: bobw@hpsad.HP.COM (Bob Waltenspiel)
Newsgroups: comp.sys.atari.st
Subject: ST with video problem
Message-ID: <750117@hpsad.HP.COM>
Date: 15 Mar 91 23:50:23 GMT
Organization: HP Signal Analysis Div - Rohnert Park, CA
Lines: 19

I recently bought a used 520ST with JRI SIMM memory upgrade board as a
second machine.  It seems to have some sort of video problem.  Some
programs don't clear the screen correctly.  They work just fine on my
other machine.

Example: using Flash the right mouse button can be pressed to toggle
between the terminal and the save buffer/GEM pull down menus.  Press
it a second time and it should restore the terminial.  The problem is
GEM menus and other graphics associated with that screen don't get
cleared.

Example: the DeskJet accesory tool by Jeroen Scheerder leaves little
remenates of its window when closed.

Example: the Spectrum slide viewer spcsli.prg only shows garbage.

Any ideas?

-Bob