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From: dmurdoch@watstat.waterloo.edu (Duncan Murdoch)
Newsgroups: comp.sys.ibm.pc
Subject: ATI Graphics Solution software bug
Message-ID: <1938@maytag.waterloo.edu>
Date: 11 Apr 90 13:08:31 GMT
Sender: daemon@maytag.waterloo.edu
Reply-To: dmurdoch@watstat.waterloo.edu (Duncan Murdoch)
Organization: U. of Waterloo, Ontario
Lines: 13


I've had an ATI Graphics Solution herc/CGA graphics card for about 4 years,
and just last night found a bug in their MS.COM configuration program (version
B2.01). If you ask it to set up two hercules graphics pages using
  MS mg2 -nonresident
then it writes a word containing two "m" characters to location 1A27:2072 in
memory.  (This is running on a clean system, with memory filled with nulls;
I don't know what happens if you run it after memory is full of crap).  
It took me so long to notice because usually that location is safe to write to,
but I just loaded another device driver, and pushed Sidekick to segment
1A27...  CRASH!!

Duncan Murdoch