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From: jbn@glacier.STANFORD.EDU (John B. Nagle)
Newsgroups: comp.sys.ibm.pc,comp.arch,comp.graphics
Subject: Re: How did this program burn out two monitors?
Message-ID: <17465@glacier.STANFORD.EDU>
Date: 28 May 88 17:09:43 GMT
References: <10244@agate.BERKELEY.EDU> <33072@linus.UUCP>
Reply-To: jbn@glacier.UUCP (John B. Nagle)
Organization: Stanford University
Lines: 13


      As far as I know, this problem only occurs with the IBM Personal Computer
Display (the green screen monochrome monitor) and some overly faithful clones
thereof.  The IBM Personal Computer Display is an old design, lifted from the
IBM Displaywriter product line in the early days of the IBM PC.  The
Displaywriter wasn't user-programmable, and thus not vulnerable to abuse by
user programs.

      There's nothing at all mysterious about this problem.  It's well 
understood, and has been written up in the trade press, although it's been
a while, since this display is old.

					John Nagle