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From: jcm@MSR.EPM.ORNL.GOV (James A. Mullens)
Newsgroups: comp.sys.misc
Subject: Re: Any more squeak ideas?
Message-ID: <9012072106.AA15959@msr.EPM.ORNL.GOV>
Date: 7 Dec 90 21:06:45 GMT
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This subject reminds me of something that happened to me years ago.  I am 99%
certain this is not related to the original poster's problem, but I have always
been curious about it.  Maybe someone can shed some light on it.

Many moons ago I was writing some assembly language code for the 8087 on an
original-model Big Blue PC.  At one point I made a programming mistake which
resulted in (something like) continuous divides by 0.0.  When I ran this
faulty program I heard a continuous high-pitched squeal.  I couldn't decide
if it came from the monitor or the computer itself.  My guess was the monitor,
but as someone else has pointed out, these sounds are very directional.

This was a very reproducible phenomenon.  The squeal only happened when I ran
the faulty program and never occurred after then program was fixed.

Any comments?

jim mullens
oak ridge national labs
jcm@msr.epm.ornl.gov -or- mullens@jamsun.ic.ornl.gov