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Date:      Sun, 9 Apr 1995 03:42:45 +1000
From:      Bruce Evans <bde@zeta.org.au>
To:        gwk@cray.com, nate@sneezy.sri.com
Cc:        bugs@FreeBSD.org
Subject:   Re: 80387 hangs system at divide by zero
Message-ID:  <199504081742.DAA02272@godzilla.zeta.org.au>
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>Ahh, you have a buggy chip.  :(

>Can you see if your system hangs under DOS with the same thing, cause if
>it does it's time to replace your buggy hardware.  It would be very
>difficult and extremely slow to check every divide to make sure they
>didn't do a divide/zero, so working around such an obvious hardware bug
>is not worth it in terms of performance or in terms of programmer time
>to do it.

Actually it should be possible to use the chip in IEEE mode (with all
exceptions masked).  This should be the default mode, and probably will
be in FreeBSD-2.1.

Bruce
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