Path: utzoo!censor!geac!maccs!cs4g6ag
From: cs4g6ag@maccs.dcss.mcmaster.ca (Stephen M. Dunn)
Newsgroups: comp.sys.ibm.pc
Subject: Re: i486 machines
Message-ID: <2558D3FC.9648@maccs.dcss.mcmaster.ca>
Date: 9 Nov 89 01:33:48 GMT
References: <1263@rodan.acs.syr.edu>
Reply-To: cs4g6ag@maccs.dcss.mcmaster.ca (Stephen M. Dunn)
Organization: McMaster University, Hamilton, Ontario
Lines: 24

In article <1263@rodan.acs.syr.edu> cwebster@rodan.acs.syr.edu (Chris Webster) writes:
$   First of all, about the problem with 486 chips: I recall reading precisely
$   what the problem was, but I can't remember where.  Since it evidently wasn't

   There are actually two problems ... one has to do with executing the FSINCOS
and FTAN (I think those are the correct mnemonics) instructions when your
data meets certain conditions ... the other has to do with trapping errors
in virtual memory mode or something like that.

   For more information, I suggest reading through comp.sys.intel or comp.arch.
There has been a fair bit of discussion of these bugs in those two groups.

$   minicomputers.  (Any one have reliable technical info?)   Evidently, the
$   problems with the chip have been worked out, since suppossively (according
$   to the Net) Compaq found the problems.

   According to Intel, the problems have been found and corrected; all
chips shipped from now on are correct, and old chips can be returned for
replacement.
-- 
Stephen M. Dunn                               cs4g6ag@maccs.dcss.mcmaster.ca
          <std_disclaimer.h> = "\nI'm only an undergraduate!!!\n";
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