From: =?iso-latin-de?Q?Heinz-J=FCrgen_Keller?= <hjk@ddorf.rhein-ruhr.de>
Date: Tue, 11 Nov 1997 20:35:10 +0800
To: cypherpunks@cyberpass.net
Subject: Serious bug in Cyrix.IBM,SGS 6x86 CPU
Message-ID: <Pine.LNX.3.96.971111131245.3791B-100000@alien.lummerland.de>
MIME-Version: 1.0
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There is an article in the latest c't computer magazin about a bug
called 'Hidden CLI' in all the 6x86 CPUs including M2.
As I do not have access to such a CPU I can't verify it.
The code:
          MOV BX,70h
          STI
again:    XCHG AX,[BX]
          MOV DX,AX
          JMP again
The CPU hangs ignoring all interrupts.
Anybody heard about it?
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  Heinz-Juergen Keller  hjk@[mail.]ddorf.rhein-ruhr.de   hjkeller@gmx.[net,de]
  2047bit PGP Public Key : http://www.ddorf.rhein-ruhr.de/~hjk/
  MD5 Fingerprint: 4d33126fbf8c1bcd8e96ba90d99f0bdc
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