Re: Pentium DEATH and Cyrix COMA in user-mode

Neilski (neil.conway@ukaea.org.uk)
Mon, 10 Nov 1997 12:55:44 +0000

Messages sorted by: [ date ][ thread ][ subject ][ author ]
Next message: Bill Hawes: "Re: MOD_INC_USE_COUNT"
Previous message: Gabriel Paubert: "Re: pentium bug continued"

Andrew Kieschnick wrote:
>I still say that they're also significantly different in that the pentium
>is executing what should be an invalid instruction, and the cyrix is
>executing valid instructions stupidly.

Totally agree, BUT, don't forget that (AFAIK) people found the Cyrix bug by
poking about after the Pentium bug was found (and indeed these valid
instructions break it), so has anyone tried the Cyrix-breaking opcodes on an
Intel Pentium ? Could be that the Pentium has other problems relating to lock
prefixes that cause it to hang even with some *valid* opcodes.

Neil

Next message: Bill Hawes: "Re: MOD_INC_USE_COUNT"
Previous message: Gabriel Paubert: "Re: pentium bug continued"