Re: cpuinfo & Cyrix 6x86

Albert Cahalan (albert@ccs.neu.edu)
Wed, 27 Nov 1996 15:55:44 -0500 (EST)

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In reply to: Pierfrancesco Caci: "cpuinfo & Cyrix 6x86"

> Why is the Cyrix 6x86 seen as a 486 in /proc/cpuinfo?
> Isn't it a Pentium-class cpu?

It is only a fast 486.

> Does this mean that I've to compile for a 486 target,
> instead a Pentium one?

You would, but currently you are protected from the Pentium
instructions by "if()". For 486+ (and maybe soon PentiumPro+) code,
Linux uses "#if" which does not save incompatible processors.

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