Re: /proc/cpuinfo on a 486

Rafael Reilova (rreilova@ececs.uc.edu)
Tue, 12 Jan 1999 23:31:21 -0500 (EST)

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On Mon, 11 Jan 1999, Nimrod Zimerman wrote:

> With all the talks regarding /proc/cpuinfo recently, it appears that many
> things have been fixed for the high-end machines, but my 486 is no longer
> recognized properly. I'm not certain when this has broken, and I'm willing
> to try and find out if that's important.

Hi,

Can you check if your processor has the cpuid instruction. If it
doesn't, there is no way to determine if it is in fact a i486DX-25/33 [1].
Probably Linux 2.0 defaulted to that name (IOW it was lying). A small C
code is attached to verify that.

Cheers,

Rafael

[1] The processor ID register is returned EDX just after RESET, of course
there is no way Linux can get to the value.

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