Messages in this thread | | | Date | Tue, 4 May 1999 00:40:06 -0500 (CDT) | From | Phil Brutsche <> | Subject | Re: /proc/cpuinfo wrong for Intel 486SX-33!! |
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On Mon, 3 May 1999, Rafael Reilova wrote:
[snip] > IIRC, Intel introduced the cpuid instruction with the DX-100 and Pentiums, > so a 486SX-25 is indistiguishable from any other 486 that doesn't have the > cpuid. In fact, there is no way to tell it is an Intel even. Only 486 > Cyrixes are identified by the kernel, and that's because they put some > DEVID registers in there from the beginning. I'm not sure about AMD's, if > we knew for sure that only Intel's 486 didn't have cpuid we could default > to the "GenuineIntel" string, yet I think AMD also made some 486 without > cpuid. Anybody who knows 486 lore around? I think a safer bet would be to say "Intel introduced the CPUID instruction with late-model 486s and Pentiums". I have a '486SX-33 here that supports the CPUID instruction. The computer was bought in July '94.
For AMDs, I don't know about AMD486's, but AMD5x86s (hot-rodded '486s) also support CPUID (have one at work that supports CPUID).
Beyond that, I think I'll get off the soapbox for someone else.
---------------------------------------------------------------------- Phil Brutsche pbrutsch@creighton.edu | brutsche@uswest.net
Microsoft: "Where do you want to to today?" Linux: "Where do you want to go tomorrow?"
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