Is PIII an i686?

Alan Cox alan at lxorguk.ukuu.org.uk
Thu Jun 21 16:22:27 UTC 2007


> And so is a PentiumPro and a PII, AFAIK. Though there are some differences in
> instruction sets, so I don't know if for kernel purposes things as far back
> as a PII will actually run a 686 kernel.

They will. You need a pentium pro or instruction set compatible
processor. Due to a gcc/intel disagreement you also need the "cmov"
instruction. This is present on all Intel processors from Pentium Pro
onwards, AMD Athlon and onwards and other current chips.




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