Dag-Erling Smørgrav wrote: > Peter Jeremy <peterjeremy_at_optushome.com.au> writes: >> There's a feature bit (CPUID_CX8) that advertises the availability of >> cmpxchg8b (and maybe some related instructions). My pre-MMX 586 has >> this bit set so I presume anything later than 486 will support it. >> (I'm not sure about the low-end VIA, GEODE etc clones). > > The Geode is a 486, and does not support it. > > The C3 however is a 586. The C3 Ezra and C3 Samuel / Samuel 2 do not > have CX8. I'm not sure about the C3 Nehemiah, I don't have one > running at the moment. The Nehemiah doesn't look like it has CX8.. from one of my systems running a PD10000 board: CPU: VIA C3 Nehemiah+RNG+ACE (1002.28-MHz 686-class CPU) Origin = "CentaurHauls" Id = 0x698 Stepping = 8 Features=0x381b83f<FPU,VME,DE,PSE,TSC,MSR,SEP,MTRR,PGE,CMOV,PAT,MMX,FXSR,SSE> --AntonyReceived on Sat Apr 14 2007 - 00:53:22 UTC
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