On Sun, Jul 6, 2008 at 3:57 PM, s. keeling <keeling@nucleus.com> wrote: > "lahf_lm"?!? Supports LAHF in 64 bit mode, which is the closest I could find on google. If you have that, I don't see why you wouldn't have lm as they should go together, AFAIK. With semprons you have to be careful if they'll support 64 bit mode. Some will, some won't. Most later ones will as it was originally designed to be a budget athlon.