On Fri, Sep 06, 2002 at 09:28:28PM -0400, Kenneth Culver wrote:
> > Note that you'll need to have 'options CPU_ENABLE_SSE' in your kernel
> > configuration file if you have a SSE-capable CPU, otherwise you'll get
> > SIGILL from certain applications (e.g. ncurses)
> What if you don't want to do this though? Athlon XP processors support SSE
> instructions, but not at the same time as 3dnow instructions. The
> processor has to switch modes or something like that. What if a user wants
> to actually use the 3dnow instructions? Does this mean that on an athlon
> XP which supports SSE instructions, if you don't want to enable them
> you'll catch SIGILL and die when using those "certain apps?" Just
> wondering.

I will get an AMD authoritative answer to this question.  Please wait a
week before discussing the issue more.

-- David

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