> -----Original Message-----
> From: hpa@transmeta.com [mailto:hpa@transmeta.com]
> By author: "B. James Phillippe" <bryan@terran.org>
> >
> > Greetings,
> >
> > Sorry for this somewhat OT question - I'll try to be brief.
> I have always
> > noticed that on x86 Linux boxes, IRQ 13 is for the FPU and
> is always "1" (I
> > assume this is from probing or testing at bootup). This
> value never seems
> > to change, so again I will assume that it is only used to signal FPU
> > errors. There is no "fpu IRQ" on my Alpha, obviously it
> has an FPU as
> > well. Is it's existance on the PC just some lame legacy issue?
> >
>
> Yup. It isn't even used to signal FPU errors on 486+ PCs.
>
> -hpa
It is in comaptibility mode. Which means we have to support it.
Nathan
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