Re: irq 13 math error
Derrik Pates (dpates@cavern.nmsu.edu)
Tue, 5 Mar 1996 12:19:42 -0700 (MST)
On Tue, 5 Mar 1996, pengo wrote:
> when i cat my /proc/interupts, i get the following:
>
> 13: 1 math error
> ^^^^^^^^^^
<blah blah blah>
>
> [kern 1.3.71 / gcc-2.7.0]
>
> I have seen this on several other systems aswell, but i'd like to know what
> this "error" is.
>
It's for returning math coprocessor exceptions. The coprocessor has to
have its own interrupt, and that's the one Intel originally chose, so
they stuck with it. I'm sure all the machines you've seen this on were
486DX or better machines, which all have math co-pros. So now you know.
--
Derrik Pates
dpates@cavern.nmsu.edu