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From
SubjectRe: 2.4.0-test11-pre7: isapnp hang
Date
Followup to:  <20001119233450.H20970@redhat.com>
By author: Tim Waugh <twaugh@redhat.com>
In newsgroup: linux.dev.kernel
>
> Reading from port 0x313 (my ISA NE2000 is at 0x300-0x31f) hangs my
> machine dead. Unfortunately, reading from that port is exactly what
> the isapnp code does on boot, if compiled into the kernel.
>
> Is it the network card's fault (probably), or is there a less invasive
> probe that isapnp could use (unlikely, I guess)?
>

Try reserving ports 0x300-0x31f on the kernel command line
("reserve=0x300,0x20").

I'm surprised isapnp uses a port in such a commonly used range,
though.

-hpa
--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt
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