AW: AHA1542 and dev kernel 115
Welwarsky, Matthias (Matthias.Welwarsky@Dresdner-Bank.com)
Thu, 27 Aug 1998 12:19:57 +0200
> -----Ursprüngliche Nachricht-----
> Von: Riccardo Facchetti [SMTP:fizban@tin.it]
> Gesendet am: Mittwoch, 26. August 1998 20:11
> An: Eric Youngdale
> Cc: linux-scsi@vger.rutgers.edu; linux-kernel mailing list
> Betreff: Re: AHA1542 and dev kernel 115
>
> On Mon, 24 Aug 1998, Eric Youngdale wrote:
>
> >
> > It could also be a conflict.
>
>
> Yes it could but the only conflict I can see is with the PS/2 mouse that
> uses IRQ 12 by default.
> I don't tink it clash with PS/2 mouse because I have not such a mouse and
> the support for it is disabled in the mobo BIOS. To confirm that IRQ 12 is
> free, I can see that the other SCSI ctrl I have (a PCI ncr53c810) is using
> IRQ 12 at boot (okay, remapped after the boot, but the PCI BIOS assign IRQ
> 12 to the device).
>
I´ve seen this happening on a GigaByte board once. No PS/2 Mouse
attached and the BIOS mapped the NIC to IRQ 12 - no go. I had to force IRQ
12 to "Legacy ISA" to have the BIOS keeping its hands off it and use a
different IRQ for the NIC. After all it seems that it´s not the fault of the
BIOS but of the mainboard design that blocked the IRQ line even if no device
was attached.
Gruss,
Matthias
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