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Date: Fri, 27 Jun 1997 09:57:50 +0200
From: Stefan Esser <se@FreeBSD.ORG>
To: Jon Inouye <jinouye@cse.ogi.edu>
Cc: freebsd-hardware@FreeBSD.ORG
Subject: Re: IRQ assignment for PII motherboards
References: <Pine.HPP.3.95.970626120428.4786A-100000@indurain.cse.ogi.edu>
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On Jun 26, Jon Inouye <jinouye@cse.ogi.edu> wrote:
> We just received two machines using Pentium II motherboards
> (Intel PD440FX) with AMI BIOS 1.00.04.DT0.  The problem is the
> BIOS configures the PCI SCSI and Ethernet devices to share the
> same IRQ.  While WindowsNT device drivers appear to have no problem
> with this (IRQ sharing is part of the PCI spec), some Linux and FreeBSD
> drivers do.  There are some free IRQs, but the BIOS assignment appears
> to be non-user-configurable.  I've looked for a SCU (System Configuration
> Utility) program for this motherboard on the Intel developers web
> site without success. Moving boards around and disabling the COM, USB,
> and LPT devices didn't help either.

Hi Jon!

I'm the maintainer of the FreeBSD PCI code, and that
PCI interrupt sharing doesn't work for all cards is
(bad) news to me ...

Could you please be more specific, and send a VERBOSE
boot log (i.e. enter "-v" at the "Boot: " prompt) ?
You didn't even give information on the FreeBSD version
you are trying to install ...

I'll either give further directions (or fix any bug in 
the code, if there really is one) in order to get you 
going ...

> The current solution is removing the SCSI controller and going with
> an IDE disk.  I'd appreciate any other suggestions or pointers to
> a SCU program I can use!

This is obviously inacceptable ...
But we will do better than that :)

Regards, STefan