BOUNCE rtl@rtlinux.org: Approval required: Non-member submissionfrom [Ron <rgray@intermind.net>] (fwd)

[Der Herr Hofrat <der.herr@hofr.at>]

>From owner-rtl Sat Jun  9 19:16:49 2001
Received: from intermind.net (terminus.intermind.net [199.3.230.2])
	by hq.fsmlabs.com (8.11.2/8.11.2) with ESMTP id f5A1GnC15890
	for <rtl@fsmlabs.com>; Sat, 9 Jun 2001 19:16:49 -0600
Received: from intermind.net (56k05.intermind.net [206.106.3.6])
	by intermind.net (8.11.2/8.11.2) with ESMTP id f5A130V05473
	for <rtl@fsmlabs.com>; Sat, 9 Jun 2001 18:03:00 -0700 (PDT)
Sender: root@intermind.net
Message-ID: <3B225956.33C9A31@intermind.net>
Date: Sat, 09 Jun 2001 19:13:58 +0200
From: Ron <rgray@intermind.net>
X-Mailer: Mozilla 4.73 [en] (X11; U; Linux 2.2.18 i586)
X-Accept-Language: en
MIME-Version: 1.0
To: rtl@fsmlabs.com
Subject: Re: [rtl] off-topic: PCI interrupts
References: <Pine.LNX.4.30.0106081436460.15691-100000@slowpoke.phy.anl.gov>
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from base64 to 8bit by hq.fsmlabs.com id f5A1GnC15891

Most PCI bus machines only have 4 interrupts available to PCI cards A,B,C and D.

The bios will map these as old ISA bus IRQ's 3-11 as needed, IRQ's 0,1,2,12-15
are not usually mapped to PCI expansion card slots. The first thing you should
try
is to just change which slot you have the card in. If your not using a bus mouse

(ps2 mouse port) try disabling it, which will free up IRQ 12 which usually also
results
in the PCI bus slots being assigned new IRQ's.





Ken Teh wrote:

> I have a RTLinux x86 box with a PCI device that shares the IRQ with the
> network card.  Originally, I had the device in another PC (with the same
> network card, but different motherboard), and had done my RTL development
> there.  Everything worked.  Now with the new motherboard, nothing runs
> because of the shared IRQ.
>
> My understanding of IRQs is sketchy, but it is my understanding that the
> motherboard BIOS is supposed to resolve IRQ numbers between the various PCI
> devices.  Do I have a faulty motherboard?
>
> Thanks, Ken
>
> ----- End of forwarded message from owner-rtl@fsmlabs.com -----
> -- [rtl] ---
> To unsubscribe:
> echo "unsubscribe rtl" | mail majordomo@rtlinux.org OR
> echo "unsubscribe rtl <Your_email>" | mail majordomo@rtlinux.org
> --
> For more information on Real-Time Linux see:
> http://www.rtlinux.org/rtlinux/

----- End of forwarded message from owner-rtl@fsmlabs.com -----