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Date:      Wed, 03 Nov 1999 08:14:45 MST
From:      "Jason Lewis" <gnarlymarley@hotmail.com>
To:        mike@sentex.net, Andre@HighCaliber.com
Cc:        freebsd-net@FreeBSD.ORG
Subject:   Re: Third Ethernet card "fxp2"
Message-ID:  <19991103151445.55217.qmail@hotmail.com>

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If you do use the auto assign, I believe that most motherboards provide an 
option of IRQ's that cannot be assigned.


----Original Message Follows----
From: Mike Tancsa <mike@sentex.net>
To: "HIGHCALIBER.COM - Andre" <Andre@HighCaliber.com>
CC: <freebsd-net@FreeBSD.ORG>
Subject: Re: Third Ethernet card "fxp2"
Date: Wed, 03 Nov 1999 09:54:03 -0500

At 08:34 AM 11/3/99 -0500, Andre Chang wrote:
 >Hi,
 >
 >Thanks,
 >
 >There are no IDE devices in the machine and there is a 7860 chip on the
 >motherboard. I finally resolved the problem by moving the card from slot 1
 >to slot 4 (PCI) I believe that there must have been some IRQ conflict. 
I'll
 >have to look that over again as I would like to put a scsi controller in 
the
 >free PCI slot.

Not all PCI slots are DMA capable, and there is usually one that forces you
to share an IRQ.  In your board's BIOS, try turning off the auto assign of
IRQs to the PCI slots, and instead assign some sane IRQs.  Since you have
no IDE make disable them in your BIOS as well as assigning DMA channels to
the IDE controllers.  5,10,11,14,15 should be safe to use.


 >Does anyone know if the fxp driver supports IRQ sharing?. with the newer
 >motherboards I've come across a lot of IRQ's assigned to more than one 
slot.

Perhaps there is no basis in it, but I was under the impression that where
possible, avoid IRQ sharing, although it should work.

	---Mike
------------------------------------------------------------------------
Mike Tancsa,                          	          tel 01.519.651.3400
Network Administrator,     			  mike@sentex.net
Sentex Communications                 		  www.sentex.net
Cambridge, Ontario Canada


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