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From: Terry Lambert <terry@lambert.org>
Message-Id: <199706091814.LAA29703@phaeton.artisoft.com>
Subject: Re: Does SMC9332BDT work in 2.2.2R??
To: stesin@gu.net
Date: Mon, 9 Jun 1997 11:14:57 -0700 (MST)
Cc: bob@luke.pmr.com, matt@3am-software.com, hackers@FreeBSD.ORG
In-Reply-To: <Pine.BSF.3.96.970609185104.15820Q-100000@trifork.gu.net> from "Andrew Stesin" at Jun 9, 97 06:55:06 pm
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> > ... The
> > mother board is an ASUS P/I-XP6NP5 with 128MB of memory and all 5
> > PCI slots populated (3 SCSI adapters [NCR/SYMBIOS] and a #9 GXE64Pro
> > graphics card are in the other 4).
> 
> 	Try to avoid putting 'de' cards in the last slot;
> 	in your particular case I'd try to exchange SMC and video
> 	so video card will be the last.  Last PCI slots are
> 	known to refuse supporting bus-master devices, 'de' cards
> 	amongst them (been there, seen that).  Video doesn't care
> 	about this AFAIK.


Here is a duplicate of a response I've sent in the past.  I suspect
that it is the problem in your case.


| This is probably the problem (the 5th slot, not the bus mastering).
| 
| It has to do with PCI interrupt sharing.
| 
| The PCI INT's are normally daisy-chained, and slots 4 and 5 (if 5
| is present) are expected to share:
| 
|        slot 1       slot 2       slot 3       slot 4       slot 5
|         ,-.          ,-.          ,-.          ,-.          ,-.
| INT A --|A|-. ,------|B|-. ,------|C|-. ,------|D|----------|D|
|         | |  X       | |  X       | |  X       | |          | |
| INT B --| |-' \ ,----| |-' \ ,----| |-' \ ,----| |----------| |
|         | |    X     | |    X     | |    X     | |          | |
| INT C --| |---' \ ,--| |---' \ ,--| |---' \ ,--| |----------| |
|         | |      X   | |      X   | |      X   | |          | |
| INT D --| |-----' `--| |-----' `--| |-----' `--| |----------| |
|         `-'          `-'          `-'          `-'          `-'
| 
| By default, each PCI card will use the first interrupt connector,
| which will be A, B, C, or D, depending on the slot (note: old PCI
| hardware will *NOT* chain... it expects the boards to be jumper
| configurable, or all boards to share INT A).


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.