From owner-freebsd-questions  Wed Oct 23 16: 3: 3 2002
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Date: Wed, 23 Oct 2002 18:02:49 -0500
To: lewiz <purple@lewiz.info>, Steve Warwick <ukla@attbi.com>
From: "Jack L. Stone" <jackstone@sage-one.net>
Subject: Re: UDMA limited to 33 - resolution
Cc: freebsd-questions@FreeBSD.ORG
In-Reply-To: <20021023220429.GB1146@lewiz.org>
References: <B9DC48A8.3A70%ukla@attbi.com>
 <B9DC48A8.3A70%ukla@attbi.com>
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At 11:04 PM 10.23.2002 +0100, lewiz wrote:
>Hi,
>
>  Afaik, UDMA100 is only supported if there is just one device on the
>channel.  Feel free to shoot me if I am incorrect, which is quite
>possible.  Just double-check by asking Google or something - but I have
>a gut feeling this may be the case.
>
>-lewiz.

BANG!! The CDROM is on the same channel as ad2:

ad0: 76319MB <ST380021A> [155061/16/63] at ata0-master UDMA100
ad2: 38166MB <ST340016A> [77545/16/63] at ata1-master UDMA100
acd0: CDROM <FX5401W> at ata1-slave PIO4


>On Wed, Oct 23, 2002 at 12:38:00PM -0700, Steve Warwick wrote:
>> Hi, 
>> 
>> Thanks to all of you that answered my call for help.
>> 
>> Problem: dmesg / boot reported bus limited to UDMA33.
>> 
>> Results:
>> 
>> - CD-Rom was causing the problem. Once taken off the bus, UDMA100 was
>> recognized.
>> 
>> - Added a UDMA66 HD in place of the CD and the bus was limited to UDMA33
>> 
>> - Swapped the placement of the UDMA100 Master and the UDMA66 Slave on the
>> bus and all items were recognized correctly. Master is now last on the
>> chain.
>> 
>> 
>> hth
>> 
>> 
>> Steve Warwick


Best regards,
Jack L. Stone,
Administrator

SageOne Net
http://www.sage-one.net
jackstone@sage-one.net

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