On Wed, 23 Oct 2002, Jack L. Stone wrote:

> 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.

That is not correct:

ad0: 57241MB <ST360021A> [116301/16/63] at ata0-master UDMA100
ad1: 78533MB <IC35L080AVVA07-0> [159560/16/63] at ata0-slave UDMA100

> 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

However, it *is* correct that all devices on a UDMA channel must support
UDMA, so yes, the above is a problem.  I don't recall if all devices must
also be the same UDMA speed (66/100/133) or not, bbelieve that is true
too.  This is not a BSD issue, it is part of the UDMA spec.

KeS


To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-questions" in the body of the message

Reply via email to