Subject: Re: various scsi questions
To: Peter Seebach <email@example.com>
From: Bill Studenmund <firstname.lastname@example.org>
Date: 02/08/2000 13:29:03
On Tue, 8 Feb 2000, Peter Seebach wrote:
> In message <20000208214749.A1238@antioche.eu.org>, Manuel Bouyer writes:
> >1) what is really ultra2wide scsi (the one at 80MB/s) ? does it uses the same
> > cables as Ultrawide ? Can I mix ultra2wide and Ultrawide on the same bus ?
> > (I've never looked at ultra2wide scsi devices yet :)
> U2W is most often (always?) found as "LVD", an electrically different kind of
> 68-pin cable. Not the same cable, not compatible. All the devices I've seen
> so far can be jumpered to go back to being plain ultra-wide.
I was under the impression that LVD devices used the same 68-pin cables as
all other wide devices. Also, they auto-sense the voltages on the bus. If
everything is low voltage, they do LVD. Otherwise, they do single-ended