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
wide SCSI.

Take care,

Bill