Date   : Sun, 21 Oct 2007 17:04:42 +0100
From   : pete@... (Pete Turnbull)
Subject: ACB4000 on modern SCSI adaptor ?

On 21/10/2007 16:34, Andrew Benham wrote:
> Every so often I revisit my thoughts on connecting my ACB4000
> bridge board and ADFS hard disk to a SCSI adaptor in one of my
> PCs and seeing if I can read the data from the disk.

> However is there a hardware challenge as well ?  I seem to
> recall a message on the list where someone had smoke coming from
> the 50-way SCSI cable - but was this as a result of connecting
> the ACB4000 to a modern SCSI adaptor, or was it as a result of
> connecting a modern SCSI disk to the 1MHz bus host adaptor ?

Almost certainly neither.  Smoke from a SCSI cable is because something 
on it is providing TERMPWR but the cable is upside-down on one 
connector, and therefore TERMPWR is shorted to ground.  Pretty much 
everything else on the cable is open-collector and won't be harmed by 
being upside down or wrongly connected.

-- 
Pete                                           Peter Turnbull
                                               Network Manager
                                               University of York