Need DTC brand Qbus SCSI board info - test-drb@ccmp.vtda.org

26 Nov 1998

On Nov 26, 12:49, CLASSICCMP(a)trailing-edge.com wrote:
...
  Subject: RE: Need DTC brand Qbus SCSI board info
 >No LSI chips on board; only two ROM chips (82S123N's with paper labels
"LSH
...
  >1" and LSD0" typed on them) plus others
are typical 74xxx-series chips (LS,
...
  >S and 7400-series) except bus I/F chips are the
typical DS8641N's.
 >It is suspected to be SCSI as there is a 50-pin pin connector on the
 >ejector end and a tag on the antistatic bag has "Probably SCSI" written
on
...
  it by what is
apparently a DEC dealer/reseller in Pittsburgh. 
 50-pin connectors might hint that it could be SCSI, but it could be
 a lot of other things too.  8-inch SA800-type floppy is the most obvious.

 DTC also sourced some boards which were controllers for SA1000-type
 and SA4000-type hard drives. 
It could also be a QIC tape controller; I've seen dual-height versions of
those from about that era.

I doubt it would be SCSI in discrete logic (no LSI) in that small a space.

-- 

Pete						Peter Turnbull
						Dept. of Computer Science
						University of York