Subject: Re: Strange connector
To: None <mrfusion@crue.jdwarren.com>
From: michael <michael@camaronet.de>
List: port-vax
Date: 08/10/1999 19:43:27
Hi !

> I recently got my hands on a VAX 6320, and found an unfamiliar connector 
> on it. As all the cables to/from the bulkhead had been disconnected 
> before i got there, i dontknwo what board they were even connected to.. 
> has anyone seen a connector about the size of a DB50 a-la-scsi2, but with 
> a tiny card-edge like plug shape inside, a-la-some of IBM's SCSI 
> offerings, on a VAX? as ive worked with older VAXen and microVAXen, i 
> dont know what a DSSI port physically looks like, but thought it would 
> look like SCSI. this plug ive never seen on anything from DEC before. and 
> ive only seen something like it on an IBM. There are two of them in a 
> pair. Any clues as to what this is? is it just DSSI?

Your description sounds a bit like a "mini-centronics" connector. This is used 
for SCSI by some mfgs. (like IBM), but i've never seen it on a VAX. DSSI looks 
exactly like SCSI-II (50pin HD-DSUB), but the gender is reversed and it has 2 
pins and 2 holes, each diagonally around the connector, for the big cable to be 
inserted easier, and to be screwed to the connector. You can put a DSSI and a 
SCSI-II terminator together, so the connector is just reversed.

Look at the chips on the card, maybe this can tell more about it. Leave out the 
DEC specific parts, look at the "usual" parts.

so long.. Michael