11/34 & Cool stuff, but what is it? (Q-bus gear)

From: CLASSICCMP_at_trailing-edge.com <(CLASSICCMP_at_trailing-edge.com)>
Date: Wed Nov 3 18:52:18 1999

>So I'm trying to collect the stuff I won at a recent auction, the most
>unexpected deal was the PDP 11/34 for $10 with the DEC Cassette tape
>transport. Its dirty and grimy but it seems complete. I could satisfy my
>desire for a Unibus -11 for now (and at a cost I appreciate :-)
>Anyone have any info on the DEC Cassettes? TU-??


> they are standard audio
>format cassettes and one of the cassetes that came with it claims to have
>PAL, EDIT, and LINK on it. This will be fun to explore.

Sounds like the standard cassette tape development tools.

>Then I bid on a rack of "junk" which was topped off by a Kennedy 9610 tape
>drive. I bid on it because the tape drive had what appearred to be a 50 pin
>cable going to a Q-bus card marked Emulex. In fact it was _two_ 50 pin
>cables and the Emulex card is labelled QT1310401-00-REV E. On the firmware
>the label reads QT1310201-02 REV K. What is it?

The QT13 emulates either a MS: (TS11) or MU: (TMSCP) type drive and
talks to tape drives with the Pertec-formatted formatted interface.

> I was hoping it was a SCSI controller but two connectors?

Not SCSI, it's Pertec formatted.

>Then the other interesting card was a national instruments 179055-01 which
>has an Intel 8291? on board (date code of either '84 or '91). Sort of a
>weird 40 pin connector that goes to what looks like the old GPIB connectors.

Yep, it's a IEEE-496 interface.

>Final question, how do you "de-rack" the 11/34? I can get it to rotate but
>I can't get it to let go and come out of the rack. I don't want to
>transport it in the rack so...

There were several different styles of chassis-mount slides on the 11/34
series. Are your slides shiny metal or are they grey? If they're shiny
metal, look for one shiny wobbly lever on each side that has to be
pressed in to release the catch.

 Tim Shoppa                        Email: shoppa_at_trailing-edge.com
 Trailing Edge Technology          WWW:   http://www.trailing-edge.com/
 7328 Bradley Blvd		   Voice: 301-767-5917
 Bethesda, MD, USA 20817           Fax:   301-767-5927
Received on Wed Nov 03 1999 - 18:52:18 GMT

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