1 Dec
2007
1 Dec
'07
10:01 a.m.
On Sat, Dec 01, 2007 at 10:46:18AM -0700, Richard wrote:
Item # 320190208819
They look too small to be Qbus and the module numbers are all 3
digits, whereas all the Qbus and UNIBUS module board numbers I've seen
had 4 digits.
You have probably only seen later stuff - have a look at a pre-1978
backplane-sized peripheral - the M105 is a Unibus Address Selector (from
memory - it's at least part of older, multi-board, Unibus peripherals).
These cards look like pretty much ordinary FLIP-CHIP modules, which
were used to make a variety of CPUs and periperals in the 1960s and
1970s. I don't recall any Qbus stuff made up of these, but there was
plenty of Unibus (PDP-11) and pre-OMNIBUS (PDP-8) stuff, chock full
of these and similar cards.
This looks like a good deal for someone looking for
spare flip-chip
modules or maybe someone who wants to reverse engineer this pile of
flip-chip modules and wire-wrapped backplane to figure out what it
used to do :-)
The seller shows a photo of the nameplate which *says* what it used
to do - it's an RS08 backplane. The RF08/RS08 is a fixed-head disk
for the PDP-8. The RF08 was the master, the RS08(s) was/were the
slave disks. Obviously, this doesn't include a drive mechanism,
nor the smart part of the RF08, but it's still an interesting piece.
-ethan
--
Ethan Dicks, A-333-S Current South Pole Weather at 1-Dec-2007 at 17:50 Z
South Pole Station
PSC 468 Box 400 Temp -27.2 F (-32.9 C) Windchill -43.1 F (-41.7 C)
APO AP 96598 Wind 4.6 kts Grid 124 Barometer 678.2 mb (10696 ft)
Ethan.Dicks at usap.gov http://penguincentral.com/penguincentral.html