12 Jun
2014
12 Jun
'14
1:37 p.m.
On Wed, Jun 11, 2014 at 7:17 PM, Paul Anderson <useddec at gmail.com> wrote:
I once worked on a Gamma-11, a PDP11 system used to control medical
imaging cameras. The process was an 11/34. But one of the units in the
systme was a 5.25" expansion box (BA11-L?) with 2 4 slot backplanes in
it. One was Unibus, and on the 11/34 bus. The other was a 4-slot hex
height Qbus backplane. There was a DW11-B board set (DEC Unibus to Qbus
interface) with short ribbon cables betwen the boards linking the 2
backplanes. The Qbus backpalen contaiend the special interface cards for
the cmaera, etc. I guess they were only made as Qbus.
-tony
Does anyone remember where this was used?
It's a hex 9 slot backplane that
I think is Q-bus.
I have a DDV11-DK, 4 slots. It came in an 11/34 from a University
setting that also had an IBV11 and a DEC Unibus-Qbus converter. I'm
guessing it was what they could get at the time when they ordered an
11/34 with GPIB.