RQDX3 on an 11/23?

[Pete Turnbull]

On Mar 16 2005, 12:46, John A. Dundas III wrote:
> At 2:05 PM -0500 3/16/05, Ethan Dicks wrote:
> >You can literally pull the CPU and/or memory from a MicroVAX I/II
and
> >drop in a KDF11 or KDJ11 and required memory, and *bam* - a
> >MicroPDP...
>
> I've done the J-11 <--> uVaxII exchange with pretty good success.
> Having the Console Panel (in the back, CK-KA630-A) for the uVax seems
> to be a necessity; not needed for the J-11.
>
> I have not tried the F-11 in a generic BA23, though I would expect it
> to work.  Will the J-11 correctly mate with the RUN/START/drive lock
> panel in the front?  How is that best handled without an actual 11/23
> or 11/23+ front panel?

The DC_OK/RUN/START/HALT and drives LED/switch panel on the front is
the same for all the microVAX and microPDP-11 series in a BA23.  Only
the badges get changed (they unclip).  The DC OK and RUN LEDs, and the
HALT and RESTART switches, connect directly to the backplane, and the
drive switches/LEDs connect to the signal distribution board, which in
turn would be connected to the RQDXn by a 50-way ribbon cable.

The console panel on the back for the KDJ11-B and KDJ11-F is different
to the microVAX one, of course.  It has a 2-digit display, a DB25M
instead of a DE9F, and only one rotary switch.  Interestingly, it uses
the same connectors and cables, so maybe it would work.  The important
bit would be the SLU cable, which is the 10-way ribbon.  I expect
that's the same, though I've never tried it.  You can set the console
baud rate, word size and parity with the DIP switches on the KDx11-B
itself.

-- 
Pete						Peter Turnbull
						Network Manager
						University of York