RKV-11 controller available

Ethan Dicks ethan.dicks at gmail.com
Thu Nov 5 14:34:23 CST 2009


On 11/5/09, Philipp Hachtmann <hachti at hachti.de> wrote:
>> It is an RK-11D with a QBus converter.
> RK11D for Unibus with a converter in front? Is the converter general
> purpose? That would increase my
> interest...

The RK11D contains: M7254, M7255, M7256, and M7257 in a hex-height
backplane that fits well in a BA-11-type chassis (expansion BA-11, or
11/34 or 11/24 or 11/44 CPU enclosure, etc)

The RKV11D contains: M7254, M7255, M7256, and M7268, on a quad-height
backplane typically mounted in its own "11/03" type enclosure, that
interfaces to the host via Berg cables back to an M7269.


The RK11C/RK11D use a BC11-A (Unibus) cable to talk to the first
drive.  It plugs into the hex-height backplane.

The RKV11D uses a pair of 40-pin Berg cables (70-09026-00) identical
to what the RK8E uses.  Those plug into two 40-pin connectors on one
of the RKV11D modules (M7268) and get into the drive backplane via an
M993 paddle card.


Here's a module list of all the relevant cards:

 RK11D
M7254 - RK11 STATUS CNTRL
M7255 - RK11-D DISK CONTROL
M7256 - RK11-D REGISTERS BOARD
M7257 - RK11-D BUS CONTROL

vs

 RKV11D (BA-11N)
M7254 - RK11 STATUS CNTRL
M7255 - RK11-D DISK CONTROL
M7256 - RK11-D REGISTERS BOARD
M7268 - RKV11, RK11-D TO Q BUS ADAPTER

 RKV11D (Qbus host)
M7269 - RKV11 CONTROL (16-bit DMA only)

To answer your original question, the M7269 incorporates elements of a
"Qniverter", but is not specifically a generic Qbus-to-Unibus device.

-ethan



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