PCS Cadmus/QU68000 systems

pete pete at dunnington.plus.com
Wed Feb 17 15:17:56 CST 2016

On 17/02/2016 06:59, Arno Kletzander wrote:
>> Hi,
>> Is anyone interested in PCS Cadmus/QU68000 systems? We at Hack42
>> have no idea what to do with them. We need to downsize and these
>> take up a significant amount of our space.
>> See http://dev.ramdyne.nl/IMG_2750.JPG for photograph of the
>> stack.
>> If you know other people who are interested in beasts like these,
>> please pass this information on. -- Andreas
> Looks like interesting machinery from a German manufacturer!
> There is a short blurb about them on de:wp
> (https://de.wikipedia.org/wiki/Cadmus_Workstations) saying the PCS
> QU68000 were based on (who'd have guessed...) a 68000 processor on a
> QBus (!) while the later models sold under the CADMUS trademark held
> 68020/030 and, from 1985 on, MIPS RISC processors. They ran MUNIX, a
> V7 UNIX derivate, with some quite sophisticated cluster integration
> (network boot, "Newcastle connection" common superroot namespace,
> networked block devices) enabled by a board called the Intelligent
> Communications Controller.

The Heriot-Watt University in Edinburgh had some 68K CADMUS systems, 
which included a number of standard QBus boards and yes the OS was 
virtually 7th Edition.  When I got my 11/23 system (running real 
standard 7th edition, and including the original tapes) form them, I had 
a play with a CADMUS system.  it was quite a nice system, but one 
problem was that the quad-high CADMUS boards didn't have the same sort 
of stiffeners along the back edge that DEC boards do, so they sagged and 
had an occasional tendency to short out.

Pete Turnbull

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