yet another pdp-11 in fgpa - test-drb@ccmp.vtda.org

26 Jun 2010

Johnny Billquist <bqt at softjar.se> wrote:
...
  I wasn't aware that any prototypes ever were
produced and came as
 far as being functional. I thought it was just paper work that
 had bee done. 
The 11/74 wasn't marketed, as pointed out in this thread, but a
few systems were build by DEC. A picture of such 11/74 system
was made available by Tim Shoppa, see

   http://www.trailing-edge.com/~shoppa/1174Xopen.jpg

You'll nicely see the four CPUs.

arcarlini at iee.org wrote:
...
  I've read somewhere that it [PDP-11/74] was full
of flat ribbon
 cables  and would have been a beast to maintain. 
Well, you see on the picture that there was quite a bit of
flat ribbon cables :).

The 'PDP 11/70 Multiprocessor Technical Manual (Preliminary Version)'
is on bitsavers, see

http://www.bitsavers.org/pdf/dec/pdp11/1174/EK-70MP-TM_PRE_1170mp_Prelim_Te…

and gives you a feeling of the modules and interconnects.

     Walter