--- Lawrence Walker <lgwalker(a)mts.net> wrote:
   The 1640 reminds me of the IBM 2011 with the power
supply in the monitor
  unit. 
PS/1?
  There was an informative thread a while back on the
mail list in
 the spring of 1999 regarding the 1640. I have one but alas no K-B.  
I was smart enough to recognize that the keyboard was special when I saw
it on the shelf 20 feet from the CPU.  The big tip-off that it was a
strange system was the humongous DIN connector on the end of one of
the monitor cables.
  ...some cartridges... buried somewhere...  When I run
across them I'll
 let you know. 
Thanks,
-ethan
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