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From: bhaskar@fluke.UUCP
Newsgroups: net.micro
Subject: Re: Ah, yes, the Pdp-7.
Message-ID: <1017@fluke.UUCP>
Date: Thu, 7-Jul-83 13:03:32 EDT
Article-I.D.: fluke.1017
Posted: Thu Jul  7 13:03:32 1983
Date-Received: Fri, 8-Jul-83 19:15:45 EDT
References: <510@pitt.UUCP>
Lines: 16

Has anyone else out there used a PDP-1?  The PDP-7 sounds very much
like a direct descendant of the 1.  I fondly remember a PDP-1D (there
were only two built, #s 45 and 48, I believe, and when Stanford junked
theirs we got it at the Indian Institute of Technology, Kanpur).  It
had 32K of 18-bit words in 4K pages, but Stanford had modified it to
add an index register and other goodies.  Consequently, one of the
instructions was FFI -- Fiddle Following Instruction (sic) which did
what you think it did because only 5 bits were reserved for the
opcode!  And, yes, it played a mean game of Space War (I understand the
original was written for the other PDP-1D at MIT by McCarthy or Minsky
-- can anyone corroborate?).  When there was a program bug, we checked
the hardware along with the software...  Are there any IIT/K people on
the net who were there more recently than 1975 and who know what
happened to it?

K.S. Bhaskar {allegra,lbl-csam,microsoft,sb1,uw-beaver}!fluke!bhaskar