Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!decvax!microsof!fluke!bhaskar 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