Author: Walter Faxon
Date: 18:09:51 01/11/06
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On January 11, 2006 at 09:44:57, Robert Hyatt wrote: >On January 10, 2006 at 18:10:15, Stuart Cracraft wrote: > >>Here's Butler Lampson, one of the inventors, of the Parc Alto >>talking about Seymour Cray and population-count units: >> >>http://research.microsoft.com/users/gbell/craytalk/sld051.htm > >Seymour said the same thing about the "leading zero" instruction, which was >about the same thing as "find first one bit (starting from left) since the >instruction just counting the leading zeros up to the first one. The Crypto >folks used both. > >And yes, the 7600/Cyber-176 was a fast box in its day. Chess 4.x used it to >drub other chess programs for a few of years until a certain program moved to >even faster hardware (the Cray-1). :) When computer designer Seymour Cray left Control Data in 1972, he was purported to have said, "The 7600 is my last _slow_ machine." Those were the days... -W:)ter
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