19 May
2010
19 May
'10
2:12 p.m.
Date: Wed, 19 May 2010 10:02:29 -0700
From: wbblair3 at yahoo.com
Subject: The Declassified History of NSA Computers
To: cctalk at classiccmp.org
PDF report, "History of NSA General-Purpose Electronic Digital Computers":
http://www.governmentattic.org/3docs/NSA-HGPEDC_1964.pdf
Nice.
Also of interest, is specific changes / additions to the instruction sets that the NSA
requested. Seymour Cray knew they were going to be his best customer.
Take a look at his 'population count' sideways add, a useful instruction in
cryptography. It was included in all the Cray machines:
http://en.wikipedia.org/wiki/Hamming_weight
Randy
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