29 Apr
1998
29 Apr
'98
1:26 p.m.
William Donzelli:
I do not think the Cray-1s used 10K ECL - I believe
they were custom parts
and were faster (10K gates have a delay around 2 nS). Only four types of
chips were used in the whole beast - I think two were OR/NOR gates, one
was a flip-flop, and the other RAM.
It is some years since I looked at the Cray 1 in the Deutches Museum in
Muenchen (Munich), but I distinctly recall seeing lots of 10xxx chips in
it. I remember I had just been given a board from the CPU of a Cyber
two-hunderd-and-something (?) that had been thrown out by Muenchen
Technical University a few months earlier, and this board has lots of
100xxx chips on it.
Philip.