29 Apr
1998
29 Apr
'98
8:19 p.m.
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.
Maybe you are correct, but I am skeptical. 10K ECL just is not that fast
(2nS typical gate delay, 2.9nS worst case). The Cray-1s had only a 12.5nS
clock! 100K was just on the horizon at the time, so it was out of the
running, but MECL III was around at the time, and was a bit faster.
Perhaps you looked at a board from a Cray SSD (Solid state Storage Device
- basically a memory expansion)?
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.
Cyber 203 or 205.
William Donzelli
william(a)ans.net