Tony Cole's Cray-1

From: William Donzelli <william_at_ans.net>
Date: Wed Apr 29 19:19:04 1998

> 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_at_ans.net
Received on Wed Apr 29 1998 - 19:19:04 BST

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