[COFF] [TUHS] A/UX [was Linux is on-topic]

[Arthur Krewat]

After going down that rabbit hole (thanks!)...

I love the motor/generator pair(s) they used to power the thing. I 
immediately thought of a motor-generator set my father had, to turn 60hz 
into 400hz, so he could test products they built at a defense contractor 
(and later, NASA contractor).

Sure enough, the Cray used 400hz AC input power.

On 8/15/2020 11:18 AM, Tony Finch wrote:
> moving to COFF ...
>
> Thomas Paulsen <thomas.paulsen at firemail.de> wrote:
>
>>> I'm sure everyone here knows this, but the Cray 1 (I think, the one
>> that had what looked like a circular bench seat around the bottom) was
>> designed like that because the clock was at the center and the clock
>> signal went to all the boards and was right because all the clock lines
>> to the boards were the same length.<
>>
>> you mean that? https://upload.wikimedia.org/wikipedia/commons/f/f7/Cray-1-deutsches-museum.jpg
> I found the Cray 1M site planning reference manual very interesting -
> here's a summary with links to the actual documents
>
> http://www.howtospotapsychopath.com/2012/06/15/they-called-it-big-iron-for-a-reason/
>
> Tony.