Cyber ECL Wiring

Chuck Guzis cclist at
Sun Nov 30 00:27:50 CST 2014

On 11/29/2014 08:40 PM, Billy Pettit wrote:

> You're right - the 170 was the first use of main frame wire wrap at
> CDC.  I've never seen any other machine that used twisted pair wire
> wrap.  When I left the project, they were trying to defelop a machine
> to automate the wiring.  It was not going well.

I've got a couple of Eurcard 10K ECL boards with twisted pair all over 
the place.  Seems to be some sort of 12-bit CPU, from the looks of things.

There was also some sort of stapled-wire technology that was automated. 
  I don't recall the name of it.

> The earlier 6000, 7000 machines used twited pair with taper pins.
> Their wire mats were huge, more than 10 inches thick in some places.
> That was one of the problems they were trying to solve.

Penlight held in the mouth, go digging into the mat with both hands...



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