Cyber ECL Wiring

[Jon Elson]

On 11/29/2014 10:40 PM, Billy Pettit wrote:
> Chuck Guzis wrote:
>
> "It didn't start with the 170, did it Billy?  I remember a nice thick mat
> of twisted-pair wires on the backplanes of 6000s, as well as in a lot of
> attached controllers.  Taper pin technology."
>
> 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.
DEC KL10B had a lot of twisted pair wire-wrap on the 
backplane.  VAX 11/780 had
critical clock signals on twisted pair wire-wrap.  These 
were, in fact, ECL signals.

Jon