DEC MM15 core mem found

Al Kossow aek at
Wed Dec 9 08:57:48 CST 2015

On 12/8/15 11:52 PM, Pontus Pihlgren wrote:

> What where the failure(s) with System Modules in the PDP-6? cost?
> reliabilty?

Connectors. They had over the top and backplane connectors. They also
had problems with solder joints on rivets used for connecting traces
on the front and back side of the pcb.

I think Steve Russell talked about having to resolder all of the rivets
in SAIL's PDP-6 over time in his CHM oral history.

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