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Digital Equipment Corporation PDP-8

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  Digital Equipment Corporation PDP-8 by Bill Degnan - 07/04/2023 18:59
Drew helping wheel our new DEC PDP-8 computer, donated to Kennett Classic museum in late October 2022. I drove the computer from Chicago a few weeks after VCF MW.



Front panel view, DEC PDP-8 computer


This is the rack model acquired in late fall 2022. The system can run the "chase the lights" program indicating a minimum CPU function. Powering off and then on again, the system retains the values of the chase the lights program and will re-run again.

NEXT: Document cards installed, detailed pictures and testing with a Teletype ASR 33.

Just so you know, I have powered up this system 25 times and worked with the front panel, but I wanted to clear a good block of time to restoration, kind of saving this for the right month or two to really get into it properly. Dave Gesswein came by to help do a surface level inspection of the computer and he felt it was in pretty good shape.

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  PDP-8 Testing by Bill Degnan - 08/16/2023 23:48
Photo of flipchips that make up the the memory side of the backplane.


More Photos

NEXT: Record specific test results to track down the flip chip (or two or three) that have faults, preventing RAM from being correctly saved. I think the core memory itself is OK.

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