Anyone have ADDS Viewpoint Terminal Parts?

[atod]

I have an ADDS terminal that is acting flaky. Certain characters are being displayed incorrectly on both ends of the link. I can reproduce this reliably. I don't think it's they keyboard because I tried two different ones. Certain characters show up as "P" but with two vertical lines instead of one. I looked at the schematic and did some debug. I don't think it could be much else other then the MCU which has the UART integrated.

I like the vintage of this terminal and want to couple it with my S-100 system. Does anyone has a logic board or MCU to spare?

Thanks

 

[justin423]

resurrecting a 12 year old thread...
Cheap ADDS screen (no keyboard) on ebay located in Vermont.

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Do these need a keyboard made out of Unobtanium?