Hi all, 

After some discussion on reddit about russian PDP-11 clones, i made the 
(perhaps erronous) claim that the PDP series in general was cloned by the 
Soviets. 

I’m aware that there was a lot of QBUS/LSI PDP-11 clones, and depite poor 
documentation, there is significant evidence of PDP-8 clones. Also, depite not 
strictly a “PDP”, the VAX series was also cloned.

However, i’m curious whether anyone has any evidence of either the 18-bit or 
36-bit PDP machines being cloned? I imagine that given the rather lacklustre 
success of the 18-bit series, that there would have been less demand for an 
18-bit PDP machine in the Soviet Union, but i find it quite hard to believe 
that no attempt to clone the PDP-6 and PDP-10 machines would have been 
attempted. 

Does anyone here have any information on such clones?

Cheers, 

Josh Rice

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