The Soviet-made 1801VM2 CPU (a binary-compatible implementation of the PDP11 instruction set and QBUS interface) was developed in 1982. The 1801VM2 is a further development of the earlier 1801VM1 doubling the original 5MHz clock speed. From a constructive standpoint this CPU is a completely independent development.
There’s a wealth of interesting computer technology in the former USSR, and it’s great to see more of it make its way online.
The UUSR heavily cloned the PDP-11, particularly the LSI-11 and other QBUS chipsets. Throughout the latter half of the USSR-s lifetime, nearly every home computer was either an PDP-11 clone, or a ZX Spectrum clone. TETRIS was originally written on one of these PDP-11 clone home computers.
The PDP-11 was also cloned and used as a minicomputer/mainframe as well, along with the PDP-8, VAX and IBM System/360.
There was some home-grown architectures, and the soviets did also develop some home-grown reimplementations of certain architectures, but for the most part they were blatant copies of western designs.