Topic summary

DEC PDP-11

Extracted from the Wikipedia article PDP-11.

SM-4, SM-1420, SM-1600, Electronika 100-25, Electronika BK series, Electronika 60, Electronika 85, DVK, UKNC, and some models of the SM EVM series (in the Soviet Union).
SM-4, SM-1420, IZOT-1016 and peripherals (in Bulgaria).
MERA-60 in Poland.
SM-1620, SM-1630 (in East Germany).
SM-4, TPA-1140, TPA-1148, TPA-11/440 (in Hungary).
SM-4/20, SM 52-11, JPR-12R (in Czechoslovakia).
CalData – Made in US, ran all DEC OSes. The CalData hardware was sufficiently DEC-compatible that CalData memory boards could be used in DEC PDP-11 systems.
CORAL series (made at ICE Felix in Bucharest) and the INDEPENDENT series (made at ITC Timișoara) running the RSX-11M operating system (in Romania). The CORAL series had several models: the CORAL 4001 was roughly equivalent to the PDP-11/04, the CORAL 4011 was a PDP 11/34 clone, while the CORAL 4030 was a PDP-11/44 clone. These were used in state-owned companies and in public universities, originally operated with punched cards, later through video terminals like the Romanian DAF-2020, to teach FORTRAN and Pascal, until replaced by IBM PC compatibles, starting in 1991.
Systime Computers models 1000, 3000, 5000 – OEM agreement for sales in the UK and Western Europe, but disputes originated over both intellectual property infringement and indirect sales to the Eastern Bloc.