The SM-4 (CM-4) was a Polish PDP-11/40 computer clone, in the second half of 1980s. It was very popular in science and technology. The standard configuration included 128 or 256 KB core memory, tape puncher, two RK-05 removable 2.5 MB disks and two RK-05F fixed disks, two TU-10 drives and Videoton VDT-340 terminals. The SM-series also included the SM-3, without floating point processing, similar to DEC's PDP 11/40 and 11/34 models. In early production, ferrite core memory was used.

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  • The SM-4 (CM-4) was a Polish PDP-11/40 computer clone, in the second half of 1980s. It was very popular in science and technology. The standard configuration included 128 or 256 KB core memory, tape puncher, two RK-05 removable 2.5 MB disks and two RK-05F fixed disks, two TU-10 drives and Videoton VDT-340 terminals. The SM-series also included the SM-3, without floating point processing, similar to DEC's PDP 11/40 and 11/34 models. In early production, ferrite core memory was used. Operating systems commonly used, included: RT-11 (Rafos after partial translation) RSTS/E RSX-11 DSM-11 (DIAMS after partial translations) DEMOS and MNOS Similar models included the SM-1420, with semiconductor memory, and the SM-1600, a hybrid of the SM-1420 and the M-6000(?), a system produced in Minsk. The main producer was a Kiev-based factory in Ukraine.
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  • The SM-4 (CM-4) was a Polish PDP-11/40 computer clone, in the second half of 1980s. It was very popular in science and technology. The standard configuration included 128 or 256 KB core memory, tape puncher, two RK-05 removable 2.5 MB disks and two RK-05F fixed disks, two TU-10 drives and Videoton VDT-340 terminals. The SM-series also included the SM-3, without floating point processing, similar to DEC's PDP 11/40 and 11/34 models. In early production, ferrite core memory was used.
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  • SM-4
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