Pentagon (computer)

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Pentagon (computer)
Type Home computer
Released
Discontinued
Processor КР1858ВМ1/3, Т34ВМ1, Z80A, B, H @ 3.5 MHz
Memory 64 KB
OS Sinclair BASIC, TR-DOS

The Pentagon home computer, manufactured in former Soviet Union, is a clone of the British-made Sinclair ZX Spectrum 128. Its PCB was illegally copied all over the USSR, which made it the most widespread Soviet ZX Spectrum clone. Later models featured a "turbo" mode that allowed for higher processor speed than the original's 3.50 MHz.

The latest model is Pentagon 1024SL v2.2, which includes most of the upgrades of standard Spectrum architecture, including 1024 kB RAM, BetaDisc controller and NemoBus (IDE).

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Sinclair computers, derivatives, and clones (ZX80/81, ZX Spectrum, and QL clones)

By Sinclair ResearchZX80 | ZX81 | ZX Spectrum, Spectrum+, Spectrum 128K | Sinclair QL
By AmstradSpectrum +2, +3
By Timex SinclairTS 1000 | TS 1500 | TS 2048 | TC 2048 | TS 2068, TC 2068
By others:  Jupiter ACE | SAM Coupé | Didaktik | Dubna 48K | Hobbit | Pentagon | Scorpion | Sprinter

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