Pentagon (computer)
Pentagon-1024SL v1.x
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| Also known as | Пентагон |
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| Type | Home computer |
| Release date | 1989 |
| Operating system | Sinclair BASIC, TR-DOS |
| CPU | КР1858ВМ1/3, Т34ВМ1, Z80A, B, H @ 3.5 MHz |
| Memory | 48 to 1024 KB |
| Website | pentagon |
The Pentagon (Пентагон) home computer was a clone of the British-made Sinclair ZX Spectrum 128. It was manufactured by amateurs in the former Soviet Union, following freely distributable documentation. Its PCB was copied all over the ex-USSR in 1991-1996, which made it a widespread ZX Spectrum clone. The name "Pentagon" derives from the shape of the original PCB (Pentagon 48), with a diagonal cut in one of the corners.
Many simple devices (upgrades) were invented to connect to the Pentagon with a soldering iron.
The Pentagon 1024SL v2.3 included most of the upgrades of the standard Spectrum architecture, including 1024 KB RAM, Beta 128 Disk Interface and ZX-BUS slots (especially for IDE and General Sound cards). This model also featured a "turbo" mode (7 MHz instead of the original's 3.50 MHz).
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