Pentagon

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LT|EN

Pentagon is a family of ZX Spectrum 128-compatible computers that became popular in the former Soviet Union and later in Russia. Its schematics and PCB documentation were widely shared, making Pentagon one of the best-known Spectrum clones.

It is based on the Z80 architecture and maintains compatibility with Spectrum software. Different versions added more memory, disk interfaces and expansion hardware, which made Pentagon an important part of the ZX Spectrum gaming, demoscene and home-built hardware culture.

Models in this section

• Pentagon-128K – the classic version with 128 KiB of memory.
• Pentagon-1024SL – a later, expanded version of the Pentagon architecture.

This section contains photographs, assembly material and essential information about these models.