Zeta toggle-switch computer

The Zeta is a minimal Z80 toggle-switch computer. It has a Zilog Z80 microprocessor, 256 bytes of RAM and the only interface is the front panel which directly sets and reads the address and data buses.

There is a video of it executing Euclid's algorithm:

There are more details on the github page: https://github.com/jmacarthur/zeta256

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