Minimal relay computer. 81 relay

4 bit CPU, 16 to 64 bytes of rom, 4 to 16 nibbles of ram.
81 relay in the minimal configuration.

Enrico B.

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Description

Minimail relay computer
Just didactic.
4 bit CPU, 16 to 64 bytes of rom, 4 to 16 nibbles of ram.
81 relay in the minimal configuration.
Microcode and rom made using diodes.
Project allready done. I need a bit of help to debug it before building the hardware.
Here what is allready done.
Read the txt and look the jpg for info.
https://ispadmin.wirelessgroup.it/pannello/img/mail/relepc_svarioni.zip