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Stuart Johnson

Retired systems programmer programmer and hardware hacker.

Birmingham, Alabama
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stuart-johnson

This user joined on 12/14/2015.

Things I've Built

Expanded KIM-1, 1977-1978

6502 SBC computer with 12K memory expansion, dual cassette interfaces with motor control, 80 x 24 video display, finished wood cabinet similar to small upright piano, with keyboard & cassette drive inset.

1802 Computer, 1976

Breadboard computer somewhat like the COSMAC ELF. Hex keyboard, Hex data displays, discrete address buss. 256 bytes of NMOS RAM. Battery (rechargeable) powered. This project was wire wrapped.

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