Cold War Computing

Retrocomputing Blog

Retrocomputing

1802 RetroShield – SPI RAM

In the original 1802 Monitor + Tiny Basic Arduino code by Erturk Kocalar, the memory map is divided into three sections: ROM, onboard RAM, and external/simulated RAM. ROM is hardcoded in the Arduino's program memory, is of variable length, and...

PDP8 Timing Generator