Photograph of Commodore VIC-20
Evan-Amos / Wikimedia Commons / Public domain

First million-selling Commodore computer. RAM expanders and cartridge flash devices remain in production.

Published open-source PCB projects

VIC-20 32K RAM cartridge board Open source · MIT

VIC-20 32K RAM cartridge

Open 32 KB memory expansion cartridge for the Commodore VIC-20.

Other catalogued projects

Mod License Notes
VIC-20 flash / RAM expanders Mixed / partial source 3K/8K/32K expanders and multicarts. Mix of open and commercial boards.

Browse these projects in the 3D PCB mod directory. Open-source rows can be shallow-cloned into the git bucket. Generated board renders belong on the artifact CDN, not in git. See the catalog wiki note.