CBM-IO

Note: this is a part of a larger set of repositories, with upet_family as the main repository.

This is the IO board for a re-incarnation of the Commodore B-Series to be used together with the Ultra-CPU board.

It is build on a Eurocard board and has only parts that can still be obtained new in 2025. In fact it uses an FPGA to emulate all the I/O chips of the B-Series. It uses the CS/A bus interface to connect with the CPU board.

Note: this is a work in progress!

Features