New runtime configurable RAM/ROM card

A project log for HBC-56: 65C02 + TMS9918A on a backplane

HBC-56 A homebrew 8-bit computer with a backplane. Initially with a 65C02 CPU card, a TMS9918A VDP and dual AY-3-8910 audio.

troy-schrapelTroy Schrapel 05/28/2022 at 21:090 Comments

The latest card is complete. It's a 96KB RAM/ROM card with runtime-configurable banks/pages. This video covers the design, operation, construction and testing of the new card, including PLD development.