In this folder you can find a design of an real time clock for Atari 2600.
Project files can be opened using Eagle. I don't provide gerber files at the moment, because the project is at experimental stage. However, the prototype works fine:
I designed this adapter primarily for my game - Berta and Butterflies. I wanted to make the game more similiar to the "Game & Watch" LCD game and display current time at title screen. It's a gadget, not a must have feature, but I'm determined to do it eventually.