The Brain Board ][ is a ROM card for Apple II, which allows a few use cases, primarily use of Apple 1 emulation (Wozaniam Pack) including Cassette Interface on an Apple II, use of on-card ROM in place of motherboard ROM, i.e. to use Integer Basic on a IIe.

Compatible only with Apple II, II+, and IIe systems.

The Gerbers can be downloaded from the Github repository, however, they were generated using Mike's original files and it took some work to get them to manufacture correctly here. I cannot guarantee other fabrication places will process the board layers and outline correctly.

When ordering these, PCBWay also has an option to bevel the edge connectors. I strongly recommend using this option. They may ask to shorten the copper fingers of the edge connector to accommodate to beveling process; this is absolutely fine.