The CornBit™ is not intended as a facility to transmit copyrighted content. Please do not purchase CornBit™ if you intend to use it in a way incompatible with copyright law. Please inquire if you need a specific configuration. I will not program them with content that violates copyright.
If you have the BackBit Chip Tester, the CornBit™ is fully reprogrammable with four 8KB ROMs of your choice. This is made possible by the extra pins that hang over on either side. The extra pins only take up a few millimeters of space, so they should not get in the way of other components.
Slot #1: C64 KERNAL ROM
Slot #2: C64 KERNAL (BackBit Enhanced)
Slot #3: C64 BASIC ROM
Slot #4: C64 Character ROM
To reprogram with the Chip Tester, append four 8KB binary files into a 32KB file. Then those 4 ROMs will be selectable with the 1st and 2nd DIP switches. Make sure to do a binary append. If you have a 4KB ROM, append it twice. If you have a 2KB ROM, append it 4 times. The 3rd DIP switch must be off during programming, and on during usage.