The CornBitXL™ is not intended as a facility to transmit copyrighted content. Please do not purchase CornBitXL™ 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 CornBitXL is fully reprogrammable with four 16/32KB 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. The included socket will made them even more likely to fit perfectly in your particular configuration.
Slot #1: 317053-01 PLUS/4 FUNCTION LOW
Slot #2: 317054-01 PLUS/4 FUNCTION HIGH
Slot #3: 318005-05 PLUS/4 & C16 KERNAL
Slot #4: 318008-01 1551 KERNAL
To reprogram with the Chip Tester, append four 16KB or 32KB binary files into a 64KB or 128KB file, respectively. Then those 4 ROMs will be available with the 2nd and 3rd DIP switches. Make sure to do a binary append.