This is a C64 cartridge board that I designed based on my needs and some existing designs available online. The board is configured to work with the W27C512 EEPROM. There are several configurations for purchase available. You can get either just the board, the board with parts, the board with all parts soldered and the board with a blank W27C512 EEPROM chip. One more option, if you want me to program the chip for you I won’t supply images but if you were to send me bin files that you’d want programmed onto the chip I’d be happy to do that for you. This chip can store a total of 4 ROM Cartridge image files and they can be selected by manipulating the A14 and A15 jumpers based on the table on the cartridge.