NES 2.0 Mapper 555
NES 2.0 Mapper 555 is used for the Nintendo Campus Challenge 1991 cartridge (retroUSB version, which may or may not have been modified from the only known copy in existence).
NES 2.0 Mapper 555 is used for the Nintendo Campus Challenge 1991 cartridge (retroUSB version, which may or may not have been modified from the only known copy in existence).