NES 2.0 Mapper 342

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NES 2.0 Mapper 342 is used for the homebrew COOLGIRL multicart. In addition to native registers, it can simulate about 25 commercial-era mappers on a hardware level. It can address up to 128 MiB of PRG-ROM, 512 KiB of CHR-RAM, and 32 KiB of WRAM. Like the COOLBOY mapper that inspired it, CHR-RAM is filled with pattern data copied from PRG-ROM by the multicart menu after a game has been selected. Its UNIF board name is just COOLGIRL.

See also