NES 2.0 mapper 337 is used for a 12-in-1 Game Card multicart. Its UNIF board name is BMC-CTC-12IN1.
Mask: $C000 D~7654 3210 --------- PPMB B... |||+-+---- Select 128 KiB outer PRG-ROM bank ||+------- Select nametable mirroring type || 0: Vertical || 1: Horizontal ++-------- Select PRG-ROM banking mode 0: NROM-128 1: NROM-256 (inner bank bit 0 replaced with CPU A14) 2: UNROM (inner bank fixed to #7 at CPU $C000-$FFFF) 3: same as 2
CHR-RAM is write-protected in the NROM modes.
Mask: $C000 D~7654 3210 A~FEDC BA98 7654 3210 --------- ------------------- .... .BBB 11W. .... .... .... ||| +----------------- 1=Write-protect CHR-RAM +++- Select 16 KiB inner PRG-ROM bank at CPU $8000-$BFFF/$C000-$FFFF
NES 2.0 Mapper 350 is a variant for larger ROM sizes of this mapper.
Categories: Mappers with CHR RAM, Multicart mappers