NES 2.0 Mapper 467
NES 2.0 Mapper 467 denotes the 47-2 MMC3-based circuit board, used for a 72-in-1 multicart. It is effectively INES Mapper 197 submapper 0 with an outer bank register and an NROM mode.
Mask: $F000?
D~[MSNQ QPPp]
||++-++++- PRG A18..A14
||+------- PRG banking mode
|| 0=NROM-128
|| 1=MMC3-based
|+-------- PRG (if N=1)/CHR banking mode
| 0=PRG A14..A13 from MMC3, PRG A19..A15 from NQQPP
| CHR A12..A10=PPU A12..A10, CHR A18..A13 from MMC3 CHR A17..A12, CHR A19=0
| 1=PRG A16..A13 from MMC3, PRG A19..A17 from NQQ
| CHR A10=PPU A10, CHR A18..A11 from MMC3 CHR A17..A10, CHR A19=1
+--------- Nametable mirroring
0=Vertical
1=Horizontal
The MMC3 clone ignores the PRG/CHR inversion bits D6 and D7 in the pointer register $8000, and its mirroring output is ignored in favor of the Outer Bank Register’s.