NES 2.0 Mapper 335

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NES 2.0 mapper 335 is used for a 10-in-1 multicart. Its UNIF board name is BMC-CTC-09.

PRG-ROM and Mirroring Register ($C000-$FFFF)

Mask: probably $C000

D~7654 3210
  ---------
  ..MB pPPP
    || |+++- Select 32 KiB PRG-ROM bank at CPU $8000-$FFFF
    || +---- Select 16 KiB PRG-ROM bank if B=1
    |+------ Select PRG A14 Mode
    |         0: PRG A14=CPU A14 (NROM-256)
    |         1: PRG A14=p (NROM-128)
    +------- Select nametable mirroring mode
              0: Vertical
              1: Horizontal         

CHR-ROM Register ($8000-$BFFF)

Mask: probably $C000

D~7654 3210
  ---------
  .... CCCC
       ++++- Select 8 KiB CHR-ROM bank at PPU $0000-$1FFF