NES 2.0 Mapper 324

NES 2.0 Mapper 324 is used for Farid's homebrew 8-in-1 UNROM multicart board. It consists of an UNROM latch with an additional outer bank register. Mirroring is hard-wired. Its UNIF board name is FARID_UNROM_8-IN-1.

Outer Bank Register ($F000-$FFF7, write)

Mask: $8000?

D~7654 3210
  ---------
  1OOO L...
  |||| +---- 1=Lock Outer Bank
  |+++------ Select 128 KiB outer PRG-ROM bank
  +--------- Clock Generator (must be 1)

UNROM latch ($8000-$FFFF)

See INES Mapper 002.

See also

NesDev discussion