NES 2.0 Mapper 294

NES 2.0 Mapper 294 denotes the 63-1601 multicart PCB, used for the 強捧 16-in-1 (1682) multicart consisting of 2 MiB worth of UNROM games.

Outer Bank Register ($4100, write)

Mask: $C100
D~[...M PPPP]
      | ++++- PRG A20..A17
      +------ Mirroring
               0=Vertical
               1=Horizontal