NES 2.0 Mapper 294
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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
