NES 2.0 Mapper 298

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NES 2.0 Mapper is used for the unlicensed game Lethal Weapon, which is actually a backport of Lethal Enforcers. Its UNIF board name is UNL-TF1201.

The board uses a VRC4 clone in the VRC4b configuration (CPU 0x02s to VRC4 A0, CPU 0x01s to VRC4 A1). The only difference is that register $F003 is non-functional and any writes to it must be ignored.