NES 2.0 Mapper 402

NES 2.0 Mapper 402 denotes the J-2282 circuit board, used by the 22-in-1 Olympic Games multicart with 512 KiB PRG-ROM and unbanked 8 KiB CHR-RAM.

A~[1... FC.. MN.P PPPp]
        ||   || +-++++- PRG A18..A14
        ||   |+-------- 0: PRG A14=CPU A14 (NROM-256)
        ||   |          1: PRG A14=p (NROM-128)
        ||   +--------- 0: Vertical mirroring
        ||              1: Horizontal mirroring
        |+------------- 0: CHR-RAM write-protected
        |               1: CHR-RAM write-enabled
        +-------------- 0: CPU $6000-$7FFF open bus
                        1: CPU $6000-$7FFF mirror of $E000-$FFFF

The F bit is set to play the FDS-sourced version of Volleyball.