NES 2.0 Mapper 402: Difference between revisions
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NES 2.0 Mapper 402 | {{DEFAULTSORT:402}}[[Category:Multicart mappers]][[Category:Mappers with CHR RAM]] | ||
'''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''. | |||
Latest revision as of 19:35, 11 December 2021
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.
