NES 2.0 Mapper 284: Difference between revisions

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(Created page with "285NES 2.0 Mapper 285 is used for the ''A65AS'' multicarts. Its UNIF board name is '''BMC-A65AS'''. =Banks= * CPU $8000-$BFFF: In 16 KiB mode:...")
 
(Replaced content with "NES 2.0 Mapper 284 is used for the homebrew conversion of the game ''Drip''. Its UNIF board name is '''UNL-DRIPGAME'''.")
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[[Category:Multicart mappers|285]]NES 2.0 Mapper 285 is used for the ''A65AS'' multicarts. Its UNIF board name is '''BMC-A65AS'''.
NES 2.0 Mapper 284 is used for the homebrew conversion of the game ''Drip''. Its UNIF board name is '''UNL-DRIPGAME'''.
 
=Banks=
* CPU $8000-$BFFF: In 16 KiB mode: 16 KiB switchable inner bank, 128 KiB switchable outer bank
* CPU $C000-$FFFF: In 16 KiB mode: 16 KiB fixed inner bank 7, 128 KiB switchable outer bank
* CPU $8000-$FFFF: In 32 KiB mode: 32 KiB switchable bank
* PPU $0000-$1FFF: 8 KiB unbanked CHR-RAM
 
=Data Latch=
* CPU $8000-$FFFF:
Bit 7654 3210
    ---------
    SM1O HBBB
    |||| |+++- Select 16 KiB inner PRG-ROM bank at CPU $8000-$BFFF in 16 KiB mode (bit 6=0)
    |||| |++-- Select 32 KiB PRG-ROM bank at CPU $8000-$FFFF in 32 KiB mode (bit 6=1)
    |||| +---- Select nametable mirroring if bit 7=0
    ||||      0: Vertical
    ||||      1: Horizontal
    ||++------ Select 128 KiB outer PRG-ROM bank at CPU $8000-$FFFF in 16 KiB mode (bit 6=0)
    ||+------- Select nametable mirroring if bit 7=1
    ||        0: Single-screen, page 0
    ||        1: Single-screen, page 1
    |+-------- Select PRG banking mode
    |          0: 16 KiB
    |          1: 32 KiB
    +--------- Select nametable mirroring type
                0: Horizontal/vertical (selected via bit 3)
                1: Single-screen (selected via bit 5)

Revision as of 01:16, 10 February 2018

NES 2.0 Mapper 284 is used for the homebrew conversion of the game Drip. Its UNIF board name is UNL-DRIPGAME.