INES Mapper 154: Difference between revisions
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(Briefly described 128K extension without having to reference mapper 88 docs. (Isn't 206, the ordinary MIMIC-1/108/118 board, theoretically just an undersize 88 anyway?)) |
m (Updated deprecated bootgod link to NESCartDB equivalent.) |
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[[Category:iNES Mappers]][[Category:MMC3-like mappers]] | [[Category:iNES Mappers|154]][[Category:MMC3-like mappers|154]][[Category:in NesCartDB|154]] | ||
[[iNES Mapper 154]] represents '''NAMCOT-3453''', a board used only for the game Devil Man. | [[iNES Mapper 154]] represents '''NAMCOT-3453''', a board used only for the game [https://nescartdb.com/profile/view/3837/devil-man Devil Man]. | ||
It is identical to [[iNES Mapper 088|Mapper 88]], but with the addition of a single bit allowing for mapper-controlled one-screen mirroring: | It is identical to [[iNES Mapper 088|Mapper 88]], but with the addition of a single bit allowing for mapper-controlled one-screen mirroring: | ||
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Note that this bit is present over the entire 32kB range; it is not present in only odd or even addresses unlike the associated Namcot 108. | Note that this bit is present over the entire 32kB range; it is not present in only odd or even addresses unlike the associated Namcot 108. | ||
Like mapper 88, if the CHR ROM is larger than 65536 bytes, CHR ROM A16 is | Like mapper 88, if the CHR ROM is larger than 65536 bytes, CHR ROM A16 is connected to PPU A12. This means content in the left pattern table ($0xxx) comes from the first 64kB of CHR-ROM and content in the right pattern table ($1xxx) comes from the last 64kB of CHR-ROM. | ||
Latest revision as of 01:35, 14 September 2023
iNES Mapper 154 represents NAMCOT-3453, a board used only for the game Devil Man.
It is identical to Mapper 88, but with the addition of a single bit allowing for mapper-controlled one-screen mirroring:
$8000-$FFFF: [.Mxx xxxx] x = See mapper 206 documentation M = Mirroring 0 = 1ScA 1 = 1ScB
Note that this bit is present over the entire 32kB range; it is not present in only odd or even addresses unlike the associated Namcot 108.
Like mapper 88, if the CHR ROM is larger than 65536 bytes, CHR ROM A16 is connected to PPU A12. This means content in the left pattern table ($0xxx) comes from the first 64kB of CHR-ROM and content in the right pattern table ($1xxx) comes from the last 64kB of CHR-ROM.
