INES Mapper 154: Difference between revisions

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m (do the same simplification to the description that we did to m88)
(preceeding wasn't a minor edit.)
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[[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 Devil Man.


It is identical to [[iNES Mapper 088|Mapper 88]], except 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:


   $8000-$FFFF: [.Mxx xxxx]
   $8000-$FFFF: [.Mxx xxxx]

Revision as of 01:39, 16 July 2012

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, 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.