INES Mapper 101: Difference between revisions
(oops, m101 doesn't exist) |
("erroneously"? I'm more likely to think "room for expansion") |
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This is the same as [[iNES Mapper 087|mapper 87]] but with the bits in order, or the same as [[CNROM]] without bus conflicts. | This is the same as [[iNES Mapper 087|mapper 87]] but with the bits in order, or the same as [[CNROM]] without bus conflicts. | ||
This mapper | This mapper seems to be a naive misdumping of the [http://bootgod.dyndns.org:7777/profile.php?id=1547 JF-10] board that contains ''Urusei Yatsura''. JF-10 is identical to [http://bootgod.dyndns.org:7777/profile.php?id=3004 JF-09], which is the only mapper 87 game with 32KiB CHR. Both JF-10 and JF-09 only differ from all their predecessors ([http://bootgod.dyndns.org:7777/profile.php?id=3006 JF-05], [http://bootgod.dyndns.org:7777/profile.php?id=2282 -06], [http://bootgod.dyndns.org:7777/profile.php?id=2283 -07], and [http://bootgod.dyndns.org:7777/profile.php?id=1732 -08]) by the addition of a single trace. In short, either mapper 87 should be capped to 16KiB CHR, or mapper 101 never had a hardware instantiation. In any case, mapper 101 has a better defined [[oversize]] extension. | ||
Revision as of 02:31, 3 November 2013
This mapper is used for instance by Urusei Yatsura - Lum no Wedding Bell, the Famicom version of Jaleco's Momoko 120%.
Supported in r3420 BizHawk, r2696 FCEUX (probably has been supported for eons), and reportedly MESS.
Registers:
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$6000-7FFF: [CCCC CCCC]
C = Selects 8k CHR @ $0000
This is the same as mapper 87 but with the bits in order, or the same as CNROM without bus conflicts.
This mapper seems to be a naive misdumping of the JF-10 board that contains Urusei Yatsura. JF-10 is identical to JF-09, which is the only mapper 87 game with 32KiB CHR. Both JF-10 and JF-09 only differ from all their predecessors (JF-05, -06, -07, and -08) by the addition of a single trace. In short, either mapper 87 should be capped to 16KiB CHR, or mapper 101 never had a hardware instantiation. In any case, mapper 101 has a better defined oversize extension.
