INES Mapper 101: Difference between revisions

From NESdev Wiki
Jump to navigationJump to search
(reorder (put warning at top); link to m140.)
m (add cat:cnrom-like)
Line 1: Line 1:
[[Category:iNES Mappers|101]][[Category:Discrete logic mappers|101]][[Category:Bad iNES Mappers|101]]
{{DEFAULTSORT:101}}[[Category:iNES Mappers]][[Category:CNROM-like mappers]][[Category:Bad iNES Mappers]]
This mapper was allocated for a naïve misdumping of the [http://bootgod.dyndns.org:7777/profile.php?id=1547 JF-10] board that contains ''Urusei Yatsura - Lum no Wedding Bell''. JF-10 is identical to [http://bootgod.dyndns.org:7777/profile.php?id=3004 JF-09], which is the only [[iNES Mapper 087|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.
This mapper was allocated for a naïve misdumping of the [http://bootgod.dyndns.org:7777/profile.php?id=1547 JF-10] board that contains ''Urusei Yatsura - Lum no Wedding Bell''. JF-10 is identical to [http://bootgod.dyndns.org:7777/profile.php?id=3004 JF-09], which is the only [[iNES Mapper 087|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.



Revision as of 02:22, 15 May 2014

This mapper was allocated for a naïve misdumping of the JF-10 board that contains Urusei Yatsura - Lum no Wedding Bell. 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.

Supported in r3420 BizHawk, r2696 FCEUX (probably has been supported for eons), and reportedly MESS.

Registers:
---------------------------
 $6000-7FFF: [CCCC CCCC]
    C = Selects 8k CHR @ $0000

This is the same as mapper 87 but with the bits in order, and so has a better defined oversize extension; or the same as CNROM without bus conflicts.

Jaleco subsequently extended the JF-09 and JF-10 boards to add the ability to bank PRG in a GNROM-like manner. That was allocated to iNES Mapper 140.