INES Mapper 115: Difference between revisions

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[[Category:iNES Mappers|115]][[Category:MMC3-like mappers|115]]
{{DEFAULTSORT:115}}[[Category:iNES Mappers]][[Category:MMC3-like mappers]]
iNES Mapper 115 denotes the 卡聖 (Kǎshèng) SFC-02B/-03/-004 boards, bearing an [[MMC3]]-clone with a 256 KiB outer CHR-ROM bank register and an NROM-like PRG-ROM register that can override the MMC3 clone's PRG-ROM bank. Used by:
'''iNES Mapper 115''' denotes the 卡聖 (Kǎshèng) SFC-02B/-03/-004 boards, bearing an [[MMC3]]-clone with a 256 KiB outer CHR-ROM bank register and an NROM-like PRG-ROM register that can override the MMC3 clone's PRG-ROM bank. Used by:
* ''A.V. 究極麻將 II'' (''A.V. Jiūjí Májiàng II'', Kǎshèng re-release, originally released by 哥德 (Gouder) on [[INES Mapper 116]])
* ''A.V. 究極麻將 II'' (''A.V. Jiūjí Májiàng II'', Kǎshèng re-release, originally released by 哥德 (Gouder) on [[INES Mapper 116]])
* ''包青天'' (''Bāo Qīngtiān'', Justice Pao)
* ''包青天'' (''Bāo Qīngtiān'', Justice Pao)
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* ''三國春秋: 四川省'' (''Sānguó Chūnqiū: Sìchuān Shěng'')
* ''三國春秋: 四川省'' (''Sānguó Chūnqiū: Sìchuān Shěng'')
* ''幽☆遊☆白書 Final'' (''Yū Yū Hakusho Final'', both Chinese and English versions)
* ''幽☆遊☆白書 Final'' (''Yū Yū Hakusho Final'', both Chinese and English versions)
 
* ''1997 Super HiK 16-in-1'' multicart
=Registers=
=Registers=
==NROM Override Register ($6000)==
==Mode/NROM Bank Register ($6000, write)==
  Mask: Probably $E001
  Mask: $E003
D~[MPN. PPPp]
    |||  ++++- If M=1: PRG A18..A14
    ||+------- 0: If M=1: PRG A14=p (NROM-128)
    ||        1: If M=1: PRG A14=CPU 14 (NROM-256)
    |+-------- PRG A19
    +--------- 0: MMC3 mode, PRG A18..A14=MMC3 PRG A18..A14
              1: NROM mode, PRG A18..A14=PPPp and "N" bit applies
Power-on value: $00
==Outer CHR-ROM Bank Register ($6001, write)==
Mask: $E003
   
   
  D~7654 3210
  D~[.... ...C]
  ---------
            +- CHR A19
  M.S. BBBb
Power-on value: $00
  | |  ++++- Select 16 KiB PRG-ROM bank at CPU
==Solder Pad Register ($6002, read)==
  | |        $8000-$BFFF and $C000-$FFFF
  Mask: $E003
  | +------- 0: Do not replace bit 0 (NROM-128)
  |          1: Replace bit 0 with CPU A14 (NROM-256)
  +--------- 0: Use PRG bank from MMC3; ignore $6000 bits 0-3/5
              1: Ignore PRG bank from MMC3; apply $6000 bits 0-3/5
 
==Outer CHR-ROM Bank Register ($6001)==
  Mask: Probably $E001
   
   
  D~7654 3210
  D~[.... .VVV]
  ---------
          +++- Solder Pad value
  .... ...+- Select 256 KiB CHR-ROM bank at PPU $0000-$1FFF
 
==MMC3-compatible registers ($8000-$FFFF)==
==MMC3-compatible registers ($8000-$FFFF)==
Mask: $E001, see [[MMC3]].
Mask: $E001, see [[MMC3]].
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=Notes=
=Notes=
* Unlike many similar mappers, the $600x registers are not connected to the MMC3 clone's WRAM interface and thus function regardless of whether WRAM is enabled or not.
* Unlike many similar mappers, the $600x registers are not connected to the MMC3 clone's WRAM interface and thus function regardless of whether WRAM is enabled or not.
* IRQ behavior resembles that of the MMC3C, i.e. a latch value of zero causes an IRQ on every scanline, on which the Chinese version of 幽☆遊☆白書 Final (Yuu Yuu Hakusho Final) depends.
* IRQ behavior resembles "Sharp" behavior, i.e. a latch value of zero causes an IRQ on every scanline, on which the Chinese version of 幽☆遊☆白書 Final (Yuu Yuu Hakusho Final) depends.


=Similar Mappers=
=Similar Mappers=
* [[INES Mapper 114]] has the same $6000 and $6001 registers, but additionally scrambles MMC3 register addresses and indices. Also, Mapper 114's IRQ behavior resembles that of the MMC3A, i.e. a latch value of zero disables IRQ.
* [[INES Mapper 114]] has the same $6000 and $6001 registers, but additionally scrambles MMC3 register addresses and indices. Also, Mapper 114's IRQ behavior resembles "NEC" behavior, i.e. a latch value of zero disables IRQ.
* [[INES Mapper 187]] has a similar NROM override register, placed at $5000
* [[INES Mapper 187]] has a similar NROM override register, placed at $5000
* [[INES Mapper 248]] is a duplicate of Mapper 115.
* [[INES Mapper 248]] is a duplicate of Mapper 115.

Revision as of 14:20, 17 February 2024

iNES Mapper 115 denotes the 卡聖 (Kǎshèng) SFC-02B/-03/-004 boards, bearing an MMC3-clone with a 256 KiB outer CHR-ROM bank register and an NROM-like PRG-ROM register that can override the MMC3 clone's PRG-ROM bank. Used by:

  • A.V. 究極麻將 II (A.V. Jiūjí Májiàng II, Kǎshèng re-release, originally released by 哥德 (Gouder) on INES Mapper 116)
  • 包青天 (Bāo Qīngtiān, Justice Pao)
  • 餓狼伝説 Special (Garō Densetsu Special, Kǎshèng re-release, originally released by 哥德 (Gouder) on INES Mapper 116)
  • 雷電 II - Thunderbolt Fighting Plane (Léidiàn II)
  • 三國春秋: 四川省 (Sānguó Chūnqiū: Sìchuān Shěng)
  • 幽☆遊☆白書 Final (Yū Yū Hakusho Final, both Chinese and English versions)
  • 1997 Super HiK 16-in-1 multicart

Registers

Mode/NROM Bank Register ($6000, write)

Mask: $E003

D~[MPN. PPPp]
   |||  ++++- If M=1: PRG A18..A14
   ||+------- 0: If M=1: PRG A14=p (NROM-128)
   ||         1: If M=1: PRG A14=CPU 14 (NROM-256)
   |+-------- PRG A19
   +--------- 0: MMC3 mode, PRG A18..A14=MMC3 PRG A18..A14
              1: NROM mode, PRG A18..A14=PPPp and "N" bit applies
Power-on value: $00

Outer CHR-ROM Bank Register ($6001, write)

Mask: $E003

D~[.... ...C]
           +- CHR A19
Power-on value: $00

Solder Pad Register ($6002, read)

Mask: $E003

D~[.... .VVV]
         +++- Solder Pad value

MMC3-compatible registers ($8000-$FFFF)

Mask: $E001, see MMC3.

Notes

  • Unlike many similar mappers, the $600x registers are not connected to the MMC3 clone's WRAM interface and thus function regardless of whether WRAM is enabled or not.
  • IRQ behavior resembles "Sharp" behavior, i.e. a latch value of zero causes an IRQ on every scanline, on which the Chinese version of 幽☆遊☆白書 Final (Yuu Yuu Hakusho Final) depends.

Similar Mappers

  • INES Mapper 114 has the same $6000 and $6001 registers, but additionally scrambles MMC3 register addresses and indices. Also, Mapper 114's IRQ behavior resembles "NEC" behavior, i.e. a latch value of zero disables IRQ.
  • INES Mapper 187 has a similar NROM override register, placed at $5000
  • INES Mapper 248 is a duplicate of Mapper 115.
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