INES Mapper 159: Difference between revisions
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[[Category:iNES Mappers|159]][[Category:Mappers with cycle IRQs|159]] | [[Category:iNES Mappers|159]][[Category:Mappers with cycle IRQs|159]] | ||
iNES Mapper 159 is used for [[Bandai FCG]] boards with an [[Bandai LZ93D50 pinout|LZ93D50 ASIC]] and a 128-byte serial EEPROM ( | iNES Mapper 159 is used for [[Bandai FCG]] boards with an [[Bandai LZ93D50 pinout|LZ93D50 ASIC]] and a 128-byte serial EEPROM (X24C01). The 128 bytes must be denoted as PRG-NVRAM in the [[NES 2.0]] header using byte value $10. | ||
=Game List= | =Game List= | ||
* ''Dragon Ball Z: Kyoushuu! Saiya-jin'' | * ''Dragon Ball Z: Kyoushuu! Saiya-jin'' | ||
| Line 20: | Line 20: | ||
=Registers= | =Registers= | ||
All registers function the same way as [[INES Mapper 016]], submapper 5, except that the serial EEPROM is not a 24C02 but a 24C01. Bandai's developers consistently thought the | All registers function the same way as [[INES Mapper 016]], submapper 5, except that the serial EEPROM is not a 24C02 but an X24C01. The X24C01 has operational differences compared to a 24C02 and 24C01. Bandai's developers consistently thought the X24C01 was a little-endian device, and their code clocks in address and data bytes assuming this. However, it's actually a big-endian device, and a multi-byte read or write from EEPROM will increment the address accordingly. | ||
Revision as of 23:59, 9 May 2020
iNES Mapper 159 is used for Bandai FCG boards with an LZ93D50 ASIC and a 128-byte serial EEPROM (X24C01). The 128 bytes must be denoted as PRG-NVRAM in the NES 2.0 header using byte value $10.
Game List
- Dragon Ball Z: Kyoushuu! Saiya-jin
- Magical Taruruuto-kun: Fantastic World!!
- Magical Taruruuto-kun 2: Mahou Daibouken
- SD Gundam Gaiden - Knight Gundam Monogatari
Banks
- CPU $8000-$BFFF: 16 KiB switchable PRG ROM bank
- CPU $C000-$FFFF: 16 KiB PRG ROM bank, fixed to the last bank
- PPU $0000-$03FF: 1 KiB switchable CHR ROM bank
- PPU $0400-$07FF: 1 KiB switchable CHR ROM bank
- PPU $0800-$0BFF: 1 KiB switchable CHR ROM bank
- PPU $0C00-$0FFF: 1 KiB switchable CHR ROM bank
- PPU $1000-$13FF: 1 KiB switchable CHR ROM bank
- PPU $1400-$17FF: 1 KiB switchable CHR ROM bank
- PPU $1800-$1BFF: 1 KiB switchable CHR ROM bank
- PPU $1C00-$1FFF: 1 KiB switchable CHR ROM bank
Registers
All registers function the same way as INES Mapper 016, submapper 5, except that the serial EEPROM is not a 24C02 but an X24C01. The X24C01 has operational differences compared to a 24C02 and 24C01. Bandai's developers consistently thought the X24C01 was a little-endian device, and their code clocks in address and data bytes assuming this. However, it's actually a big-endian device, and a multi-byte read or write from EEPROM will increment the address accordingly.
