NES 2.0 Mapper 345: Difference between revisions
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[[Category:Multicart mappers]][[Category:MMC3-like mappers]][[Category:Mappers with scanline IRQs]][[Category:Mappers with CHR RAM]] | {{DEFAULTSORT:345}}[[Category:Multicart mappers]][[Category:MMC3-like mappers]][[Category:Mappers with scanline IRQs]][[Category:Mappers with CHR RAM]] | ||
NES 2.0 Mapper 345 is used for the ''New Star 6-in-1 Game Cartridge'' multicart. Unusually, it combines [[MMC3]] and [[AxROM]] games. Its UNIF board name is '''BMC-L6IN1'''. CHR data comes from 8 KiB of MMC3-banked CHR-RAM. | NES 2.0 Mapper 345 is used for the ''New Star 6-in-1 Game Cartridge'' multicart. Unusually, it combines [[MMC3]] and [[AxROM]] games. Its UNIF board name is '''BMC-L6IN1'''. CHR data comes from 8 KiB of MMC3-banked CHR-RAM. | ||
Latest revision as of 06:57, 26 May 2020
NES 2.0 Mapper 345 is used for the New Star 6-in-1 Game Cartridge multicart. Unusually, it combines MMC3 and AxROM games. Its UNIF board name is BMC-L6IN1. CHR data comes from 8 KiB of MMC3-banked CHR-RAM.
Outer Bank and Mode Register ($6000-$7FFF, write)
Mask: $E000 D~7654 3210 --------- OOMS mmPP |||| ||++- Select 32 KiB inner PRG-ROM bank in AxROM mode |||| ++--- Select PRG-ROM banking mode (0=AxROM, 1-3=MMC3) |||+------ Select 1 KiB CIRAM bank in one-screen mirroring mode ||+------- Select nametable mirroring type || 0: from MMC3 || 1: one-screen mirroring ++-------- Select 128 KiB outer PRG-ROM bank in either mode
As it uses the MMC3 clones's WRAM interface, writing to the Outer Bank register requires enabling and not write-protecting WRAM in the MMC's $A001 register.
MMC3-compatible registers
Mask: $E001 See MMC3.
