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TKSROM refers to a variant of the TKROM board with the VRAM mirroring signals routed through the CHR side of the Nintendo MMC3 a different way, as described in iNES Mapper 118. It is used only for the Japanese game Ys III: Wanderers from Ys.


  • PRG ROM size: 128, 256 or 512 KB (DIP-28/32 Nintendo pinout)
  • PRG ROM bank size: 8 KB
  • PRG RAM: 8 KB with optional battery
  • CHR capacity: 128 KB ROM (DIP-32 Nintendo pinout)
  • CHR bank size: 1 KB and 2 KB
  • Nametable mirroring: Controlled by mapper, but in a nonstandard way (see Mapper 118).
  • Subject to bus conflicts: No

Solder Pad Config

To be added.