Snakes_(Unl)[Waixing] pass 1

game
  crc: 9e207c47
  title: Snakes_(Unl)[Waixing]
  board: 256
    memory
      type: ROM
      size: 0x4000
      content: Program
    memory
      type: ROM
      size: 0x4000
      content: Character

E: Mapper: 256

ERROR:  Unsupported mapper


Snakes_(Unl)[Waixing] pass 2

game
  crc: 9e207c47
  title: Snakes_(Unl)[Waixing]
  board: 256
    memory
      type: ROM
      size: 0x4000
      content: Program
    memory
      type: ROM
      size: 0x4000
      content: Character

E: Mapper: 256

ERROR:  Unsupported mapper


Snakes_(Unl)[Waixing] pass 3

game
  crc: 9e207c47
  title: Snakes_(Unl)[Waixing]
  board: 256
    memory
      type: ROM
      size: 0x4000
      content: Program
    memory
      type: ROM
      size: 0x4000
      content: Character

E: Mapper: 256

ERROR:  Unsupported mapper