Metro_Mania_(Unl)[Nice_Code] pass 1

game
  crc: b1f5ed15
  title: Metro_Mania_(Unl)[Nice_Code]
  board: 256
    memory
      type: ROM
      size: 0x20000
      content: Program
    memory
      type: ROM
      size: 0x20000
      content: Character

E: Mapper: 256

ERROR:  Unsupported mapper


Metro_Mania_(Unl)[Nice_Code] pass 2

game
  crc: b1f5ed15
  title: Metro_Mania_(Unl)[Nice_Code]
  board: 256
    memory
      type: ROM
      size: 0x20000
      content: Program
    memory
      type: ROM
      size: 0x20000
      content: Character

E: Mapper: 256

ERROR:  Unsupported mapper


Metro_Mania_(Unl)[Nice_Code] pass 3

game
  crc: b1f5ed15
  title: Metro_Mania_(Unl)[Nice_Code]
  board: 256
    memory
      type: ROM
      size: 0x20000
      content: Program
    memory
      type: ROM
      size: 0x20000
      content: Character

E: Mapper: 256

ERROR:  Unsupported mapper