Undersea_(Unl)[Nice_Code][a_1] pass 1

game
  crc: cff7b896
  title: Undersea_(Unl)[Nice_Code][a_1]
  board: 256
    mirror: 1
    memory
      type: ROM
      size: 0x8000
      content: Program
    memory
      type: ROM
      size: 0x4000
      content: Character

E: Mapper: 256

ERROR:  Unsupported mapper


Undersea_(Unl)[Nice_Code][a_1] pass 2

game
  crc: cff7b896
  title: Undersea_(Unl)[Nice_Code][a_1]
  board: 256
    mirror: 1
    memory
      type: ROM
      size: 0x8000
      content: Program
    memory
      type: ROM
      size: 0x4000
      content: Character

E: Mapper: 256

ERROR:  Unsupported mapper


Undersea_(Unl)[Nice_Code][a_1] pass 3

game
  crc: cff7b896
  title: Undersea_(Unl)[Nice_Code][a_1]
  board: 256
    mirror: 1
    memory
      type: ROM
      size: 0x8000
      content: Program
    memory
      type: ROM
      size: 0x4000
      content: Character

E: Mapper: 256

ERROR:  Unsupported mapper