Twin_Copters_(Unl)[Nice_Code][VT03][f_1][RAM_Initialization] pass 1

game
  crc: 1a9f8338
  title: Twin_Copters_(Unl)[Nice_Code][VT03][f_1][RAM_Initialization]
  board: 256
    memory
      type: ROM
      size: 0x8000
      content: Program
    memory
      type: ROM
      size: 0x6000
      content: Character

E: Mapper: 256

ERROR:  Unsupported mapper


Twin_Copters_(Unl)[Nice_Code][VT03][f_1][RAM_Initialization] pass 2

game
  crc: 1a9f8338
  title: Twin_Copters_(Unl)[Nice_Code][VT03][f_1][RAM_Initialization]
  board: 256
    memory
      type: ROM
      size: 0x8000
      content: Program
    memory
      type: ROM
      size: 0x6000
      content: Character

E: Mapper: 256

ERROR:  Unsupported mapper


Twin_Copters_(Unl)[Nice_Code][VT03][f_1][RAM_Initialization] pass 3

game
  crc: 1a9f8338
  title: Twin_Copters_(Unl)[Nice_Code][VT03][f_1][RAM_Initialization]
  board: 256
    memory
      type: ROM
      size: 0x8000
      content: Program
    memory
      type: ROM
      size: 0x6000
      content: Character

E: Mapper: 256

ERROR:  Unsupported mapper