Happy_Diamond_(Unl)[Unknown] pass 1

game
  crc: b79f95e9
  title: Happy_Diamond_(Unl)[Unknown]
  board: 256
    memory
      type: ROM
      size: 0x20000
      content: Program
    memory
      type: RAM
      size: 0x2000
      content: Character
      volatile

E: Mapper: 256

ERROR:  Unsupported mapper


Happy_Diamond_(Unl)[Unknown] pass 2

game
  crc: b79f95e9
  title: Happy_Diamond_(Unl)[Unknown]
  board: 256
    memory
      type: ROM
      size: 0x20000
      content: Program
    memory
      type: RAM
      size: 0x2000
      content: Character
      volatile

E: Mapper: 256

ERROR:  Unsupported mapper


Happy_Diamond_(Unl)[Unknown] pass 3

game
  crc: b79f95e9
  title: Happy_Diamond_(Unl)[Unknown]
  board: 256
    memory
      type: ROM
      size: 0x20000
      content: Program
    memory
      type: RAM
      size: 0x2000
      content: Character
      volatile

E: Mapper: 256

ERROR:  Unsupported mapper