255_in_1_(Multi)[Unknown][Duck_Hunt_100] pass 1

game
  crc: 1ec1dfeb
  title: 255_in_1_(Multi)[Unknown][Duck_Hunt_100]
  board: 204
    mirror: 1
    memory
      type: ROM
      size: 0x10000
      content: Program
    memory
      type: ROM
      size: 0x8000
      content: Character

E: Mapper: 204

ERROR:  Unsupported mapper


255_in_1_(Multi)[Unknown][Duck_Hunt_100] pass 2

game
  crc: 1ec1dfeb
  title: 255_in_1_(Multi)[Unknown][Duck_Hunt_100]
  board: 204
    mirror: 1
    memory
      type: ROM
      size: 0x10000
      content: Program
    memory
      type: ROM
      size: 0x8000
      content: Character

E: Mapper: 204

ERROR:  Unsupported mapper


255_in_1_(Multi)[Unknown][Duck_Hunt_100] pass 3

game
  crc: 1ec1dfeb
  title: 255_in_1_(Multi)[Unknown][Duck_Hunt_100]
  board: 204
    mirror: 1
    memory
      type: ROM
      size: 0x10000
      content: Program
    memory
      type: ROM
      size: 0x8000
      content: Character

E: Mapper: 204

ERROR:  Unsupported mapper