4_in_1_(Multi)[Unknown][Mapper_204][90_Tank_TDG] pass 1

game
  crc: c0f0d838
  title: 4_in_1_(Multi)[Unknown][Mapper_204][90_Tank_TDG]
  board: 204
    memory
      type: ROM
      size: 0x10000
      content: Program
    memory
      type: ROM
      size: 0x8000
      content: Character

E: Mapper: 204

ERROR:  Unsupported mapper


4_in_1_(Multi)[Unknown][Mapper_204][90_Tank_TDG] pass 2

game
  crc: c0f0d838
  title: 4_in_1_(Multi)[Unknown][Mapper_204][90_Tank_TDG]
  board: 204
    memory
      type: ROM
      size: 0x10000
      content: Program
    memory
      type: ROM
      size: 0x8000
      content: Character

E: Mapper: 204

ERROR:  Unsupported mapper


4_in_1_(Multi)[Unknown][Mapper_204][90_Tank_TDG] pass 3

game
  crc: c0f0d838
  title: 4_in_1_(Multi)[Unknown][Mapper_204][90_Tank_TDG]
  board: 204
    memory
      type: ROM
      size: 0x10000
      content: Program
    memory
      type: ROM
      size: 0x8000
      content: Character

E: Mapper: 204

ERROR:  Unsupported mapper