1997_Heroes_8_in_1_(Multi)[Unknown][1997][YH011][Volly_Ball] pass 1

game
  crc: afad896a
  title: 1997_Heroes_8_in_1_(Multi)[Unknown][1997][YH011][Volly_Ball]
  board: 52
    mirror: 1
    memory
      type: ROM
      size: 0x100000
      content: Program
    memory
      type: ROM
      size: 0x100000
      content: Character

E: Mapper: 52

ERROR:  Unsupported mapper


1997_Heroes_8_in_1_(Multi)[Unknown][1997][YH011][Volly_Ball] pass 2

game
  crc: afad896a
  title: 1997_Heroes_8_in_1_(Multi)[Unknown][1997][YH011][Volly_Ball]
  board: 52
    mirror: 1
    memory
      type: ROM
      size: 0x100000
      content: Program
    memory
      type: ROM
      size: 0x100000
      content: Character

E: Mapper: 52

ERROR:  Unsupported mapper


1997_Heroes_8_in_1_(Multi)[Unknown][1997][YH011][Volly_Ball] pass 3

game
  crc: afad896a
  title: 1997_Heroes_8_in_1_(Multi)[Unknown][1997][YH011][Volly_Ball]
  board: 52
    mirror: 1
    memory
      type: ROM
      size: 0x100000
      content: Program
    memory
      type: ROM
      size: 0x100000
      content: Character

E: Mapper: 52

ERROR:  Unsupported mapper