The Percussor © 1981 Orca.
Main CPU : Zilog Z80 (@ 4 Mhz), Zilog Z80 (@ 1.78975 Mhz) Sound Chips : General Instrument AY8910 (@ 1.78975 Mhz) Players : 2 Control : 8-way joystick Buttons : 2
Released in October 1981.
Game's ROM.