System 2 © 1985 Sega Enterprises, Ltd.
Main CPU: Zilog Z80 @ 4 MHz
Sound CPU: Zilog Z80 @ 4 MHz
Sound chip: SN76496 @ 2 MHz, SN76496 @ 4 MHz
Video resoution: 256 x 224
Board composition: Main board & rom board.
Hardware Features: 2 layers+sprites, hardware collision detection