Taito SJ System © 1981 Taito Corporation.
The Taito SJ System is an 8-bit arcade system board released by Taito in 1981.
Main CPU: Zilog Z80 @ 4 Mhz (or Motorola M68705 @ 1.5Mhz for some games).
Sound CPU: Zilog Z80 @ 3 Mhz.
Sound Chips: (4x) General Instrument AY8910, DAC.
Video Resolution: 256 x 224 Pixels.
Screen Refresh: 60.00 Hz.
Palette Colors: 64.