An Arcade board designed by Namco. Main CPU : M6809 Sub/Graphics CPU : M6809 Sound CPU : M6809 MCU : HD63701 (Controls and DAC sound) Sound chips : Namco custom 8 channel 4-bit PSG for sound effects, Yamaha YM3012 2 channel 8-bit DAC for voice, Yamaha YM2151+YM3012 FM chip for music. Video resoution : 288x244 pixels (36x28 tiles), 3 scrolling 64x64 tilemapped playfields, 1 scrolling 64x32 tilemapped playfield, 2 fixed 36x28 tilemapped playfields. Colours : 3 24-bit programmable RGB palette tables, 8 bits per color as follows : 127 16-color entries for the sprites, 8 256-color entries for the playfields, 8 256-color entries for the playfields shadow/highlight effects.

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