All information on this page was taken from: http://www.geocities.co.jp/SiliconValley-SanJose/6808/ and http://www.pipitan.com/x68.html
It is a graphics accelerator & PCM sound board for X68000 manufactured by Ninety-nine Electric Ltd (九十九電機(株)). The board has 2MB VRAM which allows X68000 to display Truecolor and it can play PCM sound in 48/44.1/32/24/22.05KHz mono or stereo. This board was manufactured to expand the graphics display capabilities and to provide CD-quality sound playback.
The connectors
① | RGB OUT | Connect to the monitor |
② | RGB IN | Connect to the RGB output which comes from X68000 |
③ | PCM sound source LINEOUT | PCM sound output. Connect to amplifier, etc.. |