Amazon.com: GBS-8220 CGA to VGA Double Output Game HD Video Converter Board : Toys & Games
GBS-82XX experiments | Something interesting is under way
Arcade Game Rgb/cga/ega/yuv To Dual Vga Hd Video Converter Adapter Board Gbs -8220 - Coin Operated Games - AliExpress
Amazon.com: RetroArcade.us Arcade Game RGB-CGA-EGA-YUV to VGA Arcade HD-Converter PCB (GBS-8220) Converts Older Arcade Systems to LCD Monitors Dual VGA : Toys & Games