Recently design additional board to support output display graphics/text and sound generation. This card uses TMS9918 Video Display Processor and AY-3-8910 Sound Generator. This card have same dimensions like main CPU-IO board and controlled by main TTL decoder address IC.

The graphics VDP design are used similar than https://hackaday.io/project/165246-lm80c-color-computer and using 32KB Static RAM for video RAM explanied in https://cdn.hackaday.io/files/5789247676576/9918-SRAM.pdf.