INT 10 - VIDEO - Video7 VGA,VEGA VGA - INSTALLATION CHECK AX = 6F00h BX = 0000h Return: BX = 5637h ('V7') indicates Video7 VGA/VEGA VGA extensions are present SeeAlso: AX=6F01h,AX=6F02h,AX=6F03h,AX=6F04h,AX=6F05h