Int 10 Fn 4F08 - VESA SuperVGA BIOS V1.2+ - Get/set Dac Palette Control [V] AX = 4F08h BL = function 00h set DAC palette width BH = desired number of bits per primary color 01h get DAC palette width Return: AL = 4Fh if function supported AH = status BH = current number of bits per primary (06h = standard VGA)