من یک سرچی زدم حاصلش این بود

AH = 10h Select Colors in EGA/VGA
AL = 1 BL = color register (0 - 15), BH = color to set
AL = 2 ES:DX ptr to change all 16 colors and overscan number

http://gd.tuwien.ac.at/languages/c/p...own/advcw1.htm