INT 5F - HP 95LX/100LX/200LX GRAPHICS PRIMITIVES - SET FILL MASK AH = 01h ES:DI -> 8-byte fill mask Note: the fill mask represents an 8x8 pixel box and is repeated as necessary when drawing filled rectangles; it is always aligned with the byte boundaries of video memory, regardless of the actual boundaries of the rectangle SeeAlso: AH=02h