For each color register, the weighted sum of its red, green, and blue values is calculated (30% red + 59% green + 11% blue) and written back into all three components of the color register. The original red, green, and blue values are lost.Transforms the red, green, and blue values of one or more color registers into the gray-scale equivalents.
Call with:
AH = 10H
AL = 1BH
BX = first color register
CX = number of color registers
Returns:
Nothing
Note:
For each color register, the weighted sum of its red, green, and blue values is calculated (30% red + 59% green + 11% blue) and written back into all three components of the color register. The original red, green, and blue values are lost.