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X-Hacker.org- BIOS ref. - <b>int 10h, 12h /bl=33h select grey-scale summing mcga, vga</b> http://www.X-Hacker.org [<<Previous Entry] [^^Up^^] [Next Entry>>] [Menu] [About The Guide]
Int 10h, 12h /BL=33h    Select Grey-Scale Summing                   MCGA, VGA

    Selects whether the colors in the color registers will be averaged
    to grey scales when palette or color registers are loaded, e.g. on
    a mode set.

        Entry   AH = 12h
                AL = 0 | 1   Enable | disable summing
                BL = 33h

        Return  AL = 12h   If function supported

See Also: Int 10h, 101Bh

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