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X-Hacker.org- BIOS ref. - <b>int 10h, 12h /bl=20h select alternative print-screen ega, mcga, vga</b> http://www.X-Hacker.org [<<Previous Entry] [^^Up^^] [Next Entry>>] [Menu] [About The Guide]
Int 10h, 12h /BL=20h    Select Alternative Print-Screen        EGA, MCGA, VGA

    Installs a Print-Screen routine from the video adapter's BIOS to
    replace the default Int 05h handler (which is usually hard-coded
    for 25-line screens).

        Entry   AH = 12h
                BL = 20h

        Return  (Int 05h vector-table entry updated)

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