X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 10 - video - alternate function select (vga)

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INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA) - SELECT VERTICAL RESOLUTION
        AH = 12h
        BL = 30h
        AL = vertical resolution
             00h 200 scan lines
             01h 350 scan lines
             02h 400 scan lines
Return: AL = 12h if function supported

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