Int 2F/AX=AD00h

AX = AD00h

Return:
AL = FFh if installed
BX = ??? (0100h for MS-DOS 3.3+)

Note: DOS 5+ DISPLAY.SYS chains to previous handler if AL is not one of the subfunctions listed here

See Also: AX=AD01h"DISPLAY" - AX=AD02h"DISPLAY"

Category: Video - Int 2Fh - D