Int 2F Fn 4027  UC - Diamond Stealth64 Video - Dmsstl.drv - ???            [V]

   AX = 4027h
   ???

Return: ???

Notes: called when ???
   a protected-mode handler for this function may be installed with the
     function RFV_HOOKINT2FHANDLER

See Also: AX=4021h,AX=4022h