Int 17 Fn 0502  U - Emulaser Eltsr - Set ???                               [P]

   AX = 0502h
   BL = Emulaser port (31h = LPT1, 32h = LPT2, 33h = LPT3)
   CL = ???
   DL = ???

Return: (see AX=0500h)

See Also: AH=04h,AX=0500h,INT 1A/AH=E5h