Int 17 Fn A7  - Alloy Mw386 V2+ - Get/set Spool Flags                      [N]

   AH = A7h
   AL = spool flags
       bit 0: banner page enabled (see AH=A4h)
       bit 1: form feed enabled (see AH=A6h)
       bits 2-6: reserved (0)
       bit 7: set flags if 1, get flags if 0
   BX = logical device number
       00h-03h = LPT1-LPT4
       04h-07h = COM1-COM4

Return: AL = status (see AH=81h)

Note:  the documentation does not state which register contains the result of
     a GET

See Also: AH=A4h,AH=A6h