Int 17 Fn 84  - Alloy Ntnx, Mw386 - Generate Print Break                   [N]

   AH = 84h
   AL = mode
       00h NTNX compatibility
       02h MW386 v2+
       BX = logical device number
           00h-03h = LPT1-LPT4
           04h-07h = COM1-COM4

Note:  closes spool file and tells spooler to queue the print job (LPT1 only
     under MW386 in NTNX compatibility mode)