INT 17 - Alloy MW386 - SPOOL COPY OF FILE
        AH = A0h
        AL = mode
            00h NTNX compatibility
                DX = ??? (NTNX, MW386 v1.x only)
            02h MW386 v2+
                BX = logical device number
                    00h-03h = LPT1-LPT4
                    04h-07h = COM1-COM4
        CX:SI -> ASCIZ pathname
Return: AL = status (see AH=81h)
Notes:  makes a copy of the specified file in the spooler's directory, allowing
          the original file to be modified or deleted while the copy is printed
        in mode 00h, the file is printed on logical LPT1