INT 21 - Novell NetWare - PRINT SERVICES - GET LPT CAPTURE STATUS
        AX = F003h
Return: AH = status
            00h not active
            FFh active
                AL = connection ID (01h-08h)
Note:   this function is supported by Advanced NetWare 1.0+
SeeAlso: AX=B804h,AH=DFh/DL=00h,AH=DFh/DL=04h