INT 21 - Novell NetWare - PRINT SERVICES - GET PRINTER STATUS
        AH = E0h subfn 06h
        DS:SI -> request buffer (see below)
        ES:DI -> reply buffer (see below)
Return: AL = status
            00h successful
            FFh no such printer
Desc:   get current state of specified printer attached to the server
Note:   this function is supported by NetWare 4.0+, Advanced NetWare 1.0+, and
          Alloy NTNX

Format of request buffer:
Offset  Size    Description
 00h    WORD    0002h (length of following data)
 02h    BYTE    06h (subfunction "Get Printer Status")
 03h    BYTE    printer number (00h-04h)

Format of reply buffer:
Offset  Size    Description
 00h    WORD    (call) 0004h (size of following results buffer)
 02h    BYTE    flag: 00h printer active, FFh printer halted
 03h    BYTE    flag: 00h printer online, 01h printer offline
 04h    BYTE    current form type
 05h    BYTE    target printer number (00h-04h)
                same as number in request buffer unless rerouted by server
                console