INT 21 - TopWare Network OS v5.10+ - GET PRINT SERVER'S SPOOLING QUEUE STATUS
        AX = FFCCh
        CL = printer server station address
        BH = start item number of spooling file for print server
        BL = number of the item to be retrieved
        DS:DX -> buffer for queued file information (see below)
Return: AL = status
            00h successful
                AH = number of spool files
                DS:DX buffer filled
            nonzero failed

Format of queued file information buffer [16-item array, one element]:
Offset  Size    Description
 00h 12 BYTEs   filename
 0Ch    DWORD   size
 10h    WORD    date
 12h    WORD    time
 14h 15 BYTEs   username
 23h    BYTE    count
 24h    BYTE    flag: header
 25h    BYTE    print number

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