NAME
    Query -- query parallel port/line status

FUNCTION
    This command return the status of the parallel port lines and
    registers.

IO REQUEST
    io_Message      must have mn_ReplyPort initialized
    io_Device       set by opendevice
    io_Unit         set by opendevice
    io_Command      PDCMD_QUERY (09)

RESULTS
    io_Status        BIT  ACTIVE  FUNCTION

                     0     high   printer busy toggle (offline)
                     1     high   paper out
                     2     high   printer selected on the A1000
                                  printer selected & serial "Ring
                                  Indicator" on the A500/A2000
                                  Use care when making cables.
                     3      -     read=0,write=1
                   4-7            reserved

BUGS
    In a earlier version of this AutoDoc, BUSY and PSEL were reversed.
    The function has always been correct.