rs(7)                               CLIX                               rs(7)



  NAME

    rs - 32-channel RS232 serial board driver

  DESCRIPTION

    Each RS board may support up to 32 serial ports that behave as described
    in the termio special file.  Speeds of up to 19,200 baud can be maintained
    with all 32 ports open simultaneously.  Individual ports support speeds up
    to 38,400 baud.

    The format of the minor device mask for rs is shown below:

    Minor Device Format:

                 _______________________________________________
                |  7 |   6 |   5 |   4 |   3 |   2 |   1 |   0 |
                |________________|_____________________________|
                |                |                             |
                |     SR SLOT    |             PORT            |
                |________________|_____________________________|

    All ports support transmit data (TXD), receive data (RXD), request-to-send
    (RTS), clear-to-send (CTS), data carrier detect (DCD), data terminal ready
    (DTR), and data set ready (DSR).

    The ioctl(fildes, request, arg) function can be used with the following
    requests.  These requests are defined in the <sys/termio.h>) file.

    INGR_TTY_MODEM
           Reads current modem status.  Modem status is returned in the
           integer pointed to by arg.  Possible bit field values include:

           INGR_MODEM_DCD
                  Data carrier detect.

           INGR_MODEM_DSR
                  Data set ready.

    INGR_TTY_SET_RTS
           Enables/disables RTS/CTS hardware flow control.  If arg points to a
           nonzero integer value, RTS/CTS hardware handshake will be enabled.

    INGR_TTY_GET_RTS
           Reads RTS/CTS hardware flow control state.  A nonzero value will be
           returned in the integer pointed to by arg if RTS/CTS is enabled.

  FILES

    /dev/ttr??   The rs devices.




  2/94 - Intergraph Corporation                                              1

  rs(7)                               CLIX                               rs(7)



  RELATED INFORMATION

    Functions:  ioctl(2)

    Files:  termio(7)

















































  2                                              Intergraph Corporation - 2/94