UART(7-SysV)        RISC/os Reference Manual         UART(7-SysV)



NAME
     uart - RS2030/RC2030 IOP UART Driver

SYNOPSIS
     uart ports on RC2030 IOP

DESCRIPTION
     The uart driver supports the uarts on the R?2030 IOP.
     Except for the specialized ioctl's shown below, this driver
     is a standard serial stream terminal driver.

     The following ioctl calls apply only to the /dev/tty[01]:

     UTCSETTIMESTAMP          Turns on timestamping of all input
                              from the uart.  Each character
                              received from the uart is presented
                              in a timestamp structure. These are
                              composed sync characters, the uart
                              character, and the time in HZ since
                              boot.  The structure is defined in
                              /usr/include/sys/uart_ioctl.h.

     UTCCLRTIMESTAMP          Turns off uart input timestamping.

CAVEATS
     This driver does not currently support any modem signals.
     It is a DTE type device.

DIAGNOSTICS
     uartinit: iop_alloc failed
                         Could not initialize the IO processor.

     UART_LOST_XMIT %x   Character was sent out but transmit
                         interrupt was never recieved.

     uart%d: xmit buffer got stepped on.
     uart%d: rcv buffer got stepped on.
                         Internal buffering problems.

     uart%d: status 0x%x The IOP has reported this status.

     uart_receive: rcv_out == UART_BUF_SIZE
                         Probable buffer overrun.

     ASYNC_SOFT_OV (%x)  IOP input silo overrun.

     uart_receive: can't reset error!
                         Cannot acknowledge interrupt.

     uart_param: iop not available
     uart_flowcntl: iop not available
     uart_stop



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UART(7-SysV)        RISC/os Reference Manual         UART(7-SysV)



     uart_start_output
     uart_run_cmd: uart still busy
                         Unable to talk to IOP.

FILES
     /dev/tty[01]

SEE ALSO
     tty(7)














































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