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.. SPDX-License-Identifier: CC-BY-SA-4.0

.. Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)

Introduction
============

The input/output interface manager provides a well-defined mechanism for
accessing device drivers and a structured methodology for organizing device
drivers.  The directives provided by the I/O manager are:

- :ref:`rtems_io_initialize`

- :ref:`rtems_io_register_driver`

- :ref:`rtems_io_unregister_driver`

- :ref:`rtems_io_register_name`

- :ref:`rtems_io_lookup_name`

- :ref:`rtems_io_open`

- :ref:`rtems_io_close`

- :ref:`rtems_io_read`

- :ref:`rtems_io_write`

- :ref:`rtems_io_control`