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atkbd - the AT keyboard interface



      atkbd - the AT keyboard interface


      options ATKBD_DFLT_KEYMAP
      makeoptions ATKBD_DFLT_KEYMAP=_keymap_name_
      device atkbd0 at atkbdc? irq 1


      The atkbd driver, together with the atkbdc driver, provides access to the
      AT 84 keyboard or the AT enhanced keyboard which is connected to the AT
      keyboard controller.
      This driver is required for the console drivers syscons(4) and pcvt(4).
      There can be only one atkbd device defined in the kernel configuration
      file.  This device also requires the atkbdc keyboard controller to be
      present.  The irq number must always be 1; there is no provision of
      changing the number.
    Function Keys
      The AT keyboard has a number of function keys.  They are numbered as fol‐
      lows and can be associated with strings by the kbdcontrol(1) command.
      Function Key number  Function Key
      1, 2,...12           F1, F2,... F12
      13, 14,...24         Shift+F1, Shift+F2,... Shift+F12
      25, 26,...36         Ctl+F1, Ctl+F2,... Ctl+F12
      37, 38,...48         Shift+Ctl+F1, Shift+Ctl+F2,... Shift+Ctl+F12
      49                   Home and Numpad 7 (without NumLock)
      50                   Up Arrow and Numpad 8 (without NumLock)
      51                   Page Up and Numpad 9 (without NumLock)
      52                   Numpad -
      53                   Left Arrow and Numpad 4 (without NumLock)
      54                   Numpad 5 (without NumLock)
      55                   Right Arrow and Numpad 6 (without NumLock)
      56                   Numpad +
      57                   End and Numpad 1 (without NumLock)
      58                   Down Arrow and Numpad 2 (without NumLock)
      59                   Page Down and Numpad 3 (without NumLock)
      60                   Ins and Numpad 0 (without NumLock)
      61                   Del
      62                   Left GUI Key
      63                   Right GUI Key
      64                   Menu
      See the man page for the kbdcontrol(1) command for how to assign a string
      to the function key.
    Kernel Configuration Options
      The following kernel configuration options control the atkbd driver.
                  This option sets the defauilt, built-in keymap of the atkbd
                  driver to the named keymap.  See EXAMPLES below.
                  The keymap can be modified by the kbdcontrol(1) command.
                  This option will disable this feature and prevent the user
                  from changing key assignment.
    Driver Flags
      The atkbd driver accepts the following driver flags.  They can be set
      either in the kernel configuration file (see config(8)), or else in the
      User Configuration Menu at boot time (see boot(8)).
      bit 0 (FAIL_IF_NO_KBD)
            By default the atkbd driver will install even if a keyboard is not
            actually connected to the system.  This option prevents the driver
            from being installed in this situation.
      bit 1 (NO_RESET)
            When this option is given, the atkbd driver will not reset the key‐
            board when initializing it.  It may be useful for laptop computers
            whose function keys have special functions and these functions are
            forgotten when the keyboard is reset.
      bit 2 (ALT_SCANCODESET)
            Certain keyboards, such as those on some ThinkPad models, behave
            like the old XT keyboard and require this option.


      The atkbd driver requires the keyboard controller atkbdc.  Thus, the ker‐
      nel configuration file should contain the following lines.
            device atkbdc0 at isa
            device atkbd0 at atkbdc? irq 1
      The following example shows how to set the default, built-in keymap to
            options ATKBD_DFLT_KEYMAP
            makeoptions ATKBD_DFLT_KEYMAP=jp.106
            device atkbd0 at atkbdc? irq 1
      kbdcontrol(1), atkbdc(4), pcvt(4), psm(4), syscons(4), boot(8), config(8)


      The atkbd driver first appeared in FreeBSD 3.1.


      The atkbd driver was written by Søren Schmidt 〈〉 and
      Kazutaka Yokota 〈〉.  This manual page was written by
      Kazutaka Yokota.


Based on BSD UNIX
FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon64, and EM64T), UltraSPARC, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.

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