atkbd — the AT keyboard interface

       The atkbd driver was written by Søren Schmidt <sos@FreeBSD.org> and Kazutaka Yokota <yokota@FreeBSD.org>.
       This manual page was written by Kazutaka Yokota.

Debian                                          January 29, 2008                                        ATKBD(4)

       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 driver syscons(4) or vt(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.

   FunctionKeys
       The AT keyboard has a number of function keys.  They are numbered as follows and can be  associated  with
       strings  by  the  kbdcontrol(1)  command.  You can use a keyboard map file (see kbdmap(5)) to map them to
       arbitrary keys, particularly the functions in the range from 65 to 96 which are not used by default.

       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
       65, 66,...96         free (not used by default)

       See the man page for the kbdcontrol(1) command for how to assign a string to the function key.

KernelConfigurationOptions
       The following kernel configuration options control the atkbd driver.

       ATKBD_DFLT_KEYMAP
                   This option sets the default, built-in keymap of the atkbd driver to the named  keymap.   See
                   “EXAMPLES” below.

       KBD_DISABLE_KEYMAP_LOAD
                   The  keymap  can  be  modified  by  the kbdcontrol(1) command.  This option will disable this
                   feature and prevent the user from changing key assignment.

   DriverFlags
       The atkbd driver accepts the following driver flags.  They can be set either  in  /boot/device.hints,  or
       else from within the boot loader (see loader(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 keyboard 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.

       bit 3 (NO_PROBE_TEST)
             When  this  option  is  given,  the  atkbd  driver will not test the keyboard port during the probe
             routine.  Some machines hang during boot when this test is performed.

       The atkbd driver requires the keyboard controller atkbdc.  Thus, the  kernel  configuration  file  should
       contain the following lines.

             deviceatkbdcdeviceatkbd

       The following example shows how to set the default, built-in keymap to jp.106.kbd.

             deviceatkbdcoptionsATKBD_DFLT_KEYMAPmakeoptionsATKBD_DFLT_KEYMAP=jp.106deviceatkbd

       In both cases, you also need to have following lines in /boot/device.hints.

             hint.atkbdc.0.at="isa"hint.atkbdc.0.port="0x060"hint.atkbd.0.at="atkbdc"hint.atkbd.0.irq="1"

       The atkbd driver first appeared in FreeBSD 3.1.

       atkbd — the AT keyboard interface

kbdcontrol(1), atkbdc(4), psm(4), syscons(4), vt(4), kbdmap(5), loader(8)

optionsATKBD_DFLT_KEYMAPmakeoptionsATKBD_DFLT_KEYMAP=_keymap_name_optionsKBD_DISABLE_KEYMAP_LOADdeviceatkbd

       In /boot/device.hints:
       hint.atkbd.0.at="atkbdc"hint.atkbd.0.irq="1"