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ATKBD(4)		    Kernel Interfaces Manual		      ATKBD(4)

NAME
       atkbd --	the AT keyboard	interface

SYNOPSIS
       options ATKBD_DFLT_KEYMAP
       makeoptions ATKBD_DFLT_KEYMAP=_keymap_name_
       options KBD_DISABLE_KEYMAP_LOAD
       device atkbd

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

DESCRIPTION
       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).

       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
       follows	and  can  be associated	with strings by	the kbdcontrol(1) com-
       mand.

       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.

DRIVER CONFIGURATION
   Kernel Configuration	Options
       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.

   Driver Flags
       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 com-
	     puters whose function keys	have special functions and these func-
	     tions 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  dur-
	     ing boot when this	test is	performed.

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

	     device atkbdc
	     device atkbd

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

	     device atkbdc
	     options ATKBD_DFLT_KEYMAP
	     makeoptions ATKBD_DFLT_KEYMAP=jp.106
	     device atkbd

       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"

SEE ALSO
       kbdcontrol(1), atkbdc(4), psm(4), syscons(4), loader(8)

HISTORY
       The atkbd driver	first appeared in FreeBSD 3.1.

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

GNU				 May 21, 1999			      ATKBD(4)
NAME | SYNOPSIS | DESCRIPTION | DRIVER CONFIGURATION | EXAMPLES | SEE ALSO | HISTORY | AUTHORS

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