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ATKBD(4)              DragonFly 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 atkbd0 at atkbdc? 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 syscons(4) console driver.

     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) 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.


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 in the kernel
     configuration file.

     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.


EXAMPLES

     The atkbd driver requires the keyboard controller atkbdc.  Thus, the
     kernel 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
     jp.106.kbd.

           options ATKBD_DFLT_KEYMAP
           makeoptions ATKBD_DFLT_KEYMAP=jp.106
           device atkbd0 at atkbdc? irq 1


SEE ALSO

     kbdcontrol(1), atkbdc(4), psm(4), syscons(4), boot(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.

DragonFly 5.7-DEVELOPMENT        May 21, 1999        DragonFly 5.7-DEVELOPMENT

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