$NetBSD: wskbd.4,v 1.5 2000/03/20 11:51:59 pk Exp $
Copyright (c) 1999
Matthias Drochner. All rights reserved.
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.Dd $Mdocdate: March 10 2016 $ .Dt WSKBD 4 .Os .Sh NAME .Nm wskbd .Nd generic keyboard support in wscons .Sh SYNOPSIS .Cd "wskbd* at ..." .Sh DESCRIPTION The .Nm driver handles common tasks for keyboards within the .Xr wscons 4 framework. It is attached to the hardware specific keyboard drivers and provides their connection to .Dq wsdisplay devices and a character device interface.
p The common keyboard support consists of: l -bullet t Mapping from keycodes (defined by the specific keyboard driver) to keysyms (hardware independent, defined in
a /usr/include/dev/wscons/wsksymdef.h ) . t Handling of .Dq compose sequences. Characters commonly not present as separate keys on keyboards can be generated after either a special .Dq compose key is pressed or a .Dq dead accent character is used. t Certain translations, like turning an .Dq ALT modifier into an .Dq ESC prefix. t Automatic key repetition
f ( Dq typematic ) . t Parameter handling for .Dq keyboard bells . t Generation of .Dq keyboard events for use by X servers. .El
p The .Nm driver provides a number of ioctl functions to control key maps and other parameters. These functions are accessible through the associated .Dq wsdisplay device as well. A complete list is in
a /usr/include/dev/wscons/wsconsio.h . The .Xr wsconsctl 8 utility allows access to key maps and other variables.
p The .Em console locator in the configuration line refers to the device's use as input part of the operating system console. A device specification containing a positive value here will only match if the device is in use as system console. (The console device selection in early system startup is not influenced.) This way, the console device can be connected to a known .Nm wskbd device instance.
p The .Nm driver traps certain key sequences intended to perform special functions. The .Cm Ctrl+Alt+Esc sequence will initiate the .Xr ddb 4 kernel debugger if the .Dq ddb.console .Xr sysctl 8 variable is set. When attached to a .Xr wsdisplay 4 device, .Cm Ctrl+Alt+Fx switches virtual terminals and the .Cm Shift+PgUp and .Cm Shift+PgDn combinations provide scrollback functionality if the underlying hardware driver supports it. When audio devices are supported, keys .Cm Mute , .Cm VolumeUp and .Cm VolumeDown tweak mixer settings. .Sh FILES l -tag -width /usr/include/dev/wscons/wsksymdef.h -compact t Pa /dev/wskbd* t Pa /usr/include/dev/wscons/wsksymdef.h t Pa /usr/include/dev/wscons/wsconsio.h .El .Sh SEE ALSO .Xr akbd 4 , .Xr comkbd 4 , .Xr hilkbd 4 , .Xr intro 4 , .Xr pckbd 4 , .Xr ukbd 4 , .Xr wscons 4 , .Xr wsmux 4 , .Xr zskbd 4 , .Xr wsconsctl 8