Manual browser: pckbd(4)

PCKBD(4) Kernel Interfaces Manual PCKBD(4)


pckbdPC keyboard driver for wscons


pckbc* at isa?
pckbd* at pckbc?
wskbd* at pckbd? console ?


This driver supports PC/AT keyboards within the wscons(4) console framework. It doesn't provide direct device driver entry points but makes its functions available via the internal wskbd(4) interface.

The pckbd driver supports a number of different key mappings which can be chosen from with the kernel option PCKBD_LAYOUT at compile time or with the utility wsconsctl(8) (variable: “encoding”) at runtime. Other mappings can be used if the whole keymap is replaced by means of wsconsctl(8). The builtin mappings are at this time:

option wsconsctl language
KB_US us English/US keyboard mapping (default)
KB_UK uk English/UK keyboard mapping
KB_BE be Belgian
KB_CZ cz Czech (QWERTY)
KB_DK dk Danish with “dead accents”
KB_NL nl Dutch
KB_FI fi Finnish
KB_FR fr French
KB_DE de German with “dead accents”
KB_GR gr Greek
KB_HU hu Hungarian
KB_IT it Italian
KB_JP jp Japanese
KB_NO no Norwegian with “dead accents”
KB_PL pl Polish
KB_PT pt Portuguese
KB_RU ru Russian
KB_ES es Spanish
KB_SV sv Swedish with “dead accents”
KB_SF sf Swiss French
KB_SG sg Swiss German
KB_UA ua Ukrainian
KB_US|KB_DECLK us.declk English/US mapping for DEC
LK400-style keyboards with PC keyboard
interface (e.g., LK461)
KB_US|KB_DVORAK us.dvorak English/US keyboard with
“Dvorak” layout
KB_US|KB_COLEMAK us.colemak English/US keyboard with
“Colemak” layout

The KB_DE, KB_DK, KB_NO and KB_SV mappings can be used in the KB_NODEAD (“.nodead”) variant. This switches off the “dead accents”.

The KB_US, KB_JP and KB_US|KB_DVORAK mappings can be modified to swap the left CTRL and the CAPS LOCK keys by the KB_SWAPCTRLCAPS variant bit or the “.swapctrlcaps” suffix.

The KB_METAESC (“.metaesc”) option can be applied to any layout. If set, keys pressed together with the ALT modifier are prefixed by an ESC character. (Standard behaviour is to add 128 to the ASCII value.)

Because PC keyboard hardware doesn't contain a beeper, requests for “keyboard beeps” cannot be handled directly. On alpha and i386 a helper device attached to the pcppi(4) driver allows the use of the standard ISA speaker for this purpose. On acorn32, vidcaudio(4) performs this function.


To set a German keyboard layout without “dead accents” and sending an ESC character before the key symbol if the ALT key is pressed simultaneously, use wsconsctl -w encoding=de.nodead.metaesc. To set it at kernel build time, add
to the kernel configuration file.


The list of builtin mappings doesn't follow any logic. It grew as people submitted what they needed.
July 22, 2011 NetBSD 7.0