LK201(4)              OpenBSD Programmer's Manual (PMAX)              LK201(4)

NAME
     lk201 - LK-201 keyboard input driver

DESCRIPTION
     The lk201 driver provides support for the Digital LK-201 keyboard and
     successors.   This support is automatically configured into the kernel,
     to map input keypress events into ACSII codes.  There is no way to dis-
     able this support.

     The kernel also includes support for an in-kernel ring-buffer structure
     for keypress events and pointer (mouse) events.  The fb driver redirects
     mouse and keyboard input into this in-kernel structure, and updates the
     position of a framebuffer cursor sprite to track the mouse.  This is for
     compatibility with the qv QVSS-style software interface used by X11 on
     DECstation and Vaxstation framebuffers.   This design offers significant-
     ly better performance on the Vaxstation-100 and Vaxstation-II, but makes
     it impossible to use alternative pointer or keyboard devices.

BUGS
     The lk201 support should be re-written as a real driver or as a pseudo-
     device driver.  The lk201 driver should use an in-kernel streams facili-
     ty, if one existed.

OpenBSD 2.9                     August 6, 1996                               1
