FreeBSD 4.6.2 manual page repository

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atkbdc - the AT keyboard controller interface

 

NAME

      atkbdc - the AT keyboard controller interface
 

SYNOPSIS

      options KBD_RESETDELAY=N
      options KBD_MAXWAIT=N
      options KBDIO_DEBUG=N
      device atkbdc0 at isa? port IO_KBD
 

DESCRIPTION

      The keyboard controller atkbdc provides I/O services for the AT keyboard
      and PS/2 mouse style pointing devices.  This controller is required for
      the keyboard driver atkbd and the PS/2 pointing device driver psm.
 
      There can be only one atkbdc device configured in the system.
    Kernel Configuration Options
      The following kernel configuration options can be used to control the
      atkbdc driver.  They may be set in the kernel configuration file (see
      config(8)).
 
      KBD_RESETDELAY=X, KBD_MAXWAIT=Y
             The keyboard driver atkbd and the pointing device driver psm may
             ask the atkbdc driver to reset these devices during the boot pro‐
             cess.  It sometimes takes a long time before these devices respond
             to the reset command.  These options control how long the atkbdc
             driver should wait before eventually giving up -- the driver will
             wait X * Y msecs at most.  If the drivers seem unable to detect
             devices, you may want to increase these values.  The default val‐
             ues are 200 msec for X and 5 for Y.
 
      KBDIO_DEBUG=N
             Sets the debug level to N.  The default value is zero, which sup‐
             presses all debugging output.
      atkbd(4), psm(4), config(8)
 

HISTORY

      The atkbdc driver first appeared in FreeBSD 3.1.  It is based on the
      kbdio module in FreeBSD 2.2.
 

AUTHORS

      The kbdio module, the atkbdc driver and this manual page were written by
      Kazutaka Yokota 〈yokota@FreeBSD.org〉.
 

Sections

Based on BSD UNIX
FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon64, and EM64T), UltraSPARC, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.
 

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