atkbdc man page on FreeBSD

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ATKBDC(4)		 BSD Kernel Interfaces Manual		     ATKBDC(4)

NAME
     atkbdc — the AT keyboard controller interface

SYNOPSIS
     options KBD_RESETDELAY=N
     options KBD_MAXWAIT=N
     options KBDIO_DEBUG=N
     device atkbdc

     In /boot/device.hints:
     hint.atkbdc.0.at="isa"
     hint.atkbdc.0.port="0x060"

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.

DRIVER CONFIGURATION
   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
	    process.  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 values 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.

SEE ALSO
     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⟩.

BSD			       February 9, 1999				   BSD
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