76 lines
2.6 KiB
Groff
76 lines
2.6 KiB
Groff
.\" $NetBSD: kg.4,v 1.10 2002/01/15 02:08:38 wiz Exp $
|
|
.\"
|
|
.\" Copyright (c) 1983, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" from: @(#)kg.4 8.1 (Berkeley) 6/5/93
|
|
.\"
|
|
.Dd June 5, 1993
|
|
.Dt KG 4 vax
|
|
.Os
|
|
.Sh NAME
|
|
.Nm kg
|
|
.Nd
|
|
.Tn KL-11 Ns / Tn DL-11W
|
|
line clock
|
|
.Sh SYNOPSIS
|
|
.Cd "kg0 at uba0 csr 0176500 vector kglock"
|
|
.Sh DESCRIPTION
|
|
NOTE: This driver has not been ported from
|
|
.Bx 4.4
|
|
yet.
|
|
.Pp
|
|
A
|
|
.Tn KL-11
|
|
or
|
|
.Tn DL-11W
|
|
can be used as an alternative real
|
|
time clock
|
|
source. When configured, certain system
|
|
statistics and, optionally, system profiling work
|
|
will be collected each time the clock interrupts. For
|
|
optimum accuracy in profiling, the
|
|
.Tn DL-11W
|
|
should be
|
|
configured to interrupt at the highest possible priority
|
|
level. The
|
|
.Nm kg
|
|
device driver automatically calibrates itself to the
|
|
line clock frequency.
|
|
.Sh SEE ALSO
|
|
.Xr config 8 ,
|
|
.Xr kgmon 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
driver appeared in
|
|
.Bx 4.2 .
|