72 lines
2.4 KiB
Groff
72 lines
2.4 KiB
Groff
.\" $NetBSD: kg.4,v 1.13 2005/06/20 13:25:25 peter Exp $
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.\"
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.\" Copyright (c) 1983, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" from: @(#)kg.4 8.1 (Berkeley) 6/5/93
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.\"
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.Dd June 5, 1993
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.Dt KG 4 vax
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.Os
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.Sh NAME
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.Nm kg
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.Nd
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.Tn KL-11 Ns / Ns Tn DL-11W
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line clock
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.Sh SYNOPSIS
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.Cd "kg0 at uba0 csr 0176500 vector kglock"
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.Sh DESCRIPTION
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NOTE: This driver has not been ported from
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.Bx 4.4
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yet.
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.Pp
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A
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.Tn KL-11
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or
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.Tn DL-11W
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can be used as an alternative real
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time clock
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source. When configured, certain system
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statistics and, optionally, system profiling work
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will be collected each time the clock interrupts. For
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optimum accuracy in profiling, the
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.Tn DL-11W
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should be
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configured to interrupt at the highest possible priority
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level. The
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.Nm kg
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device driver automatically calibrates itself to the
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line clock frequency.
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.Sh SEE ALSO
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.Xr config 1 ,
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.Xr kgmon 8
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.Sh HISTORY
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The
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.Nm
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driver appeared in
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.Bx 4.2 .
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