NetBSD/share/man/man4/man4.mvme68k/clock.4

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.\" $NetBSD: clock.4,v 1.2 2001/06/05 12:30:47 wiz Exp $
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.\" Copyright (c) 1999 The NetBSD Foundation, Inc.
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.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Steve C. Woodford.
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.Dd November 28, 1999
.Dt CLOCK 4 mvme68k
.Os
.Sh NAME
.Nm clock
.Nd Clock driver for Motorola MVME68K Single Board Computers
.Sh SYNOPSIS
.Cd "clock0 at pcc? ipl 5"
.Cd "clock0 at pcctwo? ipl 5"
.Sh DESCRIPTION
The
.Nm
driver uses the counter/timer facilities of the MVME147's
.Nm pcc
driver or the MVME167/MVME177's
.Nm pcctwo
driver to provide two independent hardware clocks for use by the
.Nx
kernel.
.Pp
Both clock interrupts are set to 100Hz, with one used to provide
the master kernel stats clock tick. The other is used for profiling
purposes.
.Sh SEE ALSO
.Xr intro 4 ,
.Xr pcc 4 ,
.Xr pcctwo 4