1.\" $NetBSD: timer.4,v 1.3 2006/02/25 22:57:09 wiz Exp $ 2.\" 3.\" Copyright (c) 2006 Stephan Meisinger 4.\" 5.\" This software was developed by the Computer Systems Engineering group 6.\" at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 7.\" contributed to Berkeley. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed by the NetBSD 20.\" Foundation, Inc. and its contributors. 21.\" 4. Neither the name of The NetBSD Foundation nor the names of its 22.\" contributors may be used to endorse or promote products derived 23.\" from this software without specific prior written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.Dd February 24, 2006 38.Dt TIMER 4 sparc 39.Os 40.Sh NAME 41.Nm timer 42.Nd Timer driver for Sun SPARC computers 43.Sh SYNOPSIS 44.Cd "timer0 at mainbus0 # sun4c" 45.Cd "timer0 at obio0 # sun4m" 46.Cd "timer0 at obio0 addr 0xef000000 # sun4/300" 47.Sh DESCRIPTION 48The 49.Nm 50device is used to generate clocks for the 51.Nx 52kernel. 53.Pp 54The hardclock is provided by the timer register and the statistics 55clock by CPU counter registers. 56.Sh SEE ALSO 57.Xr sparc/clock 4 58.Sh HISTORY 59The 60.Nm 61appeared in 62.Nx 1.0 . 63