1.\" $OpenBSD: clock.4,v 1.9 2018/06/18 06:06:52 jmc Exp $ 2.\" 3.\" Copyright (c) 2004 Jason L. Wright (jason@thought.net) 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25.\" POSSIBILITY OF SUCH DAMAGE. 26.\" 27.Dd $Mdocdate: June 18 2018 $ 28.Dt CLOCK 4 sparc64 29.Os 30.Sh NAME 31.Nm clock , 32.Nm rtc 33.Nd real-time clock 34.Sh SYNOPSIS 35.Cd "clock* at sbus?" 36.Cd "clock* at ebus?" 37.Cd "clock0 at fhc0" 38.Cd "rtc* at ebus?" 39.Sh DESCRIPTION 40The 41.Nm 42device provides support for the real-time clocks based 43on the following chips: 44.Pp 45.Bl -bullet -offset indent -compact 46.It 47Mostek MK48T02 48.It 49Mostek MK48T08 50.It 51Mostek MK48T18 52.It 53Mostek MK48T59 54.El 55.Pp 56The 57.Nm rtc 58device provides support for the real-time clock based 59on the following chips: 60.Pp 61.Bl -bullet -offset indent -compact 62.It 63Dallas/Maxim Semiconductor DS1287 64.It 65Acer Labs M5819 66.It 67Acer Labs M5823 68.It 69Texas Instruments BQ4802 70.El 71.Sh SEE ALSO 72.Xr ebus 4 , 73.Xr fhc 4 , 74.Xr intro 4 , 75.Xr sbus 4 76