1.\" $NetBSD: rtc.4,v 1.5 2002/02/13 08:17:55 ross Exp $ 2.\" 3.\" Copyright (c) 1998 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Julian Coleman. 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 November 21, 1999 38.Dt RTC 4 atari 39.Sh NAME 40.Nm rtc 41.Nd Atari Real Time Clock 42.Sh SYNOPSIS 43.Cd "clock0 at mainbus0" 44.Sh DESCRIPTION 45The 46.Nm 47driver supports reading from and writing to the Atari real time clock (RTC). 48When reading from the RTC, the format string of the output, as described in 49the 50.Xr strftime 3 51manual page, is: 52.Bd -literal -offset indent 53``%Y%m%d%H%M.%S'' 54.Ed 55.Pp 56The same format is used to set the RTC to the current date. Note that the 57kernel expects the RTC to run in UTC. 58.Sh FILES 59.Bl -tag -width "xxxxxxxxxx" -compact 60.It Pa /dev/rtc 61.El 62.Sh EXAMPLES 63date -u +%Y%m%d%H%M.%S \*[Gt] /dev/rtc 64.Sh SEE ALSO 65.Xr date 1 , 66.Xr strftime 3 67