$NetBSD: rtc.4,v 1.8 2017/07/03 21:30:58 wiz Exp $
Copyright (c) 1998 The NetBSD Foundation, Inc.
All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Julian Coleman.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
.Dd November 21, 1999 .Dt RTC 4 atari .Os .Sh NAME .Nm rtc .Nd Atari Real Time Clock .Sh SYNOPSIS .Cd "clock0 at mainbus0" .Sh DESCRIPTION The .Nm driver supports reading from and writing to the Atari real time clock (RTC). When reading from the RTC, the format string of the output, as described in the .Xr strftime 3 manual page, is: d -literal -offset indent ``%Y%m%d%H%M.%S'' .Ed
Copyright (c) 1998 The NetBSD Foundation, Inc.
All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Julian Coleman.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
.Dd November 21, 1999 .Dt RTC 4 atari .Os .Sh NAME .Nm rtc .Nd Atari Real Time Clock .Sh SYNOPSIS .Cd "clock0 at mainbus0" .Sh DESCRIPTION The .Nm driver supports reading from and writing to the Atari real time clock (RTC). When reading from the RTC, the format string of the output, as described in the .Xr strftime 3 manual page, is: d -literal -offset indent ``%Y%m%d%H%M.%S'' .Ed
p The same format is used to set the RTC to the current date. Note that the kernel expects the RTC to run in UTC. .Sh FILES l -tag -width "xxxxxxxxxx" -compact t Pa /dev/rtc .El .Sh EXAMPLES date -u +%Y%m%d%H%M.%S > /dev/rtc .Sh SEE ALSO .Xr date 1 , .Xr strftime 3
Indexes created Sat Sep 20 22:09:52 GMT 2025