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+.\"	$OpenBSD: maxrtc.4,v 1.4 2022/10/25 05:49:40 jmc Exp $
+.\"
+.\" Copyright (c) 2006 Theo de Raadt <deraadt@openbsd.org>
+.\" Copyright (c) 2016 Marcus Glocker <mglocker@openbsd.org>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd $Mdocdate: October 25 2022 $
+.Dt MAXRTC 4
+.Os
+.Sh NAME
+.Nm maxrtc
+.Nd Maxim DS1307/DS1339 real-time clock
+.Sh SYNOPSIS
+.Cd "maxrtc* at iic?"
+.Sh DESCRIPTION
+The
+.Nm
+driver supports the Maxim DS1307 and DS1339 real-time clock chips,
+which provide a low-power, full binary-coded decimal (BCD) clock/calendar.
+In addition, the DS1307 comes with 56 bytes of NV SRAM.
+.Sh SEE ALSO
+.Xr iic 4 ,
+.Xr intro 4
+.Sh HISTORY
+The
+.Nm
+driver first appeared in
+.Ox 6.0 .
+.Sh AUTHORS
+.An -nosplit
+The
+.Nm
+driver was written by
+.An Marcus Glocker Aq Mt mglocker@openbsd.org .