70 lines
3.0 KiB
C
70 lines
3.0 KiB
C
/* $NetBSD: clockreg.h,v 1.1.1.1 1995/07/25 23:12:29 chuck Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)clockreg.h 8.1 (Berkeley) 6/11/93
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*/
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/*
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* Mostek MK48T02 clock.
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*/
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struct clockreg {
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volatile u_char cl_csr; /* control register */
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volatile u_char cl_sec; /* seconds (0..59; BCD) */
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volatile u_char cl_min; /* minutes (0..59; BCD) */
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volatile u_char cl_hour; /* hour (0..23; BCD) */
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volatile u_char cl_wday; /* weekday (1..7) */
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volatile u_char cl_mday; /* day in month (1..31; BCD) */
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volatile u_char cl_month; /* month (1..12; BCD) */
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volatile u_char cl_year; /* year (0..99; BCD) */
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};
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/* bits in cl_csr */
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#define CLK_WRITE 0x80 /* want to write */
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#define CLK_READ 0x40 /* want to read (freeze clock) */
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/*
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* Sun chose the year `68' as their base count, so that
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* cl_year==0 means 1968.
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*/
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#define YEAR0 68
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