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rtclock_var.h revision 1.1 
      1 /*	$NetBSD: rtclock_var.h,v 1.1 1996/05/05 12:17:08 oki Exp $	*/
      2 
      3 /*
      4  * Copyright 1993, 1994 Masaru Oki
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed by Masaru Oki.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #ifndef _RTCLOCKVAR_H_
     34 #define _RTCLOCKVAR_H_
     35 
     36 /*
     37  * commands written to mode, HOLD before reading the clock,
     38  * FREE after done reading.
     39  */
     40 
     41 #define RTC_HOLD_CLOCK	0
     42 #define RTC_FREE_CLOCK	8
     43 
     44 #define RTC_REG(x) (rtc_addr->bank0.x & 0x0f)
     45 #define RTC_WRITE(r,x,v) (r)->bank0.x = (v)
     46 
     47 #define FEBRUARY	2
     48 #define	STARTOFTIME	1970
     49 #define SECDAY		86400L
     50 #define SECYR		(SECDAY * 365)
     51 
     52 #define	leapyear(year)		((year) % 4 == 0)
     53 #define	range_test(n, l, h)	if ((n) < (l) || (n) > (h)) return(0)
     54 #define	days_in_year(a) 	(leapyear(a) ? 366 : 365)
     55 #define	days_in_month(a) 	(month_days[(a) - 1])
     56 
     57 #endif /* _RTCLOCKVAR_H_ */
     58