64 lines
2.4 KiB
C
64 lines
2.4 KiB
C
/* $NetBSD: clockreg.h,v 1.4 1996/01/06 20:11:07 leo Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1995 Leo Weppelman.
|
|
* All rights reserved.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Leo Weppelman.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*/
|
|
|
|
#ifndef _CLOCKREG_H
|
|
#define _CLOCKREG_H
|
|
/*
|
|
* Atari TT hardware:
|
|
* Motorola MC146818A RealTimeClock
|
|
*/
|
|
|
|
#define RTC ((struct rtc *)AD_RTC)
|
|
|
|
struct rtc {
|
|
volatile u_char rtc_dat[4];
|
|
};
|
|
|
|
#define rtc_regno rtc_dat[1] /* register nr. select */
|
|
#define rtc_data rtc_dat[3] /* data register */
|
|
|
|
/*
|
|
* Pull in general mc146818 definitions
|
|
*/
|
|
#include <dev/ic/mc146818reg.h>
|
|
|
|
/*
|
|
* Some useful constants/macros
|
|
*/
|
|
#define is_leap(x) (!(x % 4) && ((x % 100) || !(x % 1000)))
|
|
#define range_test(n, l, h) ((n) < (l) || (n) > (h))
|
|
#define SECS_DAY 86400L
|
|
#define SECS_HOUR 3600L
|
|
#define GEMSTARTOFTIME ((machineid & ATARI_CLKBROKEN) ? 1970 : 1968)
|
|
#define BSDSTARTOFTIME 1970
|
|
#endif /* _CLOCKREG_H */
|