diff options
| author | leo <leo@NetBSD.org> | 1995-03-26 07:12:03 +0000 |
|---|---|---|
| committer | leo <leo@NetBSD.org> | 1995-03-26 07:12:03 +0000 |
| commit | 8b0113cfceadf3ee3bc427c4680b6b46bb57ceea (patch) | |
| tree | 2a5b7db0400149a733175c4b1a56774b2d4c1eb7 /sys/arch/atari/dev/clockreg.h | |
| parent | 282052c7a8346370f47965457329f3b0b3fa01b7 (diff) | |
NetBSD/Atari, port by Leo Weppelman.
Diffstat (limited to 'sys/arch/atari/dev/clockreg.h')
| -rw-r--r-- | sys/arch/atari/dev/clockreg.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/sys/arch/atari/dev/clockreg.h b/sys/arch/atari/dev/clockreg.h new file mode 100644 index 00000000000..dc6fb1548a3 --- /dev/null +++ b/sys/arch/atari/dev/clockreg.h @@ -0,0 +1,114 @@ +/* $NetBSD: clockreg.h,v 1.1.1.1 1995/03/26 07:12:15 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 */ + +/* + * Register number definitions + */ +#define RTC_SEC 0 +#define RTC_ASEC 1 +#define RTC_MIN 2 +#define RTC_A_MIN 3 +#define RTC_HOUR 4 +#define RTC_A_HOUR 5 +#define RTC_WDAY 6 +#define RTC_DAY 7 +#define RTC_MONTH 8 +#define RTC_YEAR 9 +#define RTC_REGA 10 +#define RTC_REGB 11 +#define RTC_REGC 12 +#define RTC_REGD 13 +#define RTC_RAMBOT 14 /* Reg. offset of nv-RAM */ +#define RTC_RAMSIZ 50 /* #bytes of nv-RAM available */ + +/* + * Define fields for register A + */ +#define RTC_A_UIP 0x80 /* Update In Progress */ +#define RTC_A_DV2 0x40 /* Divider select */ +#define RTC_A_DV1 0x20 /* Divider select */ +#define RTC_A_DV0 0x10 /* Divider select */ +#define RTC_A_RS3 0x08 /* Rate Select */ +#define RTC_A_RS2 0x04 /* Rate Select */ +#define RTC_A_RS1 0x02 /* Rate Select */ +#define RTC_A_RS0 0x01 /* Rate Select */ + +/* + * Define fields for register B + */ +#define RTC_B_SET 0x80 /* SET date/time */ +#define RTC_B_PIE 0x40 /* Periodic Int. Enable */ +#define RTC_B_AIE 0x20 /* Alarm Int. Enable */ +#define RTC_B_UIE 0x10 /* Update Ended Int. Enable */ +#define RTC_B_SQWE 0x08 /* Square Wave Output Enable */ +#define RTC_B_DM 0x04 /* Binary Data mode */ +#define RTC_B_24_12 0x02 /* 24 Hour mode */ +#define RTC_B_DSE 0x01 /* DST Enable */ + +/* + * Define fields for register C + */ +#define RTC_C_IRQF 0x80 /* IRQ flag */ +#define RTC_C_PF 0x40 /* Periodic Int. flag */ +#define RTC_C_AF 0x20 /* Alarm Int. flag */ +#define RTC_C_UF 0x10 /* Update Ended Int. flag */ + +/* + * Define fields for register D + */ +#define RTC_D_VRT 0x80 /* Valid Ram and Time */ + +/* + * 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 STARTOFTIME 1970 +#endif /* _CLOCKREG_H */ |
