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8dfab1b8 WN |
1 | /*- |
2 | * Copyright (c) 1990 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This code is derived from software contributed to Berkeley by | |
6 | * William Jolitz. | |
7 | * | |
8 | * %sccs.include.redist.c% | |
9 | * | |
187497c9 | 10 | * @(#)rtc.h 7.1 (Berkeley) %G% |
8dfab1b8 WN |
11 | */ |
12 | ||
a1810a6d | 13 | /* |
a1810a6d BJ |
14 | * RTC Register locations |
15 | */ | |
16 | ||
17 | #define RTC_SEC 0x00 /* seconds */ | |
18 | #define RTC_SECALRM 0x01 /* seconds alarm */ | |
19 | #define RTC_MIN 0x02 /* minutes */ | |
20 | #define RTC_MINALRM 0x03 /* minutes alarm */ | |
21 | #define RTC_HRS 0x04 /* hours */ | |
22 | #define RTC_HRSALRM 0x05 /* hours alarm */ | |
23 | #define RTC_WDAY 0x06 /* week day */ | |
24 | #define RTC_DAY 0x07 /* day of month */ | |
25 | #define RTC_MONTH 0x08 /* month of year */ | |
26 | #define RTC_YEAR 0x09 /* month of year */ | |
27 | #define RTC_STATUSA 0x0a /* status register A */ | |
8dfab1b8 WN |
28 | #define RTCSA_TUP 0x80 /* time update, don't look now */ |
29 | ||
30 | #define RTC_STATUSB 0x0b /* status register B */ | |
31 | ||
32 | #define RTC_INTR 0x0c /* status register C (R) interrupt source */ | |
33 | #define RTCIR_UPDATE 0x10 /* update intr */ | |
34 | #define RTCIR_ALARM 0x20 /* alarm intr */ | |
35 | #define RTCIR_PERIOD 0x40 /* periodic intr */ | |
36 | #define RTCIR_INT 0x80 /* interrupt output signal */ | |
37 | ||
38 | #define RTC_STATUSD 0x0d /* status register D (R) Lost Power */ | |
39 | #define RTCSD_PWR 0x80 /* clock lost power */ | |
40 | ||
41 | #define RTC_DIAG 0x0e /* status register E - bios diagnostic */ | |
187497c9 | 42 | #define RTCDG_BITS "\020\010clock_battery\007ROM_cksum\006config_unit\005memory_size\004fixed_disk\003invalid_time" |
8dfab1b8 WN |
43 | |
44 | #define RTC_RESET 0x0f /* status register F - reset code byte */ | |
45 | #define RTCRS_RST 0x00 /* normal reset */ | |
46 | #define RTCRS_LOAD 0x04 /* load system */ | |
a1810a6d BJ |
47 | |
48 | #define RTC_BASELO 0x15 /* low byte of basemem size */ | |
49 | #define RTC_BASEHI 0x16 /* high byte of basemem size */ | |
50 | #define RTC_EXTLO 0x17 /* low byte of extended mem size */ | |
51 | #define RTC_EXTHI 0x18 /* low byte of extended mem size */ | |
8dfab1b8 WN |
52 | |
53 | #define RTC_CENTURY 0x32 /* current century - please increment in Dec99*/ |