1 /*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. 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 * 10 * @(#)rtc.h 8.1 (Berkeley) 06/11/93 11 */ 12 13 /* 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 */ 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 */ 42 #define RTCDG_BITS "\020\010clock_battery\007ROM_cksum\006config_unit\005memory_size\004fixed_disk\003invalid_time" 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 */ 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 */ 52 53 #define RTC_CENTURY 0x32 /* current century - please increment in Dec99*/ 54