diff options
Diffstat (limited to 'sys/i386/isa/rtc.h')
| -rw-r--r-- | sys/i386/isa/rtc.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/sys/i386/isa/rtc.h b/sys/i386/isa/rtc.h new file mode 100644 index 0000000..2de060d --- /dev/null +++ b/sys/i386/isa/rtc.h @@ -0,0 +1,85 @@ +/*- + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * William Jolitz. + * + * 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 the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. + * + * @(#)rtc.h 7.1 (Berkeley) 5/12/91 + */ + +/* + * RTC Register locations + */ + +#define RTC_SEC 0x00 /* seconds */ +#define RTC_SECALRM 0x01 /* seconds alarm */ +#define RTC_MIN 0x02 /* minutes */ +#define RTC_MINALRM 0x03 /* minutes alarm */ +#define RTC_HRS 0x04 /* hours */ +#define RTC_HRSALRM 0x05 /* hours alarm */ +#define RTC_WDAY 0x06 /* week day */ +#define RTC_DAY 0x07 /* day of month */ +#define RTC_MONTH 0x08 /* month of year */ +#define RTC_YEAR 0x09 /* month of year */ +#define RTC_STATUSA 0x0a /* status register A */ +#define RTCSA_TUP 0x80 /* time update, don't look now */ + +#define RTC_STATUSB 0x0b /* status register B */ + +#define RTC_INTR 0x0c /* status register C (R) interrupt source */ +#define RTCIR_UPDATE 0x10 /* update intr */ +#define RTCIR_ALARM 0x20 /* alarm intr */ +#define RTCIR_PERIOD 0x40 /* periodic intr */ +#define RTCIR_INT 0x80 /* interrupt output signal */ + +#define RTC_STATUSD 0x0d /* status register D (R) Lost Power */ +#define RTCSD_PWR 0x80 /* clock lost power */ + +#define RTC_DIAG 0x0e /* status register E - bios diagnostic */ +#define RTCDG_BITS "\020\010clock_battery\007ROM_cksum\006config_unit\005memory_size\004fixed_disk\003invalid_time" + +#define RTC_RESET 0x0f /* status register F - reset code byte */ +#define RTCRS_RST 0x00 /* normal reset */ +#define RTCRS_LOAD 0x04 /* load system */ + +#define RTC_FDISKETTE 0x10 /* diskette drive type in upper/lower nibble */ +#define RTCFDT_NONE 0 /* none present */ +#define RTCFDT_360K 0x10 /* 360K */ +#define RTCFDT_12M 0x20 /* 1.2M */ +#define RTCFDT_144M 0x40 /* 1.44M */ + +#define RTC_BASELO 0x15 /* low byte of basemem size */ +#define RTC_BASEHI 0x16 /* high byte of basemem size */ +#define RTC_EXTLO 0x17 /* low byte of extended mem size */ +#define RTC_EXTHI 0x18 /* low byte of extended mem size */ + +#define RTC_CENTURY 0x32 /* current century - please increment in Dec99*/ |
