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Annotation of Net2/arch/i386/isa/rtc.h, revision 1.1.1.2

1.1       root        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:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. All advertising materials mentioning features or use of this software
                     17:  *    must display the following acknowledgement:
                     18:  *     This product includes software developed by the University of
                     19:  *     California, Berkeley and its contributors.
                     20:  * 4. Neither the name of the University nor the names of its contributors
                     21:  *    may be used to endorse or promote products derived from this software
                     22:  *    without specific prior written permission.
                     23:  *
                     24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     34:  * SUCH DAMAGE.
                     35:  *
                     36:  *     @(#)rtc.h       7.1 (Berkeley) 5/12/91
                     37:  */
                     38: 
                     39: /*
                     40:  * RTC Register locations
                     41:  */
                     42: 
                     43: #define RTC_SEC                0x00    /* seconds */
                     44: #define RTC_SECALRM    0x01    /* seconds alarm */
                     45: #define RTC_MIN                0x02    /* minutes */
                     46: #define RTC_MINALRM    0x03    /* minutes alarm */
                     47: #define RTC_HRS                0x04    /* hours */
                     48: #define RTC_HRSALRM    0x05    /* hours alarm */
                     49: #define RTC_WDAY       0x06    /* week day */
                     50: #define RTC_DAY                0x07    /* day of month */
                     51: #define RTC_MONTH      0x08    /* month of year */
                     52: #define RTC_YEAR       0x09    /* month of year */
                     53: #define RTC_STATUSA    0x0a    /* status register A */
                     54: #define  RTCSA_TUP      0x80   /* time update, don't look now */
                     55: 
                     56: #define RTC_STATUSB    0x0b    /* status register B */
                     57: 
                     58: #define RTC_INTR       0x0c    /* status register C (R) interrupt source */
                     59: #define  RTCIR_UPDATE   0x10   /* update intr */
                     60: #define  RTCIR_ALARM    0x20   /* alarm intr */
                     61: #define  RTCIR_PERIOD   0x40   /* periodic intr */
                     62: #define  RTCIR_INT      0x80   /* interrupt output signal */
                     63: 
                     64: #define RTC_STATUSD    0x0d    /* status register D (R) Lost Power */
                     65: #define  RTCSD_PWR      0x80   /* clock lost power */
                     66: 
                     67: #define RTC_DIAG       0x0e    /* status register E - bios diagnostic */
                     68: #define RTCDG_BITS     "\020\010clock_battery\007ROM_cksum\006config_unit\005memory_size\004fixed_disk\003invalid_time"
                     69: 
                     70: #define RTC_RESET      0x0f    /* status register F - reset code byte */
                     71: #define         RTCRS_RST       0x00           /* normal reset */
                     72: #define         RTCRS_LOAD      0x04           /* load system */
                     73: 
1.1.1.2 ! root       74: #define RTC_FDISKETTE  0x10    /* diskette drive type in upper/lower nibble */
        !            75: #define         RTCFDT_NONE     0              /* none present */
        !            76: #define         RTCFDT_360K     0x10           /* 360K */
        !            77: #define         RTCFDT_12M      0x20           /* 1.2M */
        !            78: #define         RTCFDT_144M     0x40           /* 1.44M */
        !            79: 
1.1       root       80: #define RTC_BASELO     0x15    /* low byte of basemem size */
                     81: #define RTC_BASEHI     0x16    /* high byte of basemem size */
                     82: #define RTC_EXTLO      0x17    /* low byte of extended mem size */
                     83: #define RTC_EXTHI      0x18    /* low byte of extended mem size */
                     84: 
                     85: #define RTC_CENTURY    0x32    /* current century - please increment in Dec99*/

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