| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394 |
- /* $OpenBSD: nvram.h,v 1.7 2004/06/09 10:17:10 art Exp $ */
- /* $NetBSD: nvram.h,v 1.5 1995/05/05 22:08:43 mycroft Exp $ */
- /*-
- * Copyright (c) 1990, 1993
- * 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. 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 8.1 (Berkeley) 6/11/93
- */
- /*
- * The following information is found in the non-volatile RAM in the
- * MC146818A (or DS1287A or other compatible) RTC on AT-compatible PCs.
- */
- /* NVRAM byte 0: bios diagnostic */
- #define NVRAM_DIAG (MC_NVRAM_START + 0) /* RTC offset 0xe */
- #define NVRAM_DIAG_BITS "\020\010clock_battery\007ROM_cksum\006config_unit\005memory_size\004fixed_disk\003invalid_time"
- /* NVRAM byte 1: reset code */
- #define NVRAM_RESET (MC_NVRAM_START + 1) /* RTC offset 0xf */
- #define NVRAM_RESET_RST 0x00 /* normal reset */
- #define NVRAM_RESET_LOAD 0x04 /* load system */
- #define NVRAM_RESET_JUMP 0x0a /* jump through 40:67 */
- /* NVRAM byte 2: diskette drive type in upper/lower nibble */
- #define NVRAM_DISKETTE (MC_NVRAM_START + 2) /* RTC offset 0x10 */
- #define NVRAM_DISKETTE_NONE 0 /* none present */
- #define NVRAM_DISKETTE_360K 0x10 /* 360K */
- #define NVRAM_DISKETTE_12M 0x20 /* 1.2M */
- #define NVRAM_DISKETTE_720K 0x30 /* 720K */
- #define NVRAM_DISKETTE_144M 0x40 /* 1.44M */
- #define NVRAM_DISKETTE_TYPE5 0x50 /* 2.88M, presumably */
- #define NVRAM_DISKETTE_TYPE6 0x60 /* 2.88M */
- /* NVRAM byte 6: equipment type */
- #define NVRAM_EQUIPMENT (MC_NVRAM_START + 6)
- #define NVRAM_EQUIPMENT_FLOPPY 0x01 /* floppy installed */
- #define NVRAM_EQUIPMENT_FPU 0x02 /* FPU installed */
- #define NVRAM_EQUIPMENT_KBD 0x04 /* keyboard installed */
- #define NVRAM_EQUIPMENT_DISPLAY 0x08 /* display installed */
- #define NVRAM_EQUIPMENT_EGAVGA 0x00 /* EGA or VGA */
- #define NVRAM_EQUIPMENT_COLOR40 0x10 /* 40 column color */
- #define NVRAM_EQUIPMENT_COLOR80 0x20 /* 80 column color */
- #define NVRAM_EQUIPMENT_MONO80 0x30 /* 80 column mono */
- #define NVRAM_EQUIPMENT_MONITOR 0x30 /* mask for monitor type */
- #define MVRAM_EQUIPMENT_NFDS 0xC0 /* mask for # of floppies */
- /* NVRAM bytes 7 & 8: base memory size */
- #define NVRAM_BASELO (MC_NVRAM_START + 7) /* low byte; RTC off. 0x15 */
- #define NVRAM_BASEHI (MC_NVRAM_START + 8) /* high byte; RTC off. 0x16 */
- /* NVRAM bytes 9 & 10: extended memory size */
- #define NVRAM_EXTLO (MC_NVRAM_START + 9) /* low byte; RTC off. 0x17 */
- #define NVRAM_EXTHI (MC_NVRAM_START + 10) /* high byte; RTC off. 0x18 */
- /* NVRAM bytes 34 and 35: extended memory POSTed size */
- #define NVRAM_PEXTLO (MC_NVRAM_START + 34) /* low byte; RTC off. 0x30 */
- #define NVRAM_PEXTHI (MC_NVRAM_START + 35) /* high byte; RTC off. 0x31 */
- /* NVRAM byte 36: current century. (please increment in Dec99!) */
- #define NVRAM_CENTURY (MC_NVRAM_START + 36) /* RTC offset 0x32 */
|
