aboutsummaryrefslogtreecommitdiff
path: root/sys/i386/isa/rtc.h
diff options
context:
space:
mode:
Diffstat (limited to 'sys/i386/isa/rtc.h')
-rw-r--r--sys/i386/isa/rtc.h85
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 000000000000..2de060db24c1
--- /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*/