#sccs	"@(#)uts/kern/sys:rtc.h	1.1"

/*	Convergent Technologies - System V - June 1983	*/
/*	real time clock	*/
 
#include <sys/types.h>

/*  */

/*	REAL TIME CLOCK TC8250P	*/

/*	WRITE MODE	*/
/*	Uses upper byte of I/O address 0x480000	*/
/*	Upper 4 bits used to control chip operation */
/*      Lower 4 bits used for internal chip addressing and I/O data */

#define RTC_WRITE_ADDR		((unsigned short *)0x480000) /* RTC write address */
#define RTCCE 			0x8000		/* real time clock chip select*/
#define RTCALE 			0x4000		/* RTC address latch enable */
#define RTCRW 			0x2000		/* RTC write enable, inverse=read enable */
#define RTCDE 			0x1000		/* RTC write data enable */
	
/*	READ MODE	*/
/*	Uses upper byte of I/O address 0xe30000 */
/*	Uses lower 4 bits only	*/

#define RTC_READ_ADDR		((unsigned short *)0xe30000) /* RTC read addr */

/* 	ADDRESS MODES 	*/

#define ONE_SEC_DIGT		0x0000		/* 1 sec digit */
#define TEN_SEC_DIGT		0x0100 		/* 10 sec digit */
#define ONE_MIN_DIGT		0x0200 		/* 1 minute digit */
#define TEN_MIN_DIGT		0x0300		/* 10 minutes digit */
#define ONE_HR_DIGT		0x0400		/* 1 hour digit */
#define TEN_HR_DIGT		0x0500		/* 10 hours digit */
#define ONE_DAY_DIGT		0x0600		/* 1 day digit */
#define TEN_DAY_DIGT		0x0700		/* 10 days digit */
#define ONE_MNTH_DIGT		0x0800		/* 1 month digit */
#define TEN_MNTH_DIGT		0x0900		/* 10 month digit */
#define ONE_YR_DIGT		0x0a00		/* 1 year digit */
#define TEN_YR_DIGT		0x0b00		/* 10 year digit */
#define WEEK_DAY		0x0c00		/* day of the week */
#define TOUT_CONTROL		0x0d00		/* Tout control */
#define PROTECT_KEY		0x0e00		/* protection key */
#define RTC_STATUS		0x0f00		/* real time clock status */

/*
 * i/o structure used in rtc read/write system calls (syslocal 10,11)
 */

struct rtc {
	char sec1,sec10;
	char min1,min10;
	char hr1,hr10;
	char day1,day10;
	char mon1,mon10;
	char yr1,yr10;
	char wkday;
};