92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
/*++ BUILD Version: 0002 // Increment this if a change has global effects
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Copyright (c) 1991 Microsoft Corporation
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Module Name:
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jazzrtc.h
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Abstract:
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This module is the header file that describes hardware structure
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for the realtime clock on the Jazz R3000 and R4000 system.
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Author:
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David N. Cutler (davec) 3-May-1991
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Revision History:
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*/
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#ifndef _JAZZRTC_
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#define _JAZZRTC_
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// Define Realtime Clock register numbers.
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#define RTC_SECOND 0 // second of minute [0..59]
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#define RTC_SECOND_ALARM 1 // seconds to alarm
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#define RTC_MINUTE 2 // minute of hour [0..59]
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#define RTC_MINUTE_ALARM 3 // minutes to alarm
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#define RTC_HOUR 4 // hour of day [0..23]
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#define RTC_HOUR_ALARM 5 // hours to alarm
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#define RTC_DAY_OF_WEEK 6 // day of week [1..7]
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#define RTC_DAY_OF_MONTH 7 // day of month [1..31]
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#define RTC_MONTH 8 // month of year [1..12]
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#define RTC_YEAR 9 // year [00..99]
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#define RTC_CONTROL_REGISTERA 10 // control register A
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#define RTC_CONTROL_REGISTERB 11 // control register B
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#define RTC_CONTROL_REGISTERC 12 // control register C
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#define RTC_CONTROL_REGISTERD 13 // control register D
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#define RTC_BATTERY_BACKED_UP_RAM 14 // battery backed up RAM [0..49]
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// Define Control Register A structure.
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typedef struct _RTC_CONTROL_REGISTER_A {
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UCHAR RateSelect : 4;
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UCHAR TimebaseDivisor : 3;
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UCHAR UpdateInProgress : 1;
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} RTC_CONTROL_REGISTER_A, *PRTC_CONTROL_REGISTER_A;
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// Define Control Register B structure.
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typedef struct _RTC_CONTROL_REGISTER_B {
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UCHAR DayLightSavingsEnable : 1;
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UCHAR HoursFormat : 1;
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UCHAR DataMode : 1;
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UCHAR SquareWaveEnable : 1;
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UCHAR UpdateInterruptEnable : 1;
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UCHAR AlarmInterruptEnable : 1;
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UCHAR TimerInterruptEnable : 1;
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UCHAR SetTime : 1;
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} RTC_CONTROL_REGISTER_B, *PRTC_CONTROL_REGISTER_B;
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// Define Control Register C structure.
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typedef struct _RTC_CONTROL_REGISTER_C {
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UCHAR Fill : 4;
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UCHAR UpdateInterruptFlag : 1;
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UCHAR AlarmInterruptFlag : 1;
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UCHAR TimeInterruptFlag : 1;
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UCHAR InterruptRequest : 1;
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} RTC_CONTROL_REGISTER_C, *PRTC_CONTROL_REGISTER_C;
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// Define Control Register D structure.
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typedef struct _RTC_CONTROL_REGISTER_D {
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UCHAR Fill : 7;
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UCHAR ValidTime : 1;
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} RTC_CONTROL_REGISTER_D, *PRTC_CONTROL_REGISTER_D;
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#endif // _JAZZRTC_
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