Specifications

AMD Geode™ GeodeROM Functional Specification 97
System Time and Date
32087C
11.1.4 Function 03h - Set Real-Time Clock Time
Description:
Sets the time value stored in the system’s real-time clock, in the form of hours, minutes, and seconds.
Passed:
Returns:
None.
Related Functions:
INT 1Ah "Function 01h - Set System Time" on page 96.
11.1.5 Function 04h - Get Real-Time Clock Date Status
Description:
Returns the date that is stored in the system’s real-time clock.
Passed:
Returns:
Related Functions:
INT 1Ah "Function 02h - Get Real-Time Clock Time Status" on page 96.
INT 1Ah "Function 05h - Set Real-Time Clock Date" on page 98.
Parameter Description
AH 03h
CH The hour of the current time, in BCD, stored in the RTC
CL The minutes of the current time, in BCD, stored in the RTC
DH The seconds of the current time, in BCD, stored in the RTC
DL Set to:
00h if RTC should ignore daylight savings time
01h if RTC should adjust for daylight savings time
Parameter Description
AH 04h
Parameter Description
CH The century of the current date, in BCD, stored in the RTC
CL The year of the current date, in BCD, stored in the RTC
DH The month of the current date, in BCD, stored in the RTC
DL The day of the current date, in BCD, stored in the RTC