System Support
4.4 Real-Time Clock and Configuration Memory
The
0Dh | Register D |
0Ch | Register C |
0Bh | Register B |
0Ah | Register A |
09h | Year |
08h | Month |
07h | Date of Month |
06h | Day of Week |
05h | Hours (Alarm) |
04h | Hours (Timer) |
03h | Minutes (Alarm) |
02h | Minutes (Timer) |
01h | Seconds (Alarm) |
00h | Seconds (Timer) |
Extended Config.
Memory Area
(128 bytes)
Standard Config.
Memory Area
(114 bytes)
RTC Area (14 bytes)
FFh
80h
7Fh
0Eh
0Dh
00h
CMOS
Figure 4 4. Configuration Memory Map
A lithium
4.4.1 Clearing CMOS
The contents of configuration memory can be cleared by the following procedure:
1.Turn off the unit.
2.Disconnect the AC power cord from the outlet and/or system unit.
3.Remove the chassis hood (cover) and insure that no LEDs on the system board are illuminated.
4.On the system board, slide the CMOS clear button (switch SW1) for at least 5 seconds.
5.Replace the chassis hood (cover).
6.Reconnect the AC power cord to the outlet and/or system unit.
7.Turn the unit on.
✎Clearing the CMOS memory has no effect on the
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