RTC & CMOS RAM Map
CODE
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
10
11
12
13
14
15
16
17
18
30
31
32
33
34-3F
40-7f
Technical Summary
®
SBC81870 Intel
Pentium
ASSIGNMENT
Seconds
Second alarm
Minutes
Minutes alarm
Hours
Hours alarm
Day of week
Day of month
Month
Year
Status register A
Status register B
Status register C
Status register D
Diagnostic status byte
Shutdown byte
Floppy Disk drive type byte
Reserve
Hard Disk type byte
Reserve
Equipment byte
Base memory low byte
Base memory high byte
Extension memory low byte
Extension memory high byte
Reserved for extension memory low
byte
Reserved for extension memory high
byte
Date Century byte
Information Flag
Reserve
Reserved for Chipset Setting Data
®
M w/ DDR/VGA/Dual LAN
93
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