Mitsubishi Electric QS001CPU User Manual page 199

12
TROUBLESHOOTING
Number Name
SD210 Clock data
SD211 Clock data
SD212 Clock data
SD213 Clock data
SD232
ROM write
count
SD233
SD240 Base mode
Extension
SD241
stage number
Table12.22 Special register
Meaning
• The year (last two digits) and month are stored as BCD code
at SD210 as shown below:
Clock data
b15 to b12 b11 to
(year, month)
Year
• The day and hour are stored as BCD code at SD211 as shown
below:
Clock data
b15 to b12 b11 to
(day, hour)
Day
• The minutes and seconds (after the hour) are stored as BCD
code at SD212 as shown below:
Clock data b15
to b12 b11 to
(minute, second)
Minute
• Stores the year (two digits) and the day of the week in SD213
in the BCD code format as shown below.
b15 to b12 b11 to
Clock data
(later digits of
year, day of
week)
Higher digits of year (19 or 20)
ROM write
• Store the ROM write count up to now.
count up to now
0: Automatic
• Stores the base mode. (0 fixed)
mode
0: Main base • Stores the maximum number of the extension bases being
only installed. (0 fixed)
Explanation
Example:
b8 b7 to b4 b3 to b0
September, 2006
0609
H
Month
Example:
b8 b7 to b4 b3 to b0
25st, 10 a.m.
2510
H
Hour
b8 b7 b3 b0 Example:
to b4 to
35 min., 48 sec.
3548
H
Second Second
b8 b7 to b4 b3 to b0
Example:
2006, Monday
2001
H
Day of the week
0
Sunday
1 Monday
2
Tuesday
3
Wednesday
4
Thursday
5
Friday
6
Saturday
12.7 Special Register List
Set by Corresponding
(When set) CPU
S (Request)/U
QS
S (Writing to
ROM)
S (Initial)
S (Initial)
12
- 92
9
10
11
12