App
- 63
Appendix 2 Special Register List
APPENDICES
Number
Name
Meaning
Explanation
Set by
(When Set)
Corres-
ponding
ACPU
D9
Corresponding
CPU
SD670
Parameter
enable drive
information
Parameter enable
drive No.
• Stores information of parameter storage destination drive which is
enabled.
0: Drive 0 (Program memory)
1: Drive 1 (SRAM card)
2: Drive 2 (Flash card/ATA card)
4: Drive 4 (Standard ROM)
S (Initial)
New
QnU
SD671
Status of latch
data backup
function
Status display
Indicates the status of the latch data backup function.
• "2 Restore ready completion" is a status immediately after restoring
data.
"3 Backup execution wait" is a status after turning power supply ON from
OFF at "2 Restore ready completion".
S (Status
change)
New
QnU
SD672
Backup
information
Backup time (Year
and month)
• Stores the last 2 digits of year and month when backup is performed in
2-digit BCD code.
S (At write)
New
QnU
SD673
Backup time (Day
and hour)
• Stores the day and hour when backup is performed in 2-digit BCD code.
SD674
Backup time
(Minute and
second)
• Stores the minute and second when backup is performed in 2-digit BCD
code.
SD675
Backup time (Year
and day of week)
• Stores the first 2 digits of year and day of week when backup is
performed in BCD code.
Presence/
absence of
backup data
0
No backup data
Absent
Restoring not executed
1
Restore ready
completion
Present
Restoring executed when
turning power supply
ON from OFF the
following time
2
Restore execution
completion
Restoring not executed
3
Backup execution wait
Restoring not executed
4
Restore repeated
execution ready
completion
Restoring executed
when turning power
supply ON from OFF
Status
Restore operation at
turning power supply
ON from OFF
b15
b12
to
b11
b8
to
b7
b4
to
b3
b0
to
Example:
July, 1993
9307
H
Year
Month
b15
b12
to
b11
b8
to
b7
b4
to
b3
b0
to
Day
Hour
Example:
31st, 10 a.m.
3110
H
b15
b12
to
b11
b8
to
b7
b4
to
b3
b0
to
Example:
35 min., 48 sec.
3548
H
Second
Second
Minute
b15
b12
to
b11
b8
to
b7
b4
to
b3
b0
to
0
1
2
3
4
5
6
Example:
1993, Friday
1905
H
Higher digits of year (0 to 99)
Sunday
Saturday
Friday
Thursday
Wednesday
Tuesday
Monday
Day of the week
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