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Appendix A Programming the Watchdog Timer
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8
7
6
5
4
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2
1
x
The following procedure is a sample program for the watchdog
timer:
•
Type C:\DOS\Debug <ENTER>
•
To start watchdog timer and set function "Reset" type;
o 444 0 <Enter>; out 444h data 0
•
To input watchdog timers time-out interval of 3 minutes type;
o 443 83 <Enter>; o 443 0 <ENTER>; out 443h data 83
•
To input Watchdog timers time-out interval of 5 seconds type;
o 443 05 <Enter>; out 443h data 05
•
To disable the watchdog timer type;
o 80 x <Enter>; out 080h data x (x can be any Hex value)
The time interval data of the watchdog timer is shown in binary
code (8 bits).
If bit 8 is "1" = To input "minute"
If bit 8 is "0" = To input "second"
Sample 1: 3 minutes
Sample 2: 5 seconds
1
0
0
0
0
0
1
1
0
0
0
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1
Содержание PCM-5894
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