Norco BIS-6540HD, Руководство пользователя

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BIS-6540HD
Based on Intel Atom Processor Full HD Compact Signage Platform
64
Appendix 2：Watchdog programmer guide
watchdog reference code
（
ASM
）
:
--------------------------------------------------------------------------------------------------------------
Set the port to realize watchdog function through DEBUG order, so that it can carry out
Watchdog Timer’s various functions.
port instruction ：
2EH ： Address register
2FH
：
Data register
Example
：
Set Watchdog Timer for30 Seconds, DEBUG in DOS
：
C:\>debug
-o 2e 87
-o 2e 87 ;
Decode
-o 2e 2b
-o 2f e0 ; bit4=0, set pin as watchdog func
-o 2e 07
-o 2f 08 ;
Choose register
-o 2e 30
-o 2f 01 ;
Activation logic devices
-o 2e f5
-o 2f 00 ;
Set timer units as second / (set as min: o 2f 08)
-o 2e f6
-o 2f 1E ;
Set Timer Count to 30 sec. (Max support FF = 255, when it set as 00
Watchdog function stop
-o 2fe aa ;
locked register
-q
C:\>