AXIOMTEK MVS900-511-FL Series, User Manual

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MVS900-511/512-FL
72 Watchdog Timer
Begin
Enable and Initialize
Watchdog Timer
Program
“
A
”
Disable Watchdog
Timer
Next
Next
Next
Next
Begin
Enable and Initialize
Watchdog Timer
Program
“
A
”
Reset Watchdog
Timer
Next
Next
Next
Next
A.3 Sample Program
Assembly sample code:
;Enable WDT:
mov dx,2Eh
mov al,87 ;Un-lock super I/O
out dx,al
out dx,al
;Select Logic device:
mov dx,2Eh
mov al,07h
out dx,al
mov dx,2Fh
mov al,07h
out dx,al
;Enable WDT base address:
mov dx,2Eh
mov al,30h