AXIOMTEK eBOX623-831-FL Series, User Manual

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eBOX623-831-FL Series U
ser’s Manual
Watchdog Timer
79
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,08h
out dx,al
;Activate WDT:
mov dx,2Eh
mov al,30h
out dx,al
mov dx,2Fh
mov al,01h
out dx,al
;Set Second or Minute :
mov dx,2Eh
mov al,0F5h
out dx,al
mov dx,2Fh
mov al,Nh ;N=00h or 08h(see below
Note)
out dx,al
;Set base timer :
mov dx,2Eh
mov al,0F6h