Advantech PCA-6186 用户手册

;-----------------------------------------------------------
Dec dx                ; Enable the function of watchdog timer
Mov al,30h
Out dx,al
Inc

dx

Mov al,01h
Out dx,al            
;-----------------------------------------------------------
Dec dx                ; Set minute as counting unit 
Mov al,0f5h
Out dx,al
Inc

dx

In

al,dx

Or  al,08h
Out dx,al            
;-----------------------------------------------------------
Dec dx                ; Set timeout interval as 5 minutes and start counting
Mov al,0f6h
Out dx,al
Inc

dx

Mov al,5
Out dx,al            
;-----------------------------------------------------------
Dec dx                ; lock W83627HF 
Mov al,0aah
Out dx,al
3.

Enable watchdog timer to be reset by mouse

;-----------------------------------------------------------
Mov dx,2eh            ; unlock W83627H
Mov al,87h
Out dx,al