Advantech user manual PCA-6186 User’s Manual 100

Out dx,al
;-----------------------------------------------------------
Mov al,07h		; Select registers of watchdog timer
Out	dx,al
Inc	dx
Mov	al,08h
Out	dx,al
;-----------------------------------------------------------
Dec dx		; Enable the function of watchdog timer
Mov	al,30h
Out	dx,al
Inc	dx
Mov	al,01h
Out	dx,al
;-----------------------------------------------------------
Dec dx		; Enable watchdog timer to be reset by mouse
Mov	al,0f7h
Out	dx,al
Inc	dx
In	al,dx
Or al,80h
Out	dx,al
;-----------------------------------------------------------
Dec dx		; lock W83627HF
Mov	al,0aah
Out	dx,al

4.Enable watchdog timer to be reset by keyboard ;-----------------------------------------------------------

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

PCA-6186 User’s Manual 100