Advantech AIMB-221 manual

;-----------------------------------------------------------
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
Enable watchdog timer to be reset by mouse
;-----------------------------------------------------------
Mov dx,2eh		; unlock W83627HF
Mov al,87h
Out dx,al
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
Enable watchdog timer to be reset by keyboard
;-----------------------------------------------------------
Mov dx,2eh		; unlock W83627HF

AIMB-221 User Manual 94