Advantech AIMB-556 User Manual page 115

In al,dx
Or al,08h
Out dx,al
;-----------------------------------------------------------
Dec dx
Mov al,0f6h
Out dx,al
Inc dx
Mov al,5
Out dx,al
;-----------------------------------------------------------
Dec dx
Mov al,0aah
Out dx,al
3. Enable watchdog timer to be reset by mouse
;-----------------------------------------------------------
Mov dx,2eh
Mov al,87h
Out dx,al
Out dx,al
;-----------------------------------------------------------
Mov al,07h
Out dx,al
Inc dx
Mov al,08h
Out dx,al
;-----------------------------------------------------------
Dec dx
Mov al,30h
Out dx,al
Inc dx
; Set timeout interval as 5 minutes and start counting
; lock W83627HG
; unlock W83627HG
; Select registers of watchdog timer
; Enable the function of watchdog timer
101 Appendix A