4. Enable watchdog timer to be reset by keyboard
Mov dx,2eh ; unlock W83627H
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 strobed reset by keyboard Mov al,0f7h
Out dx,al
Inc dx
In al,dx
Or al,40h
Out dx,al
6 2
