Advantech AIMB-216, Руководство пользователя

Страница: 105 / 128

93 AIMB-216 User Manual
Appendix A
P
rogramming
the
W
atchdog
Timer
Dec dx; enable the watchdog timer function
Mov al,30h
Out dx,al
Inc dx
Mov al,01h
Out dx,al
;-----------------------------------------------------------
Dec dx; enable the watchdog timer to be reset using a mouse
Mov al,0f2h
Out dx,al
Inc dx
In al,dx
Or al,80h
Out dx,al
;-----------------------------------------------------------
Dec dx; lock NCT6106D
Mov al,0aah
Out dx,al
4. Enable the watchdog timer to be reset using a keyboard
;-----------------------------------------------------------
Mov dx,2eh; unlock NCT6106D
Mov al,87h
Out dx,al
Out dx,al
;-----------------------------------------------------------
Mov al,07h; select the watchdog timer registers
Out dx,al
Inc dx
Mov al,08h
Out dx,al
;-----------------------------------------------------------
Dec dx; enable the watchdog timer function
Mov al,30h
Out dx,al
Inc dx
Mov al,01h
Out dx,al
;-----------------------------------------------------------
Dec dx; enable the watchdog timer to be strobed reset using a keyboard
Mov al,0f2h
Out dx,al
Inc dx
In al,dx
Or al,40h
Out dx,al