AXIOMTEK tBOX311-820-FL Series, User Manual

Page: 76 / 88

tBOX311-820-FL Series U
ser’s Manual
Watchdog Timer
68
;Select W DT Function:
mov dx,2Eh
mov al,2Dh
out dx,al
mov dx,2Fh
mov al,20h
out dx,al
;Activate WDT:
mov dx,2Eh
mov al,30h
out dx,al
mov dx,2Fh
mov al,01h
out dx,al
;Set Second or Minute :
mov dx,2Eh
mov al,F5h
out dx,al
mov dx,2Fh
mov al, N h ; N =00h or 08h (See below
Note)
out dx,al
;Set base timer :
mov
dx,2Eh
mov al,F6h
out dx,al
mov dx,2Fh
mov al, M h ; M =00h,01h,02h,.....FFh
(Hex),Value=0 to 255
out dx, al ; (See below Note)