eBOX560-500-FL Series U
ser’s Manual
52
Watchdog Timer
;Enable WDT:
mov
dx,2Eh
mov
al,87
;Un-lock super I/O
out
dx,al
out
dx,al
;Select Logic device:
mov
dx,2Eh
mov
al,07h
out
dx,al
mov
dx,2Fh
mov
al,08h
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,0F5h
out
dx,al
mov
dx,2Fh
mov
al,Nh
;N=00h or 08h(see below
Note
)
out
dx,al
;Set base timer :
mov
dx,2Eh
mov
al,0F6h
out
dx,al
mov
dx,2Fh
mov
al,Mh
;M=00h,01h,...FFh (hex),Value=0 to 255
