AXIOMTEK OPS830 Series User Manual page 62

OPS830 Series User's Manual
;Set base timer :
mov dx,2Eh
mov al,0F6h
out dx,al
mov dx,2Fh
mov al,Mh
out dx,al
;Disable WDT:
mov dx,2Eh
mov al,30h
out dx,al
mov dx,2Fh
mov al,00h
out dx,al
Note:
If N=71h, the time base is set to second.
M = time value
00: Time-out Disable
01: Time-out occurs after 1 second
02: Time-out occurs after 2 seconds
03: Time-out occurs after 3 seconds
..
FFh: Time-out occurs after 255 seconds
f N=79h, the time base is set to minute.
I
M = time value
00: Time-out Disable
01: Time-out occurs after 1 minute
02: Time-out occurs after 2 minutes
03: Time-out occurs after 3 minutes
FFh: Time-out occurs after 255 minutes
56
;M=00h,01h,...FFh (hex),Value=0 to 255
;(see below Note)
;Can be disabled at any time
Watch Dog Timer