AXIOMTEK OPS830 Series, Руководство пользователя

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OPS830 Series User
’
s Manual
Watch Dog Timer
56
;Set base timer :
mov
dx,2Eh
mov al,0F6h
out dx,al
mov dx,2Fh
mov al, M h ; M =00h,01h,...FFh (hex),Value=0 to 255
out dx,al ;(see below Note )
;Disable WDT:
mov
dx,2Eh
mov al,30h
out dx,al
mov dx,2Fh
mov al,00h ;Can be disabled at any time
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
I
f N =79h, the time base is set to minute.
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