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Watchdog Programming Guide
Watchdog Time Out Table
Timer
Value
Time Out
Time
Value
Time Out
Time
Value
Time Out
0 None
8
8sec.
.
.
1 1sec.
9
9sec.
.
.
2 2sec.
A
10sec.
.
.
3 3sec.
B
11sec.
.
.
4 4sec.
C
12sec.
.
.
5 5sec.
D
13sec.
.
.
6 6sec.
E
14sec.
.
.
7 7sec.
F
15sec. FF
255
sec.
Example :
<Enable Watchdog Timer :>
mov dx , 440h
mov al, <0~255>
out dx,al
<Disable Watchdog Timer :>
Write any Value to I/O port 443h
mov dx, 443h
mov al, <0~255>
out dx, al
