Aaeon SBC-400 User Manual page 38

The following steps illustrate how you might program the watch-
dog timer.
1. Write to I/O port 443 (Hex) and designate a time-out interval.
This will enable the watchdog and set up its time-out interval.
2. Write to I/O port 043 (Hex) and any random value. This will in
turn disable the watchdog timer.
The watchdog timer-out interval can be set at 16 levels between 2
and 32 seconds. The following table shows the Hex values for the
appropriate time-out intervals:
Delay time
0~2
2~4
Value (Hex)
F
E
Delay time
16~18
18~20
Value (Hex)
7
6