User`s manual

NA-110 Network Appliance User’s Manual
Digital I/O
43
APPENDIX A
WDT TIMER FOR SYSTEM RESET
 Watchdog Timer Setting
After the system stops working for a while, it can be auto-reset by the Watchdog Timer. The
integrated Watchdog Timer can be set up in the system reset mode by program.
The sample codes for the above features can be found in axiomtek website, and they are only for
customers’ reference as remarked.
 Using the Watchdog Function
Start

Un-Lock WDT
O 2E 87 ; Un-lock super I/O
O 2E 87 ; Un-lock super I/O

Set WDT Funtion
O 2E 2D
O 2F 20
Select Logic device
O 2E 07
O 2F 08

Activate WDT
O 2E 30
O 2F 01
Set Second or Minute
O 2E F5
O 2F N N=00 or 08(See below table)

Set base timer
O 2E F6
O 2F M=00,01,02,…FF(Hex) ,Value=0 to 255
