Appendix A Watchdog Timer; A.1 About Watchdog Timer; A.2 How To Use Watchdog Timer - AXIOMTEK MVS100-323-FL User Manual

A.1 About Watchdog Timer

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.

A.2 How to Use Watchdog Timer

The following example enables configuration using a debug tool.
Enable WDT

Enable configuration:

Select logic device:

Set timer value:

Clear WDT status (optional)

Set base timer:
Watchdog Timer
O 2E 87 ; Un-lock super I/O
O 2E 87
Select logic register
O 2E 07 ;
Switch to WDT device
O 2F 07 ;
Select logic register
O 2E F6 ;
Timer value 0~255 (Sec/Min) (Ex: 5)
O 2F 05 ;
:
O 2E F5 ;
O 2F 40
O 2E F5
M = 28h (Minute)
O 2F M ;
M = 20h (Second)
MVS100-323-FL User's manual
Appendix A
Watchdog Timer
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