COMMELL P4LA - Manual (Page 62)

P4LA User’s Manual System Resources
I/O Port Address Map 62
Appendix E <What Dog timer Setting >
The watchdog timer makes the system auto-reset while it stops to work for a period. The
integrated watchdog timer can be setup as system reset mode by program.
Timeout Value Range
- 1 to 255
- Second or Minute
Program Sample
Watchdog timer setup as system reset with 5 second of timeout
2E, 87
2E, 87
2E, 07
2F, 08 Logical Device 8
2E, 30 Activate
2F, 01
2E, F5 Set as Second*
2F, 00
2E, F6 Set as 5
2F, 05
* Minute: bit 3 = 0; Second: bit 3 = 1
You can select Timer setting in the BIOS, after setting the time options, the system will
reset according to the period of your selection.