Lanner electronics IMB-X60 Series, Руководство пользователя, Страница: 50 / 52

Appendix A How to use watch-dog timer
46
User’s Manual
APPENDIX A. Watch-Dog Timer
To use the watch-dog timer:
Step 1. Enable and re-trigger the Watchdog timer: Output port 443H
Step 2. Disable : Output port 441H
EX.1: For DOS
Execute the
DEBUG.EXE file under DOS, Then key-in O443 . The system will
reboot automatically according to the time-out you set.
Enable Disable
C:\DOS> DEBUG C:\DOS> DEBUG
O 443 0~F O 441 0~F
EX.2: For assemble Language
Enable:
:
:
MOV DX, 443H
OUT DX, AL
:
:
Disable:
:
:
MOV DX, 441H
OUT DX, AL
: