EM586-83
HOW TO USE WATCH-DOG TIMER
To use the watch-dog timer :
Step 1. Enable and retrigger the Watch-Dog timer: 443H
Step 2. Disable: 43H
EX.1: For DOS
Execute the DEBUG.EXE file under DOS, Then key-in i443. The system will reboot
automatically according to the time-out you set.
For example, if you want to Set 4 seconds for the time-out, you should set JP4: 4-8 ON
and J3: 1-2 ON to enable watch-dog timer.
C:\DOS> DEBUG
-i443
EX.2: For assemble Language
Enable :
:
:
MOV DX, 443H
IN AL, DX
:
:
Disable :
:
:
IN AL, 43H
:
:
APPENDIX A
