Appendix A How to use watch-dog timer
50
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
:
APPENDIX B. Digital I/O
Input Port: I440H
Output Port: O440H
APPENDIX C. Brightness Control
Under Command:
RUN E568LAWD.EXE
EM-568 Panel Brilight Control . For AWD BIOS.
VT686B GP04 (push up) ……. Press +
VT686B GP05 (push down) ….. Press-
Please input (+ / - /other key to exit )
Summary of Contents for EM-568 Series
Page 4: ......
Page 8: ...Chapter 1 Introduction 4 User s Manual 1 5 Board Layout...
