System Installation
ROBO-8771VG2 User’s Manual
3-3
Operation of Ethernet Port
8110SC
Color
Name of LED
ON
OFF
Status LED Green
LAN Linked & Active LED
Linked
Active
(Blinking)
100 Mbps
10 Mbps
Speed LED Green
LAN speed LED
Green Off
3.4
Clear CMOS Operation
The following table indicates how to enable/disable CMOS Clear Function hardware
circuit by putting jumpers at proper position.
JP1
Function
1-2 Short
Normal Operation
Ì
2-3 Short
Clear CMOS contents
To correctly operate CMOS Clear function, users must turn off the system, move JP1
jumper to short pin 2 and 3. To clear CMOS contents, please turn the power back on
and turn it off again for AT system, or press the toggle switch a few times for ATX
system. Move the JP1 back to 1-2 position (Normal Operation) and start the system.
System will then produce a “CMOS Check Sum Error” message and hold up. Users
may then follow the displayed message to load BIOS default setting.
3.5 WDT
Function
The working algorithm of the WDT function can be simply described as a counting
process. The Time-Out Interval can be set through software programming. The
availability of the time-out interval settings by software or hardware varies from
boards to boards.
ROBO-8771VG2 allows users control WDT through dynamic software
programming. The WDT starts counting when it is activated. It sends out a signal to
system reset or to non-maskable interrupt (NMI), when time-out interval ends. To
prevent the time-out interval from running out, a re-trigger signal will need to be
sent before the counting reaches its end. This action will restart the counting process.
A well-written WDT program should keep the counting process running under
normal condition. WDT should never generate a system reset or NMI signal unless
the system runs into troubles.
