System Installation
RUBY-9712VG2A User’s Manual
3-7
3.4.4
On-board AC-97 Audio Device
Please find Realtek ALC880AC’97 Audio driver of RUBY-9712VG2A CD-title.
The
drivers support Windows 98SE / ME / 2000 / XP.
3.5
Clear CMOS Operation
The following table indicates how to enable/disable CMOS Clear Function hardware
circuit by putting jumpers at proper position.
Normal Clear
JP3
Function
1-2 Short
Normal Operation
★
2-3 Short
Clear CMOS contents
3.6 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.
RUBY-9712VG2A 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.
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