User`s manual

3-14
MS-9625 M-ATX Workstation Board
Delay Prior to Thermal
When the CPU temperature reaches a factory preset level, a thermal monitoring
mechanism will be enabled following the appropriate timing delay specified in
this field. With the thermal monitoring enabled, clock modulation controlled by
the processor’s internal thermal sensor is also activated to keep the processor
within allowable temperature limit.
APIC Mode
This field is used to enable or disable the APIC (Advanced Programmable Inter-
rupt Controller). Due to compliance with PC2001 design guide, the system is
able to run in APIC mode. Enabling APIC mode will expand available IRQ re-
sources for the system. Settings: [Enabled], [Disabled].
MPS Version Control For OS
This field allows you to select which MPS (Multi-Processor Specification) ver-
sion to be used for the operating system. You need to select the MPS version
supported by your operating system. To find out which version to use, consult
the vendor of your operating system. Settings: [1.4], [1.1].
Boot Up NumLock Status
This setting is to set the Num Lock status when the system is powered on. Setting to
[On] will turn on the Num Lock key when the system is powered on. Setting to [Off]
will allow users to use the arrow keys on the numeric keypad. Setting options: [On],
[Off].
Chassis Intrusion Detect
The field enables or disables the feature of recording the chassis intrusion status
and issuing a warning message if the chassis is once opened. The setting of the field
will automatically return to [Enabled] later. Setting options: [Enabled], [Disabled].
Auto Detect PCI Clk
This item is used to auto detect the PCI slots. When set to [Enabled], the system will
remove (turn off) clocks from empty PCI slots to minimize the electromagnetic inter-
ference (EMI). Settings: [Enabled], [Disabled].
Spread Spectrum
When the motherboard’s clock generator pulses, the extreme values (spikes) of the
pulses creates EMI (Electromagnetic Interference). The Spread Spectrum function
reduces the EMI generated by modulating the pulses so that the spikes of the pulses
are reduced to flatter curves.
MSI Reminds You...
1.If you do not have any EMI problem, leave the setting at [Disabled]
for optimal system stability and performance. But if you are plagued
by EMI, select the value of Spread Spectrum for EMI reduction.