User manual
ARK-3389 User Manual 38
4.2.7 PnP/PCI Configurations
Note: This “PnP/PCI Configurations” screen is for setting up the IRQ 
and DMA (both PnP and PCI) bus assignments.
• Reset Configuration Data [Disabled]
This item allows the user to clear any PnP configuration data stored in 
the BIOS.
• Resources Controlled By [Auto (ESCD)]
- IRQ Resources
This item allows the user to assign interrupt types to IRQ-3, 4, 5, 7, 9, 
10, 11, 12, 14, and 15, respectively.
- PCI / VGA Palette Snoop [Disabled]
The item is designed to solve problems caused by some non-standard 
VGA cards. A built-in VGA system does not need this function.
4.2.8 Frequency/Voltage Control
Note: This “Frequency/Voltage Control” option controls the CPU Host 
and PCI frequency, this page is CPU and Chipset dependent; some items 
will show up when a processor which supports those items is installed.
• Auto Detect PCI Clk  [Enabled]
This item enables or disables automatic PCI clock detection.
• Spread Spectrum  [Disabled]
This item enables or disables spread spectrum modulation.
• CPU Host/3V66/PCI Clock [Default]
This item enables users to set the CPU Host, AGP and PCI clock, either 
by automatic detection or manually.










