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48 Chapter 2
PnP/PCI Configuration
It configures how PnP (Plug and Play) and PCI expansion cards operate in your system. Both the ISA and PCI
buses on the main board use system IRQs (interrupt requests) and DMAs (direct memory access). You must set
up the IRQ and DMA assignments correctly through the PnP/PCI Configurations Setup Utility for the main board to
work properly. Selecting PnP/PCI Configurations on the main program screen displays the menu below.
Reset Configuration Date
If you enable this item and restart the system, any Plug and Play configuration data stored in the BIOS Setup will
be cleared from memory.
Resources Controlled By Auto
You should set this item for the default Auto (ESCD). Under this setting, the system dynamically allocates
resources to Plug and Play devices as they are required. If you can not get a legacy ISA expansion card to work
properly, you might be able to solve the problem by changing this item to Manual, and then opening up the IRQ
Resources submenu.
• IRQ Resource: In the IRQ Resource submenu, if you assign an IRQ to Legacy ISA, the Interrupt Request
Line is reserved for a legacy ISA expansion card. Press <Esc> to close the IRQ Resource submenu. In
the Memory Resources submenu, use the first item Reserved Memory Base to set the start address of the
memory you want to reserve for the ISA expansion card. Use the section item Reserve Memory Length to
set the amount of reserved memory. Press <Esc> to close the Memory Resources submenu.