& Plug

.IV

/ Play

BIOS

PCI

 

 

 

IV. BIOS SOFTWARE

PNP and PCI Setup

The “PNP and PCI Setup” option configures the PCI bus slots. All PCI bus slots on the system use INTA#, thus all installed PCI cards must be set to this value.

NOTE: SETUP Defaults are noted in parenthesis next to each function heading.

 

Details of PNP and PCI Setup

 

PNP OS Installed (No)

 

This field allows you to use a Plug-and-Play (PnP) operating system to con-

 

figure the PCI bus slots instead of using the BIOS. Thus interrupts may be

 

reassigned by the OS when Yes is selected. When a non-PnP OS is in-

 

stalled or to prevent reassigning of interrupt settings, select the default set-

 

ting of No.

 

Slot 1 IRQ to Slot 3 IRQ (Auto)

 

These fields set how IRQ use is determined for each PCI slot. The default set-

 

ting for each field is Auto, which uses auto-routing to determine IRQ use. The

 

other options are manual settings of NA, 5, 7, 9, 10, 11, 12, 14 or 15 for each slot.

 

PCI Latency Timer (32 PCI Clock)

 

The default setting of 32 PCI Clock enables maximum PCI performance for

 

this motherboard.

 

IRQ xx Used By ISA (No/ICU)

 

These fields indicate whether or not the displayed IRQ for each field is being

 

used by a legacy (non-PnP) ISA card. Two options are available: No/ICU

 

and Yes. The first option, the default value, indicates either that the dis-

 

played IRQ is not used or an ISA Configuration Utility (ICU) is being used to

 

determine if an ISA card is using that IRQ. If you install a legacy ISA card

 

that requires a unique IRQ, and you are not using an ICU, you must set the

 

field for that IRQ to Yes. For example: If you install a legacy ISA card that

 

requires IRQ 10, then set IRQ10 Used By ISA to Yes.

 

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ASUS P2B-D2 User’s Manual