Datasheet

4-10
X7DBU/X7DGU User's Manual
Emulated IRQ Solutions
When Enabled, Emulated IRQ Scheme allows PCI devices to run on legacy operating
systems that use the MSI mechanism to generate INTX compatible interrupts. The
options are Disabled and Enabled.
PCI-Exp. I/O Performance
Some add-on cards perform faster with the coalesce feature, which limits the
payload size to 128 Bytes; while others perform faster with a payload size of 256
Bytes which inhibits coalesce features. Please refer to your add-on card user
guide for the desired setting. The options are Payload (256 Bytes) and Coalesce
Enabled (128 Bytes).
PCI Parity Error Forwarding
The feature allows SERR and PERR errors detected in PCI slots to be sent
(forwarded) to the BIOS DMI Event Log for the user to review. The options are
Enabled and Disabled.
ROM Scan Ordering
This feature allows the user to decide which Option ROM to be activated fi rst. The
options are Onboard fi rst and Add-On fi rst.
PCI Fast Delayed Transaction
Enable this function to improve DMA data transfer rate for a PCI 32-bit multimedia
card. The options are Enable and Disabled.
Reset Confi guration Data
If set to Yes, this setting clears the Extended System Confi guration Data- (ESCD)
area. The options are Yes and No.
Frequency for PCI-X#2
This option allows the user to change the bus frequency for the devices installed
in the slot indicated. The options are Auto, PCI 33 MHz, PCI 66 MHz, PCI-X 66
MHz, PCI-X 100 MHz and PCI-X 133 MHz.
Slot1 Blue Slot PCI-Exp. x8, L2 Slot PCI-Exp. x8, R1 Slot PCI-X 133
MHz, R2 Slot PCI-Exp. x8/x4 and R3 Slot PCI-Exp. x4
Access the submenu for each of the settings above to make changes to the
following:
Option ROM Scan
When enabled, this setting will initialize the device expansion ROM. The options
are Enabled and Disabled.