Software • BIOS options
Section 4
Software
273Automation PC 620 with 945GME N270 CPU board User's Manual V 1.10
1.4.2 PCI Configuration
Figure 121: X945 Advanced PCI Configuration
BIOS setting Meaning Setting options Effect
Plug & Play O/S BIOS is informed if Plug & Play is capable
on the operating system.
Yes The operating system handles the distribution of
resources.
No BIOS handles the distribution of resources.
PCI Latency Timer This option controls how long (in PCI
ticks) one PCI bus card can continue to
use the master after another PCI card has
requested access.
32, 64, 96, 128, 160,
192, 224, 248
Manually sets the value in PCI ticks.
Allocate IRQ to PCI
VGA
This function is used to determine if an
interrupt is assigned to the PCI VGA.
Yes Automatic assignment of an interrupt.
No No assignment of an interrupt.
Allocate IRQ
to SMBUS HC
Use this function to set whether or not the
SM (System Management) bus controller
is assigned a PCI interrupt.
Yes Automatic assignment of a PCI interrupt.
No No assignment of an interrupt.
PCI IRQ Resource
Exclusion
Configures the PCI IRQ resource settings
for ISA Legacy devices.
Enter Opens the submenu
See "PCI IRQ Resource Exclusion", on page 274
PCI Interrupt
Routing
Configures PCI interrupt routing Enter Opens the submenu
See "PCI Interrupt Routing", on page 275
Table 171: X945 Advanced PCI configuration setting options
Advanced
Advanced PCI/PnP Settings NO: lets the BIOS
configure all the
devices in the system.
PCI Latency Timer [64] YES: lets the
Allocate IRQ to PCI VGA [Yes] operating system
Allocate IRQ to SMBUS HC [Yes] configure Plug and
Play (PnP) devices not
required for boot if
your system has a Plug
and Play operating
system.
PCI IRQ Resource Exclusion
PCI Interrupt Routing
Select Screen
Select Item
+- Change Option
F1 General Help
F10 Save and Exit
ESC Exit
Plug & Play O/S [Yes]
BIOS SETUP UTILITY
v02.66 (C)Copyright 1985-2009, American Megatrends, Inc.
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