American Megatrends AX45Q User Manual page 64

AX45Q
specifications. It allows the BIOS to configure all the devices in the system. This
is the default setting.
Yes The Yes setting allows the operating system to change the interrupt, I/O and
DMA settings. Set this option if the system is running Plug and Play aware
operating systems.
2.5.3 PCI Latency Timer
Set this value to allow the PCI Latency Timer to be adjusted. This option sets the latency of
all PCI devices on the PCI bus. The default setting is 64.
Option Description
32 This option sets the PCI latency to 32 PCI clock cycles.
64 This option sets the PCI latency to 64 PCI clock cycles. This is the default
setting.
96 This option sets the PCI latency to 96 PCI clock cycles.
128 This option sets the PCI latency to 128 PCI clock cycles.
160 This option sets the PCI latency to 160 PCI clock cycles.
192 This option sets the PCI latency to 192 PCI clock cycles.
224 This option sets the PCI latency to 224 PCI clock cycles.
248 This option sets the PCI latency to 248 PCI clock cycles.
2.5.4 Allocate IRQ to PCI VGA
Set this value to allow or restrict the system from giving the VGA adapter card an interrupt
address. The default setting is Yes.
Option Description
Yes Set this value to allow the allocation of an IRQ to a VGA adapter card that uses
the PCI local bus. This is the default setting.
No Set this value to prevent the allocation of an IRQ to a VGA adapter card that
uses the PCI local bus.
2.5.5 Palette Snooping
Set this value to allow the system to modify the Palette Snooping settings. The default
setting is Disabled.
Option Description
Disabled This is the default setting and should not be changed unless the VGA card
manufacturer requires Palette Snooping to be Enabled.
Enabled This setting informs the PCI devices that an ISA based Graphics device is
installed in the system. It does this so the ISA based Graphics card will function
correctly. This does not necessarily indicate a physical ISA adapter card. The
graphics chipset can be mounted on a PCI card. Always check with your adapter
64 AX45Q User's Manual