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Chapter 4: BIOS
4-25
PCI Latency Timer
This option specifies the latency timing of the PCI clocks for all PCI devices.
Settings include "32", "64", "96", "128", "160", "192", "224" and "248" PCI
clocks.
Allocate IRQ to PCI VGA
This option lets you allocate an interrupt request (IRQ) to the PCI VGA
adapter card (if used). The settings are "Yes" and "No."
Palette Snooping
When enabled, this option informs PCI devices that an ISA graphics device
is installed. The settings are "Disabled" and "Enabled." 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 card manuals
first, before modifying the default settings in the BIOS.
PCI IDE BusMaster
The settings for this option are "Disabled" and "Enabled." This option is
only available on non-Microsoft Operating Systems.
OffBoard PCI/ISA IDE Card
This option specifies which PCI slot has an IDE controller card installed.
Settings are "Auto", "PCI slot 1", "PCI slot 2", "PCI slot 3", "PCI slot 4", "PCI
slot 5" and "PCI slot 6." (PCI slot numbers will be available in this option
even if your motherboard does not have that slot number. If your
motherboard does not have a PCI slot 5, for example, do not set this option
to "PCI slot5.")
OffBoard PCI Primary IRQ
This option specifies the primary IRQ for the PCI. Settings include "Dis-
abled", "INTA" (Interrupt A), "INTB", "INTC", "INTD" and "Hardwired."
Hardwired tells the BIOS that the OffBoard IDE Primary controller is a legacy
device and the interrupt request channels cannot participate in PCI
“Swizzle”. (PCI “Swizzle” is a term used to describe IRQ sharing.)