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Chapter 7: AMIBIOS
7-25
BIOS
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 neces-
sarily 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 Disabled,
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.)
USB Function
The settings for this option are Disabled and Enabled. Disabled prevents
the use of the USB ports and Enabled allows the use of the USB ports.