User manual

APC-3580 User Manual
68
specify whether system plug and play devices are configured
by the operating system or the BIOS.

No DEFAULT If the
operating system does not meet the Plug and Play
specifications, this option allows the BIOS to configure all the devices in
the system.

Yes This 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.
PCI Latency Timer [64]
Use the PCI Latency Timer option to specify the PCI latency time. The latency time is measured
in units of PCI clock cycles for the PCI device latency timer register. Configuration options are:
ٛ
32
ٛ
64 (Default)
ٛ
96
ٛ
128
ٛ
160
ٛ
192
ٛ
224
ٛ
248
Allocate IRQ to PCI VGA [Yes]
Use the Allocate IRQ to PCI VGA option to restrict the system from giving the VGA adapter card
an interrupt address.

Yes DEFAULT Assigns an IRQ to a PCI VGA card if card requests IRQ

No Does not assign IRQ to a PCI VGA card even if the card requests an
IRQ
Palette Snooping [Disabled]
Use the Palette Snooping option to enable or disable the palette snooping function.

Disabled DEFAULT Unless the VGA card manufacturer requires palette snooping to be
enabled, this option should be disabled.