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Manual Number: 00431-220-5
Page A-15
Chapter 5: PCI/PnP Setup
Choose PCI/Plug and Play Setup entry from the AMIBIOS HIFLEX Setup screen to display the
PCI and Plug and Play Setup options, described below.
Plug and Play-Aware OS
Set this option to YES if the operating system in this computer is aware of and follows the Plug and
Play specification. Currently, only Windows 95 is PnP-aware. The settings are YES or NO
.
The
optimal and fail-safe default settings
NO.
PCI Latency Timer (PCI Clocks)
This option specifies the latency timings (in PCI clocks) for all PCI devices on the PCI bus. The
settings are 32, 64, 96, 128, 160, 192, 224, or 248
.
The Optimal and Fail-Safe default settings are
64.
PCI VGA Palette Snoop
When this option is set to ENABLED
,
multiple VGA devices operating on different buses can
handle data from the CPU on each set of palette registers on every video device. Bit 5 of the
command register in the PCI device configuration space is the VGA Palette Snoop bit (0 is dis-
abled). For example, if there are two VGA devices in the computer (one PCI and one ISA) and the:
VGA Palette Snoop Bit Setting Action
DISABLED
Data read and written by the CPU is only directed to the
PCI VGA devices palette registers.
ENABLED
Data read and written by the CPU is directed to the both the
PCI VGA devices palette registers and the ISA VGA
device palette registers, permitting the palette registers of
both devices to be identical.
This option must be set to ENABLED if any ISA adapter card installed in the system requires VGA
palette snooping. The settings are ENABLED or DISABLED
.
The Optimal and Fail-Safe default
settings are
DISABLED.
PCI IDE Bus Master
Set this option to ENABLED to specify that the IDE controller on the PCI local bus includes a bus
mastering capability. The settings are ENABLED or DISABLED
.
The optimal and fail-safe default
settings are
DISABLED.
Offboard PCI IDE Card
This option specifies if an offboard PCI IDE controller adapter card is installed in the computer. You
must specify the PCI expansion slot on the motherboard where the offboard PCI IDE controller is
installed. If an offboard PCI IDE controller is used, the onboard IDE controller is automatically