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PCI/PnP Setup
Choose the PCI/PnP Setup icon from the WINBIOS Setup screen to
display the PCI and Plug and Play Setup options, described below.
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 disabled.
For example: if there are two VGA devices in the computer one PCI and
one ISA and:
VGA Palette Snoop
Bit Setting
Disabled
Enabled
This option must be set to Enabled if any ISA adapter card installed in
the system requires VGA palette snooping. The Optimal and Fail–Safe
default settings are Disabled.
Allocate IRQ to PCI VGA
Set this option to Yes to allocate an IRQ to the PCI VGA controller. The
settings are No or Yes. The Optimal and Fail–Safe default settings are
No.
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MegaPro Dual Pentium Pro PCI ISA Motherboard User's Guide
Action
Data read and written by the CPU is only directed to
the PCI VGA device's palette registers.
Data read and written by the CPU is directed to the
both the PCI VGA device's palette registers and the
ISA VGA device palette registers, permitting the
palette registers of both devices to be identical.
Cont'd
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