Pci/Pnp Setup - American Megatrends Apollo II User Manual

PCI/PnP Setup

Plug and Play-Aware OS Set this option to Yes if the operating
PCI VGA Palette Snoop When this option is set to Enabled,
VGA Palette
Snoop Bit
Setting
Disabled
Enabled
Apollo-II PCI Pentium ISA Motherboard User's Guide
50
Choose the PCI/PnP Setup icon from the
WINBIOS Setup screen to display the PCI and
Plug and Play Setup options, described below.
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 are
No.
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:
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.
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.
Action
Cont'd