MSI PT880 User Guide - Page 59

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BIOS Setup VGA Palette Snoop Bit Setting Action [Disabled] Data read or written by the CPU is only directed to the PCI VGA device's palette registers. [Enabled] Data read or written by the CPU is directed to both the PCI VGA device's palette registers and the ISA VGA device's palette registers, permitting the palette registers of both VGA devices to be identical. The setting must be set to [Enabled] if any ISA bus adapter in the system requires VGA palette snooping. Primary Graphics Adapter This item specifies which VGA card is your primary graphics adapter. Settings: [PCI] and [AGP]. PCI Slot1/5 IRQ, PCI Slot2 IRQ, PCI Slot3 IRQ, PCI Slot4 IRQ These items specify the IRQ line for each PCI slot. Setting options: [3], [4], [5], [7], [9], [10], [11], [Auto]. Selecting [Auto] allows BIOS to automatically determine the IRQ line for each PCI slot. 3-19

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3-19
BIOS Setup
The setting must be set to [Enabled] if any ISA bus adapter in the system requires VGA
palette snooping.
Primary Graphics Adapter
This item specifies which VGA card is your primary graphics adapter. Settings: [PCI]
and
[AGP].
PCI Slot1/5 IRQ, PCI Slot2 IRQ, PCI Slot3 IRQ, PCI Slot4 IRQ
These items specify the IRQ line for each PCI slot. Setting options: [3], [4], [5], [7], [9],
[10], [11], [Auto]. Selecting
[Auto]
allows BIOS to automatically determine the IRQ line
for each PCI slot.
VGA Palette Snoop
Bit Setting
Action
[Disabled]
Data read or written by the CPU is only directed to the PCI
VGA device’s palette registers.
[Enabled]
Data read or written by the CPU is directed to both the PCI
VGA device’s palette registers and the ISA VGA device’s
palette registers, permitting the palette registers of both VGA
devices to be identical.