MSI MS-6545 User Manual page 75

Chapter 3
Press <Enter> and you will enter the sub-menu of the items. IRQ Resources list
IRQ 3/4/5/7/9/10/11/12/14/15 for users to set each IRQ a type depending on the
type of device using the IRQ. Settings are:
PCI Device
Reserved
PCI/VGA Palette Snoop
When 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 the:
VGA Palette Snoop
Bit Setting
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.
For Plug & Play compatible devices designed for PCI
bus architecture.
The IRQ will be reserved for further request.
Action
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