MSI KT4M Manual page 65

MS-6596 M-ATX Mainboard
IRQ Resources
The items are adjustable only when Resources Controlled By is set to Manual.
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
Enabled
The setting must be set to Enabled if any ISA bus adapter in the system re-
quires VGA palette snooping.
Assign IRQ For VGA/USB
These settings specify the IRQ line for specified VGA/USB device. Setting
options: Disabled, Enabled.
3-26
For Plug & Play compatible devices designed for PCI
bus architecture.
The IRQ will be reserved for further request.
Data read or written by the CPU is only directed to the PCI
VGA device's palette registers.
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.
Action