MSI K7D MASTER User Guide - Page 70

IRQ Resources, Resources Controlled By, PCI/VGA Palette Snoop, VGA Palette Snoop, Bit Setting,

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Chapter 3 want to configure the system by yourself, select Manual. IRQ Resources This item is enabled only when Resources Controlled By is set to Manual. Press and you will enter the sub-menu of the items. IRQ Resources allows you to assign IRQ 3/4/5/7/9/10/11/12/14/15 to a type of PCI device, depending on the type of device using the IRQ. PCI/ISA PnP Legacy ISA For Plug & Play compatible devices designed for PCI or ISA bus architecture. For devices compliant with the PC AT bus specification, requiring a specific interrupt. 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 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 adapter card installed in the system requires VGA palette snooping. The Setup and BIOS default values are Disabled. 3-24

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Chapter 3
3-24
want to configure the system by yourself, select
Manual
.
IRQ Resources
This item is enabled only when
Resources Controlled By
is set to
Manual
.
Press <Enter> and you will enter the sub-menu of the items.
IRQ Resources
allows you to assign IRQ 3/4/5/7/9/10/11/12/14/15 to a type of PCI device,
depending on the type of device using the IRQ.
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:
The setting must be set to
Enabled
if any ISA adapter card installed in the
system requires VGA palette snooping. The Setup and BIOS default values are
Disabled
.
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.
PCI/ISA PnP
For Plug & Play compatible devices designed for
PCI or ISA bus architecture.
Legacy ISA
For devices compliant with the PC AT bus
specification, requiring a specific interrupt.