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 bus adapter in the system requires VGA palette snooping.
Assign IRQ for VGA/USB
The items allow you to assign an IRQ line to the VGA card and USB device separately. Options: Enabled, Disabled.
