Biostar M6VLQ Grand Manual page 65

M6VLQ Grand BIOS Setup
ISA bus if the PCI VGA controller responds to the Write.
In this case, the PCI VGA controller should not respond to the Write, it should only snoop
the data and permit the access to be forwarded to the ISA bus. The non-VGA ISA graphic
controller can then snoop the data on the ISA bus.
you should disable this option.
Disabled (default)
Enabled
Assign IRQ For USB
Lets the user choose which IRQ to assign for USB.
The Choices: Enabled (default), Disabled.
Assign IRQ For VGA
Lets the user choose which IRQ to assign for the VGA.
The Choices: Enabled (default), Disabled.
Unless you have the above situation,
Disables the function.
Enables the function.
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