Acorp 4S651M Manual page 53

Chapter 2
IRQ Resources
When resources are controlled manually, assign each system
interrupt a type, depending on the type of device using the
interrupt.
PCI / VGA Palette Snoop
Choose Disabled or Enabled. Some graphic controllers which
are not VGA compatible take the output from a VGA controller
and map it to their display as a way to provideboot information
and VGA compatibility.
However, the color information coming from the VGA controller
is drawn from the palette table inside the VGA c o n t r o l l e r t o
generate the proper colors, and the graphic controller needs to
know what is in the palette of the VGA controller. To do this,
the non-VGA graphic controller watches for the write access to
the VGA palette and registers the snoop data. In PCI based
systems, the Write Access to the palette will not show up on the
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 graphi controller
can then snoop the data on the ISA bus.Unless you have the
above situation, you should disable this option.
The choices: Disabled (default); Enabled
4S651M/4S651MN BIOS Setup
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