Chapter 2
BIOS Setup
2-28
Resources Controlled By
By Choosing “Auto(ESCD)” the system BIOS will detect the system resources
and automatically assign the relative IRQ and DMA channel for each peripheral.
By Choosing “Manual”, the user will need to assign IRQ & DMA for add-on
cards. Be sure that there are no IRQ/DMA and I/O port conflicts.
The Choices: Auto(ESCD)
(default), Manual.
IRQ Resources
When resources are controlled manually, assign each system interrupt a type,
depending on the type of device using the interrupt.
DMA Resources
When you press the “Press Enter” tag, you will be directed to a submenu that will
allow you to make configuration changes the system DMA channels. This is only
configurable when “Resources Controlled By” is set to “Manual”.
When resources are controlled manually, assign each system DMA channel a type,
depending on the type on device using the DMA channel.
PCI /VGA Palette Snoop
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 provide boot information
and VGA compatibility.
However, the color information coming from the VGA controller is drawn from
the palette table inside the VGA controller to 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 Write access to the VGA
palette and registers the snoop data. In PCI based systems, where the VGA
controller is on the PCI bus and a non-VGA graphic controller is on an ISA bus,
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 graphic controller can then snoop the data on the ISA bus. Unless
you have the above situation, you should disable this option.
Disabled
(default)
Disables the function.
Enabled
Enables the function.
