MSI MS-5153 Manual page 47

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CHAPTER 3

PCI VGA Palette Snooping

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 provide the boot information and the 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 the

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 Writes.

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)

Enabled

OS Selection for DRAM > 64MB

Allows OS2

OS/2 (default) and OS2. Set to OS/2 if using more than 64MB and running

OS/2

Report No FDD For WIN 95

When set to yes, BIOS will not report any IRQ for FDD when FDD

is disabled in Windows

testing SCT for Windows

Disables the function

Enables the function

to be used with > 64 MB of DRAM. Settings are Non-

95. This function is only used when you are

95 Logo.

3-11

AWARD

BIOS SETUP

AWARD

BIOS SETUP

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