BCM QS440VA User Manual download pdf (Page 45)

4. BIOS SETUP

Disabled, Enabled (Default).

4.4.16 PCI/VGA Palette Snoop

Some display cards that are not standard VGA such as graphics accelerators or MPEG

cards may not show the correct colors, the setting can correct this problem once you set

it to Enable, To default setting leave at Disabled.

4.4.17 OS select for DRAM>64MB

Select OS2 only if you are running OS/2 operating system with greater than 64MB of

RAM on your system.

4.4.18 Shadow

Software that resides in a read-only memory (ROM) chip on a device is called

firmware. The Award BIOS permits shadowing of firmware such as the system BIOS,

video BIOS, and similar operating instructions that come with some expansion

peripherals, such as, for example, a SCSI adapter.

Shadowing copy firmware from ROM into system RAM, where the CPU can read it

through the 16-bit or 32-bit DRAM bus. Firmware not shadowed must be read by the

system through the 8-bit x-bus. Shadowing improves the performance of the system

BIOS and similar ROM firmware for expansion peripherals, but it also reduces the

amount of high memory (640KB to 1 MB) available for loading device drivers, etc.

Enable shadowing into each section of memory separately. Many system designers

hardwire shadowing of the system BIOS and eliminate a System BIOS Shadow option.

Video BIOS shadows into memory area C0000-C7FFF> The remaining areas shown

on the BIOS Features Setup screen may be occupied by other expansion card firmware.

If an expansion peripheral in your system contains ROM-based firmware, you need to

know the address range the ROM occupies to shadow it into the correct area of RAM.

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BCM QS440VA User Manual Page 45