Chip Configuration - Asus P4S800-X User Manual

When you set this field to [Enabled], BIOS reserves IRQ12, whether or not a PS/2
mouse is detected at startup. Configuration options: [Enabled] [Auto]
USB Legacy Support [Auto]
This motherboard supports Universal Serial Bus (USB) devices. The default of
[Auto] allows the system to detect a USB device at startup. If detected, the USB
controller legacy mode is enabled. If not detected, the USB controller legacy mode
is disabled. When you set this field to [Disabled], the USB controller legacy mode
is disabled whether or not you are using a USB device.
Configuration options: [Disabled] [Enabled] [Auto]
OS/2 Onboard Memory > 64M [Disabled]
When using OS/2 operating systems with installed DRAM of greater than 64MB,
you need to set this option to [Enabled]. Otherwise, leave to the default setting
[Disabled]. Configuration options: [Disabled] [Enabled]
Instant Music [Disabled]
This item allows you to enable or disable the Instant Music feature. See Chapter 3
for more information using this feature. Configuration options: [Disabled] [Enabled]
The Power-Up by PS/2 keyboard feature will not function when Instant Music is
set to [Enabled] and will function only when Instant Music is set to [Disabled].
Instant Music CDROM
This item displays the detected CD-ROM installed in the system.
The Instant Music items does not appear if an optical drive is not installed in
your system.

2.4.1 Chip Configuration

SDRAM Configuration [By SPD]
This parameter allows you to set the optimal timings for items 2–5, depending on
the memory modules that you are using. The default setting is [By SPD], which
configures items 2–5 by reading the contents in the SPD (Serial Presence Detect)
device.
ASUS P4S800-X motherboard 2-15