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PS/2 Mouse Function Control [Auto]
The default setting [Auto] allows the system to detect a PS/2 mouse at startup. If a
mouse is detected, the BIOS assigns IRQ12 to the PS/2 mouse. Otherwise, IRQ12
can be used for expansion cards. 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]
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. The EEPROM on the memory module stores critical information about the
module, such as memory type, size, speed, voltage interface, and module banks.
Configuration options: [User Defined] [By SPD]
The SDRAM parameters (items 2~5) become configurable only when
you set the SDRAM Configuration to [User Defined].
ASUS P4SGL-MX Motherboard
2-15
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