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ASUS A7A266-E User’s Manual 57
4. BIOS SETUP
4. BIOS SETUP
Advanced Menu
CPU/Memory Frequency Ratio
This field adjusts the allocation of frequency response between the CPU
and memory. At 800 MHz, the ratio is automatically set to 1:1. At 600
MHz, the ratio has three configuration options: [Auto] [1:1] [3:4]
CPU Vcore Setting
This field can enable manual Vcore settings. The default is [Auto].
Changing the setting to manual permits adjustments to the next BIOS field,
CPU Vcore. Normally, it is recommended that the default [Auto] setting
be used since increasing the voltage to the CPU can damage it.
CPU Vcore
When the CPU Vcore Setting is changed to [Manual], then it is possible to
adjust the voltage range. Configuration options: [1.600V] [1.625V]
[1.650V] [1.675V] [1.700V] [1725V] [1.750V] [1.775V] [1.800V]
CPU Level 1 Cache, CPU Level 2 Cache [Enabled]
These fields allow you to choose from the default of [Enabled] or choose
[Disabled] to turn on or off the CPU’s Level 1 and Level 2 built-in cache.
Configuration options: [Disabled] [Enabled]
CPU Level 2 Cache ECC Check [Enabled]
This function controls the ECC capability in the CPU level 2 cache. Con-
figuration options: [Disabled] [Enabled]
BIOS Update [Enabled]
This functions as an update loader integrated into the BIOS to supply the
processor with the required data. In the default position of [Enabled], the
BIOS will load the update on all processors during system bootup. Con-
figuration options: [Disabled] [Enabled]
PS/2 Mouse Function Control [Auto]
The default of [Auto] allows the system to detect a PS/2 mouse on startup.
If detected, IRQ12 will be used for the PS/2 mouse. IRQ12 will be re-
served for expansion cards only if a PS/2 mouse is not detected. [Enabled]
will always reserve IRQ12, whether on startup a PS/2 mouse is detected or
not. Configuration options: [Enabled] [Auto]
USB Legacy Support [Auto]
This motherboard supports Universal Serial Bus (USB) devices. The de-
fault of [Auto] allows the system to detect a USB device on startup. If
detected, USB controller legacy mode will be enabled. If not detected, USB
controller legacy mode will be disabled. When this field is set to [Dis-
abled], USB controller legacy mode is disabled no matter whether you are
using a USB device or not. 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 this on
[Disabled]. Configuration options: [Disabled] [Enabled]