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ASUS A7VL-VM User’s Manual52
4. BIOS SETUP
4. BIOS SETUP
Advanced Menu
DRAM Frequency
This field determines whether the memory clock frequency is set to be in synchro-
nous or asynchronous mode with respect to the CPU Frequency. This must be set
in conjunction with CPU (external) Frequency to match the speed of your SDRAM.
When you press <Enter> on this field, the first available option in the pop-up menu
equals the CPU Frequency you select for the previous field, and the second avail-
able option is the CPU Frequency multiplied by 4/3. To maintain and ensure system
stability, DRAM Frequency is set to [100 MHz] when the BIOS setup default set-
tings are loaded/selected.
System Performance [Normal]
This field adjusts the overall system performance of data processing. The start-up
setting is [Normal]. It may be changed to [Optimal] if the user needs to increase the
efficiency of data cache processes and throughputs in the system controller. Con-
figuration options: [Normal] [Optimal]
CPU Level 1 Cache, CPU Level 2 Cache [Enabled]
These field lets you 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 [Disabled]
This function controls the ECC capability in the CPU level 2 cache. Configuration
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. Configuration 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 de-
tected, IRQ12 will be used for the PS/2 mouse. IRQ12 will be reserved for expan-
sion 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: [En-
abled] [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 on startup. If detected, the USB controller
will be enabled. If not detected, the USB controller will be disabled. When this field
is set to [Disabled], the USB controller is disabled no matter whether you are using
a USB device or not. Configuration options: [Disabled] [Enabled] [Auto]