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3-2 Advanced BIOS Features
By choosing the Advanced BIOS Features option from the CMOS Setup Utility menu
(Figure 3-1), the screen below is displayed. This sample screen contains the
manufacturer's default values for the motherboard.
Figure 3-3 Advanced BIOS Feature Screen
Virus Warni ng:
When you set as enabled, you receive a warning message if a program (specifically, a
virus) attempts to write to the boot sector or the partition table of the hard disk drive.
Many disk diagnostic programs that access the boot sector table can trigger the
virus-warning message. If you plan to run such a program, we recommend that
you first disable the virus warning.
CPU Internal/External Cache:
Cache memory is much faster than conventional DRAM system memory. These fields
allow you to enable or disable the CPUs Level 1 built-in cache and Level 2 external
cache. Both settings are left enabled to significantly increase the performance of your
computer.
CPU L2 Cache ECC Checking:
Enable this function for the CPU L2 Cache Error Checking and Correcting (ECC)
operation.
Quick Power On Self Test (POST):
Enable this function to reduce the amount of time required to run the POST (Power
On Self Test). BIOS will save time by skipping some items during POST. It is
recommended that you disable this setting. Discovering a problem during boot up is
better than loosing data during your work.
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First/Second/Third/Boot Other Device:
This option sets the sequence of drives BIOS attempts to boot from after POST
completes. BIOS will search these drives for an operating system.
Boot up Floppy Seek:
This is a set up check for floppy power-on after starting the computer system.
Boot Up NumLock Status:
This function defines the keyboard's number pad as number keys or arrow keys. If it is
set at [on] the number keys will be activated, if it is set at [off] the arrow keys will be
activated.
Keyboard Interface:
1. Typematic Rate Setting
When enabled, you can set the following two-typematic control items. When
disabled, the keyboard controller determines keystrokes arbitrarily in your system.
2. Typematic Rate (Chars/Sec)
The typematic rate sets the rate at which characters on the screen repeat when a key
is pressed and held down.
3. Typematic Delay (Msec)
The typematic delay sets how long after you press a key that a character begins
repeating.
Security Option:
The Supervisor and/or User Password functions shown in Figure 3-1 must be set to
take advantage of this function. See Section 3.11 for password setting information.
When the Security Option is set to System, a password must be entered to boot the
system or enter the BIOS setup program. When the Security Option is set to Setup, a
password is required to enter the BIOS setup program.
APIC Mode
This item can enable or disable the APIC (Advanced Programmable Interrupt
Controller). Due to compliance to PC2001 design guide, the system is able to run in
APIC mode. Enabling APIC mode will expand available IRQs resources for the
system. Available options are [Enabled] and [Disabled].
MPS Version Control For OS:
This item allows you to select which MPS (Multi-Processor Specification) version
to be used for the operating system. You need to select the MPS version which is
supported by your operating system. To find out which version to use, consult the
vendor of your operating system. Available options are [1.4] and [1.1].