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Chapter 3 BIOS Setup Utility
Virus Warning
When enabled, this item provides protection against viruses that try to write to the boot sector and partition table of the
hard disk drive. You need to disable this item when installing an operating system. We recommend that you enable
anti-virus protection as soon as you have installed an operating system. The default setting is Disabled.
CPU Internal Cache
All processors that can be installed in this mainboard use internal level 1 (L1) cache memory to improve performance.
Leave this item at the default setting for better performance. The default setting is Enabled.
External Cache
Most processors that can be installed in this system use external level 2 (L2) cache memory to improve performance.
Leave this item at the default setting for better performance. The default setting is Enabled.
CPU L2 Cache ECC Checking
This item enables or disables ECC (Error Correction Code) error checking on the CPU cache memory. We recommend
that you leave this item at the default setting. The default setting is Enabled.
Processor Number Feature
Some new processors are installed with a unique processor number. This number may be used for verification in Inter-
net transactions and e-commerce. If you prefer not to use or distribute the unique processor number, disable this item
to suppress the processor number. The default setting is Enabled.
Quick Power On Self Test
Enable this item to shorten the power on testing (POST) and have the system start up faster. You can enable this item
after you are confident that the system hardware is operating smoothly. The default setting is Enabled.
First/Second/Third Boot Device
The BIOS loads the operating system from the disk drives in the sequence selected in these three fields. The default
setting is Floppy/CD-ROM/HDD0.
Boot Other Device
When enabled, the system searches all other possible locations for an operating system if it fails to find one in the
devices specified under the First, Second, and Third boot devices. The default setting is Enabled.
Boot Up NumLock Status
This item defines if the keyboard Num Lock key is active when the system is started. The default setting is On.
Gate A20 Option
This item defines how the system handles legacy software that was written for an earlier generation of processors.
Leave this item at the default setting. The default setting is Fast.
Typematic Rate Setting
If this item is enabled, you can use the following two items to set the typematic rate and the typematic delay settings
for the keyboard. The default setting is Disabled.
Typematic Rate (Chars/Sec)
Use this item to define how many characters per second are generated by a held-down key. The default setting is 6.
Typematic Delay (Msec)
Use this item to define how many milliseconds must elapse before a held-down key begins generating repeat charac-
ters. The default setting is 250.
Security Option
If you have installed password protection, this item defines if the password is required at system start up, or if it is only
required when a user tries to enter the Setup Utility. The default setting is Setup.
Summary of Contents for PT-5500
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