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BIOS Setup • 33
happens, you can either allow the operation to continue or stop it or use
anti-virus utility on a virus-free bootable floppy disk to reboot and investigate
your system.
Cache Control
The “CPU Internal Cache” and “External Cache” default settings are
“Enabled”. These settings enable CPU’s ‘Level 1” built-in cache and the
‘Level 2’ secondary cache. The BIOS default settings will disable the L2
cache. Leave both enabled unless you are troubleshooting a problem.
Boot Up Features
The “Quick Power On Self Test” default setting is “Enabled”. This speeds up
the Power On Self Test (POST) by skipping some items that are normally
checked during the full POST. If your system is functioning normally, you can
use this feature to speed the boot up process.
The “Boot Sequence” default setting is “C:, A:” the other option is “A:, C:”. The
setting determines where the computer looks first for an operating system,
the hard disk or the floppy drive.
The “Swap Floppy Drive” default setting is “Disabled”. When enabled, the
BIOS will swap floppy drive assignments so that Drive A will function as
Drive B: and Drive B: as Drive A: under DOS.
The “Boot Up Floppy Seek” default setting is “Disabled”. When enabled, the
BIOS will check if there is a 360KB floppy disk drive installed. Don’t change
this unless there is a 360 drive installed.
The default “Boot Up NumLock Status” setting is “On”. When the computer
boots, the numbers on the numeric keypad of an IBM-compatible extended
keyboard will be active. If you turn this off the keypad cursor controls will be
active.
“Boot Up System Speed” sets the CPU speed at boot up. The default setting
is “High”.
Gate A20 Option
This entry allows you to select how the gate A20 is handled. The gate A20 is
a device used to address memory above 1 Mbytes. Initially, the gate A20 was
handled via a pin on the keyboard. Today, while keyboards still provide this
support, it is more command, and much faster, for the system chipset to
provide support for gate A20.
Normal Keyboard
Fast Chipset