The KM266-MVB Mainboard
Page 27
CPU Internal Cache / External Cache
Cache memory is additional memory that is much faster than conventional
DRAM (system memory). CPUs from 486-type up contain internal cache
memory, and most, but not all, modern PCs have an additional (external)
cache memory. When the CPU requests data, the system transfers the
requested data from the main DRAM into cache memory, for faster access by
the CPU.
CPU L2 Cache ECC Checking
When you select Enabled, the ECC checking will ensure that the data stored on
the L2 cache is accurate.
Processor Number Feature
This feature enables your CPU's serial number to be read by an external pro-
gram.
Quick Power On Self Test
If enabled the amount of time required to run the power-on self-test (POST)
will decrease. A quick POST skips certain steps. We recommend that you dis-
able quick POST. It is better to find a problem during POST than to lose data
during your work.
First / Second / Third Boot Device
These fields allow you to decide the boot sequence of your bootable devices
such as Floppy Drive, Hard Drive, CD ROM...etc
Boot Other Device
When this field is enabled you will be able Boot your computer from a different
device, not your HDD or FDD.
Swap Floppy Drive
This field is effective only in systems with two floppy drives. When Enabled is
selected physical drive B is assigned to logical drive A, and physical drive A is
assigned to logical drive B.
Boot Up Floppy Seek
When enabled, the BIOS tests (seeks) floppy drives to determine whether they
have 40 or 80 tracks. Only 360-KB floppy drives have 40 tracks; drives with
720 KB, 1.2 MB, and 1.44 MB capacity all have 80 tracks. Very few modern
PCs have 40-track floppy drives so we therefore recommend that you set this
field to Disabled to save time.
Boot Up NumLock Status
This controls the state of the NumLock key when the system boots. This field is
toggled between On or Off. When it is on the numeric keypad generates
numbers instead of controlling the cursor operations. When it is off the
numeric keypad controls cursor operations and does not generate numbers.
Gate A20 Option
Gate A20 is a signal that gives the system access to addresses higher than
A19. If you select Fast the chipset will control this signal. If you select normal
a pin in the keyboard controller will control the signal.
Managing The PC BIOS
