BIOS SETUP
28
•
CPU Internal Cache/External Cache
Cache memory is additional memory that is much faster than conventional DRAM (system
memory). CPUs from 486-type and up contain internal cache memory. Most, but not all,
modern PCs have additional (external) cache memory. When the CPU requests data, the
system transfers the requested data from the main DRAM into cache memory for even
faster access by the CPU. The “External Cache” field may not appear if your system does
not have external cache memory.
•
CPU L2 Cache ECC Checking
Select “Enabled” to ensure that the data are accurate.
•
Processor Number Feature
This function was designed with the internet in mind. Select “ Enable” to make the
processor serial number serve as a means of identifying your system.
•
Quick Power On Self Test
Select “Enabled” to reduce the amount of time required to run the POST. The Quick
POST skips certain steps. We recommend that you normally disable Quick POST. It’s
better to find a problem during POST than to lose data during your work.
•
First/Second/Third Boot Device; Boot Other Device
The original IBM PCs loaded the DOS operating system from drive A (floppy disk).
Therefore, IBM PC-compatible systems are designed to search for an operating system
first on drive A, and then on drive C (hard disk). However, the BIOS attempts to load the
operating system from the devices in the sequence selected in these fields. In addition to
the traditional drives A (“Floppy”) and C (“HDD-0”), options include “HDD-1”, “HDD-2”,
“HDD-3”, and “CD-ROM”; plus a “SCSI” hard drive, a “LS120” drive, a “ZIP100” drive
and a “LAN” drive. If your boot device is not included in the list, you can set the “Boot
Other Device” field to “Enabled”, and let the system detect the drive automatically.
•
Swap Floppy Drive
This field is effective only in systems with two floppy drives. Selecting “Enabled” assigns
physical drive B to logical drive A, and physical drive A to logical drive B.
