What Is Post; Bios Upgrade; 4-6.1 Before Upgrade Bios; 4-6.2 Upgrade Process - SOLTEK SL-75KAV User Manual

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lected and configures your computer accordingly. If the battery charge runs

too low, the CMOS content will be lost and POST will issue a "CMOS in-

valid" or "CMOS checksum invalid" message. If this happens, you may

have to replace the battery. After the battery is replaced, the proper set-

tings will need to be stored in SETUP.

4-5 WHAT IS POST

• POST is an acronym for Power On Self Test. It's a traditional name for the

routines that the BIOS uses to test and initializes the devices on your sys-

tem when the PC is powered on. Its meanings has grown to include any-

thing the BIOS does before the operating system is started. Each of POST

routines is assigned a POST code, an unique number which is sent to I/O

port 080h before the routine is executed.

• Motherboards incorporate the system BIOS in a Flash memory component.

Flash BIOS allows user upgrades without the need to replace an EPROM

component.

• The upgrade utility fits on a floppy diskette and provides the capability to

save, verify, and update the system BIOS. The upgrade utility can be run

from a hard disk drive or a network drive, but no memory managers can be

installed during upgrades.

• It is recommended that you save a copy of the original motherboard BIOS

along with a Flash EPROM Programming utility(AWDFLASH.EXE) to a

bootable floppy disk in case you need to reinstall the BIOS later.

Note: Normally, to upgrade BIOS that is unnecessary if the system is working fine

without any problem, user should upgrade the BIOS unless you experienced

incompatible problem or need BIOS upgrade to create new features. However,

please read all information in this section before upgrading.

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