Advantech PCM-4380F-M0A2E, User Manual

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PCM-4380 User Manual 26
Chapter 4 Award BIOS Setup
4.1 Introduction
Award’s BIOS ROM has a built-in setup program that allows users to
modify the basic system configuration. This type of information is stored
in battery-backed memory (CMOS RAM) so that it retains the setup
information when the power is turned off.
4.1.1 CMOS RAM Auto-backup and Restore
The CMOS RAM is powered by an onboard button cell battery. When
you finish BIOS setup, the data in CMOS RAM will be automatically
backed up to Flash ROM. If operation in harsh industrial environment
cause a soft error, BIOS will recheck the data in CMOS RAM and auto-
matically restore the original data in Flash ROM to CMOS RAM for
booting.
Note If you intend to change the CMOS setting without
restoring the previous backup, you have to click
on "DEL" within two seconds of the "CMOS
checksum error..." display screen message
appearing. Then enter the "Setup" screen to
modify the data. If the "CMOS checksum
error..."message appears again and again,
please check to see if you need to replace the
battery in your system.