Advantech PCM-4153, User Manual

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PCM-4153 User Manual 14
3.1 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 mem-
ory (CMOS RAM) so that it retains the setup information when the power is turned
off.
3.1.1 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 oper-
ation in harsh industrial environments causes a software error, the BIOS will recheck
the data in CMOS RAM and automatically restore the original data in Flash ROM to
CMOS RAM for booting.
3.2 Entering Setup
Turn on the computer and check for the “patch code”. If there is a number assigned
to the patch code, it means that the BIOS supports your CPU.
If there is no number assigned to the patch code, please contact Advantech’s appli-
cations engineer to obtain an up-to-date patch code file. This will ensure that your
CPU’s system status is valid. After ensuring that you have a number assigned to the
patch code, press <Del> to allow you to enter the setup.
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..."mes-
sage appears again and again, please check to see if you need to
replace the battery in your system.
Figure 3.1 Award BIOS Setup initial screen