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Chapter 4
CMOS Data Backup
Because CMOS memory retention and integrity is especially critical for
normal startup, original CMOS memory values stored in the BIOS Flash
memory allow system boots to proceed normally. This is especially criti-
cal in unmanned applications where system monitoring is not convenient.
This data redundancy (backup) combined with error detecting capability
make for more stable and reliable systems.
Batteryless Bootup
Since the BIOS Flash memory does not need a battery to retain its con-
tents (unlike the CMOS's lithium memory backup), and usually has extra
capacity, CMOS memory values are stored here. So, in the event of
CMOS backup battery failure and CMOS configuration information
being erased, when the start-up routine encounters a CMOS memory
error during bootup, CMOS configuration memory is automatically trans-
ferred out of the BIOS Flash memory back into CMOS memory. Hence,
CMOS configuration information is replaced with the original memory
data and system bootup can then proceed normally. This would reset the
RTC, which is only a minor concern.
4.2 Award BIOS setup
Awardís 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 CMOS RAM, so that it retains the Setup information
when the power is turned off.
Please note that all PCI functions are not supported in this product.
4.2.1 Entering setup
Power on the computer and press <Del> immediately. This will allow you
to enter Setup.
Summary of Contents for PCM-3341 Series
Page 1: ...PCM 3341 Series STPC Atlas 133MHz CPU Module with VGA LAN SSD FDD Users Manual...
Page 4: ...PCM 3341 User s Manual iv...
Page 13: ...5 Chapter1 1 4 Board Dimensions Figure 1 1 PCM 3341 Dimensions...
Page 14: ...PCM 3341 User s Manual 6...
Page 18: ...PCM 3341 User s Manual 10 Figure 2 2 Locating connectors solder side...
Page 25: ...17 Chapter2 2 21 SIR connector CN20 PCM 3341 provides a 5 pin SIR connector...
Page 26: ...PCM 3341 User s Manual 18...
Page 32: ...PCM 3341 User s Manual 24...
Page 33: ...CHAPTER 4 Award BIOS Setup This chapter describes how to set BIOS configuration data...
Page 46: ...PCM 3341 User s Manual 38...
Page 53: ...45 Chapter5 b Click the OK button 6 a Update Device Drive Wizard b Click the Next button...
Page 54: ...PCM 3341 User s Manual 46 7 Press Finish 8 Click Yes to restart your computer...
Page 57: ...49 Chapter6 2 a Click Next and prepare to install network functions...
Page 59: ...CHAPTER 7 Keyboard and Mouse Driver for Win95 98...
Page 61: ...53 Chapter7 c Click OK 3 a Choose the Driver label b Click Update Driver...
Page 64: ...PCM 3341 User s Manual 56 9 a Choose the manufacturer s files and click OK...
Page 67: ...59 AppendixA 1070 RETURN 2000 REM Subroutine 2 takes 1 second to complete 2090 RETURN...
Page 68: ...PCM 3341User s Manual 60...
Page 74: ...PCM 3341 User s Manual 66...
Page 96: ...PCM 3341 User s Manual 88...
Page 97: ...Appendix E LCD Services This appendix contains information on LCD lighting services...