Daewoo CB61X-LX User manual

,

This mainboard requires correct configuration information; otherwise,
a malfunction may result.
Static elticity can cause serious damage to integra-
ted circuit mainboards. To avoid building up a static
electric charging on your body, be sure you discharge
any static electricity by grounding yourself before
handling the mainboards. If mainboards are handed
from one person to another, they should touch hands
first, then pass the mainboards.
Information presented in this publication has been carefully checked
for reliability; however, no responsibility is assumed for inaccuracies.
The information contained in this document is subject to change with-
out notice.
Contact your dealer for warranty details.
Trademarks
All brands and product names used in this manual may be trademarks
or registered trademarks of their respective companies.
,
ii
1. Introduction
MainboardFeatures
....................................
1-1
Sp&fic,&on
...........................................
1-2
&i&o&Layout.. ...................................
1-5
2. Installation
CheckList
.............................................
2,
InstallMainMemory.. .................................
2-1
Ho~todothecombination?........................2.2
Install c-p” ............................................ 23
First step
....................................... 2*
SecondStep
.....................................
2-4
ThirdStep ......................................
2-5
ForthStep
.......................................
2-5
Comp*ete
.......................................
2-6
CPUfrequencyandBosfrequeocy~......~...........2.7
CP”l+“. ....................................... 2-7
,nstal,C$,,es
..........................................
2.8
IDE,& FDIJ Connector.
............................
2.8
IrD),
...........................................
2.8
2%pin Front Panel Switch Connector
.................
2-8
powerS”pp,y Connector
..........................
2-9
I%/2 Keyboard&Mouse Connector
................
2-10
“SB connector.
.................................
2-10
SerialPortCOMlandCOM2~.~~~~~.~~~~.~~~~~....2-~ 0
Parallel Port Printer connector 2.11
I,,&, Ad&on Card
...................................
2.1,
OtherJumpers
........................................
2.12
iii

.
.
.
-._-..
.._-
(-Jear (-J.fos. ...................................
z-1.2
power ON Stitch
...............................
2-12
StandbySVSupplyConnector .....................Z-lZ
Summary
............................................
2-13
Jumper Settings .................................
2-13
Com&,r Table.
................................
2-13
3. Buik-in BIOS Setup Program
St&ingSET(JP
........................................ 3-2
standard CMOS setup .................................. 3-6
BIOS Featurrs setup .................................... 3-g
chipset Features setup. ................................ 3-12
power Management setup. ............................. 3-17
PNP/P(J Configuration Setup
..........................
3-21
LmdBIOSDefa,,lts
....................................
3-23
Load setup Defau,ts
...................................
3-23
Integrated Pefip,,era,s .................................
3-2
Supe*& Password
..................................
3-27
user password
........................................
3-27
~E~D*utoDetedion .............................
(3-28
HDJ) Low level fornat
.................................
$30
Quitting SJTm
.......................................
3.32
i
About this Manual
This manual is designed to offer detailed information about the CB61X-
LX mainboard. The content includes the main features of the mainbo.
ard, the installation, and the BIOS settings. There are three chapters to
offer clear and detailed information of CB61X-LX.
Chapter 1Introduction
Describes the main features and major components.
Chapter 9
Installation
Describes the installation of hardware including
jumpers, cables and connectors.
Chapter 3
BIOS setup
Describes the setup of BIOS. Briefly explain each
item and show the selection of option.
Warning Marks
In this manual , warning marki are used to stress important parts or
notices of text that require users’ attention. There are two kinds of war-
ning marks in this manual:

.._I
--.“-_1_1
Introduction
Graphic Descriptions of Jumper Settings
(0
means Pin 1 &Pin 2 are set as short
pmq
means Pin 1 &Pin 2 are set as open
z3
Warning :
If you install or ~emoue the CPU, Mmmy, particularly clear CMOS, you
must pull out AC Power Cord.
i
cl
1 Introduction
CB6lX-LX mainboard intergrates the latest advances in processor,
memory, and I/O technologies into mini ATX form factor that
combines performance, flexibility, and easy of use into’high integrated
capable of a variety of price/performance Ievels.
CB6lX-LX mainboard supports Intel Pentium II processor based on the
Intel 440LX PCI set(82443LX and 82371AB), ITE IT8679F Super I/O
Chip. Three standard 168.pin DIMM with memoly size up to 384M8
support Fast Page mode, ED0 and Synchronous DRAM memory.
The Intel 82371AB FYI/IDE XceIerator(PIIX 4) provides and integrated
Bus Master IDE controller with high performance IDE interfaces for up
to four deviCes.
CB61X-LX supports two low cost universal Serial Bus(USB) ports to fit
today and tomorrow’s requirement.
CB61X-LA’ User’s Manual I-l

Introduction
1. Processor Slot:
One Slot 1 connector supports:
* Pentium II 233/2&i/300/333 MHZ processor.
’ L132K& L2 256/512KB cache in Processor card,
2. Chipset:
* Intel 440LX PCIset(ZBGA).
- ITE ITB679F(PnP Super I/O Controller).
3. *tern BIOS:
’ Award flash BIOS.
@DMI2.0
@ PnP l.Oa (comply with Intel and Windows 95)
@ PC1 2.1
8 CD ROM boot
@ APM 1.2
@ ACPI 1.0
@ A.G.P 1.0
4. DIMM Memory Socket:
* 3 pieces of 168-pin DIMM sockets.
’ Support up to E/16/32/64/128 MB unbuffered ED0 orsynchron-
ousDRAM @DRAM) Module.
* Compliance with JEDEC specifications for 3.3V unbuffered EDO/
SDRAM Module. :
5. Expansion Slots: , i
* Three 16-bit ISA slots with 100% ISA compatible function.
cB6lXLx usersMmumll.2
-
Intmduction
* Four 32bit PC1 slots all support PC1 master.
@ PC1 specification version 2.1.
@CPU to PC1 memory write posting with 4 Word deep buffers.
@Convert Back-to-Back sequential CPU to PC1 memory writes to
PC1 Burst writes.
* One 3Zbit A.G.P slot support up to 528MB/s transfer rate
@ A.G.P specification revision 1.0
@Synchronous coupling to the host bus frequency.
6. PS/2 Keyboard and PS/2 Mouse Set:
* Provides Connectors for PS/2 Keyboard & PS/2 mouse connector
set.
7. Serial/Parallel Ports:
* One multi-mode parallel port with chip-protect circuitry supports
standard, enhanced (EPP), high speed (ECP) mode.
* Two high speed 16C550 UART compatible buffer fast serial port.
* Support IrDA/ASKIR, Fast IR Infrared Interface.
6. PCI IDE Connector:
* Build-in Intel 82371AB chip 32-bit PC1 IDE interface with 2 IDE
channels.
@ Independent Timing of up to 4 drives.
@ PI0 mode 4 for transfers up to 14MB/s.
@ Support “Ultra DMA 33” Synchronous DMA mode transfers up
to 33MB/s.
@Integrated 8x32 bit buffer for IDE PC1 Burst transfers,

i
r-l
2 Installation
This chapter provides information on how to install and configure
CB61X-LX Mainboard.
The standard packing of CB61X-LX should include:
q CB61X-LX mainboard
m 1 IDE cable
q 1 Floppy cable
a CB61X-LX User’ sManual
a Device driver diskette
CB61X-LX accepts a maximum of 384MB memory size with Fast Page
Mode or Extended Data Output (EDO) memory 01 synchronous
DRAM(SDRAM). The on-board DRAM is installed with 168-pin
DIMM. (Dual-In-line-Memory Module)
CB61X-LX also provides a DIMM plug-and-play support via Serial
PD(Presence Detect) mechanism supported via the NIX4 SMB
interface. CB61X-LX provides optional data integrity features including
EC or ECC in the memory array.
The DIMM Socket is in compliance with JEDEC specifications for 3.3V
unbuffered EDO/SDRAM Module. A DIMM connector is provided to
support up to 385MB EDO/Synchronous DRAM.
CB6IX-LXVser'sMmtU2-I

installation
How to do the Combination ?
Users can install the DIMM module on any bank according to the
memory configuration table. The possible combinations will make the
total memory size from minimum SMB to maximum 384MB.
The following table lists a number of possibleDRAM combinations
DIMM
TOTAL *
D,MM, 1 DIMM~ 1 DIMM3 1
- . . ..^ -,.a.,”
8MB
16MB
32MB
64MB
128MB
_.....
8MB
16MB
32MB
64MB
128MB
0MB DlMMl
tUIMMZ+UIMN~J
16MB The combination of
memory
size is from 8MB to maximum
32MB 384MB. All DIMM sockets
64MB
can use either SDRAM or
128MB
ED0 memory.
Table 2-i. System Memory ConfigUratiOnS
,
CB61XLX User’s Mmmal2-2
Installation
CBhlX-LX provides one slot(slot 1) for installation of Pentium II
processor card. To install Pentium II processor card, check the direction
of CPU and then put the card onto the slot 1.
mount with Baseboard:
Ensure retention module stays on
Prevent Pentium U Processor
atsink Support on baseboard:
[events heatsinkmovement.
Supports h&sink on Thermal PIate.
This graphic is only a sample. It may bi
the defferent type from Intel
Boxec
Top bar is snapped into rigid pins afte
CB61X.IX User’s Manual 2-3

installation
First Step:
pre-install 2pcs of attach mount in motherboard RM hole.
Solder Side:
RM Hole
i
Installation
Third Step:
Install Heatsink support on Baseboard. If you used Intel Boxed processor,
please skip third step, and follow Intel Boxed processor install guide to
install heatsinksupporter.
I r, I
, s..o*
I
Second Step:
place RM Over “RM attach studs” on Motherboard.
Install Pentium Ii Processor with fan or heatsink on Baseboard.
Connect CPU Fan connector to power on.

Installation
Complete:
Top bar is snapped into rigid pins after CPU(with heatsink) is inserted
into slot 1 connector. After installing step by step, the process is compl-
eted.
ii
CPU frequency and Bus frequency :
To install the CPU at its correct frequency, Please refer the following
table to set up CPU frequency.
htium nProce.swr:
Table 2-2. Pentium Series CPU Frequency and Bus Frequency
CPUFan (JP3/optional) :
When you should install the boxed processor, you can use this Header
to connect processor’s fan cableppin). If you have the passive heatsink
(without fan), this Header is not used.
lo 0 0)
Fan# WI
FM
CB61X-LXUwkManuo12-7

IDE & FDD Connector :
CB6IX-LX provides 2 PC1 IDE connectors(frimary/Secondary DE)
which supports 2 ATAPI IDE devices(for example, Hard Drive and CD-
ROM) on each connector. Use 40-pin IDE cable to connect IDE devices
and IDE connector.
CB6lX-LX provides one floppy drive connector with one 34-pin floppy
cable. It can support 2 floppy drivers with type : 36OKB/720~/1.2
MB/l.44M8/2.88MB
IrDA(JP14 & JP13) :
CB61X-LX provide two Headers which can support lrDAW’13) and
Fast lR(Jp14) module. It gives users IR wireless data exchange directly
from mobile computers, printers and I’DAs,......etc.
The RXH signal is supported Fast IR(optiona1)
Z-pin Front Panel Switch ConnectorU17) :
ln order to help quick install front panel switch, these headers are inte-
grated in 22-pin header set.
installation
Table 2-3. Front Panel Switch ConrieCtOr
Power Supply ConnectorU6) :
CB61X-LX provides ATX power supply connector.

Pin Number
DesCrk
tion 1 PinNumber .‘I .~
Description )’
pin 1
3.3v pin 11 3.3v
pin 2
3.3v pin 12 -12v
pin 3
,..,n
z-in 19
fx.lrl
..A ”
C\,
I
nin IC
I W&ON
1
p,,, -?
pin
5
pin
6
2”
GND
5v
~.. *
pin
15
pin 16
” -..
GND
GND
PS/2 Keyboard & Mouse ConnectorUS) :
~61xLX provides one Iti/2 keyboard and one I’S/2 mouse coated-
or. Follow the direction of keyboard(mouse) cable to install on keyboa-
rd(mouse) connector.
- pS/z MOUSE CONNEmOR
v pS/z KEYBOARD CONNECTOR
USB ConnectorU4) :
Universal S&al Bus (USB) is a new industry standard interface for eaSe
use of PC peripheral ex$msion.
Serial Port COMliand COMZu3 & Jl) :
Cl361X-LX provides two sets of high speed serial port. Each serial POti
is 16550 UART compatible.
CB61X.L.X User’s Mmal Z-10
Installation
Parallel Port Printer ConnectorU2) :
CB61X.L,X provides one set of high speed parallel port. The par&l port
can support bidiredion/El’P/ECl’mode.
PSI2
MOUSE USB I PARALLELPORT
-k‘-
Psi2 SERIAL
Keyboard PORT
1 PORT 2
CB61X-LX provides three ISA slots, four PC1 slots and one A.G.I’ slot.
ISA and PC1 4 slots are shared and can not be installed at the same
time.
Shared slots
Do not install at the same time.
CB61X.LX Use?sMmdZ-I1

_
-._
._-
hstallation
Clear CMOS (JPlZ)
BIOS setting values and password are stored in CMOS RAM. To clear
CMOS Data of your computer, please open the computer chassis;short
Z-3 of JP12 with shori jumper during l-2 seconds, then CMOS data will
be cleared. For normal operation, please short l-2 of JP12 and close
your computer chassis.
Power ON Switch(JP15)
‘Ihis Header is used to provide a way of the user to. turn the system on.
Connecting it to the power on push button on the front panel.
Note :
In order to prevent the system from shut down by mistake, the CB61X-
LX provides one optional item on the “Power Management Setup”
manual of the BIOS setup.
This item is called “Soft-Off by PWR-BTITV. The function is as follows:
Delay 4 set :
1. Pushing the button one time will change the system from normal
operation to suspend state. Pushing the button again will wake up
the system.
2. Pushing the power button more than 4 seconds will shut down the
system.
Instant-Off:
Pushing the power button one time will turn the system on, pushing
again will torn the system off.
Standby 5V Supply Connector (JP16)
Signal b4D 5v
Please don’t insert power switch connector in JP16
@51X-LXUw'sMmrual.2-12
Installation
lumuer Settinr! :
JP12
2-3 : Max. (Default)
Clear CMOS 1-2 : Normal Operation
2-3 : Clear CMOS
Table 2-4. Jumper Settings
Table 2-5. ConneCtOrS
CMlX-Lx User’sManual2.13

-_,. _.
--a..-~-_xx..-----L-.- -...-
i
Built-In BIOS Setup Progrmr
Built-In BIOS Setup Program
This chapter contains information about:
m How the SETUP program allows you to configure the functions and
devices of your computer
n How to configure each item on the SETUP Menus
Before the computer can operate, it must know what devices are instal-
led in it. These devices include floppy and fixed-disk drives, video, and
so forth. Taken together, the presence or absence of these devices
comprise the system configuration. Use the SETUP program to verify
or change the system configuration.
Ordinarily, there should be no need to run SETUP the time you start
your system, since your computer comes from the factory ready to use.
You must, however, run the SETUP program each time you make any
changes to your computer’s configuration, such as adding drives, and
so forth. You can also run it to verify the system configuration.
CB61X-LX User’s Manwl3-I

Built-h BIOS Setup Program
The SETUP program is permanently stored in a “Flash EEPROM” and
not contained on disk. The SETUP program can be accessed :
D When powering up the system
n When resetting the system
D When the system detects an error and prompts for the SETUP program
Accessing SETUP When Powering Up the System
TO access the SETUP program when powering up the system, turn the
computer power on. The.system BIOS will first test the system compon-
ents and then display a message similar to the following:
press <DEL> to enter setup
Before the above message disappears, press the (&I key to activate the
SETUP program.
Accessing SETUP When Resetting the System
Reset the system by either pressing the reset button or the @a@
key combination. The system will display the following message :
CB61%LXUw'sMcmU3-2
Built-In BIOS Setup Program
Press <DEL> to enter setup
Before the above message disappears, press @ key to activate the
SETUP program. You can prevent the system displaying this message
using the SETUP prompt setting, described below.
Acessing SETUP When the System Prompts for the SETUP
Program
If the system BIOS detects a software or hardware error during the self-
testing process, the system displays the following message :
Press <Fl> to continue, <DEL> to Enter SETUP
Press 13 to continue the boot sequence or @ to run SETUP
Accessing SETUP Menus
SETUP provides access to primary menus from which you modify the
system configuration. SETUP always displays the Main Menu when you
start the program. Primary menus include :
n STANDARD CMOS SETUP This option allows users to check or
modify the basic system configuration.
n BIOS FEATURES SETUP _ This option is used to set the various
system options for the users, including the virus warning, external
cache, security option, boot operations, and video BIOS shadow, etc..
I CHIPSET FEATURES SETUP - This option allows users to control
the features of chipset.
CB61X.IXUw'sManuol3-3

Built-In BIOS Setup Program
ROM PCI/ISA BIOS(CB61X-LX)
CMOS SETUP UTILITY
AWARD SOFMrARE, INC.
STANDARD CMOSSETUP
BIOS FEATURES SETUP
CHIPSET FEATURES SETUP
POWER MANAGEMENT SETUP
PNPiPCl CONFIGURAIION
LOAD BIOS DEFAULTS
LOAD SETUP DEFAULTS
ESC : Quit
F10 : Save &Exit Setup
INTEGRATED PERIPHERALS
SUPERVISOR PASSWORD
USER PASSWORD
IDE HDD AUTO DETECllON
HUD LOW LEVEL FORMAT
SAVE &EXIT SETUP
EXIT WITHOUTSAVING
T I* : Select Item
(Shift)FZ : Change Color
Time, Date, Hard Disk. Type
Figure 3 -1. SETUP Main Menu
’ ’ ’ The instructions at the bottom of the Main Menu Screen show
‘?’ the items of each option.
n POWER MANAGEMENT SETUP - This option allows users to set
the power saving status for reducing the power consumption.
H PNP/PCI CONFlGURATION SETUP -This option is used to set the
various system function and internal addresses of the PC1 devices.
Allows users to configure system IRQ and DMA to PCI/ISA PnP or
Legacy ISA.
0 LOAD BIOS DEFAULTS i Users can load the BIOS default values to
boot the system safely.
Built-h BIOS Setup Program
n LOAD SETUP DEFAULTS - This option supports the better perfor-
mance for the system. It is recommended to choose OPTIMUM %tting
for the setup.
n INTEGRATED PERIPHERALS - ‘Ihis option allows users to decide how
many kinds peripherals need to change their I/O type, mode and
used or not This options also allows user to set the various system
function and onboard PC1 IDE controller.
n SUPERVISOR PASSWORD Password is required when entering
and changing all of the SETUP option or booting your system. Users
can change the current password stored in the CMOS by accessing
this option.
n USER PASSWORD - Password is required when booting your syst-
em and entering to change only the USER PASSWORD. Users can
change the current password stored in the CMOS by accessing the
option.
n IDE HDD AUTO DETECTION -This option can automatically detecl
the hard disk drive type(s) including the number of cylinders and
heads, write precompensation time, read/write head landing zone,
and number of sectors per track
n HDD LOW LEVEL FORMAT - This provides a hard disk low level
format utility.
n SAVE & EXIT - After saving the changes what you have made in the
SETUP program, then exit and reboot the system.

Built-h BIOS Setup Program
n EXIT WITHOUT SAVING - Abandon all previous settings, then exit
and reboot the system.
After choosing an menu item from the SETUP main menu, move the
cursor by using the @I, a, @, @ Arrow keys and press @I. To
modify the setting of an option, simply press the @ or @ and the@or
B keys. Press the @J key when changing the color setting. @ for a
context sensitive help function, and the @ key when quitting SETUP.
ROM PCIiISA BIOS (CB61X-LX)
STANDARD CMOS SETUP
AWARD SOFI’WARE, INC
Data (mm.dd:yy) : Thu, Jun 12 1997
Time (hh:mm:ss) : 17 : 58 : 42
HARDDISKS TYPE SIZE CYLS HEAD PRECOMP LANDZ SECTOR MODE
Primary Master : Auto 0 0 0 00 0 Auto
Primary Slave
: Auto 0 0 0
00 0
Auto
Semndary Master: Auto 0 0 0 0 0 0 Auto
Secondary Slave : Auto 0 0 0 00 0 Auto
Drive A: 1.44M, 3.5 in.
Drive B : None Base Memory
: 6MK
Floppy 3 Mode Support : Disabled Extended Memory : 31744K
Other Memory
: 3E4K
Video : EGA/VGA
-
Halt On : All But keyboard
TOTAL Memory : 32768K
EC : Quit
T I- :S&ctltem PU/PD/+/-:Modiiy
Fl :Help
(Sh’$t)F2 : Change Color
Figure 3 -2 STANDARD CMOS Setup Menu
Built-In BIOS Setup Program
Date _ Allows manual setting of the electronic calendar on the mainboard
Time - Sets the system’s internal clock which includes hour, minutes,
and seconds.
Primary Master/Slave, Secondary Master/Slave - Specifies the physical
and electronic properties of the standard hard disk drives installed.
Relevant specifications include the type, number of cylinders (CYLS),
heads (HEAD), write pre-compensation time (PRECOMP), read/write
head landing zone (LANDZ), number of sectors per track (SECTOR),
and HDD mode (MODE). Selecting “AUTO” in the hard disk type item
avoids the necessity of loading the HDD specifications and the function
of the IDE HDD Auto Detection option in the main menu. The system
BIOS will automatically detect the hard drive installed on the system
upon bootup.
Drive A:/ B: - Specifies the capacity and format of the floppy drive
installed in your system.
Flopy 3 Mode Support-If 3 mode floppy is installed, enable this item
and make floppy diskette only compatible to the Floppy Diskette Format
of Japan Spec.:l.ZMB, 3.5inch. Otherwise, it is compatible to Floppy
Diskette Format of IBM PC.
Video -Specifies the display adapter installed.
Halt On - Enables the system to halt on several conditions/options.
The default value is set at “All, But Keyboard.”
CB61XLi User’s Manual 3-7

Built-In BIOS Setup Program
Base / Extended / Other Memory - A small section in the lower right
corner of the screen displays important information about your system
which includes the base, extended, and other memory sizes. They are
updated automatically by the SETUP program according to the status
detected by the BIOS self-test. This section of the Standard CMOS
SETUP screen is for viewing purpose only and manual modifications
are not allowed.
ROM PCI/ISA BIOS (CB61X-LX)
BIOS FEATURES SETUP
AWARD SOFTWARE, INC.
Virus Warning
: Disabled
CPU InternalCache : Enabled
External Cache : Enabled
CPU L2 Cache KC cheddng : Enabled
Quick Power On Self Test : Enabled
Boot Sequence : A,C,SCS
Swap Floppy Drive : Disabled
Boot Up Floppy Seek : Enabled
Boot Up NumLockStatus : On
Boot Up System Speed : High
GATE A20 Option
: FAST
Typematic Rate Setting : Disabled
Typrmatic Rate (Chars/Sex) : 6’
TypematicDelay (Msec) :2x?
security Option : setup
PCIIVGA Palette Snoop iDisabled
OS Select For DRAM > 64MBi Non-OS:
Repoti No FDD For WIN 95 : No
2
i
Video BIOS Shadow : Enabled
C8000.CBFFF Shadow : Disabled
CCOOO-CFFFF Shadow : Disabled
DOOOO-D3FFF Shadow : Disabled
D4M)O.D7FFF Shadow : Disabled
DBOOO-DBFFF Shadow : Disabled
DCM)O-DFFFF Shadow : Disabled
ESC : Quit
T I -+ - : Select 1ten
Fl : Help PU/I’DIt/-: Modify
F5 : Old Values (Shift)FZ : Color
F6 : Load BIOS Defaults
F7 : Load Setup Defaults
Figure 3 -3:BIOS Features Setup Menu
1
CB61X.LX Usxr’sMmmal3-8
Built-In BIOS Setup Program
Virus Warning - Allows the virus warning feature for the hard disk
boot sector to display a warning message and produce a beep sound
whenever an attempt is made to write on the hard disk’s boot sector.
The default value for this option is “Disabled.”
CPU Internal Cache - Enables the internal code/data cache of CPU
when set to “Enabled” (default).
External Cache - Enables the on-board secondary cache when set to
“Enabled” (default).
CPU L2 Cache ECC Checking _ Enables the ECC(Error Checking &
Correction) Checking of l’entium il LZ Cache when set to “Enabled”(default).
Quick Power On Self Test - Allows the power on self test to run at
either a fast or a normal speed. The available options are:
-Enabled (default) -Disabled
Boot Sequence - Selects the drive where the system would search for
the operating system to run with. The available options are:
A, C, SCSI (default) C, A, SCSI
C, CDROM, A CDROM, C, A
D, A, SCSI E, A, SCSI
F, A, SCSI SCSI, A, C
SCSI, C, A c only
LS120, c
Swap Floppy Drive - “Enabled” will effectively change the A: drive to
8: and the B: to A: drive. “Disabled” (default) sets the floppy drives in
their default states.
- Disabled(default)
- Enabled
CB61X-LX User’s Mamd3.9

Built-h BIOS Setup Program
Boot Up Floppy Seek - Check if the floppy drives installed on the
system are correct or not. This option’s operation usually occurs when
the magnetic heads of the floppy drives produce a sound during power
on self test. The available options are :
- Enabled(default) -Disabled
Boot Up NumLock Status -This allows users to determine the default
state of the numeric keypad. By default, the system boots up with
NumLock on.
-On (default) -Off
Boot Up System Speed - Sets the speed of the system during power on
self test sequence. The available options are :
-High (default) -Low
Gate A20 Option - Boots the performance of system with softwrae
using the 80286 protected mode such as OS/2 UNIX. This option deter-
mines the accessibility of the extended memory. The available options
a*e : -FAST (default)
- Normal
Typematic Rate Setting - Defines the setting of the keyboard’s
lypematic rate. The available options are :
-Disabled (default) -Enabled
Typematic Rate <Char/Set> -Specifies the key repeat rate, in seconds, of
keyboard character. The available options are :
- 6 (default) :
-8110/12/15/20/24/30
Typematic Delay <Mseo ,Select the delay;in milliseconds, before a
key repeat. The available Options are :
250 (default)
-500/750/1000
CB6lX-LX User’sManual3-IO
Built-h BIOS Setup Program
Security Option -Determines whether the password will be asked for
in every boot (System), or when entering into the SETUP program
(Setup - default). Refer to the section entitled SUPERVISOR PASSWORD
for the password setting.
PCWGA Palette Snoop -Selects “Enabled” to solve the abnormal color
in Windows while using ISA MPEG and PC1 VGA card. The available
options are:
-Disabled (default) -Enabled
OS Select For DRAM > 64MB - Selects the OS if DRAM > 64MB. The
available options are:
-Non-O% (default)
- OS2
Repolt No FDD For WIN 95 -Enables to release IRQ6 under when the
floppy drive in CMOS Setup is set to NONE, When we select “Yes”.
BIOS reports the information to Windows 95 when no floppy drive is
installed.
- No(default) _ Yes
Video BIOS Shadow - Enables the system shadowing and achieve the
best performance of the system. The available options are:
- Enabled (default) -Disabled
CSOOO-CBFFF, CCOOO-CFFFF, DOOOO-D3FFF, D4000-D7FFF, DSOOO-
DBFFF, DCOOO-DFFFF Shadow - If you have a shadowing of the BIOS
at any of the above segments, you may set the appropriate memory
cacheable function to “Enabled”. Otherwise, select “Disabled” (default\.
-
CBblX-L.XUser’sMmwal3.11

“I_L_
.._.
-..----...~
Built-In BIOS Setup Program
ROM PCI/ISA BIOS (CB61X-LX)
CHIPSET FEATURES SETUP
AWARD SOFTWARE, INC.
Auto Configuration : Enabled
DRAM Speed Selection : 6om
MA wait State : Slow
ED0 RAS# To CA% Delay
: 3
ED0 RAS# Precharge Time : 3
EL?0 DRAM Read Burst :x333
EDODRAM WriteBurst : x222
DRAM ECC/PARlTY Select : Disable<
CPU-To-PC1 IDE Posting : Enabled
DRAM Read Around Write : Enabled
Burst Write Combining : Enabled
PCI-TeDRAM Pipeline
: Enabled
System BIOS Cacheable
: Enabled
Video BIOS Cacheable
: Enablec
8 Bit I/O Recovery Time :I
16 Bit l/O Recovery Time
: 1
Memory Hole At 15M-16M : Disable
Passive Release : Disable
Delayed Transaction : Disable
I
I
I
I
I _
II
d
d
d
AGP Aperture %&MB)
: 256
SDRAM RAS-to-CAS Delay : Slow
SDRAMRAS PrechargeTime: Slow
SDRAM CAS latency Time : 3
CPU Warning Temperature : Enabled
Current CPU Temperature : 27C/8O”I
ESC : Quit
1 1 -+ - : Select 1telr
Fl : Help PU/PD/c/-:Modify
F5 : Old Values
(Shift)F2 : Color
F6 : Load BIOS Defaults
F7 : Load Setup Defaults
Figure 3 -4 Chipset Features Setup Menu
Auto Configuration -Loads the default values, if “Enabled” (default),
for the following DRAM and cache options. Otherwise, “Disabled”
allows you to program each option as required.
-Enabled (default) -Disabled
ii
,
CB61X.L.X User’s Manual3-12
Built-h BIOS Setup Program
, , , The following items are controlled by Auto Configuration
T;
when users select “Enabled”. For this reason, their default
values will be changed by the speed of CPU. These items are.
“DRAM Speed Selection”, “MA Wait State”, “ED0 RAS# To CA%
Delay”, “ED0 RAS# Precharge Time”, “ED0 DRAM Read Bunt” and
“ED0 DRAM Write Burst”.
DRAM Speed Selection - Configures the DRAM read/write speed for
the maximum performance. The available options are :
-5Gns
- 60ns(default)
MA Wait State - select FAST or SLOW Memory Address bus timing.
The available options are :
- Slow(default) _ Fast
ED0 RAS# To CA% Delay-sets the delay in assertion of CA%’ from
assertion of RAS# in 66 MHz clocks. The available options are:
_ 3(default)
-2
ED0 RAS# Precharge Time -DRAM must continually be refreshed o&t
will lose its data. Normally,DRAM is refreshed entirely as the result of
a single request. This option allows you to determine the number of
CPU clocks allocated for the Row Address Strobe to accumulate its
charge before the DRAM is refreshed. If insufficient time is allowed,
refresh may be incomplete and date lost. The available options are :
- 3 (default)
-4
ED0 DRAM Read Bunt -Determines the timing for burst read to the
cache. If your DRAM type is ED0 DRAM, we suggest you select
x222(EDO) timing to get a better performance.
cB61x.LXustTkMMlml3-13