VIA Technologies Zida BX983D User manual

Handling Precautions
CAUTION
High potential static charge may cause damage to the integrated circuits on the board. Before
handling any mainboard outside of its protective packaging, ensure that there is no static
electric charge in your body.
Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent
type recommended by the manufacturer.
There are some basic precautions when handling the motherboard or other computer components:
♦Keep the board in its anti-static bag until you are ready to install it.
♦Protect your board from static electricity by well grounding of your body and the equipment during the
installation, such as wearing a grounded wrist strap.
♦Always handle the board by its edges.
♦Do not touch the components on the boards, add-on cards/modules and the “gold finger” connectors
plugged into the expansion slot. It is better to handle system components by their mounting bracket.
♦Ensure the system power is completely turn-off before doing any installation work.
Notice to Customers
The information contains in this User’s Guide with no liability whatsoever, and disclaims any express or implied
warranty, relating to sale and/or use of products including liability or warranties relating to fitness for a particular
purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. We shall not be
liable for any loss or profits, loss of business, loss of use or data, interruption of business, or for indirect, special,
incidental, or consequential damages arising from any defect or error in this User’s Guide or product.
We retains the right to make changes on this User’s Guide and product descriptions at any time, without notice.

Table of Contents
Page ii
Trademarks
VIA is a registered trademark of VIA Technologies, Incorporated.
Intel, Pentium, Pentium II, Celeron are registered trademark of Intel Corporation.
IBM, IBM PC, IBM PC/AT, PC-DOS, OS/2 and OS/2 WARP are registered trademarks of
International Business Machines Corporation.
MS-DOS, Windows, Windows NT, Windows 95 and Windows 98 are registered trademarks of
Microsoft Corporation.
AWARD BIOS is a product of Award Software Inc.
Third-party brands and names mentions in this User’s Guide are the property of their
respective owners.
User’s Guide Revision :1.01
Release Date : DECEMBER 1998
Part No : 90-BX3D1.01-00
Copyright 1998, All rights reserved.

Table of Contents
Page iii
Table of Contents
OVERVIEW....................................................................................................................................................4
AUTO JUMPER...............................................................................................................................................4
FEATURES SUMMARY....................................................................................................................................5
MAINBOARD INSTALLATION.........................................................................................................................6
CPU INSTALLATION......................................................................................................................................7
INSTALLING SYSTEM MEMORY (RAM)..........................................................................................................9
EXPANSION CARDS INSTALLATION ..............................................................................................................10
CONNECTING EXTERNAL CONNECTOR .........................................................................................................10
“AUTO JUMPER” GUIDE ..............................................................................................................................15
QUICK INSTALLATION GUIDE........................................................................................................................ 17
AWARD BIOS AND CMOS SETUP UTILITY .......................................................................................................20
AWARD CMOS SETUP.................................................................................................................................. 21
STANDARD CMOS SETUP...............................................................................................................................23
BIOS FEATURES SETUP .................................................................................................................................25
CHIPSET FEATURES SETUP.......................................................................................................................... 28
POWER MANAGEMENT SETUP.......................................................................................................................30
PNP/PCI CONFIGURATION ....................................................................................................................34
CPU SPEED SETTING..............................................................................................................................37
INTEGRATRD PERIPHERALS................................................................................................................38
QUICK REFERENCE OF MOTHERBOARD..........................................................................................................41

Mainboard Installation
Page 4
Features of the Board
OVERVIEW
Congratulations on purchasing the highest performance motherboard. With the advanced technologies
available today, this motherboard is designed to optimize for Intel’s processors. Three unbuffered, 3.3
Volts, 168-pin DIMM sockets are included for supporting SDRAM.
This motherboard utilizes VIA's VT82C691 PCI chipset. The VIA’s VT82C586B PCI/ISA IDE provides
an integrated Bus Mastering IDE controller with two high performance IDE interfaces for up to four IDE
devices (such as hard drives or CD-ROM). The integrated super I/O controller integrates the standard PC
I/O functions: floppy interface, two FIFO serial ports, one EPP/ECP capable parallel port, and support for
an IrDA and Consumer Infra Red compatible interface.
This mainboard is designed to support the new graphic interface standard, Accelerated Graphic Port (AGP),
The AGP interface can reach a theoretical ~532Mbytes/sec transfer rate for 3D graphics data. On the other
hand, the on-board 32-bit PCI local bus slots allow a high bandwidth data path, which serves as a super
highway, for intensive data-movement such as networking. The BIOS support PCI bridge user
configuration, which allows for further expansion of the system with PCI peripherals. Up to two 16-bit ISA
slots allow this board to be backward compatible with the older expansion card. A total of six expansion
slots may be populated with full length add-in cards, since one PCI and ISA slot share the same chassis I/O
panel.
AUTO JUMPER
This mainboard is within our “Auto Jumper” series, which eliminates the necessity for the user to be
bored by jumper settings on the motherboard. It is capable of detecting the CPU brand and core voltage,
setting the appropriate CPU speed according to instructions from the user through CMOS setup menu.
In addition, two “safe keys” are defined. Pressing“F”during power on clears the CMOS RAM data, while
pressing “J”during power on re-detects CPU in “Auto Jumper” mode.

Mainboard Installation
Page 5
FEATURES SUMMARY
This motherboard comes with following features:
þSupports Intel PENTIUM II® orCeleron® Processor with automatic voltage adjustment for BX98-3D.
þSupports Intel Socket 370 Celeron® Processor with automatic voltage adjustment for BX3D-CT.
þOptimized for the highest performance Intel PENTIUM II® processors with 100 MHz front-side bus for
BX98-3D
þOptimized for the highest performance Intel Socket 370 Celeron® processors with overclock 100 MHz front-
side bus for BX3D-CT
þAWARD PnP BIOS with support for power management, enhanced IDE/SCSI features and desktop
management interface (DMI) which allows higher level of hardware compatibility.
þFlash BIOS for a more easy upgrade path.
þThree 168-pin DIMM sockets support up to 768MB SDRAM
þOne Accelerated graphic port (AGP) for AGP card.
þTwo 16-bit ISA expansion slots and four 32-bit PCI expansion slots.
þIntegrated two PCI bus mastering Ultra IDE controller with two on-board connectors supporting up to
four IDE devices such as Hard Disk, CD-ROM or Tape Backup drives.
þIntegrated super I/O chip featuring one floppy disk controller, two 16550 UART compatible serial
ports, one high speed EPP/ECP parallel port, one Infra Red port.
þSupports “Auto Jumper ” for detecting CPU configurations.
þWAKEUP-LINK interface header supporting Intel Wake-On-LAN
þSupport either an AT or an ATX power supply
þSupport “ Modem Ring Wakeup “

Mainboard Installation
Page 6
MAINBOARD INSTALLATION
Installation Precautions
During installation and initial test, use caution to avoid personal injury and damage to wiring due to sharp
pins on connectors and printed circuit assemblies, rough chassis edges and corners, and hot components.
Adhere to warnings and limitations regarding accessibility into areas designated only for authorized
technical personnel.
A Quick Introduction
To Install and operate your the new motherboard, you must follow the steps below:
1. Install the CPU with cooling fan
2. Install RAM modules
3. Connect cables, wires and power connector
4. Install expansion cards
Auto Jumper
After hardware installation, the user should select the appropriate CPU speed in the “CPU
CONFIGURATION SETUP” menu within the CMOS setup. Notice that there exists no jumper on this
mainboard. The user may clear the CMOS content by pressing “F”key while switching on the system.
If a wrong CPU speed is selected, the system may behave unstable, causing the user not being able to get
into CMOS setup. Pressing the “J” key while switching on the system can make re-selection in this case.

Mainboard Installation
Page 7
CPU CARD INSTALLATION
The mainboard provides a 242-pin CPU card slot. The CPU card should have a fan attached to it to prevent
overheating. If this is not the case then purchase a fan before you turn-on the system. There is one CPU fan
power connector named J6 on-board.
+12V
(Red) Ground
(Black)
CPU FAN
Fig. 2 CPU Cooling Fan Installation Diagram
CAUTION
Without an effective cooling fan, the CPU can overheat and cause damage to both the CPU
and the motherboard.
CPU Cooling fan Connector
J6 provide the +12 Volts d.c. for your CPU cooling fan
J6 Signal Name
1NC
2 +12V
3Ground

Mainboard Installation
Page 8
CPU INSTALLATION
The motherboard provides a 370 pins, Socket 370. The CPU should have a fan attached to it to prevent
overheating. If this is not the case then purchase a fan before you turn-on the system.
1
90
Socket 370
Intel
CPU
2
45 degree Index
corner
CPU
COOLING
FAN
+12V (Red)
Ground (Black)
CPU Installation Diagram
CAUTION
Without a effective cooling fan, the CPU can overheat and cause damage to both the CPU
and the motherboard.

Mainboard Installation
Page 9
INSTALLING SYSTEM MEMORY (RAM)
The motherboard supports three 168-pin DIMM. The three 168-pin DIMM sockets are divided into three
banks and each bank can accept SDRAM module.
3.3V Key
Unbuffered
DRAM Key
Push to remove
DIMM module
Push to remove
DIMM module
64 Bit 168 PIN DIMM Module
Vertically insert
for installation
Fig. 3 168-Pin DIMM Module Installation Diagram

Mainboard Installation
Page 10
Expansion Cards Installation
At the most of beginning, you must read your expansion card documentation on any hardware and software
settings that may be required. The installation procedures are summarized as below:
1. Read the User’s Guide/Manual of your expansion card.
2. If necessary, set any jumpers on your expansion card.
3. Power-off the system and then disconnected the power cord.
4. Remove your computer’s cover.
5. Remove the metal bracket from one of the empty slot, ISA or PCI, corresponding to the type
of expansion card.
6. Carefully align the card’s connectors and press firmly, make sure at the connection is good.
7. Secure the card on the slot.
8. Replace the computer’s cover.
9. Setup the BIOS configuration if necessary.
10. Install the required software drivers for your expansion card.
CAUTION
Before adding or removing any expansion card or other system components, make sure that
you unplug your system power supply. Failure to do so may cause damage of your
motherboard and expansion cards.
Connecting External Connector
AT Power Connector
A 12-Pin power supplies provide two plugs incorporates standard ±5V and ±12V, each containing six wires,
two of which are black. Orient the connectors so that the black wires are together.
Pin Signal Name Pin Signal Name
1Power Good Signal 7Ground
2+5V 8Ground
3+12V 9-5V
4-12V 10 +5V
5Ground 11 +5V
6Ground 12 +5V

Mainboard Installation
Page 11
Two 6-Pin Plugs
From AT Power Supply
Vertically Insert
For Installation
Place 2 Black Wires,
On Each Of The
Plug, Closed To The
Centre
Fig. 4 AT Power Connector Installation
ATX Power Connector
A single 20-pin connector incorporates standard ±5V and ±12V, optional 3.3V and soft-on/off signals. With
a power supply, that supports remote power on/off, the mainboard can turn off the system power through
software control, such as the shutdown in Windows 95 Start menu. The system BIOS will turn the system
power off when it receives the proper APM command from the OS. APM must be enabled in the system
BIOS and OS in order for the soft-off feature to work correctly.
Pin Signal Name Pin Signal Name
1+3.3V 11 +3.3V
2+3.3V 12 -12V
3Ground 13 Ground
4+5V 14 PW_ON
5Ground 15 Ground
6+5V 16 Ground
7Ground 17 Ground
8PWRGOOD 18 -5V
9+5VSB 19 +5V
10 +12V 20 +5V
From ATX
Regulated Power
Supply
ATX Power
Connector Connector's Lock
(push to release) Onboard
receptacle
Fig.5 ATX Power Connector Installation

Mainboard Installation
Page 12
Floppy Drive Connector
This 34-pin connector supports the provided floppy drive ribbon cable. After connecting the single end to
the on-board “FLOPPY” connector, connect the remaining plugs on the other end to the floppy drives
correspondingly.
IDE Connector
The two on-board IDE connectors supports the provided 40-pin IDE hard disk ribbon cable. After
connecting the single end to the board, connect the two remaining plugs at the other end of your hard
disk(s). If you install two hard disks, you must configure the two drives by setting its jumpers according to
the documentation of your hard disk. Also, you may connect the two hard disks to be both Masters using
one ribbon cable on the primary IDE connector and one on the secondary IDE connector.
NOTICE
For the flat ribbon cable connection, please make sure that the pin 1 of the ribbon cable
(the red wire side of the cable) is correctly connected to the on-board connector’s pin 1 as
shown on the “Map of the Motherboard”.
Front Panel Function Connector
All the front panel indicator, speaker, and switch functions are grouped into a on-board 26-pin connector.
Front panel features supported include:
•System Reset, RESET
•Power LED, form KEYLOCK
•Hard Drive activity LED, IDE LED
•System Speaker, SPEAKER
•Soft-touch button power on/off, SW ON
•Turbo LED, TBLED
•External power saving control, EXTSMI (optional)
The connector pin out are described as the figure below:
KEY
LOCK
KEYLOCK
SPEAKER EXTSMI
TBLED RESET SW ON IDE LED
13
26 14
GND
GND
VCC SPKR
PW LED
GND GND
EXT
SMI
GND
VCC RST
GND
PUSH ON
GV VR
IDE
LED
ECC
Fig.6 The Onboard Function Connector Pin Out

Mainboard Installation
Page 13
About Soft Touch Power Button
For the ATX system case, the new soft touch power button replaces the main power switch to switch ON /
OFF your system. You can switch the system ON by pressing the button. If you want to switch OFF your
system, press the button and hold it for 4 seconds. You can also change the functions of the power button in
the CMOS setup at power management section.
Integrated Function Connector
The total of two USB device connectors, a PS/2 mouse, and an Infrared devices are all allocated at this
connector (JP12).
•Pin1 to Pin5 for USB1 connector
•Pin11 to Pin15 for USB2 connector
•Pin6 to Pin10 for PS/2 connector
•Pin16 to Pin20 InfraRed connector
The connector pin out signal definitions are described as the table below:
Pin Signal Name Pin Signal Name
1 (USB1) USB +5 Volt 11 (USB2) USB +5 Volt
2USB Port 1- 12 USB Port 2-
3USB Port 1+ 13 USB Port 2+
4Ground 14 Ground
5No Connect 15 No Connect
6 (PS/2 Mouse) PS/2 Data 16 (IR) +5V
7PS/2 Clock 17 No Connect
8Ground 18 Infrared Receive
9No Connect 19 Ground
10 +5V 20 Infrared Transmit
REPLACING BATTERY
A 3V, CR-2030, Lithium battery is installed on the on-board battery socket. This battery is sued to supply
the CMOS RAM backup power during system powered-off. Danger of explosion if battery is incorrectly
replaced. Therefore, if you have any difficulties, please consult to the technical personnel.
IR
USB 11
11 20USB 2
10 PS/2 Mouse

Mainboard Installation
Page 14
About Soft Touch Power Button
For the ATX system case, the new soft touch power button replaces the main power switch to switch ON /
OFF your system. You can switch the system ON by pressing the button. If you want to switch OFF your
system, press the button and hold it for 4 seconds. You can also change the functions of the power button in
the CMOS setup at power management section.
Infra-Red connector
Serial port 2 can be configured to support an IrDA module via a 5-pin header connector. Once configured
for IrDA, the user can transfer files to or from portable devices such as laptops, PDA’s and printers using
application software such as LapLink. The IrDA specification provides for data transfers at 115 Kbps from
a distance of 1 meter. Consumer IR is also supported by the same connector.
JP15 Pin Signal Name
1VCC, power source
2N/C
3IRRX, infra-red receive
4N/C
5IRTX, infra-red transmit

Mainboard Installation
Page 15
“AUTO JUMPER” GUIDE
•You can just select the Pentium II or Celeron CPU speed easily
through CMOS Setup Menu.
•To clear the CMOS contents, the user only needs to press the key
“F”during power on.
•If a wrong CPU speed is selected, the system may behave unstable,
causing the user not being able to get into CMOS setup. Pressing the
“J” key while switching on the system can enable the user to make
re-selection again.

Mainboard Installation
Page 16
Quick Installation Guide
CRYSTAL
AB
C
DEFG
J
K
VIA
VIA
M
FLOPPY
PRIMARY IDE
SECONDARY IDE
WAKEUP-LINK
IDE2 IDE1
DIMM3
DIMM2
DIMM1
AGP
CPUFAN
P
O
T
PCI1
PCI2
PCI3
PCI4
ISA1
ISA2
CPU SLOT
S
H
Q
COM1
COM2
1
Printer
14Front Panel JP7
JP12
11 20
10
BX98-3D
SPEAKER
SMI
KEYLOCK
RESET
PWR.ON
IDE..LED
J6
XY
J5
J4
BIOS
N
I
AUDIO HEADER
U

Mainboard Installation
Page 17
BX98-3D
A. Power Supply Connector K. ISA Add-in Board Connectors
B. ATX Power Supply Connector
C. AT Keyboard Connector M. Front Panel Function Connectors
D. Parallel (Printer) Port Header N. Flash BIOS
E. Integrated Functions Connector O. Floppy Drive Connector
F. 3.3v DIMM Sockets P. IDE device connector
G. Serial (COM1 and 2) Port Headers Q. WAKEUP-LINK Header
H. Accelerated Graphic Port (AGP)
I. 3V Lithium Battery S. SLOT 1 for PENTIUM II CPU Card
J. PCI Add-in Board Connectors T. CPU FAN Connector
X. J4 is CD Audio Input ( 1,3:Ground,2:Right,4:Left )
Y. J5 is CD Audio input ( 1:Right,2,3:Ground,4:Left ) U. Audio Header : Line Input
: Microphone Input
: Line Output
: Joystick

Mainboard Installation
Page 18
Quick Installation Guide
CRYSTAL
AB
C
DEFG
J
K
VIA
VIA
M
FLOPPY
PRIMARY IDE
SECONDARY IDE
WAKEUP-LINK
IDE2 IDE1
DIMM3
DIMM2
DIMM1
AGP
CPUFAN
P
O
T
PCI1
PCI2
PCI3
PCI4
ISA1
ISA2
S
H
Q
COM1
COM2
1
Printer
14Front Panel JP7
JP12
11 20
10
BX3D-CT
SPEAKER
SMI
KEYLOCK
RESET
PWR.ON
IDE..LED
XY
J5
J4
BIOS
N
I
AUDIO HEADER
U
J7 J6
Socket 370

Mainboard Installation
Page 19
BX3D-CT
A. Power Supply Connector K. ISA Add-in Board Connectors
B. ATX Power Supply Connector
C. AT Keyboard Connector M. Front Panel Function Connectors
D. Parallel (Printer) Port Header N. Flash BIOS
E. Integrated Functions Connector O. Floppy Drive Connector
F. 3.3v DIMM Sockets P. IDE device connector
G. Serial (COM1 and 2) Port Headers Q. WAKEUP-LINK Header
H. Accelerated Graphic Port (AGP)
I. 3V Lithium Battery S. SOECKET 370 for 370 CELERON CPU
J. PCI Add-in Board Connectors T. CPU FAN Connector
X. J4 is CD Audio Input ( 1,3:Ground,2:Right,4:Left )
Y. J5 is CD Audio input ( 1:Right,2,3:Ground,4:Left ) U. Audio Header : Line Input
: Microphone Input
: Line Output
: Joystick

Mainboard Installation
Page 20
Award BIOS and CMOS Setup Utility
GETTING START
All computer motherboards provide a Setup utility program for specifying the system configuration and
settings. If your motherboard came in a computer system, the proper configuration entries may have
already been made.
This motherboard has been programmed with Award BIOS setup utility. The setup utility program is stored
inside the on-board programmable Flash ROM chip. This Setup program allows user to modify the basic
system configuration. The system configuration is stored in the battery backup CMOS RAM (inside the
real time clock chip) so that it retains the setup information when the power is turned off. This chapter
explains the setup utility for the Award BIOS.
ENTERING SETUP
When you turn on the computer, the system allows you an opportunity to enter the BIOS Setup utility.
During the POST (Power On Self Test), you can see the below message appears at the bottom of the
screen, press <Del> key or simultaneously press <Ctrl>, <Alt> and <Esc> keys.
Press DEL to enter SETUP, ESC to skip memory test
If the message disappears before you respond, POST will continue with its test routines, thus preventing
you from calling up the Setup utility. However, if you still want to enter Setup, restart the system to try
again by turning it OFF and then ON or pressing the "RESET" button on the system case. You may also
restart your system by simultaneously pressing <Ctrl>, <Alt> and <Delete> keys. If you do not press the
keys at the correct time and the system does not boot up, and error message below may be displayed and
you will again be asked to,
PRESS F1 TO CONTINUE, CTRL-ALT-DEL TO ENTER SETUP
Summary of Control Keys
Up arrow Move to previous item
Down arrow Move to next item
Left arrow Move to the item in the left hand
Right arrow Move to the item in the right hand
Esc key Main Menu -- Quit and not save changes into CMOS
Status Page Setup Menu and Option Page Setup Menu -- Exit current page and return to Main Menu
PgUp key Increase the numeric value or make changes
PgDn key Decrease the numeric value or make changes
+ key Increase the numeric value or make changes
- key Decrease the numeric value or make changes
F1 key General help, only for Status Page Setup Menu and Option Page Setup Menu
(Shift)F2 key Change color from total 16 colors. F2 to select color forward, (Shift) F2 to select color backward
F3 key Calendar, only for Status Page Setup Menu
F5 key Restore the previous CMOS value from CMOS, only for Option Page Setup Menu
F6 key Load the default CMOS value from BIOS default table, only for Option Page Setup Menu
F7 key Load the setup default, only for Option Page Setup Menu
F10 key Save all the CMOS changes, only for Main Menu