Gigabyte 6BXDU User manual

Table of Contents
22
TABLE OF CONTENTS
1. INTRODUCTION
1.1. PREFACE.............................................................................................................1-1
1.2. KEY FEATURES..................................................................................................1-1
1.3. PERFORMANCE LIST.........................................................................................1-2
1.4. BLOCK DIAGRAM ...............................................................................................1-3
1.5. INTRODUCE THE PentiumII Processor..........................................................1-4
1.6. What is AGP?.......................................................................................................1-6
2. SPECIFICATION
2.1. HARDWARE........................................................................................................2-1
2.2. SOFTWARE.........................................................................................................2-2
2.3. ENVIRONMENT...................................................................................................2-2
3. HARDWARE INSTALLATION
3.1. UNPACKING........................................................................................................3-1
3.2. MAINBOARD LAYOUT........................................................................................3-2
3.3. QUICK REFERENCE FOR JUMPERS & CONNECTORS ................................3-2
3.4. DRAM INSTALLATION........................................................................................3-5
3.5. CPU SPEED SETUP ...........................................................................................3-5
3.6. CMOS RTC & ISA CFG CMOS SRAM................................................................3-7
3.7. SPEAKER CONNECTOR INSTALLATION ........................................................3-7
3.8. HARDWARE RESET SWITCH CONNECTOR INSTALLATION.......................3-7
3.9. POWER LED CONNECTOR INSTALLATION ...................................................3-7

6BXDU
23
3.10. IDE & ATAPI DEVICE INSTALLATION.............................................................3-7
3.11. SCSI DEVICE INSTALLATION ........................................................................3-7
3.12. PERIPHERAL DEVICE INSTALLATION...........................................................3-13
3.13. KEYBOARD & PS/2 MOUSE INSTALLATION..................................................3-13
4. BIOS CONFIGURATION
4.1. ENTERING SETUP .............................................................................................4-1
4.2. CONTROL KEYS.................................................................................................4-1
4.3. GETTING HELP...................................................................................................4-2
4.3.1. Main Menu................................................................................................4-2
4.3.2. Status Page Setup Menu / Option Page Setup Menu...............................4-2
4.4. THE MAIN MENU.................................................................................................4-2
4.5. STANDARD CMOS SETUP MENU ....................................................................4-4
4.6. BIOS FEATURES SETUP...................................................................................4-8
4.7. CHIPSET FEATURES SETUP............................................................................4-12
4.8. POWER MANAGEMENT SETUP.......................................................................4-17
4.9. PNP/PCI CONFIGURATION...............................................................................4-21
4.10. LOAD BIOS DEFAULTS....................................................................................4-23
4.11. LOAD PERFORMANCE DEFAULTS................................................................4-24
4.12. INTEGRATED PERIPHERALS. ........................................................................4-25
4.13. SUPERVISOR PASSWORD/USER PASSWORD...........................................4-30
4.14. IDE HDD AUTO DETECTION...........................................................................4-31
4.15. SAVE & EXIT SETUP........................................................................................4-32
4.16. EXIT WITHOUT SAVING..................................................................................4-33

Introduction
1-1
1. INTRODUCTION
1.1. PREFACE
Welcome to use the 6BXDU motherboard. It is a Dual PentiumII Processor
based PC / AT compatible system with AGP / PCI / SCSI / ISA Bus, and has
been designed to be the fastest PC / AT system. There are some new features
allow you to operate the system with just the performance you want.
This manual also explains how to install the motherboard for operation, and
how to set up your CMOS CONFIGURATION with BIOS SETUP program.
1.2. KEY FEATURES
qIntel PentiumII Processor based PC / AT compatible mainboard.
qSlot 1 supports PentiumII processor running at 200-633 MHz.
qIntel 440BX chipset, Supports AGP / SDRAM / Ultra DMA 33 IDE / Wake
on LAN / Keyboard and PS/2 Mouse Power On/3 steps ACPI LED
features.
qSupports Intel LDCMNetwork Manageability.
qSupports 4xDIMMs using 3.3V SDRAM DIMM module.
qSupports 16MB - 1 GB SDRAM memory on board.
qSupports ECC or Non-ECC type DRAM module.
q1xAGP slot, 4xPCI Bus slots, 3xISA Bus slots.
qSupports 2 channels Ultra DMA 33 IDE ports for 4 IDE Devices.
qSupports 2 Channels SCSI.
qSupports 2xCOM (16550), 1xLPT (EPP / ECP), 1x Floppy port.
qSupports 2xUSB ports, 1xPS/2 Mouse, 1xPS/2 Keyboard.
qLicensed AWARD BIOS, 2M bits FLASH RAM.
q30.5 cm x 26.3 cm ATX SIZE form factor, 4 layers PCB.

6BXDU
1-2
1.3. PERFORMANCE LIST
The following performance data list is the testing results of some popular
benchmark testing programs.
These data are just referred by users, and there is no responsibility for different
testing data values gotten by users. (The different Hardware & Software
configuration will result in different benchmark testing results.)
•CPU PentiumII processor
•DRAM (128x1)MB SDRAM (TOSHIBA TC59S6408FTL-80H)
•CACHE SIZE 512 KB included in CPU
•DISPLAY GA-601 AGP Display Card (4MB SGRAM)
•STORAGE Onboard Ultra II SCSI (IBM DDRS-39130)
•O.S. Windows NT™4.0
•DRIVER Display Driver at 1024 x 768 x 64k colors x 75Hz.
Adaptec AIC-789x PCI Ultra II SCSI Driver
Intel PentiumII
Processor 300MHz(100x3) 350MHz(100x3.5)
Winbench98
CPU mark32 776 905
FPU Winmark 1540 1800
Business Disk 2070 2080
Hi-End Disk 4840 4950
Business Graphics 172 197
Hi-End Graphics 180 208
Winstone98Business 31 33.8
Hi-End 34.6 37.8

Introduction
1-3
1.4. BLOCK DIAGRAM
48MHz
3.3V SDRAM
DIMM Sockets
14.318MHz
66 / 100
MHz
Ultra DMA/33
IDE Ports
IDE Bus
PCI Bus
ISA Bus
AGP Bus
LPT Port
Keyboard
Floppy Port
COM Ports
DRAM Bus
PS/2 Mouse
USB Bus
USB Ports
14.318MHz
48MHz
14.318MHz
I/O
CHIPSET
ITE8671
CPU 1
Host Bus
INTEL
82443BX
CHIPSET
Clock Gen
Buffer
PIIX4
82371EB
CHIPSET
Clock Gen
AGP
66MHz
66/100
MHz
66/100MHz
33
MHz
66/100MHz
CPU 2
PCI Bus
40MHz
OSC
SCSI
CHIPSET
AIC-7896
Ultra SCSI Port
INT LVD
INT. LVD
EXT. LVD

6BXDU
1-4
1.5. INTRODUCE THE Pentium

II Processor & AGP
Figure 1:Retention Mechanism & attach Mount
Figure 2:OEM PentiumII Processor

Introduction
1-5
Figure 3:Heatsink / FAN & Heat sink support for OEM PentiumII Processor
Figure 4:Boxed PentiumII Processor & Heat sink support

6BXDU
1-6
1.6 What is AGP ?
The Accelerated Graphics Port (AGP) is a new port on the Host-To-PCI bridge
device that supports an AGP port. The main purpose of the AGP port is to
provide fast access to system memory.
The AGP port can be used either as fast PCI port (32-bits at 66MHz vs. 32-bits
at 33MHz) or as an AGP port which supports 2x data-rate, a read queue, and
side band addressing. When the 2x-data rate is used the port can transmit data
at 533MB/sec (66.6*2*4). The read-queue can be used to pipeline reads –
removing the effects of the reads-latency. Side band addressing can be used to
transmit the data address on a separate line in order to speed up the
transaction.

Specification
2-1
2. SPECIFICATION
2.1. HARDWARE
•CPU −PentiumII processor 200 –633 MHz.
−242 pins 66/100MHz slot1 on board.
•PROTECTION −Speaker Alarm when detect "CPU FAN Failure" or
“CPU Overheat”.
−Automatically slow down CPU speed when "CPU
Overheat".
−Intel LDCMsupported.
−H/W monitor power status (±5V, ±12V, VcoreA,
VcoreB, voltage & CMOS battery voltage).(Optional)
•SPEED −66/100 MHz system speed.
−66 MHz AGP bus speed. (2Xmode 133MHz)
−33 MHz PCI-Bus speed.
−8 MHz AT bus speed.
•DRAM MEMORY −4 banks 168 pins DIMM module sockets on board.
−Use 16 / 32 / 64 / 128 / 256 MB DIMM module DRAM.
−16 ~ 1 GB SDRAM.
−Supports 3.3V SDRAM.
−Supports ECC or Non-ECC type DRAM.
•CACHE MEMORY −32 KB 1st cache memory included in CPU.
−256KB/512 KB 2nd cache in CPU.
−Supports DIB speed mode for L2 Cache.
•I/O BUS SLOTS −4 33MHz Master / Slave PCI-BUS.
−3 8MHz 16 bits ISA BUS.
−1 66MHz / 133MHz AGP bus.
•IDE PORTS −2 Ultra DMA/33 Bus Master IDE channels on
board.(Using IRQ14,15)
−Support Mode 3,4 IDE & ATAPI CD –ROM.

6BXDU
2-2
•SCSI PORTS −Supports 2 Channels SCSI .
•I/O PORTS −Supports 2 16550 COM ports.
−Supports 1 EPP/ECP LPT port.
−Supports 1 Floppy port.
−Supports 2 USB ports.
−Supports PS/2 Mouse & Keyboard.
•GREEN FUNCTION −Suspend mode support.
−IDE & Display power down support.
−Monitor all IRQ / DMA / Display / I/O events.
•BIOS −2M bits FLASH RAM.
−Supports Plug & Play, DMI Function.
•DIMENSION −ATX Form Factor, 4 layers PCB.
2.2. SOFTWARE
•DRIVER −Intel LDCMoptional.
−Health monitor Utility.
−Bus Master IDE Driver.
−Adaptec SCSI Driver.
•BIOS −Licensed AWARD BIOS.
−AT CMOS Setup, BIOS / Chipset Setup, Green
Setup, Hard Disk Utility included.
−Monitor Health status.
•O.S. −Operation with MS-DOS, Windows95,
WINDOWSNT, OS/2, NOVELL and SCO UNIX.
2.3. ENVIRONMENT
•Ambient Temp. −0°C to +50°C (Operating).
•Relative Hum. −0 to +85% (Operating).
•Altitude −0 to 10,000 feet (Operating).
•Vibration −0 to 1,000 Hz.
•Electricity −4.9 V to 5.2 V. (Max. 20A current at 5V.)

Hardware Installation
3-1
3. HARDWARE INSTALLATION
3.1. UNPACKING
The mainboard package should contain the following:
•The 6BXDU mainboard.
•The Retention Mechanism & Attach Mount
•USER'S MANUALS for mainboard & SCSI device.
•Adaptec User’s Guide.
•Cable set for IDE, Floppy, SCSI devices.
•Diskettes and CD for Mainboard Utility.
•External LVD SCSI port adapter.
The mainboard contains sensitive electric components, which can be easily
damaged by static electricity, so the mainboard should be left in its original
packing until it is installed.
Unpacking and installation should be done on a grounded anti-static mat. The
operator should be wearing an anti static wristband, grounded at the same
point as the anti-static mat.
Inspect the mainboard carton for obvious damage. Shipping and handling may
cause damage to your board. Be sure there are no shipping and handling
damages on the board before proceeding.
After opening the mainboard carton, extract the system board and place it only
on a grounded anti-static surface component side up. Again inspect the board
for damage. Press down on all of the socket IC's to make sure that they are
properly seated. Do this only on with the board placed on a firm flat surface.
M DO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN DAMAGED.

6BXDU
3-2
3.2. MAINBOARD LAYOUT
6BXDU
PIIX4
INTEL
443BX
adaptec
AIC-7896
CPU 1
CPU 2
BAT1
IDE 1
IDE 2
FLOPPY
BANK 0
BANK 1
BANK 2
BANK 3
LVD
LVDSE
LVD
SW
IR
System
FAN
JP11
J11
AGP
PCI 1PCI 2PCI 3PCI 4 J13
ISA 1ISA 2ISA 3
JP12
JP6
JP1
J1
FAN
PWR1
FAN
PWR2
ATX PWR
PS/2
USB
LPT
COMA COMB
JP9
Channel A
Channel B
×Figure 3.1Ø
M If you use single CPU, please install to CPU2 slot.
3.3. QUICK REFERENCE FOR JUMPERS & CONNECTORS
tI/O Ports Connector
USB USB port.
LVD Ultra II SCSI port
SE Ultra SCSI port
IDE1 For Primary IDE port.
IDE2 For Secondary IDE port.
PS/2 For PS/2 Keyboard / Mouse port.
Floppy For Floppy port
COM B For Serial port2 (COM B).
COM A For Serial port1 (COM A).
LPT For LPT port.
tSlot 1/ Slot 2
For PentiumII processor installed
tJ1 : System After Ac Back
Pin No. Function
1Signal

Hardware Installation
3-3
2GND
tIR : INFRARED Connector (IR) --(Optional)
Pin No. Function
1IR Data Output
2GND
3IR Data Input
4Signal
5POWER (+)
tFAN PWR1/FAN PWR2: CPU cooling FAN Power Connector
Pin No. Function
1GND.
2+12V
3SENSE
tSystem FAN : System FAN Power Connector
Pin No. Function
1GND.
2+12V
3SENSE
tJP1 : Keyboard Power On Selection
Pin No. Function
1-2 short Enabled Keyboard power on.
2-3 short Disabled Keyboard power on.(Disabled)
tJP9 (SB-LINK) : For PCI Audio / Sound Card use only
Pin No. Function
1Signal
2GND
3NC
4Signal
5GND
6Signal
tJP8 : Wake on LAN
Pin No. Function
1+5V SB
2GND
3Signal

6BXDU
3-4
tJP12 : SCSI HDLED Function
Pin No. Function
1-2 short SCSI HDLED Enable.(Default)
2-3 short SCSI HDLED Disable.
tJ13 : CASE OPEN
Pin No. Function
1Signal
2GND
tJP11 : Onboard PCI SCSI Function
Pin No. Function
1-2 short Onboard PCI SCSI Disable.
2-3 short Onboard PCI SCSI Enable.(Default)
JP10 : 2*11 PIN Jumper
PW: Soft Power Connector
Open: Normal Operation
Short: Power On/Off
RE: Reset Switch Open: Normal Operation
Short: For Hardware Reset System
P+P − P − : Power LED
PIN 1 : anode (+)
PIN 2 : cathode (−)
PIN 3 : cathode (−)
PW P+P-P- H+
RE SPKR
GN
G−
JP10 1
1 1
1H−
G+GN
1

Hardware Installation
3-5
SPKR : Speaker Connector
PIN 1 : VCC
PIN 2 : NC
PIN 3 : NC
PIN 4 : Data
H + H − : IDE Hard Disk Active LED
PIN 1: LED anode (+)
PIN 2: LED cathode (−)
GN: Green Function Switch
Open : Normal operation
Short : Entering Green Mode
G − G + : Green LED PIN 1 : LED anode (+)
PIN 2 : LED cathode (−)
3.4. DRAM INSTALLATION
The mainboard can be installed with 16 / 32 / 64 / 128 / 256 MB 168 pins DIMM
module DRAM. The DRAM memory system on mainboard consists of bank 0,
1, 2 & bank 3.
Since 168 pins DIMM module is 64 bits width, using 1 PCS which can match a
64 bits system. The total memory size is 16MB ~ 1 GB SDRAM. The DRAM
installation position refer to Figure 3.1, and notice the Pin 1 of DIMM module
must match with the Pin 1 of DIMM socket. Insert the DRAM DIMM module into
the DIMM socket at Vertical angle. If there is a wrong direction of Pin 1, the
DRAM DIMM module couldn't be inserted into socket completely.
3.5. CPU SPEED SETUP
The system bus speed can be set to 66MHz or 100MHz form the jumper (JP6).
The user can change the DIP SWITCH (SW) selection to set up the CPU speed
for different processors. The CPU speed must match with the frequency
RATIO and Front Side Bus (FSB) speed. It will cause system hanging up if the
1
1
−
1+

6BXDU
3-6
frequency RATIO and FSB Speed do not match with the CPU.
Set system speed to 66MHz: JP6 pin 1-2 short will cause system
always run at 66 MHz FSB (Front Side Bus).
Set system speed to 100MHz: JP6 all pins open will cause system
always run at 100MHz FSB.
Set system speed to Auto: JP6 pin 2-3 short will detect system speed
66/100MHz FSB automatically.
DIP SWITCH (SW)
1 2 3 4
FREQ.
RATIO
EXT.CLK.
MHz INT.CLK. MHz CPU Type
ON OFF ON ON 366 200 PentiumII 200 MHz
OFF OFF ON ON 3.5 66 233 PentiumII 233 MHz
ON ON OFF ON 466 266 PentiumII 266 MHz
OFF ON OFF ON 4.5 66 300 PentiumII 300 MHz
ON OFF OFF ON 566 333 PentiumII 333 MHz
OFF OFF OFF ON 5.5 66 366 PentiumII 366 MHz
OFF OFF ON ON 3.5 100 350 PentiumII 350 MHz
ON ON OFF ON 4100 400 PentiumII 400 MHz
OFF ON OFF ON 4.5 100 450 PentiumII 450 MHz
ON OFF OFF ON 5100 500 PentiumII 500 MHz
OFF OFF OFF ON 5.5 100 550 PentiumII 550 MHz
M The CPU is a sensitive electric component and it can be easily
damaged by static electricity, so users must keep it away from metal
JP6
3 2 1
JP6
3 2 1
JP6
3 2 1

Hardware Installation
3-7
surface when the CPU is installed onto main board.
3.6. CMOS RTC & ISA CFG CMOS SRAM
There're RTC & CMOS SRAM on board; they have a power supply from
external battery to keep the DATA inviolate & effective. The RTC is a REAL-
TIME CLOCK device, which provides the DATE & TIME to system. The CMOS
SRAM is used for keeping the information of system configuration, so the
system can automatically boot OS every time. Since the lifetime of internal
battery is 5 years, the user can change a new Battery to replace old one after it
cannot work.
3.7. SPEAKER CONNECTOR INSTALLATION
There is a speaker in AT system for sound purpose. The 4 - Pins connector
SPK is used to connect speaker. Anode connects +, Cathode connects −.
3.8. HARDWARE RESET SWITCH CONNECTOR INSTALLATION
TheRESET switchon panelprovides userswith HARDWARERESET function.
The system will do a cold start after the RESET button is pressed and released
by user. The RESET switch is a 2 PIN connector and should be installed to
RST on main board.
3.9. POWER LED CONNECTOR INSTALLATION
System has power LED lamp on the panel of case. The power LED will light
on/off or flash to indicate which step on the system. The connector should be
connected to PWR of main board in correct direction.
3.10. IDE & ATAPI DEVICE INSTALLATION
There are two-Enhanced PCI IDE ports (IDE1, IDE2)on board,which following
ATAPI standard SPEC. Any one IDE port can connected to two ATAPI devices
(IDE Hard Disk, CD-ROM & Tape Driver), so total four ATAPI devices can exist
in a system. The HD is the active LED port for ATAPI devices.
3.11. SCSI DEVICE INSTALLATION
There are two ULTRA II SCSI channels on-board which both channel A and B
have 68-pin Ultra II SCSI ports for Ultra Wide and Ultra II SCSI devices.
Channel B has one 50-pin 8bit SCSI port for Ultra SCSI devices. Total of 30
SCSI devices (15 devices per channel) can exist within one system. The

6BXDU
3-8
termination of the channel A and channel B can be adjusted from the
Integrated Peripherals of the CMOS SETUP MENU. The termination of
channel A can be set to “Enabled”or “Disabled”. The termination of channel B
canbe setto ”Both”,”High Byte”,“LowByte”, or“None”for thosetypes ofthe
SCSI devices which being connected to the SCSI ports to ensure proper
functionality.
Terminator ON/OFF rules
State 1. SCSI Devices connecting to the Channel A:
CASE 1: Channel A Termination: Enabled
Channel B Termination: Both
Mainboard
SCSI DEVICE SCSI DEVICE
CH A
Terminator Enabled
LVD LVD
CH A
15
LVD
Terminator ON
1
Mainboard
SCSI DEVICE SCSI DEVICE
16 bit 16 bit
CH A
15
2
CH A
Terminator Enabled Terminator OFF Terminator ON
Mainboard
EXT.
LVD SCSI or
Ultra wide
DEVICE
EXT. LVD SCSI
Terminator
EXT LVD SCSI Port
CH A
3
CH A
Terminator Enabled
Terminator ON
To boot from EXT.SCSI device,
please press <Ctrl> <A> for
SCSISelect Utility and set the
Advanced configuration
option/ Support Removable
Disks Under BIOS as Fixed
Disks to “All Disks”.

Hardware Installation
3-9
CASE 2: Channel A : Disabled
Channel B : Both
1
LVD
SCSI DEVICE
CH A Terminator Disable
Mainboard
LVD
SCSI DEVICE
CH A
8
LVD
SCSI DEVICE LVD SCSI DEVICE
LVD
Terminator ON
7
LVD Terminator ON
Mainboard
EXT.
LVD SCSI
or Ultra wide
DEVICE
CH A Terminator Disable
LVD SCSI
Terminator EXT LVD SCSI Port
CH A
LVD
SCSI DEVICE LVD SCSI DEVICE
LVD
Terminator ON
14
2
Terminator ON
3
16 bit
SCSI DEVICE
CH A
Terminator Disable
Mainboard
16 bit
SCSI DEVICE
CH A
8
16 bit
SCSI DEVICE 16 bit SCSI DEVICE
Terminator ON
7
Terminator ON Terminator OFF Terminator OFF
4
16 bit
SCSI DEVICE
CH A
Terminator Disable
Mainboard
16 bit
SCSI DEVICE
CH A
8
LVD
SCSI DEVICE LVD SCSI DEVICE
Terminator ON
7
Terminator ON Terminator OFF Terminator OFF