Gigabyte GA-6BXC User manual

6BXC
1
TABLE OF CONTENTS
1. INTRODUCTION
1.1. PREFACE ......................................................................................................1-1
1.2. KEY FEATHERS............................................................................................1-1
1.3. PERFORMANCE LIST..................................................................................1-2
1.4. BLOCK DIAGRAM.........................................................................................1-3
1.5. INTRODUCE THE PENTIUMII PROCESSOR & AGP.............................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..........................3-3
3.4. DRAM INSTALLATION .................................................................................3-6
3.5. CPU SPEED SETUP.....................................................................................3-7
3.6. CMOS RTC & ISA CFG CMOS SRAM.........................................................3-8
3.7. SPEAKER CONNECTOR INSTALLATION..................................................3-8
3.8. HARDWARE RESET SWITCH CONNECTOR INSTALLATION.................3-8
3.9. POWER LED CONNECTOR INSTALLATION.............................................3-8
3.10. IDE & ATAPI DEVICE INSTALLATION......................................................3-8

Table of Contents
2
3.11. PERIPHERAL DEVICE INSTALLATION....................................................3-9
3.12. KEYBOARD & PS/2 MOUSE INSTALLATION...........................................3-9
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.................................................................4-15
4.9. PNP/PCI CONFIGURATION........................................................................4-19
4.10. LOAD BIOS DEFAULTS .............................................................................4-21
4.11. LOAD PERFORMANCE DEFAULTS .........................................................4-22
4.12. INTEGRATED PERIPHERALS...................................................................4-23
4.13. SUPERVISOR/USER PASSWORD ...........................................................4-28
4.14. IDE HDD AUTO DETECTION.....................................................................4-29
4.15. SAVE & EXIT SETUP..................................................................................4-30
4.16. EXIT WITHOUT SAVING............................................................................4-31

6BXC
1-1
1. INTRODUCTION
1.1. PREFACE
Welcome to use the 6BXC motherboard. It is a PentiumII / Celeron Processor
based PC / AT compatible system with AGP / PCI / 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 / Celeron Processor based PC / AT compatible main board.
qSlot 1 supports PentiumII / Celeron processor running at 233-633 MHz.
qIntel 440BX chipset, Supports AGP / SDRAM / Ultra DMA/33 IDE / Keyboard
and PS/2 Mouse Power On / ACPI features.
qSupports 3xDIMMs using 3.3V SDRAM DIMM module.
qSupports 8 MB –768 MB 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 2xCOM (16550), 1xLPT (EPP / ECP), 1x1.44MB Floppy port.
qSupports 2xUSB ports, 1xPS/2 Mouse & 1xPS/2 Keyboard.
qLicensed AWARD BIOS, 2M bits FLASH ROM.
q30.5 cm x 18 cm ATX SIZE form factor, 4 layers PCB.

Introduction
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. (Different Hardware & Software
configuration will result in different benchmark testing results.)
•CPU PentiumII processor
•DRAM 128 MB SDRAM (SEC KM48S8030BT-GH)
•CACHE SIZE 512 KB included in CPU
•DISPLAY GA-601 AGP Display Card (4MB SGRAM)
•STORAGE Onboard IDE (IBM DHEA-38451)
•O.S. Windows NT™4.0
•DRIVER Display Driver at 1024 x 768 x 256 colors x 75Hz.
TRIONES Bus Master IDE Driver 3.70
Intel PentiumII
Processor 333MHz(66x5) 350MHz(100x3.5)
Winbench98
CPU mark32 864 947
FPU Winmark 1720 1810
Business Disk 1850 1900
Hi-End Disk 4590 4690
Business Graphics 185 204
Hi-End Graphics 207 232
Winstone98Business 33.3 34.6
Hi-End 36.9 39.2

6BXC
1-3
1.4. BLOCK DIAGRAM
24MHz
3.3V SDRAM
DIMM Sockets
14.318MHz
33 MHz
33MHz
Ultra DMA/33
IDE Ports
IDE Bus
PCI Bus
ISA Bus
AGP Bus
LPT Port
Keyboard
Floppy Port
COM Ports
PS/2 Mouse
USB Bus
14.318MHz
48MHz
14.318MHz
I/O
CHIPSET
ITE 8671
AGP
Host Bus
INTEL
82443BX
CHIPSET
PIIX4
82371EB
CHIPSET
ICS 9148-26
SLOT 1
66MHz
66 /
100 MHz
66 /
100 MHz
33 MHz
66 /
100 MHz

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

6BXC
1-5
Figure 3:Heatsink / FAN & Heat sink support for OEM PentiumII Processor
Figure 4:Boxed PentiumII Processor & Heat sink support

Introduction
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.

6BXC
2-1
2. SPECIFICATION
2.1. HARDWARE
•CPU −PentiumII/ Celeron processor 233 –633 MHz.
−242 pins 66 / 100MHz slot1 on board.
•SPEED −66/100 MHz system speed.
−66 MHz AGP bus speed. (2X mode 133MHz)
−33 MHz PCI-Bus speed.
−8 MHz AT bus speed.
•DRAM MEMORY −3 banks 168 pins DIMM module sockets on board.
−Use 8 / 16 / 32 / 64 / 128 / 256 MB DIMM module
DRAM.
−8 ~ 768MB SDRAM.
−Supports 3.3V SDRAM.
−Supports ECC or Non-ECC type DRAM.
•CACHE MEMORY −32 KB L1 cache memory included in CPU.
−256KB / 512 KB L2 cache memory included 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 onboard.
(Using IRQ14,15)
−Support Mode 3,4 IDE & ATAPI CD –ROM.
•I/O PORTS −Supports 2 16550 COM ports.
−Supports 1 EPP/ECP LPT port.
−Supports 1 1.44 / 2.88 MB Floppy port.
−Supports 2 USB ports.
−Supports PS/2 Mouse & PS/2 Keyboard.

Specification
2-2
•GREEN FUNCTION −Suspend mode support.
−Green switch & ACPI LED support.
−IDE & Display power down support.
−Monitor all IRQ / DMA / Display / I/O events.
•BIOS −2M bits FLASH ROM.
−Supports Plug & Play, DMI Function.
•DIMENSION −ATX Form Factor, 4 layers PCB.
2.2. SOFTWARE
•DRIVER −INTEL Bus Master IDE Driver.
−Suspend to HD utility.
−INTEL Patch 95
•BIOS −Licensed AWARD BIOS.
−AT CMOS Setup, BIOS / Chipset Setup, Green
Setup, Hard Disk Utility included.
•O.S. −Operation with MS-DOS, Windows95,
Windows98,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.)

BIOS Configuration
4-1
3. HARDWARE INSTALLATION
3.1. UNPACKING
The main board package should contain the following:
•The 6BXC main board.
•The Retention Mechanism & Attach Mount
•USER’S MANUAL for main board.
•Cable set for IDE, Floppy devices.
•Diskette or CD for main board Utility.
The main board contains sensitive electric components, which can be easily
damaged by static electricity, so the main board 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 main board 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 main board 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.
3.2. MAINBOARD LAYOUT

6BXC
4-2
PCB Rev:1.7
CPU
Intel
440BX
PIIX4
J15
SW 2
BIOS
6BXC
SLOT1
SLOT2
SLOT3
SLOT4
SLOT5
SLOT6
PCI 1PCI 2PCI 3PCI 4
AGP
DIMM 1
DIMM 3
DIMM 2
BANK 0
BANK 1
BANK 2
IDE 2
IDE 1
FLOPPY
COM A COM B
LPT USB PS/2
ATX Power
JP1
SW 1
PWR FAN
JP7
JP8
BAT1
JP9
SPK RST
1
PWR
11 1 1 1 1 1
HD IR GN SOFT
PWR GD
JP10
×Figure 3.1Ø
PCB Rev:1.9
CPU
Intel
440BX
PIIX4
J15
SW 2
BIOS
6BXC
SLOT1
SLOT2
SLOT3
SLOT4
SLOT5
SLOT6
PCI 1PCI 2PCI 3PCI 4
AGP
DIMM 1
DIMM 3
DIMM 2
BANK 0
BANK 1
BANK 2
IDE 2
IDE 1 FLOPPY
COM A COM B
LPT USB PS/2
ATX Power
JP1
SW 1
CPU FAN
JP7
JP8
BAT1
JP9
SPK RST
1
PWR
11 1 1 1 1 1
HD IR GN SOFT
PWR GD
JP10
PWR FAN
SYS FAN
RING PWR ON
Clear CMOS

BIOS Configuration
4-3
3.3. QUICK REFERENCE FOR JUMPERS & CONNECTORS
tI/O Ports Connector
USB USB port.
IDE 1 For Primary IDE port.
IDE 2 For Secondary IDE port.
PS/2 For PS/2 Keyboard port.
PS/2 For PS/2 Mouse port.
Floppy For Floppy port
COM B For Serial port2 (COM B).[Support Modem ring on.]
COM A For Serial port1 (COM A).[Support Modem ring on.]
LPT For LPT port.
ATX Power For ATX Power connector.
tSlot 1
For PentiumII Processor/Celeron installed
tCPU FAN : CPU cooling FAN Power Connector
Pin No. Function
1GND.
2+12V
3SENSE
tPower FAN : Power FAN Power Connector
Pin No. Function
1GND.
2+12V
3SENSE
tSystem FAN : System FAN Power Connector
Pin No. Function
1GND.
2+12V
3SENSE

6BXC
4-4
tJ15 : System After Ac Back
Open Soft Off
Short Full On
tJP1 : Keyboard Power On Selection
Pin No. Function
1-2 Enabled Keyboard power on.
2-3 Disabled Keyboard power on.(Default)
tJP10 : System Acceleration
1-2 short For 100MHz Turbo and other frequencies
2-3 short For 100MHz Normal (Default)
tJP7 : Wake on LAN Connector
Pin No. Function
1+5VSB
2GND
3CTRL-Signal
tJP11 : CLEAR CMOS Function
Pin No. Function
1-2 short CLEAR CMOS Function
2-3 short Normal Operation.(Default)
tInternal Ring Power on
Pin No. Function
1+5VSB
2GND
tJP8 : For PCI Sound Card Connector
Pin No. Function
1Signal
2GND
3NC
4Signal
5GND

BIOS Configuration
4-5
6Signal
tIR: INFRARED Connector (OPTIONAL)
Pin No. Function
1IR DATA OUTPUT
2GND
3IR DATA INPUT
4NC
5POWER¡]¡Ï¡^
JP9 : 2*11PIN Jumper
PWR: Soft Power Connector
Open: Normal Operation
Short: Power On/Off
RES: Reset Switch
Open: Normal Operation
Short: For Hardware Reset System
P+P − P − : Power LED
PIN 1 : anode (+)
PIN 2 : cathode ( − )
PIN 3 : cathode ( − )
1
JP9
PWR P+P
−
P
−
HD
RES SPKR
GN
GD
1
11
1

6BXC
4-6
SPKR: Speaker Connector
PIN 1 : VCC (+)
PIN 2 : NC
PIN 3 : NC
PIN 4 : Data (−)
HD: IDE Hard Disk Active LED
PIN 1: LED anode (+)
PIN 2: LED cathode (−)
GN: Green Function Switch
Open : Normal operation
Short : Entering Green Mode
GD: Green LED
PIN 1 : LED anode (+)
PIN 2 : LED cathode (−)
3.4. DRAM INSTALLATION
The main board can be installed with 8 / 16 / 32 / 64 / 128 / 256 MB 168 pins
DIMM module DRAM, and the DRAM speed must be 67~100 MHz for SDRAM
when system bus speed is set to 66MHz. When system bus speed is set to
100MHz, 100MHz SDRAM is required. The DRAM memory system on main
board consists of bank 0, 1& bank 2.
Since 168 pins DIMM module is 64 bits width, therefore 1 piece of DIMM
module may match a 64 bits system. The total memory size is 8 MB ~ 768MB
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 could not be inserted into socket
1
1
1
+
−

BIOS Configuration
4-7
completely.
3.5. CPU SPEED SETUP
The system bus speed can be set to 66 / 100MHz form the DIP SWITCH (SW1).
The user can change the DIP SWITCH (SW2) 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
frequency RATIO and FSB Speed do not match with the CPU.
DIP SWITCH (SW2)
1 2 3 4
FREQ.
RATIO
(SW2)
EXT.CLK.
MHz
(SW1)
AGP INT.CLK.
MHz CPU Type
OFF OFF ON ON 3.5 66 66 233 PentiumII 233 MHz
(Celeron 233MHz)
ON ON OFF ON 466 66 266 PentiumII 266 MHz
(Celeron 266MHz)
OFF ON OFF ON 4.5 66 66 300 PentiumII 300 MHz
(Celeron 300MHz)
ON OFF OFF ON 566 66 333 PentiumII 333 MHz
(Celeron 333MHz)
OFF OFF OFF ON 5.5 66 66 366 PentiumII 366 MHz
(Celeron 366MHz)
ON ON ON OFF 666 66 400 PentiumII 400 MHz
(Celeron 400MHz)
OFF ON ON OFF 6.5 66 66 433 PentiumII 433 MHz
(Celeron 433MHz)
OFF OFF ON ON 3.5 100 66 350 PentiumII 350 MHz
ON ON OFF ON 4100 66 400 PentiumII 400 MHz
OFF ON OFF ON 4.5 100 66 450 PentiumII 450 MHz
ON OFF OFF ON 5100 66 500 PentiumII 500 MHz
OFF OFF OFF ON 5.5 100 66 550 PentiumII 550 MHz
ON ON ON OFF 6100 66 600 PentiumII 600 MHz
OFF ON ON OFF 6.5 100 66 650 PentiumII 650 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

6BXC
4-8
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.
MDanger of explosion if battery is incorrectly replaced.
MReplace only with the same or equivalent type recommended by the
manufacturer.
MDispose of used batteries according to the manufacturer’s instructions.
3.7. SPEAKER CONNECTOR INSTALLATION
There is a speaker in AT system for sound purpose. The 4 - Pins connector
SPKR is used to connect speaker.
3.8. HARDWARE RESET SWITCH CONNECTOR INSTALLATION
The RESET switch on panel provides users with HARDWARE RESET function.
The system will do a cold start after the RESET switch is pushed 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.

BIOS Configuration
4-9
3.11. PERIPHERAL DEVICE INSTALLATION
After the I/O device installation and jumpers setup, the main board can be
mounted into the case and fixed by screw. To complete the main board
installation, the peripheral device could be installed now. The basic system
needs a display interface card. If the PCI - Bus device is to be installed in the
system, any one of four PCI - Bus slots can be used.
3.12. KEYBOARD & PS/2 MOUSE INSTALLATION
The main board supports PS/2 Mouse (J2). The BIOS will auto detect whether
the PS/2 Mouse is installed or not & assign IRQ12 for PS/2 Mouse port if it is
installed. After installing the peripheral device, the user should check
everything again, and prepare to power-on the system.