Gigabyte 6BA User manual

6BA
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 ...........................................................................................3-7
3.6. CMOS RTC & ISA CFG CMOS SRAM................................................................3-6
3.7. SPEAKER CONNECTOR INSTALLATION ........................................................3-9
3.8. HARDWARE RESET SWITCH CONNECTOR INSTALLATION.......................3-9
3.9. POWER LED CONNECTOR INSTALLATION ...................................................3-9

Table of Contents
3.10. IDE & ATAPI DEVICE INSTALLATION.............................................................3-9
3.11. PERIPHERAL DEVICE INSTALLATION...........................................................3-7
3.12. KEYBOARD & PS/2 MOUSE INSTALLATION..................................................3-7
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...................................................................................4-9
4.7. CHIPSET FEATURES SETUP............................................................................4-14
4.8. POWER MANAGEMENT SETUP.......................................................................4-16
4.9. PNP/PCI CONFIGURATION...............................................................................4-22
4.10. LOAD BIOS DEFAULTS....................................................................................4-21
4.11. LOAD PERFORMANCE DEFAULTS................................................................4-22
4.12. INTEGRATED PERIPHERALS .........................................................................4-23
4.13. USER PASSWORD...........................................................................................4-28
4.14. IDE HDD AUTO DETECTION...........................................................................4-32
4.15. SAVE & EXIT SETUP........................................................................................4-33
4.16. EXIT WITHOUT SAVING..................................................................................4-34

6BA
1-1
1. INTRODUCTION
1.1. PREFACE
Welcome to use the 6BA motherboard. It is a PentiumII 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 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 /
Keyboard and PS/2 Mouse Power On / ACPI features.
qSupports 4xDIMMs using 3.3V SDRAM DIMM module.
qSupports 8MB ~ 1 GB SDRAM memory on board.
qSupports ECC or Non-ECC type DRAM module.
q1xAGP slot, 4xPCI Bus slots, 2xISA Bus slots.
qSupports 2 channels Ultra DMA/33 IDE ports for 4 IDE Devices.
qSupports 2xCOM (16550), 1xLPT, 1x Floppy port.
qSupports USB port & PS/2 Mouse port.
qLicensed AWARD BIOS, 2M bits FLASH RAM.
q22 cm x 25 cm AT 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. (The different Hardware &
Software configuration will result in different benchmark testing results.)
•CPU PentiumII processor
•DRAM (32 x 2) MB SDRAM (MICRON MT 48LC2M8A1 -8)
•CACHE SIZE 512 KB included in CPU
•DISPLAY GA-600 AGP Display Card (4MB SGRAM)
•STORAGE Onboard IDE (IBM DHEA-34330)
•O.S. Windows 95 OSR 2.1
•DRIVER Display Driver at 1024 x 768 x 64k colors x 75Hz.
TRIONES Bus Master IDE Driver 3.70
Intel PentiumII
Processor 300MHz(100x3) 350MHz(100x3.5)
Winbench98
CPU mark32 802 930
FPU Winmark 1540 1800
Business Disk 1340 1370
Hi-End Disk 4010 4030
Business Graphics 169 190
Hi-End Graphics 216 250
Winstone98Business 24 25.9

6BA
1-3
3.3V EDO/SDRAM
DIMM Sockets
Floppy Port
1.4. BLOCK DIAGRAM
24MHz
66MHz
14.318MHz
33MHz
33MHz
33MHz
66MHz
66MHz
Ultra DMA/33
IDE Ports
IDE Bus
PCI Bus
ISA Bus
AGP Bus
LPT Port
Keyboard
COM Ports
DRAM Bus
PS/2 Mouse
USB Bus
USB Ports
14.318MHz
48MHz
14.318MHz
I/O
CHIPSET
83977TF
66MHz
AGP
SLOT Host Bus
INTEL
82443BX
CHIPSET
Clock
Gen
PIIX4
82371EB
CHIPSET
Clock
Gen

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

6BA
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.

6BA
2-1
2. SPECIFICATION
2.1. HARDWARE
•CPU −PentiumII processor 200 – 633 MHz.
−242 pins 66/100MHz slot1 on board.
•SPEED −66 /100MHz system speed.
−66 MHz AGP bus speed. (133MHz 2*mode)
−33 MHz PCI-Bus speed.
−8 MHz AT bus speed.
•DRAM MEMORY −4 banks 168 pins DIMM module sockets on board.
−Use 8 / 16 / 32 / 64 / 128 / 256 MB DIMM module
DRAM.
−Supports 8MB ~ 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 L2 cache memory included in
CPU.
−Supports DIB speed mode for L2 Cache.
•I/O BUS SLOTS −4 33MHz Master / Slave PCI-BUS.
−2 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.
•I/O PORTS −Supports 2 16550 COM ports.
−Supports 1 LPT port.
−Supports 1 Floppy port.
−Supports 2 USB ports.
−Supports PS/2 Mouse.

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 RAM.
−Supports Plug & Play, DMI Function.
•DIMENSION −AT Form Factor, 4 layers PCB.
2.2. SOFTWARE
•DRIVER −Bus Master IDE Driver.
−Suspend to HD utility. (Optional)
−INTEL LDCM®.
•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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.)

6BA
3-1
3. HARDWARE INSTALLATION
3.1. UNPACKING
The mainboard package should contain the following:
•The 6BA mainboard.
•The Retention Mechanism & Attach Mount
•USER'S MANUAL for main board.
•Cable set for IDE, Floppy & I/O devices.
•CD for mainboard Utilities.
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.
MMDO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN
DAMAGED.

Hardware Installation
3-2
3.2. MAINBOARD LAYOUT
SLOT1
82443LX
PIIX4
IR
PWR
SPK
TD
TB
RST
GN
HD
SOFT PWR
++
ON OFF
SW
BIOS
BANK2 BANK1 BANK0
FLOPPY
1
IDE2 IDE1
11
CN2CN1
FAN PWR
1
P
O
W
E
R
A
T
X
P
O
W
E
R
1
BAT1
6BA
SLOT1
SLOT3
SLOT4
SLOT2
PCI3
PCI2
PCI1
1
1
PCI4
KB
1
USB
COMB
1
1
LPT
AGP
PS/2
J12
AGP1
COMA
JP1
1
SB-LINK1
J11
1
4
3
2
1
+
BANK2
PIIX4
82443BX
GD
×Figure 3.1Ø
3.3. QUICK REFERENCE FOR JUMPERS & CONNECTORS
tI/O Ports Connector
USB USB port.
IDE1 For Primary IDE port.
IDE2 For Secondary IDE port.
KB For Keyboard port.
PS/2 For PS/2 Mouse port.
FLOPP
YFor Floppy port
COMB For Serial port2 (COM B).
COMA For Serial port1 (COM A).
LPT For LPT port.

6BA
3-3

Hardware Installation
3-4
tIR : INFRARED Connector (IR) -- Function Option
Pin No. Function
1IR Data Output
2GND
3IR Data Input
4Signal
5POWER (+)
tPWR : POWER ON LED/ Key-Lock
Pin No. Function
1LED POWER (+)
2LED POWER (-)
3LED POWER (-)
4Key-Lock
5GND
tSPK : SPEAKER Connector
Pin No. Function
1VCC
2NC.
3NC.
4Output
tTD : Turbo LED Connector
Pin No. Function
1LED POWER (+)
2LED POWER (-)
tRST : RESET Switch
Pin No. Function
1RESET Input
2GND
tGD : Green LED Connector
Pin No. Function
1LED POWER (+)
2LED POWER (-)
tGN : GN-SW
Pin No. Function
1CTRL-Signal

6BA
3-5
2GND

Hardware Installation
3-6
tHD : Hard Disk active LED (HD-LED)
Pin No. Function
1LED POWER (+)
2LED POWER (-)
tSoft PWR : Soft Power Switch
Pin No. Function
1CTRL-Signal
2GND
tFAN PWR : CPU cooling FAN Power Connector
Pin No. Function
1GND.
2+12V
3SENSE
tJ12 : System After Ac Back
Pin No. Function
1-2 Open Soft Off.
1-2 Close Full On.
tJP1 : Keyboard Power On Selection
Pin No. Function
1-2 Enabled Keyboard power on.
2-3 Disabled Keyboard power on.
tJ11 : Wake on Lan
Pin No. Function
1+5V SB
2GND
3Signal
tSB-LINK : For PCI Audio / Sound Card use only
Pin No. Function
1Signal
2GND
3NC
4Signal
5GND
6Signal

6BA
3-7
3.4. DRAM INSTALLATION
The main board can be installed with 8 / 16 / 32 / 64 / 128 / 256 MB 168 pins
DIMM module DRAM. When system bus speed is set to 100MHz, 100MHz
SDRAM is required. The DRAM memory system on main board consists of
bank 0, 1, 2 & bank 3.
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 ~ 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 could not be inserted into
socket completely.
3.5. CPU SPEED SETUP
The system bus speed can be set to 66.6MHz or 100MHz form the jumper
(JP8). 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 frequency RATIO and FSB Speed do not match with the
CPU.
Set system speed to 66MHz: JP8 pin 1-2 short will cause system
always run at 66 MHz FSB (Front Side Bus).
Set system speed to 100MHz: JP8 all pins open will cause system
always run at 100MHz FSB.
Set system speed to Auto: JP8 pin 2-3 short will detect system
speed 66/100MHz FSB automatically.
JP8
3 2 1
JP8
3 2 1
JP8
3 2 1

Hardware Installation
3-8
DIP SWITCH (SW)
1 2 3 4
FREQ.
RATIO
EXT.CLK.
MHz
INT.CLK.
MHz CPU Type
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
ON OFF ON ON 3100 300 PentiumII 300 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
MM The CPU is a sensitive electric component and it can be easily
damaged by static electricity, so users must keep it away from
metal 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.

6BA
3-9
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.
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 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. PERIPHERAL DEVICE INSTALLATION
After the I/O device installation and jumpers setup, the mainboard can be
mounted into the case and fixed by screw. To complete the mainboard
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. 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.