Gigabyte GA - 686KX User manual

GA - 686KX
USER'S MANUAL
Pentium II Processor MAINBOARD
RE . 1 Second Edition

GA-686KX
The author assumes no responsibility for any errors or omissions which may
appear in this document nor does it make a commitment to update the
information contained herein.
Third-party brands and names are the property of their respective
owners.
AP IL 26, 1997 Taipei, Taiwan
TABLE OF CONTENTS
1. INTRODUCTION...........................................................................................1-
2

Table of Contents
1.1. P EFACE...............................................................................................1-
1.2. KEY FEATU ES.....................................................................................1-
1.3. PE FO MANCE LIST............................................................................1-
1.4. BLOCK DIAG AM..................................................................................1-
1.5. INT ODUCE THE Pentium II Processor.............................................1-
2. SPECIFICATION..........................................................................................2-
2.1. HA DWA E...........................................................................................2-
2.2. SOFTWA E............................................................................................2-
2.3. ENVI ONMENT......................................................................................2-
3. HARDWARE INSTALLATION.....................................................................3-
3.1. UNPACKING...........................................................................................3-
3.2. MAINBOA D LAYOUT...........................................................................3-
3.3. QUICK EFE ENCE FO JUMPE S & CONNECTO S....................3-
3.4. D AM INSTALLATION...........................................................................3-
3.5. CPU SPEED SETUP..............................................................................3-
3.6. CMOS TC & ISA CFG CMOS S AM..................................................3-
3.7. SPEAKE CONNECTO INSTALLATION............................................3-
3.8. HA DWA E ESET SWITCH CONNECTO INSTALLATION...........3-
3.9. POWE LED CONNECTO INSTALLATION.......................................3-
3.10. G EEN LED INSTALLATION...............................................................3-
3.11. IDE & ATAPI DEVICE INSTALLATION................................................3-
3.12. PE IPHE AL DEVICE INSTALLATION..............................................3-
3.13. KEYBOA D & PS/2 MOUSE INSTALLATION....................................3-
3.14. KEYBOA D SETTING FUNCTION......................................................3-
4. BIOS CONFIGURATION..............................................................................4-
4.1. ENTE ING SETUP.................................................................................4-
4.2. CONT OL KEYS....................................................................................4-
4.3. GETTING HELP......................................................................................4-
4.3.1. Main Menu...................................................................................4-
3

GA-686KX
4.3.2. Status Page Setup Menu / Option Page Setup Menu.................4-
4.4. THE MAIN MENU...................................................................................4-
4.5. STANDA D CMOS SETUP MENU........................................................4-
4.6. BIOS FEATU ES SETUP......................................................................4-
4.7. CHIPSET FEATU ES SETUP...............................................................4-
4.8. POWE MANAGEMENT SETUP..........................................................4-
4.9. PNP/PCI CONFIGU ATION..................................................................4-
4.10. INTEG ATED PE IPHE ALS............................................................4-
4.11. LOAD SETUP DEFAULTS...................................................................4-
4.12. USE PASSWO D..............................................................................4-
4.13. IDE HDD AUTO DETECTION..............................................................4-
4.14. HDD LOW LEVEL FO MAT.................................................................4-
4.15. SAVE & EXIT SETUP...........................................................................4-
4.16. EXIT WITHOUT SAVING......................................................................4-
5. AT TECHNICAL INFORMATION.................................................................5-
5.1. I/O BUS CONNECTO PIN OUT...........................................................5-
5.1.1. ISA SLOT PIN OUT.....................................................................5-
5.1.2. PCI - BUS SLOT PIN OUT..........................................................5-
5.2. I/O & MEMO Y MAP..............................................................................5-
5.3. TIME & DMA CHANNELS MAP...........................................................5-
5.4. INTE UPT MAP...................................................................................5-
5.5. TC & CMOS AM MAP........................................................................5-
APPENDIX A: POST MESSAGE....................................................................A-
APPENDIX B: POST CODES.........................................................................B-
APPENDIX C: BIOS DEFAULT DRI E TABLE.............................................C-
APPENDIX D: PROBLEM SHEET..................................................................D-
APPENDIX E: FCC DOCUMENT..................................................................E-1
4

Introduction
1. INTRODUCTION
1.1. PREFACE
Welcome to use the GA-686KX motherboard. The motherboard is a
Pentium II Processor based PC/AT compatible system with ISA bus and
PCI Local 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 CONFIGU ATION with BIOS SETUP program.
1.2. KEY FEATURES
qIntel Pentium II Processor based PC / AT compatible mainboard.
qSlot 1 on board supports Pentium II processor running at 233-333 MHz.
qSupport CPU FAN Failure & Overheat Alarm.
qSupport automatically slow down CPU speed when CPU FAN Failure or
Overheat.
qIntel 440FX chipset.
qSupports 8 - 768 MB D AM memory on board.
q5 Master / Slave PCI Bus slots, 3 ISA Bus slots.
qSupports 2 channels Enhance PCI IDE ports for 4 IDE Device.
qSupports 2xCOM (16550), 1xLPT (EPP / ECP), 1x1.44MB Floppy port.
qSupports 2xUSB ports.
qSupports Green function, Plug & Play function.
qLicensed AWA D BIOS, FLASH EEP OM for BIOS update.
qATX form factor, 4 layers PCB.
1-1

GA-686KX
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 alues gotten by
users. (The different Hardware & Software configuration
will result in different benchmark testing results.)
·CPU Pentium II processor
·D AM 32 MB EDO
·CACHE SIZE 512 KB included in CPU
·DISPLAY Matrox Millennium 2MB
·STO AGE Onboard IDE port + Quantum FB 1280AT IDE Drive
·O.S. Windows95 with Display Driver at 1024 x 768 x 256
colors x 70Hz & BusMaster IDE Driver.
Processor Intel Pentium II
233 MHz 266MHz 300MHz
Winbench97
CPU mark32 610 695 781
Winstone
Business
Hi-End
50.4
23.7
53.1
25.5
55.4
26.9
Intel Media
Benchmark 1.0 339.96 381.63 427.76
1-2

Introduction
1.4. BLOCK DIAGRAM
Pentium II Processor
3.3V
Main
Memory
(D AM)
Control
Address
Data
Host Bus
Second Level
Cache
PMC
Addr
Cntl
PCI Bus
Control
Address/Data
PCI
Device(s)
ISA
Device(s)
PIIX3CD OM
Hard Disk
Fast IDE
ISA Bus
I/O
Device(s)
Cntl
Data
DBX
1-3

GA-686KX
1.5. INTRODUCE THE Pentium II Processor
Figure 1: etention Mechanism & attach Mount
Figure 2:OEM Pentium II Processor
1-4

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

GA-686KX
2. SPECIFICATION
2.1. HARDWARE
· CPU - Pentium II processor 233 - 333 MHz.
- 242 pins slot1 on board.
· P OTECTION - Onboard Buzzer Alarm when detect "CPU FAN
Failure".
- Onboard Buzzer Alarm when detect "CPU
Overheat".
- Automatically slow down CPU speed when "CPU
FAN Failure" or "CPU Overheat".
· COP OCESSO - Included in Pentium processor.
· SPEED - 66 MHz system speed.
- 33 PCI-Bus speed.
- 8 MHz AT bus speed.
· D AM MEMO Y - 3 banks 72 pins SIMM module socket on board.
- Use 4 / 8 / 16 / 32 / 64 /128 MB 60~70 ns SIMM
module D AM.
- 8 ~ 768 MB D AM size.
- Support Fast Page / EDO D AM access mode.
· CACHE MEMO Y - 32 KB 1st cache memory included in CPU.
- 256KB/512 KB 2nd cache in CPU.
- Support Write Back cache mode for L1/L2 Cache.
· I/O BUS SLOTS - 5 Master / Slave PCI-BUS.
- 3 16 bits ISA BUS.
· IDE PO TS - 2 Enhanced IDE channels on board.(Using
I Q14,15)
- Support Mode 3,4 IDE & ATAPI CD - OM.
· I/O PO TS - Supports 2 16550 COM ports. (Using I Q4, 3)
- Supports 1 EPP/ECP LPT port. (Using I Q7 or 5
and DMA3 or 1)
- Supports 1 1.44/2.88 MB Floppy port. (Using DMA2
2-1

Specification
& I Q6)
- Supports 2 USB ports.
- Supports PS/2 Mouse. (Using I Q12 )
- Supports PS/2 Keyboard. (Using I Q1 )
· G EEN FUNCTION - Standby & Suspend mode support.
- Green switch & LED support.
- IDE & Display power down support.
- Monitor all I Q / DMA / Display / I/O events.
· BIOS - 128KB FLASH EEP OM.
- Supports Plug & Play Function.
· DIMENSION - ATX Form Factor, 4 layers PCB.
2.2. SOFTWARE
· BIOS - Licensed AWA D 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).
· elative 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.
2-2

GA-686KX
3. HARDWARE INSTALLATION
3.1. UNPACKING
The mainboard package should contain the following:
·The GA-686KX mainboard.
·The etention Mechanism & Attach Mount
·USE 'S MANUAL for mainboard.
·Cable set for IDE & Floppy device.
·Diskette for BUS MASTE ATAPI device.
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.
MDO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN DAMAGED.
You are now ready to install your mainboard. The mounting hole pattern on
the mainboard matches the ATX system board. It is assumed that the chassis
is designed for a standard ATX mainboard mounting.
Place the chassis on the anti-static mat and remove the cover. Take the clips,
stand-off and screws for mounting the system board, and keep them
3-1

Hardware Installation
separate.
3.2. MAINBOARD LAYOUT
S1
1 2 3 4
ON
OFF
DIP SWITCH
PCI4 PCI3 PCI2
FLOPPYCN7
CN6
CN8
GA-686KX
IDE2
IDE1
SLOT6 SLOT4SLOT8
1 72
LPT
K.B.
Mouse
CN1
J3 J4 J5 J6 J7 J8 J10
1 1 1 1
+ + +
1
J9
COMBCOMA CN3
CN5
CN4
PCI1PCI5
POWE 1
BIOS
K.B. controller
J1
1
SIMM6
SIMM1
POWE 2
USB
CN2
J2
SLOT1
Bank 1
Bank 2
Bank 0
2
3
Figure 3.1
3.3. QUICK REFERENCE FOR JUMPERS &
CONNECTORS
tCN1-8 I/O Ports Connector
CN1 For Serial port1(COM A).
CN2 For LPT port.
CN3 For Serial port2 (COM B).
CN4 For Keyboard I/O port.
CN4 For PS/2 Mouse port.
CN5 USB port.
CN6 For Secondary IDE port.
CN7 For Primary IDE port.
3-2

GA-686KX
CN8 For Floppy port
tJ1: CPU cooling FAN Power Connector
Pin No. Function
1 GND.
2 +12V
3 SENSE
tJ2: slot1
For Pentium II processor installed.
tJ3: SPEAKE Connector
Pin No. Function
1 VCC
2 NC.
3 NC.
4 Output
tJ4: ESET Switch
Pin No. Function
1 ESET Input
2 GND
tJ5: POWE ON LED (PW-LED)
Pin No. Function
1 LED POWE (+)
2 NC
3 GND (-)
tJ6: Hard Disk active LED (HD-LED)
Pin No. Function
1 LED POWE (+)
2 LED POWE (-)
3 NC
4 LED POWE (+)
tJ7: INF A ED Connector (I ) -- Function Option
Pin No. Function
1 I Data Output
2 GND
3 I Data Input
4 NC
5 POWE (+)
3-3

Hardware Installation
tJ8: eserved
tJ9: ATX Power On/Off
Pin No. Function
Close &
Open
This is the soft switch (Power On/Off) of ATX Power Supply,
Close & Open one time to Power On & again to Power Off.
tJ10: GN-LED
Pin No. Function
1 LED anode (+).
2 LED cathode (-).
tS1: CPU INT. / EXT. F EQ. ATIO
CPU TYPE 1 2 3 4 CLK ATIO
200MHz OFF ON OFF OFF X3
233MHz ON ON OFF OFF X3.5
266MHz OFF OFF ON OFF X4
300MHz ON OFF ON OFF X4.5
333MHz OFF ON ON OFF X5
366MHz ON ON ON OFF X5.5
tPower1: PS/2 POWE connector
Pin No. Function
1 Power Good signal
2,10,11,12 VCC (+5V)
3 +12V
4 -12V
5,6,7,8 GND
9 -5V
tPower2: ATX POWE connector
Pin No. Function
3,5,7,13,15-
17
GND
4,6,19,20 VCC (+5V)
10 +12V
12 -12V
18 -5V
8 Power Good
9 5V SB (Stand by +5V)
14 PS-ON (Soft ON/OFF)
3.4. DRAM INSTALLATION
The mainboard can be installed with 4 / 8 / 16 / 32 / 64 / 128 MB 72 pins
3-4

GA-686KX
SIMM module D AM, and the D AM speed must be 60 or 70 ns. The D AM
memory system on mainboard consists of bank 0, 1 & bank 2. Each bank
consist of 2 PCs 72 pins SIMM module D AM. Because the 72 pins SIMM
module is 32 bits width, using 2 PCs which can match a 64 bits system. The
total memory size is 8 - 768 MB.
The D AM installation position refer to Figure 3.1, and notice the Pin 1 of
SIMM module must match with the Pin 1 of SIMM socket when the D AM
SIMM module is installed. Insert the D AM SIMM module into the SIMM
socket at 45 degree angle. If there is a wrong direction of Pin 1, the D AM
SIMM module couldn't be inserted into socket completely.
After completely insert SIMM module into socket, then press the SIMM
module in vertical direction until the left and right metal holders can keep the
SIMM module standing up con-firmly.
3.5. CPU SPEED SETUP
The system's speed is fixed to 66.6MHz. The user can change the DIP
SWITCH (S1) selection to set up the CPU speed for 233 -
366MHz processor. The CPU speed must match with the
frequency RATIO. It will cause system hanging up if the
frequency RATIO is higher than CPU's.
DIP SWITCH (S1) F EQ. EXT.CLK. INT.CLK. CPU Type
1 2 3 4 ATIO MHz MHz
OFF ON OFF OFF 3 66 200 Pentium II 200 MHz
ON ON OFF OFF 3.5 66 233 Pentium II 233 MHz
OFF OFF ON OFF 4 66 266 Pentium II 266 MHz
ON OFF ON OFF 4.5 66 300 Pentium II 300 MHz
OFF ON ON OFF 5 66 333 Pentium II 333 MHz
ON ON ON OFF 5.5 66 366 Pentium II 366 MHz
MThe 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 mainboard.
3-5

Hardware Installation
3.6. CMOS RTC & ISA CFG CMOS SRAM
There're TC & CMOS S AM on board, they have a power supply from
internal battery to keep the DATA inviolate & effective. The TC is a EAL-
TIME CLOCK device which provides the DATE & TIME to system.
The CMOS S AM is used for keeping the information of ISA device system
configuration, so the system can automatically boot OS. every time.
Due to the life-time of TC internal battery is 5 years, the user can change a
new TC to replace old one after it can not work. The new one's brand and
type must be same with old one.
3.7. SPEAKER CONNECTOR INSTALLATION
There is always a speaker in AT system for sound purpose. The 4-Pins
connector J3 is used to connect speaker.
The speaker can work well in both direction of connector when it is installed
to the connector J3 on mainboard.
3.8. HARDWARE RESET SWITCH CONNECTOR INSTALLATION
The ESET switch on panel provides users with HA DWA E ESET
function which is almost the same as power-on/off.
The system will do a cold start after the ESET switch is pushed and
released by user. The ESET switch is a 2 PIN connector and should be
installed to J4 on mainboard.
3.9. POWER LED CONNECTOR INSTALLATION
There are a system power LED lamp on the panel of case. The power LED
will light on when system is powered-on, which is connected to a 3 PIN
connector.
The connector should be connected to J5 of mainboard in correct direction.
3.10. GREEN LED INSTALLATION
The J8 is a indicator (green LED) for green function. If the green LED is ON,
the system is operating in green mode.
3-6

GA-686KX
3.11. IDE & ATAPI DE ICE INSTALLATION
There are two Enhance PCI IDE ports (CN6,7) on board, which following
ATAPI standard SPEC. Any one IDE port can connected to two ATAPI
devices (IDE Hard Disk, CD- OM & Tape Driver), so total four ATAPI devices
can exist in a system.
The booting Hard Disk should be the Master device of 1st IDE channel. The
J6 is the active LED port for ATAPI device.
3.12. PERIPHERAL DE ICE 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 five PCI -
Bus slots can be used.
3.13. KEYBOARD & PS/2 MOUSE INSTALLATION
The main board supports PS/2 connector type keyboard & Mouse (CN4).
The BIOS will auto detect whether the PS/2 Mouse is installed or nor &
assign I Q12 for Mouse port if which was installed.
After installing the peripheral device, the user should check everything again,
and prepare to power-on the system.
3.14. KEYBOARD SETTING FUNCTION
After booting the O.S., there are some special functions used by keyboard as
follows:
"CT L_ALT_DEL" - Pressing these keys simultaneously will cause
system to Warm Start (Software eset).
3-7

BIOS Configuration
4. BIOS CONFIGURATION
Award's BIOS OM has a built-in Setup program that allows users to modify
the basic system configuration.
This type of information is stored in battery-backed CMOS S AM so that it
retains the Setup information when the power is turned off.
4.1. ENTERING SETUP
Power ON the computer and press <Del> immediately will allow you to enter
Setup.
The other way to enter Setup is to power on the computer, when the below
message appears briefly at the bottom of the screen during the POST
(PowerOnSelfTest), press<Del>key or simultaneously press<Ctrl>,<Alt>,
and <Esc> keys.
 TO ENTER SETUP BEFORE BOOT PRESS CTRL-ALT-ESC OR DEL KEY
If the message disappears before you respond and you still wish to enter
Setup, restart the system to try again by turning it OFF then ON or pressing
the " ESET" bottom on the system case.
You may also restart by simultaneously press <Ctrl>,<Alt>,and<Del> keys.
If you do not press the keys at the correct time and the system does not boot,
an error message will be displayed and you will again be asked to,
 PRESS F1 TO CONTINUE, CTRL-ALT-ESC OR DEL TO ENTER SETUP
4-1

GA-686KX
4.2. CONTROL KEYS
Up arrow Move to previous item
Down arrow Move to next item
Left arrow Move to the item in the left hand
ight 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
F1 key General help, only for Status Page Setup Menu and Option
Page Setup Menu
F2 key Change color from total 16 colors
F3 key Calendar, only for Status Page Setup Menu
F4 key eserved
F5 key estore 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 default
F8 key eserved
F9 key eserved
F10 key Save all the CMOS changes, only for Main Menu
4.3. GETTING HELP
4-2