Gigabyte GA-686KDX User manual

GA - 686KDX
USER'S MANUAL
Dual Pentiumâ II Processor MAIN OARD
REV. 1 Second Edition

GA-686KDX
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.
ULY 08, 1997 Taipei, Taiwan
TA LE OF CONTENTS
1. INTRODUCTION..................................................................................................1-1
2

Table of Contents
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 Pentiumâ II Processor................................................1-4
2. SPECIFICATION..................................................................................................2-1
2.1. HARDWARE...................................................................................................2-1
2.2. SOFTWARE...................................................................................................2-2
2.3. ENVIRONMENT............................................................................................2-2
3. HARDWARE INSTALLATION...........................................................................3-1
3.1. UNPACKING..................................................................................................3-1
3.2. MAINBOARD LAYOUT.................................................................................3-2
3.3. QUICK REFERENCE FOR UMPERS & CONNECTORS....................3-2
3.4. DRAM INSTALLATION.................................................................................3-5
3.5. CPU SPEED SETUP....................................................................................3-5
3.6. CMOS RTC & ISA CFG CMOS SRAM......................................................3-6
3.7. SPEAKER CONNECTOR INSTALLATION...............................................3-6
3.8. HARDWARE RESET SWITCH CONNECTOR INSTALLATION............3-6
3.9. POWER LED CONNECTOR INSTALLATION..........................................3-6
3.10. GREEN LED INSTALLATION....................................................................3-6
3.11. IDE & ATAPI DEVICE INSTALLATION.....................................................3-7
3.12. PERIPHERAL DEVICE INSTALLATION..................................................3-7
3.13. KEYBOARD & PS/2 MOUSE INSTALLATION.......................................3-7
3.14. KEYBOARD SETTING FUNCTION.........................................................3-7
4. IOS CONFIGURATION....................................................................................4-1
4.1. ENTERING SETUP.......................................................................................4-1
4.2. CONTROL KEYS...........................................................................................4-2
4.3. GETTING HELP.............................................................................................4-3
4.3.1. Main Menu..........................................................................................4-3
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GA-686KDX
4.3.2. Status Page Setup Menu / Option Page Setup Menu.................4-3
4.4. THE MAIN MENU..........................................................................................4-3
4.5. STANDARD CMOS SETUP MENU............................................................4-5
4.6. BIOS FEATURES SETUP............................................................................4-9
4.7. CHIPSET FEATURES SETUP..................................................................4-13
4.8. POWER MANAGEMENT SETUP............................................................4-15
4.9. PNP/PCI CONFIGURATION.....................................................................4-17
4.10. INTEGRATED PERIPHERALS...............................................................4-18
4.11. LOAD SETUP DEFAULTS.......................................................................4-22
4.12. USER PASSWORD..................................................................................4-23
4.13. IDE HDD AUTO DETECTION.................................................................4-24
4.14. HDD LOW LEVEL FORMAT...................................................................4-24
4.15. SAVE & EXIT SETUP...............................................................................4-25
4.16. EXIT WITHOUT SAVING.........................................................................4-27
5. AT TECHNICAL INFORMATION......................................................................5-1
5.1. I/O BUS CONNECTOR PIN OUT...............................................................5-1
5.1.1. ISA SLOT PIN OUT...........................................................................5-1
5.1.2. PCI - BUS SLOT PIN OUT..............................................................5-2
5.2. I/O & MEMORY MAP....................................................................................5-3
5.3. TIMER & DMA CHANNELS MAP...............................................................5-3
5.4. INTERRUPT MAP.........................................................................................5-4
5.5. RTC & CMOS RAM MAP.............................................................................5-5
APPENDIX A: POST MESSAGE.........................................................................A-1
APPENDIX : POST CODES............................................................................... -1
APPENDIX C: IOS DEFAULT DRIVE TA LE.................................................C-1
APPENDIX D: PRO LEM SHEET.......................................................................D-1
APPENDIX E: FCC DOCUMENT.........................................................................E-1
4

Introduction
1. INTRODUCTION
1.1. PREFACE
Welcome to use the GA-686KDX motherboard. The motherboard is a Dual
Pentiumâ 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 CONFIGURATION with BIOS SETUP program.
1.2. KEY FEATURES
qIntel Pentiumâ II Processor based PC / AT compatible mainboard.
qDual slot 1 on board supports dual Pentiumâ 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 DRAM 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 AWARD BIOS, FLASH EEPROM for BIOS update.
qATX form factor, 4 layers PCB.
1-1

GA-686KDX
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 Pentiumâ II processor
·DRAM 32 MB EDO
·CACHE SIZE 512 KB included in CPU
·DISPLAY Matrox Millennium 2MB
·STORAGE Onboard IDE port + Quantum FB 1280AT IDE Drive
·O.S. Windows95 with Display Driver at 1024 x 768 x 256
colors x 75Hz & BusMaster IDE Driver.
Processor Intel Pentiumâ 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. LOCK DIAGRAM
1-3

GA-686KDX
1-4

Introduction
1.5. INTRODUCE THE Pentiumâ II Processor
Figure 1:Retention Mechanism & attach Mount
1-5

GA-686KDX
Figure 2:OEM Pentiumâ II Processor
Figure 3:Heatsink / FAN & Heat sink support for OEM Pentiumâ II Processor
1-6

Introduction
Figure 4:Boxed Pentiumâ II Processor & Heat sink support
1-7

GA-686KDX
2. SPECIFICATION
2.1. HARDWARE
· CPU - Dual Pentiumâ II processor 233 - 333 MHz.
- Dual 242 pins slot1 on board.
· PROTECTION - 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".
· COPROCESSOR - Included in Pentiumâ processor.
· SPEED - 66 MHz system speed.
- 33 PCI-Bus speed.
- 8 MHz AT bus speed.
· DRAM MEMORY - 3 banks 72 pins SIMM module socket on board.
- Use 4 / 8 / 16 / 32 / 64 /128 MB 60~70 ns SIMM
module DRAM.
- 8 ~ 768 MB DRAM size.
- Support Fast Page / EDO DRAM access mode.
· CACHE MEMORY - 32 KB 1st cache 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 PORTS - 2 Enhanced IDE channels on board.(Using
IRQ14,15)
- Support Mode 3,4 IDE & ATAPI CD - ROM.
· I/O PORTS - Supports 2 16550 COM ports. (Using IRQ4, 3)
- Supports 1 EPP/ECP LPT port. (Using IRQ7 or 5
and DMA3 or 1)
2-1

Specification
- Supports 1 1.44/2.88 MB Floppy port. (Using DMA2
& IRQ6)
- Supports 2 USB ports.
- Supports PS/2 Mouse. (Using IRQ12 )
- Supports PS/2 Keyboard. (Using IRQ1 )
· GREEN FUNCTION - Standby & Suspend mode support.
- Green switch & LED support.
- IDE & Display power down support.
- Monitor all IRQ / DMA / Display / I/O events.
· BIOS - 256KB FLASH EEPROM.
- Supports Plug & Play & DMI Function.
· DIMENSION - ATX Form Factor, 4 layers PCB.
2.2. SOFTWARE
· BIOS - Licensed AWARD BIOS.
- AT CMOS Setup, BIOS / Chipset Setup, Green
Setup, Hard Disk Utility included.
· O.S. - Operation with MS-DOSâ, Windowsâ95,
WINDOWSä 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.
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GA-686KDX
3. HARDWARE INSTALLATION
3.1. UNPACKING
The mainboard package should contain the following:
·The GA-686KDX mainboard.
·The Retention Mechanism & Attach Mount
·USER'S MANUAL for mainboard.
·Cable set for IDE & Floppy device.
·Diskette for BUS MASTER 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 OARD IF IT HAS EEN 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. MAIN OARD LAYOUT
3-2

GA-686KDX
3-3

Hardware Installation
×Figure3.1Ø
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 Floppy port
CN7 For Primary IDE port.
CN8 For Secondary IDE port.
t1,4: CPU cooling FAN Power Connector
Pin No. Function
1 GND.
2 +12V
3 SENSE
t2,3: slot1
For Pentiumâ II processor installed.
t5: SPEAKER Connector
Pin No. Function
1 VCC
2 NC.
3 NC.
4 Output
t6: RESET Switch
Pin No. Function
1 RESET Input
2 GND
t7: POWER ON LED (PW-LED)
Pin No. Function
1 LED POWER (+)
3-4

GA-686KDX
2 NC
3 GND (-)
t8: Hard Disk active LED (HD-LED)
Pin No. Function
1 LED POWER (+)
2 LED POWER (-)
3 NC
4 LED POWER (+)
t9: INFRARED Connector (IR) -- Function Option
Pin No. Function
1 IR Data Output
2 GND
3 IR Data Input
4 NC
5 POWER (+)
t10: Reserved
t11: 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.
t12: GN-LED
Pin No. Function
1 LED anode (+).
2 LED cathode (-).
tS1: CPU INT. / EXT. FREQ. RATIO
CPU TYPE 1 2 3 4 CLK RATIO
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
3-5

Hardware Installation
tPower1: ATX POWER 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
SIMM module DRAM, and the DRAM speed must be 60 or 70 ns. The DRAM
memory system on mainboard consists of bank 0, 1 & bank 2. Each bank
consist of 2 PCs 72 pins SIMM module DRAM. 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 DRAM 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 DRAM
SIMM module is installed. Insert the DRAM SIMM module into the SIMM
socket at 45 degree angle. If there is a wrong direction of Pin 1, the DRAM
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)
RATIO
EXT.CLK.
MHz
INT.CLK.
MHz CPU Type
1 2 3 4
OFF ON OFF OFF 3 66 200 Pentiumâ II 200 MHz
3-6

GA-686KDX
ON ON OFF OFF 3.5 66 233 Pentiumâ II 233 MHz
OFF OFF ON OFF 4 66 266 Pentiumâ II 266 MHz
ON OFF ON OFF 4.5 66 300 Pentiumâ II 300 MHz
OFF ON ON OFF 5 66 333 Pentiumâ II 333 MHz
ON ON ON OFF 5.5 66 366 Pentiumâ 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.
3.6. CMOS RTC & ISA CFG CMOS SRAM
There're RTC & CMOS SRAM on board, they have a power supply from
internal 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 ISA device system
configuration, so the system can automatically boot OS. every time.
Due to the life-time of RTC internal battery is 5 years, the user can change a
new RTC 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 J5 is used to connect speaker.
The speaker can work well in both direction of connector when it is installed to
the connector J5 on mainboard.
3.8. HARDWARE RESET SWITCH CONNECTOR INSTALLATION
The RESET switch on panel provides users with HARDWARE RESET
function which is almost the same as power-on/off.
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 J6 on mainboard.
3-7