Gigabyte GA-6LA7 User manual

6LA7
1
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 INTELCeleronTM Socket 370 Processor............................1-4
1.6. What is AGP?.......................................................................................................1-4
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 ...........................................................................................3-6
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
3.10. IDE & ATAPI DEVICE INSTALLATION.............................................................3-7
3.11. PERIPHERAL DEVICE INSTALLATION...........................................................3-8
3.12. KEYBOARD & PS/2 MOUSE INSTALLATION..................................................3-8

Table Of Contents
2
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.......................................................................4-14
4.9. PNP/PCI CONFIGURATION...............................................................................4-18
4.10. LOAD BIOS DEFAULTS....................................................................................4-20
4.11. LOAD SETUP DEFAULTS. ...............................................................................4-21
4.12. INTEGRATED PERIPHERALS .........................................................................4-22
4.13. HARDWARE MONITOR....................................................................................4-25
4.14. SUPERVISOR/USER PASSWORD..................................................................4-28
4.15. IDE HDD AUTO DETECTION...........................................................................4-29
4.16. SAVE&EXIT SETUP..........................................................................................4-30
4.17. EXIT WITHOUT SAVING..................................................................................4-31

6LA7
1-1
1. INTRODUCTION
1.1. PREFACE
Welcome to use the 6LA7 motherboard. It is a CeleronTM Socket 370
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 CeleronTM Socket 370 Processor based PC / AT compatible
mainboard.
qSocket 370 Pins ZIF white socket on board.
qSupports CeleronTM Socket 370 processor running at 366-566 MHz.
qIntel 440LX chipset, Supports AGP / SDRAM / Ultra DMA/33 IDE /
Keyboard and PS/2 Mouse Power On / ACPI features.
qSupports 3xDIMMs using 3.3V EDO or SDRAM DIMM module.
qSupports EDO 16MB ~ 768 MB, SDRAM 16MB~384MB 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 (EPP / ECP), 1x1.44MB Floppy port.
qSupports USB port & PS/2 Mouse/ Keyboard port.
qLicensed AMI BIOS, 2M bits FLASH RAM.
q23 cm x 22 cm Baby 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 IntelCeleronTM 366MHz Socket 370 processor
•DRAM (128x 1) MB SDRAM (LGS GM72V66841CT7J)
•CACHE SIZE 128 KB included in CPU
•DISPLAY GA-630 VOODOO BANSHEE (16MB SGRAM)
•STORAGE Onboard IDE (Seagate ST34520A)
•O.S. Windows NT™4.0 SPK4
•DRIVER Display Driver at 1024 x 768 x 64 colors x 75Hz.
TRIONES Bus Master IDE Driver 3.70
Processor IntelCeleronTM 366MHz Socket 370
366MHz (66x5.5)
Winbench99
CPU mark32 707
FPU Winmark 1970
Business Disk 4180
Hi-End Disk 10200
Business Graphics 175
Hi-End Graphics 330
Winstone99Business 26.7
Hi-End 24.1

6LA7
1-3
1.4. BLOCK DIAGRAM
24MHz
66MHz
3.3V EDO/SDRAM
DIMM Sockets
14.318MHz
33MHz
33MHz
66MHz
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
USB Ports
14.318MHz
48MHz
14.318MHz
I/O
CHIPSET
Winbond
83977EF
AGP
SLOT
Host Bus
PAC
82443LX
CHIPSET
PIIX4
82371EB
CHIPSET
52C64-05 / 25
52C64-06
66MHz
PGA 370
DRAM Bus

Introduction
1-4
1.5. INTRODUCE THE INTEL

CeleronTM Socket 370 Processor
Figure 1: INTELCeleronTM Socket370 Processor
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.

6LA7
2-1
2. SPECIFICATION
2.1. HARDWARE
•CPU −CeleronTM Socket 370 processor 366–566 MHz.
−66MHz Socket 370 on board.
•SPEED −66 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 16 / 32 / 64 / 128 / 256 MB DIMM module
DRAM.
−Supports EDO 16MB ~ 768 MB,
SDRAM 16MB~384MB.
−Supports 3.3V SDRAM / EDO type DRAM.
−Supports ECC or Non-ECC type DRAM.
•CACHE MEMORY −32 KB 1st cache memory included in CPU.
−128KB 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)
−Supports 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 & Keyboard.

Specification
2-2
•GREEN FUNCTION −Suspend mode support.
−Green switch & ACPI LED support.
−IDE & Display power down support.
−Monitors all IRQ / DMA / Display / I/O events.
•BIOS −2M bits FLASH RAM.
−Supports Plug & Play, DMI Function.
•DIMENSION −Baby AT Form Factor, 4 layers PCB.
2.2. SOFTWARE
•DRIVER −Bus Master IDE Driver.
−Suspend to HD utility.
−SIV.
−Intel PATCH95.
•BIOS −Licensed AMI 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.)

6LA7
3-1
3. HARDWARE INSTALLATION
3.1. UNPACKING
The mainboard package should contain the following:
•The 6LA7 main board.
•USER'S MANUAL for main board.
•Cable set for IDE, Floppy & I/O devices.
•CD for main board Utility. (Bus Master IDE Driver, Suspend to HDD, SIV,
Patch 95)
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.

Hardware Installation
3-2
3.2. MAINBOARD LAYOUT
PIIX4E
6LA7
Intel
440LX
CPU
BIOS
Floppy
IDE 1
IDE 2
BANK 1
BANK 2
LPT
COM B COM A
PS/2
Mouse
K.B.
BAT 1
JP1
CPU
FAN
USB
RING PWR ON
WAKE ON LAN
SB-
LINK
SYS
FAN
AGP
PCI 1
PCI 2
PCI 3
PCI 4
ISA 1
ISA 2
SW
JP10
PWR
FAN
IR
PWR
SPKR
TD
TB
RST
HD
SOFT PWR
JP9
×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 AT Keyboard port.
PS/2 For PS/2 Mouse port.
FLOPPY For Floppy port.
COMB For Serial port2 (COM B){Support Modem Ring On}.
COMA For Serial port1 (COM A){Support Modem Ring On}.
LPT For LPT port.
ATX Power For ATX Power Connector.
Power For Power Connector.
tSocket 370
For CeleronTM Processor Socket 370 installed

6LA7
3-3
tIR : INFRARED Connector (IR) -- Function Option
Pin No. Function
1IR Data Output
2GND
3IR Data Input
4Signal
5POWER (+)
tPWR : POWER ON LED ( PW-LED)
Pin No. Function
1LED POWER (+)
2LED POWER (−)
3LED POWER (−)
tSPK : SPEAKER Connector
Pin No. Function
1VCC
2NC.
3NC.
4Signal
tTD : Turbo LED Connector
Pin No. Function
1LED POWER (+)
2LED POWER (−)
tTB : Turbo Switch Connector
Pin No. Function
1SIGNAL
2GND
tRST : RESET Switch
Pin No. Function
Open Normal Operation
Short Reset Hardware System
tGD : Green LED Connector
Pin No. Function
1GREEN LED (+)
2GREEN LED (−)

Hardware Installation
3-4
tGN : GN-SW
Pin No. Function
Open Normal Operation
Short Entering Green Mode
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
tCPU FAN : CPU cooling FAN Power Connector
Pin No. Function
1GND.
2+12V
3SENSE
tPower FAN: Power FAN Connector
Pin No. Function
1GND.
2+12V
3SENSE
tSystem FAN: System FAN Connector
Pin No. Function
1GND.
2+12V
3SENSE
tRING PWR ON
Pin No. Function
1Signal
2GND

6LA7
3-5
tJP1 : Keyboard Power On Selection
Pin No. Function
1-2 Enabled Keyboard power on.
2-3 Disabled Keyboard power on(Default).
tJP10 : CLEAR CMOS
Pin No. Function
1-2 Normal Operation (Default)
2-3 CLEAR CMOS
tWake 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
3.4. DRAM INSTALLATION
The main board can be installed with 16 / 32 / 64 / 128 / 256 MB 168 pins
DIMM module DRAM, and the DRAM speed must be 50 or 60 ns for EDO &
67MHz for SDRAM when system bus speed is set to 66MHz. The DRAM
memory system on main board consists of bank 0,1 and 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 EDO 16MB ~
768 MB, SDRAM 16MB~384MB. 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.

Hardware Installation
3-6
3.5. CPU SPEED SETUP
The system bus speed can be set to 66MHz form the jumper (JP4,JP5,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 frequency RATIO and FSB Speed do not match with the
CPU.
DIP SWITCH (SW)
CPU FREQ.
RATIO SW1 SW2 SW3 SW4
X 3 ON OFF ON ON
X 3.5 OFF OFF ON ON
X 4 ON ON OFF ON
X 4.5 OFF ON OFF ON
X 5 ON OFF OFF ON
X 5.5 OFF OFF OFF ON
X 6 ON ON ON OFF
X 6.5 OFF ON ON OFF
X 7 ON OFF ON OFF
X 7.5 OFF OFF ON OFF
X 8 ON ON OFF OFF
X 8.5 OFF ON OFF OFF
MJP4, JP5, JP6 (Select the system speed¡Ð66 / 75 / 83 MHz )
MAIN CLOCK JP6 JP5 JP4
66MHz 1-2 1-2 1-2
75MHz 1-2 2-3 1-2
83MHz 2-3 1-2 2-3
M We don’t recommend you to setup your system speed to 75or 83MHz
because these frequencies are not the standard specifications for
CPU, Chipset and most of the peripherals. Whether your system can
run under 75 or 83MHz properly will depend on your hardware
configurations: CPU, SDRAM, Cards, etc.

6LA7
3-7
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
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 a 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.

Hardware Installation
3-8
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.