Gigabyte GA-5AA User manual

5AA
1
TABLE OF CONTENTS
1. INTRODUCTION
1.1. PREFACE................................................................................. 1-1
1.2. KEY FEATURES....................................................................... 1-1
1.3. PERFORMANCE LIST .............................................................. 1-3
1.4. BLOCK DIAGRAM..................................................................... 1-4
1.5. INTRODUCE THE PCI - BUS.................................................... 1-5
1.6. FEATURES............................................................................... 1-5
1.7. 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. SRAM INSTALLATION DRAM INSTALLATION.......................... 3-5
3.5. DRAM INSTALLATION.............................................................. 3-5
3.6. CPU INSTALLATION AND JUMPERS SETUP........................... 3-5
3.7. CMOS RTC & ISA CFG CMOS SRAM....................................... 3-7
3.8. SPEAKER CONNECTOR INSTALLATION................................. 3-7
3.9. ACPI LED CONNECTOR INSTALLATION................................. 3-7
3.10. HARDWARE RESET SWITCH CONNECTOR INSTALLATION.3-7

Table Of Contents
2
3.11. GREEN FUNCTION INSTALLATION....................................... 3-8
3.12. PERIPHERAL DEVICE INSTALLATION................................... 3-8
4. BIOS CONFIGURATION
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
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.............................................. 4-17
4.9. PNP/PCI CONFIGURATION...................................................... 4-21
4.10. LOAD BIOS DEFAULTS.......................................................... 4- 25
4.11. LOAD SETUP DEFAULTS....................................................... 4- 26
4.12. INTEGRATED PERIPHERALS ................................................ 4- 27
4.13. SUPERVISOR / USER PASSWORD....................................... 4- 31
4.14. IDE HDD AUTO DETECTION.................................................. 4- 32
4.15. SAVE & EXIT SETUP.............................................................. 4- 33
4.16. EXIT WITHOUT SAVING ........................................................ 4- 34
A.Trobuleshooting............................................................................ 5-1

5AA
1-1
1. INTRODUCTION
1.1. PREFACE
Welcome to use the 5AA motherboard. The motherboard is a Pipeline 512 KB
CACHE Pentium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 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
qPentiumProcessor based PC / AT compatible mainboard with PCI / ISA / AGP
Bus.
q3 PCI Bus slots, 2 ISA Bus slots, 1 AGP slot.
qSupports :
•PentiumProcessor :133/166/200 MHz; MMX (166 / 200 / 233)
•AMD :K6-(166 / 200 / 233 / 266 / 300)
K6-2(266 / 300 / 333 / 350 / 366 / 380 / 400 / 450 /
475 / 500 )
K6-III(400 / 450 / 475 / 500)
•Cyrix/IBM :6x86MX (PR166 / PR200 / PR233 / PR266) ;
M¢º-PR300 / PR333 / PR366 / PR400
•IDT :Winchip II-(200 / 225 / 233 / 266 / 300)
qSupports true 64 bits CACHE and DRAM access mode.
qSupports 321 Pins (Socket 7) ZIF white socket on board.
qSupports 512 KB Pipeline Burst Sync. 2nd Level Cache.
qCPU L1 / L2 Write-Back cache operation.
qSupports 16 ~ 256 MB DRAM memory on board.
qSupports 3*168 pin 64/72 Bit DIMM module.

Introduction
1-2
qSupports 2-channel Enhanced PCI IDE ports for 4 IDE Devices.
qSupports 2*COM (16550), 1*LPT (EPP / ECP), 1*1.44MB Floppy port.
qSupports Green function, Plug & Play function.
qLicensed AMI BIOS, FLASH RAM for BIOS update.
q22cm*21cm, Baby AT Form factor.
qSupports USB port & PS/2 Mouse and K/B port.
qSupports Keyboard Power On/Off.

5AA
1-3
1.3. PERFORMANCE LIST
The following list of performance data 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Processor MMX-233 MHz , Cyrix 6x86M2-
PR333 , AMD K6-2 400, IDT Winchip 225MHz
•DRAM(128 × 1) MB SDRAM (LGS GM72V66841CT7J)
•CACHE SIZE 512 KB
•DISPLAY GA-600 (4MB SGRAM)
•STORAGE Onboard IDE (IBM DHEA-36481)
•O.S. Windows® NT 4.0
•DRIVER Display Driver at 1024 x 768 x 256 colors x 75Hz.
ALi Bus Master IDE Driver
Processor Intel-MMX
233MHz
(66x3.5)
AMD
K6-2 400
(100x4)
Cyrix MII
PR333
(83x3 )
IDT Winchip
225MHz
(75x3 )
Winbench98
CPU mark32 471 865 598 470
FPU Winmark 915 1300 573 639
Business Disk 1790 1860 1860 1750
Hi-End Disk 4120 4390 4450 4180
Business
Graphics 109 175 153 115
Hi-End Graphics 114 180 171 120
Winstone98
Business 22.8 30.4 27.2 22.2
Hi-End 23.8 31.3 28.1 23

Introduction
1-4
1.4. BLOCK DIAGRAM
CPU
PBSRAM
AGP
DEVICE
Host
Address
Host Data
Bus
ISA Bus
MD Bus
ALi M1543C
ALi M1542
DRAM
MA Bus
100MHz
33MHz
33MHz
33MHz
48MHz
14.318MH
z
PCI
Device
PCI
Device
PCI
Device
PCI Bus
ISA
Device
ISA
Device
COMA
COMB
LPT FDD
PS/2
GPIO
USB
100MHz
66MHz
14.318Hz
8MHz
100MHz
14.318Hz
66MHz
Mouse
Keyboard
IDE
DEVICE
66MHz
100MHz
100MHz
ICS9148
AF-75

5AA
1-5
1.5. INTRODUCE THE PCI - BUS
Connecting devices to a CPU local bus can dramatically increase the speed of I/O-
bound peripherals with only a slight increase in cost over traditional systems.
This price / Performance point has created a vast market potential for local bus
products.
The main barrier to this market has been the lack of an accepted standard for local
bus peripherals.
Many mainboard and chipset manufactures developed their own local bus
implementations, but they are incompatible with each other.
The VL (Video Electronics Standards Association) local bus and PCI (Peripheral
Component Interconnect) bus specification was created to end this confusion.
The PCI - bus standard, under development since Jun. 1992, which is designed to
bring workstation-level performance to standard PC platform. The PCI - bus
removes many of the bottlenecks that have hampered PC for several years.
On the PCI - bus, peripherals operate at the native speed of the computer system,
thus enabling data transfer between peripherals and the system at maximum speed.
This performance is critical for bandwidth-constrained devices such as video,
multimedia, mass storage, and networking adapters.
PCI - bus standard provides end-users with a low-cost, extendible and portable local
bus design, which will allow system and peripherals from different manufactures to
work together.
1.6. FEATURES
q32 bits bus transfer mode.
qBus Master or Slave access.
qMemory burst transfer to 132 MB/sec.
q33 MHz operation speed.
q10 device loading ability.
qCPU independent.

Introduction
1-6
1.7. 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 further speed the transaction.

5AA
2-1
2. SPECIFICATION
2.1. HARDWARE
•CPU −PentiumProcessor
133 / 166 / 200 MHz ; MMX(166 / 200 / 233)
−AMD
K6 (166 / 200 / 233 / 266 / 300)
K6-2 (266 / 300 / 333 / 350 / 366 / 380 / 400 / 450
/ 475 / 500)
K6-III (400 / 450 / 475 / 500)
−Cyrix / IBM
6x86MX (PR166 / PR200 / PR233 / PR266)
M¢º-PR300 / PR333 / PR366 / PR400
−IDT
Winchip II-(200 / 225 / 233 / 266 / 300)
−321 pins (socket 7) ZIF white socket on board.
−1.3V-3.5V Dual Power Ready.
•COPROCESSOR −Included in processor.
•SPEED −66 / 75 / 83 / 95 /100MHz system speed.
−66 MHz AGP-Bus speed.
−33 MHz PCI-Bus speed.
−8 MHz AT bus speed.
•DRAM MEMORY −3 banks 168 pins DIMM module socket on board.
−Use 16 / 32 / 64 / 128 / 256 MB 50~60 ns DIMM
module DRAM.
−16 ~ 256 MB DRAM size.
−Supports 3.3V SDRAM / EDO type DRAM.
−Supports ECC or Non-ECC type DRAM.
•CACHE MEMORY −16 / 24 / 32 / 64KB L1cache included in CPU.
−512 KB 2nd Level cache on board.
−Supports Write Back cache function for both CPU
& on board cache.
•I/O BUS SLOTS −3 xMaster / Slave PCI-BUS Slots.
−2 x16 bits ISA BUS Slots.
−1 xAGP Slot.

Specification
2-2
•IDE PORTS −2-channel Enhanced IDE port on board.(Using
IRQ14,15)
−Supports Mode 3,4 IDE & ATAPI CD –ROM.
•I/O PORTS −Supports 2 x16550 COM ports. (Using IRQ4, 3)
−Supports 1 x EPP/ECP LPT port. (Using IRQ7 or 5
and DMA3 or 1)
−Supports 1 x 1.44/2.88 MB Floppy port. (Using
DMA2 & IRQ6)
−Supports PS/2 Mouse. (Using IRQ12 )
•GREEN FUNCTION −Suspend mode support.
−Green switch .
−IDE & Display power down support.
−Monitor all IRQ / DMA / Display / I/O events.
•BIOS −1Mbit FLASH RAM.
−Supports Plug & Play Function.
•DIMENSION −Baby AT Form Factor, 4 layers PCB.
2.2. SOFTWARE
•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.

5AA
3-1
3. HARDWARE INSTALLATION
3.1. UNPACKING
The mainboard package should contain the following:
•The 5AA mainboard.
•USER’S MANUAL for mainboard.
•Cable set for IDE ¡B Floppy ¡B I/O Port & PS/2 (Optional).
•Diskette for Mainboard Utility.
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 damage
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.
M DO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN DAMAGED.
It is assumed that the chassis is designed for a standard AT mainboard mounting.
Place the chassis on the anti-static mat and remove the cover.
Take the plastic clips, Nylon stand-off and screws for mounting the system board,
and keep them separate.

Hardware Installation
3-2
3.2. MAINBOARD LAYOUT
CPU
ALi
M1543C
5AA
SW
ALi
M1542
CPU
PW
TD
RST
GD
HD
SOFT
WAKE ON LAN
BAT 1 BIOS
ISA 2
ISA 1
PCI 1
PCI 2
PCI 3
AGP
IDE 2
LPT
COM A
COM B
USB
PS/2 Mouse
KB
POWER
JP7
JP2
JP14
BANK 0
BANK 1
BANK 2
FAN PWR
JP16
×Figure 3.1Ø
Optional :
CPU
ALi
M1543C
5AA
SW
ALi
M1542
CPU
PW
TD
RST
GD
HD
SOFT
WAKE ON LAN
BAT 1 BIOS
ISA 2
ISA 1
PCI 1
PCI 2
PCI 3
AGP
IDE 2
FLOPPY
LPT
COM A
COM B
USB
KB
POWER
JP7
BANK 0
BANK 1
BANK 2
FAN PWR
JP16
JP14
JP2
×Figure 3.2Ø

5AA
3-3
3.3. QUICK REFERENCE FOR JUMPERS & CONNECTORS
tI/O Port Connectors
IDE 1 For Primary IDE port.
IDE 2 For Secondary IDE port.
FLOPPY For Floppy port.
USB For USB port.
COM B For Serial port2 (COM B){Support Modem Ring On}.
COM A For Serial port1 (COM A).
LPT For LPT port.
PS/2 For PS/2 Mouse & Keyboard Connector.
Keyboard Keyboard connector.
Power For AT Power Connector.
ATX PWR For ATX Power Connector.
tPW : POWER ON LED ( PW-LED)
Pin Function
1VCC
2GND
3GND
4NC
5NC
tSPK : Speaker Connector
Pin Function
1VCC
2NC.
3NC.
4Signal
tTD : Turbo LED Connector
Pin Function
1LED POWER (+)
2LED POWER (−)

Hardware Installation
3-4
tTB : Turbo Switch Connector
Pin Function
1Signal
2GND
tRST : RESET Switch
Open Normal operation
Close Reset system
tGD : Green LED Connector
Pin Function
1LED anode (+)
2LED cathode (−)
tGN : GN-SW
Open Normal operation
Close Enter Green Mode
tHD : Hard Disk active LED (HD-LED)
Pin Function
1LED anode (+)
2LED cathode (−)
3LED cathode (−)
4LED anode (+)
tSoft PWR : Soft Power Switch
Open Normal operation
Close Power On/Off
tJP6: Wake on Lan
Pin Function
1+5V SB
2GND
3Signal

5AA
3-5
tFAN Power : CPU cooling FAN Power Connector
Pin Function
1GND
2+12V
3Signal
tJP7: Keyboard Power On Connector
Pin Function
1,2 Close Enabled Keyboard power on.
2,3 Close Disabled Keyboard power on.
3.4. SRAM INSTALLATION
Sync. SRAM (Pipeline Burst SRAM)
If Sync SRAM Chip is installed, it consists of Pipeline Burst 1 Pc 64 K x 64
512KByte.
3.5. DRAM INSTALLATION
The mainboard can be installed with 16 / 32 / 64 / 128 / 256 MB 168 pins DIMM
module DRAM, and the DRAM speed must be 67~100 MHz for SDRAM. The DRAM
memory system on mainboard consists of bank 0, 1 & bank 2.
Because the 168 pins DIMM module is 64 bits width, using 1 PCS which can match
a 64 bits system. The total memory size is 16 MB ~ 256 MB DRAM. 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 couldn't be inserted into socket completely.
3.6. CPU INSTALLATION AND JUMPERS SETUP
The system speed depends on the frequency of CLOCK GENERATOR. The user
can change SW selection to set up the system speed to 66 / 75 /83 /95 100MHz for
3.3V/2.5V PentiumProcessor (133 / 166 / 200 MHz) ;MMX(166 / 200 / 233 MHZ) ,
AMD K6-(166 / 200 / 233 / 266 / 300 ; K6-2(266 / 300 / 333 / 350 / 366 / 380 / 400 /

Hardware Installation
3-6
450 / 475 / 500) ; K6-III(400 / 450 / 475 / 500) , Cyrix / IBM 6x86MX (PR166 /
PR200 / PR233 / PR266 ) ; M¢º- PR300 / PR333 / PR366 / PR400 , IDT Winchip
II-(200 / 225 / 233 / 266 / 300).
The mainboard can use PentiumProcessor, MMX , AMD-K6, AMD-K6-2, AMD-K6-
III, Cyrix / IBM 6x86MX, Cyrix M¢º, IDT Winchip II CPU, and the CPU speed must
match with the frequency of CLOCK GEN. It will cause system hanging up if the
CLOCK GEN.'S frequency is faster than CPU's.
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 mainboard.
M When the user installs the CPU on socket, please notice that the PIN 1 of
CPU is in the same corner as the PIN 1 of socket!
MBefore the CPU is installed, the mainboard must be placed on a flat plane
in order to avoid being broken by the pressure of CPU installation.
O: ON
X: OFF
SW 45678SW 45678
1.3V XXXXO2.5V OXOX X
1.4V XOX X O2.6V XO O X X
1.5V X X OXO2.7V O O O X X
1.6V XO O XO2.8V X X X OX
1.7V XXXO O 2.9V OX X OX
1.8V XOXO O 3.0V XOXOX
1.9V X X OOO3.1V O O XOX
2.0V XOOOO3.2V X X O O X
2.1V OXXXX3.3V OXO O X
2.2V XOXXX3.4V XOOOX
2.3V O O XXX3.5V O O O O X
2.4V X X OX X --- --- --- --- --- ---
SW 1 2 3
X1.5 X X X
X2 OX X
X2.5 O O X
X3 XOX
X3.5 X X X
X4 OXO
X4.5 O O O
X5 XO O

5AA
3-7
X5.5 X X O
JP2 JP1 JP14 JP16 MHz
2-3 2-3 2-3 X66M
1-2 2-3 2-3 O75M
1-2 2-3 2-3 X83M
1-2 1-2 2-3 O95M
1-2 1-2 2-3 X100M
1-2 1-2 1-2 X105M
1-2 1-2 1-2 O110M
1-2 2-3 1-2 X115M
1-2 2-3 1-2 O120M
2-3 1-2 1-2 X125M
2-3 1-2 1-2 O130M
2-3 2-3 1-2 X135M
2-3 2-3 1-2 O140M
♦Note: It’s strongly recommended that set the system speed according to your
hardware configuration: CPU, SDRAM, Cards, etc.
♦Note: If Cyrix 6x86 is being used, please check the CPU Date Code after 605.
3.7. CMOS RTC & ISA CFG CMOS SRAM
Built-in Real Time Clock (RTC) With 256B CMOS SRAM in M5819.
3.8. SPEAKER CONNECTOR INSTALLATION
There is a speaker in AT system for sound purpose. The 4 - Pins connector SPK is
used to connect speaker. The speaker can work well in both direction of connector
when it is installed to the connector SPK on mainboard.
3.9. ACPI LED CONNECTOR INSTALLATION
This mainboard uses the existing power LED as ACPI LED .The ACPI LED will light
on when system is power-on .The ACPI LED is off when the system is power-off.
The ACPI LED will blink when system is in Green mode.This connector should be
installed to ACPI LED jumper of the mainboard in correct direction.
3.10. HARDWARE RESET SWITCH CONNECTOR INSTALLATION

Hardware Installation
3-8
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 RES on mainboard.
3.11. GREEN FUNCTION INSTALLATION
There is one jumper for the purpose of power saving, GN, to indicate the power
saving function . This mainboard uses the existing power LED as ACPI LED . If the
ACPI LED is blinking, the system is in green mode. The GN switch will force the
system into green mode .
3.12. PERIPHERAL DEVICE INSTALLATION
After installation of the device and setup of the jumpers, the mainboard can be
mounted into the case and fixed by screw. To complete the mainboard installation,
the peripheral devices could be installed now. The basic system needs a display
interface card and a storage device.
If a PCI - Bus device is to be installed in the system, any one of three PCI - Bus
slots can be used for Slave or Master PCI - Bus device.
After installing the peripheral device, the user should check everything again and
prepare to power-on the system.

5AX
D-1