Jetway 845GDMR1A User Manual
845GDM/845GDML
845LDM/845LDML
USER'S MANUAL
M/B For Socket 478 Pentium 4 Processor
NO. G03-845GDM1A
Release date: June 2002
Trademark:
* Specifications and Information contained in this documentation are furnished for information use only, and are
subject to change at any time without notice, and should not be construed as a commitment by manufacturer.
TABLE OF CONTENT
USER’S NOTICE ..........................................................................................................1
MANUAL REVISION INFORMATION..........................................................................1
COOLING SOLUTIONS ..............................................................................................1
CHAPTER 1 INTRODUCTION OF 845GDM/845GDML/845LDM/845LDML MOTHERBOARD
1-1 FEATURE OF MOTHERBOARD.......................................................................... 2
1-2 SPECIFICATION ..................................................................................................... 3
1-3 PERFORMANCE LIST ...........................................................................................4
1-4 LAYOUT DIAGRAM & JUMPER SETTING ......................................................5
CHAPTER 2 HARDWARE INSTALLATION
2-1 HARDWARE INSTALLATION STEPS ................................................................7
2-2 CHECKING MOTHERBOARD'S JUMPER SETTING......................................7
2-3 INSTALL CPU ..........................................................................................................8
2-3-1 GLOSSARY ...................................................................................................8
2-3-2 ABOUT INTEL PENTIUM 4 478-PIN CPU ..............................................9
2-4 INSTALL MEMORY ............................................................................................... 10
2-5 EXPANSION CARD .................................................................................................10
2-5-1 PROCEDURE FOR EXPANSION CARD INSTALLATION ..................11
2-5-2 ASSIGNING IRQ FOR EXPANSION CARD ............................................11
2-5-3 INTERRUPT REQUEST TABLE FOR THIS MOTHERBOARD.......... 11
2-5-4 AGP SLOT .....................................................................................................12
2-6 CONNECTORS, HEADERS.................................................................................... 13
2-6-1 CONNECTORS .............................................................................................13
2-6-2 HEADERS ......................................................................................................16
2-7 STARTING UP YOUR COMPUTER..................................................................... 19
CHAPTER 3 INTRODUCING BIOS
3-1 ENTERING SETUP.................................................................................................. 20
3-2 GETTING HELP....................................................................................................... 20
3-3 THE MAIN MENU ...................................................................................................21
3-4 STANDARD CMOS FEATURES............................................................................ 22
3-5 ADVANCED BIOS FEATURES .............................................................................23
3-6 ADVANCED CHIPSET FEATURES ..................................................................... 25
3-6-1 DRAM TIMING SETTINGS .......................................................................26
3-7 INTEGRATED PERIPHERALS............................................................................. 27
3-7-1 ONBOARD IDE FUNCTION ......................................................................27
3-7-2 ONBOARD DEVICE FUNCTION.............................................................. 28
3-7-3 ONBOARD SUPER IO FUNCTION .......................................................... 29
3-8 POWER MANAGEMENT SETUP .........................................................................30
3-8-1 PM TIMER RELOAD EVENTS................................................................. 31
3-9 PNP/PCI CONFIGURATION SETUP ................................................................... 31
3-9-1 IRQ RESOURCES .......................................................................................32
3-10 PC HEALTH STATUS............................................................................................ 32
3-11 MISCELLANEOUS CONTROL............................................................................33
3-12 LOAD STANDARD/OPTIMIZED DEFAULTS ..................................................34
3-13 SET SUPERVISOR/USER PASSWORD ..............................................................35
CHAPTER 4 DRIVER & FREE PROGRAM INSTALLATION
MAGIC INSTALL SUPPORTS WINDOWS 95/98/98SE/NT4.0/2000 .........................36
4-1 INF
4-2 IAA
4-3 VGA
4-4 SOUND
4-5 LAN
4-6 PC-HEALTH INTEL 845 PC-HEALTH MONITOR........................................ 42
4-7 MAGIC BIOS INSTALL BIOS LIVE UPDATE UTILITY................................ 43
4-8 PC-CILLIN INSTALL PC-CILLIN2002 ANTI-VIRUS PROGRAM........... 44
4-9 HOW TO INSTALL USB 2.0 DRIVER ..................................................................45
4-10 HOW TO DISABLE ON-BOARD SOUND............................................................ 46
4-11 HOW TO UPDATE BIOS ........................................................................................46
INSTALL INTEL 845 CHIPSET SYSTEM DRIVER
INSTALL INTEL APPLICATION ACCELERATOR SOFTWARE
INSTALL INTEL 845G VGA DRIVER
INSTALL ALC OR CMI AUDIO CODEC DRIVER
INSTALL RTL8100 LAN CONTROLLER DRIVER
i
..................................................38
.............................37
...............................38
..............................41
........37
USER’S NOTICE
COPYRIGHT OF THIS MANUAL BELONGS TO THE MANUFACTURER. NO PART OF THIS MANUAL,
INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT MAY BE REPRODUCED,
TRANSMITTED OR TRANSLATED INTO ANY LANGUAGE IN ANY FORM OR BY ANY MEANS WITHOUT
WRITTEN PERMISSION OF THE MANUFACTURER.
THIS MANUAL CONTAINS ALL INFORMATION REQUIRED TO USE 845GDM/845GDML/845LDM/
845LDML MOTHER-BOARD AND WE DO ASSURE THIS MANUAL MEETS USER’S REQUIREMENT BUT WILL
CHANGE, CORRECT ANY TIME WITHOUT NOTICE. MANUFACTURER PROVIDES THIS MANUAL “AS IS”
WITHOUT WARRANTY OF ANY KIND, AND WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTIAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMANGES FOR LOSS OF PROFIT, LOSS
OF BUSINESS, LOSS OF USE OF DATA, INTERRUPTION OF BUSINESS AND THE LIKE).
PRODUCTS AND CORPORATE NAMES APPEARING IN THIS MANUAL MAY OR MAY NOT BE
REGISTERED TRADEMARKS OR COPYRIGHTS OF THEIR RESPECTIVE COMPANIES, AND THEY ARE
USED ONLY FOR IDENTIFICATION OR EXPLANATION AND TO THE OWNER’S BENEFIT, WITHOUT
INTENT TO INFRINGE.
Manual Revision Information
Reversion Revision History Date
1.0 First Release June 2002
Item Checklist
5
845GDM/845GDML/845LDM/845LDML
5
Cable for IDE/Floppy
5
CD for motherboard utilities
□
Cable for USB Port 3/4 (Option)
5
845GDM/845GDML/845LDM/845LDML User’s Manual
Intel Pentium 4 Processor Family
Cooling Solutions
As processor technology pushes to faster speeds and higher performance, thermal management
becomes increasingly crucial when building computer systems. Maintaining the proper thermal
environment is key to reliable, long-term system operation. The overall goal in providing the proper
thermal environment is keeping the processor below its specified maximum case temperature.
Heatsinks induce improved processor heat dissipation through increased surface area and
concentrated airflow from attached fans. In addition, interface materials allow effective transfers of
heat from the processor to the heatsink. For optimum heat transfer, Intel recommends the use of
thermal grease and mounting clips to attach the heatsink to the processor.
When selecting a thermal solution for your system, please refer to the website below for collection of
heatsinks evaluated and recommended by Intel for use with Intel processors. Note, those heatsinks are
recommended for maintaining the specified Maximum T case requirement. In addition, this collection
is not intended to be a comprehensive listing of all heatsinks that support Intel processors.
For vendor list of heatsink and fan, please visit :
http://developer.intel.com/design/Pentium4/components/index
1
Chapter 1
Introduction of
845GDM/845GDML/845LDM/845LDML Motherboard
1-1 Feature of motherboard
The 845GDM/845GDML/845LDM/845LDML motherboard is design for use Intel Pentium 4
Processor in 478 Pin Package/Northwood Processor with the Intel 845G/845GL Chipset delivers
a high performance and professional desktop platform solution. Which utilize the Socket 478
design and the memory size expandable to 2.0GB.
845GDM/845GDML motherboard use the newest Intel 845G Chipset Supports 533MHz
System Bus in data transfer rate, 8445LDM/845LDML motherboard use the newest 845GL
Chipset Supports 400MHz System Bus in data transfer rate. Both motherboards provided
133MHz SDRAM clock frequency support DDR266 SDRAM. These motherboards offer
ULTRA ATA
performance.
With integrated 2D/3D Graphics Accelerator which supports 256 bit graphics core, and supports
hardware motion compensation assist for software MPEG/DVD decode, makes this board lower
cost alternative to a video card. For those wanting even greater graphic performance. In
845GDM/845GDML an AGP 4X slot is included on the board (For 1.5V AGP card only. No
for 3.3V or Universal AGP card). This AGP slot will support either a 4X VGA card or Intel
Digital Video Out ports add support for digital displays and TV-out .
The 845GDML/845LDML motherboard including PCI LAN Controller chip support 10/100
Mb/sec Base transfer rate.
These motherboards also has an integrated AC’97 2.1 CODEC on board support 3D surround
positioning Audio, which is fully compatible with Sound Blaster Pro that gives you the best
sound quality and compatibility.
With USB control as well as capability of expanding to 6 USB2.0 function ports to meet
future USB demand, also these motherboards built-in hardware monitor function. This will
monitor and protect your computer. These motherboards provided special design in hardware
to protect BIOS from virus crash BIOS data.
These motherboard provides special function in BIOS Setup to setting CPU Host clock step
by step increasing let users to approach over clocking.
845GDM/845GDML/845LDM/845LDML provides high performance & meets future
specification demand. It is really wise choice for your computer.
to provide speedier HDD throughout that boosts overall system
100
2
1-2 Specification
Spec Description
Design
Chipset
CPU Socket
(mPGA478B Socket)
Memory Socket
Expansion Slot &
Headers
Integrate IDE
LAN On Board
(Only for
845GDML/845LDML)
Audio
BIOS
Multi I/O
Micro ATX form factor 4 layers PCB size: 24.4x23.0cm
∗
Intel 845G Graphics Memory Controller Hub (GMCH) Chipset
∗
for 845GDM/845GDML
Intel 845GL Graphics Memory Controller Hub (GMCH)
∗
Chipset for 845LDM/845LDML
Intel 82801DB I/O Controller Hub (ICH4) Chipset
∗
Support Intel Pentium 4 478 Pin package utilizes Flip-Chip Pin
∗
Grid Array (FC-PGA2) package processor
Support CPU Frequency 400MHz & 533MHz for
∗
845GDM/845GML and 400MHz only for 845LDM/845LDML
Support 1.5G∼2.533G 478 Pin Pentium 4 processor
∗
Reserves support for future Intel Pentium 4 processors
∗
184-pin DDR SDRAM module socket x2
∗
Support DDR266/DDR200 DRAM
∗
Expandable to 2.0GB
∗
845GDM/845GDML supports AGP slot x1 for AGP 1.5V
∗
standard only, support AGP 2.0 & 4X mode
32-bit PCI slot x3
∗
CNR slot x1
∗
Two PCI IDE controllers support PCI Bus Mastering, ATA
∗
PIO/DMA and the ULTRA DMA 33/66/100 functions that
deliver the data transfer rate up to 100 MB/s
Realtek RTL8100BL PCI LAN Controller chip
∗
Supports 10/100 Mb/sec data transfer rate
∗
AC’97 Digital Audio controller integrated
∗
AC’97 2.1 Audio CODEC on board
∗
Sound Blaster Pro compliant
∗
Audio driver and utility included
∗
Award 2MB Flash ROM
∗
PS/2 keyboard and PS/2 mouse connectors
∗
Floppy disk drive connector x1
∗
Parallel port x1, Serial port x2
∗
USB 2.0 connector x2
∗
USB 2.0 headers x2 (connecting cable option)
∗
Audio connector Line-in, Line-out, MIC & Game Port
∗
1-3 Performance List
3
The following performance data list is the testing result 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.)
Performance Test Report
CPU:
DRAM:
VGA Expansion Card:
Hard Disk Driver:
BIOS:
Win 98SE
OS:
Frame Buffer
Intel Pentium 4 1.9GHz mPGAB package
256MB DDR266 SDRAM x1 (SAMSUNG K4H280838B-TCB0)
NVDIA Geforce2 MX400-64MB (1024x768 Hi-color)
IBM DTLA-305040 (ATA-100)
Award Optimal default
8M On Board
Geforce2
MX200
Geforce2
MX400
VGA
3D Mark 2000 3392 2917 5408
3D Mark 2001SE 1420 1217 2555
3D Winbench 2000 69.8 55.5 104
Final Reality 12.07 10.18 10.06
Content Creation Winstone 2000 44.6 43.8 44.5
Content Creation Winstone 2001 52.5 55.8 56.1
Content Creation Winstone 2002 19.9 20.8 20.8
Business Winstone 2001 46 46.1 46.7
Winbench 99:
CPU Mark 99 113 110 113
FPU Winmark 99 6640 6620 6620
Business Disk Winmark99 5110 5230 5230
Hi-end Disk Winmark99 17100 18800 16600
Business Graphic Winmark 375 408 438
Hi-end Graphic Winmark 1110 1260 1270
SYS Mark 2000/2001 : SISMark 2000/2001 Rating (Internet Content Creation / Office
Productivity)
SISMark 2000 211 (232/196) 215 (233/203) 216 (232/205)
SISMark 2001 156 (172/142) 151 (172/133) 154 (171/138)
SISOFT Sandra 2002 :
Dhrystone ALU MIPS 3577 3578 3582
Whetstone FPU MFLOPS 1141/2378 1149/2359 1142/2356
RAM Int Buffered iSSE2 MB/S 1900 2033 2033
RAM Float Buffered iSSE2 MB/S 1831 1947 1944
Integer SSE2 IT/S 7582 7570 7565
Floating-Point SSE2 IT/S 9200 9206 9219
QUAKE3 DEMO1 FPS 76.6 118.9 172.1
DEMO2 FPS 76.3 120.2 173.0
WCPUID System / CPU Clock 101/1918.93 101/1918.92 101/1918.93
1-4 Layout Diagram & Jumper Setting
4
PS/2 MOUSE
LAN
(for 845GDML/
845LDML)
PRINT
GAME/MIDI PORT
PS/2 Keyboard
USB
K/B Power ON
Jumper (JP1)
PS2 KB/Mouse Port
USB Port
/LAN Connector
(for 845GDML/
845LDML)
COM2 Connector
PC99 Back Panel
COM1 VGA
ATX 12V Power Conn.
MIC
LINE-IN
LINE-OUT
CPU Socket
CPU FAN
ATX P9 Power Conn.
DDR DIMM X2
ATX Power Conn.
Floppy Connector
(JP2)
CPU Frequency Select
ATA 100 IDE Conn.
Intel 845G/845GL Chip
Front Panel Audio
CD Audio
PCI Slot
Winbond 83627HF Chip
CNR Slot
IR Connector
Jumpers
Jumper Name Description Page
(USB3, USB2)
USB Port
AGP Slot
(for 845GDM/845GDML)
Wake On LAN
Intel 82801DB Chip
Clear CMOS (JP4)
SYSFAN2
Speaker
2MBit Flash ROM BIOS
Front Panel Connector
SYSFAN
5
JP2 CPU Frequency Select 3-pin Block P.7
JP4 CMOS RAM Clear 3-pin Block P.7
JP1 Keyboard Power On Enable/Disabled 3-pin Block P.8
Connectors
Connector Name Description Page
ATXPWR ATX Power Connector 20-pin Block P.13
ATX12V ATX 12V Power Connector 4-pin Block P.13
ATXP9 ATX P9 Power Connector 6-pin Block P.13
PS2 KB/MOUSE PS/2 Mouse & PS/2 Keyboard
Connector
USB USB Port Connector 4-pin Connector P.14
LAN LAN Connector RJ-45 Connector P.14
LPT Parallel Port Connector 25-pin Female P.14
VGA VGA Display Connector 15-pin Female Connector
COM1 Serial Port COM1 Connector 9-pin Connector P.14
GAME Audio/Game Connector 3 phone jack + 15-pin Connector P.14
FDD Floppy Driver Connector 34-pin Block P.15
IDE1/IDE2 Primary/Secondary IDE Connector 40-pin Block P.15
Only for 845GDML/845LDML
6-pin Female P.14
Headers
Header Name Description Page
COM2 Serial Port COM2 Header 9-pin Block P.16
AUDIO Line-In/Out, MIC header 9-pin Block P.16
USB2/USB3 USB Port Headers 9-pin Block P.16
SPEAKER Speaker Connector 4-pin Block P.17
FP
(Power LED/Reset/
IDE LED/ Power Button)
WOL Wake On-LAN Headers 3-pin Block P.17
SYSFAN, SYSFAN2,
CPUFAN
IR IR infrared module Headers 5-pin Block P.18
CDIN CD Audio-In Headers 4-pin Block P.18
Expansion Sockets
Socket/Slot Name Description Page
ZIF Socket 478 CPU Socket 478-pin mPGAB CPU Socket P.9
DDR1, DDR2 DDR Module Socket 184-pin DDR SDRAM Module
PCI1 ∼ PCI3
AGP
(for 845GDM/845GDML)
CNR CNR Slot Communication Network Riser Slot
Front Panel Header
9-pin Block P.17
(including Power LED/IDE activity LED/
Reset switch/Power On Button lead)
FAN Speed Headers 3-pin Block P.17
Expansion Socket
PCI Slot 32-bit PCI Local Bus Expansion slots P.10
AGP 4X Mode Slot AGP Expansion Slot P.12
P.10
Chapter 2
Hardware installation
6
2-1 Hardware installation Steps
Before using your computer, you had better complete the following steps:
1. Check motherboard jumper setting
2. Install CPU and Fan
3. Install System Memory (DIMM)
4. Install Expansion cards
5. Connect IDE and Floppy cables, Front Panel /Back Panel cable
6. Connect ATX Power cable
7. Power-On and Load Standard Default
8. Reboot
9. Install Operating System
10. Install Driver and Utility
2-2 Checking Motherboard’s Jumper Setting
(1) CPU Frequency Select (3-pin) : JP2
CPU Clock JP2
AUTO 1-2 closed
100 (400) MHz 2-3 closed
133 (533) MHz Open
JP2
1
3
AUTO 133MHz
CPU Frequency Select
JP2
1
3
100MHz
JP2
1
3
(2) CMOS RAM Clear (3-pin) : JP4
A battery must be used to retain the motherboard configuration in CMOS RAM short 1-2
pins of JP4 to store the CMOS data.
To clear the CMOS, follow the procedure below:
1. Turn off the system and unplug the AC power
2. Remove ATX power cable from ATX power connector
3. Locate JP4 and short pins 2-3 for a few seconds
4. Return JP4 to its normal setting by shorting pins 1-2
5. Connect ATX power cable back to ATX power connector
Note: When should clear CMOS
1. Troubleshooting
2. Forget password
3. After over clocking system boot fail
7
13
JP4
1 3
JP4
1-2 closed Normal (Default)
CMOS RAM Clear Setting
2-3 closed Clear CMOS
(3) Keyboard Power On function Enabled/Disabled: JP1
When setting Enabled you can using keyboard by key in password to power on system.
JP1
1-2 closed K/B Power ON Disable
(Default)
1
3
Keyboard Power On Setting
JP1
2-3 closed K/B Power ON Enabled
1
3
2-3 Install CPU
2-3-1 Glossary
Chipset (or core logic) - two or more integrated circuits which control the interfaces between
the system processor, RAM, I/O devises, and adapter cards.
Processor slot/socket - the slot or socket used to mount the system processor on the
motherboard.
Slot (AGP, PCI, ISA, RAM) - the slots used to mount adapter cards and system RAM.
AGP - Accelerated Graphics Port - a high speed interface for video cards; runs at 1X
(66MHz), 2X (133MHz), or 4X (266MHz).
PCI - Peripheral Component Interconnect - a high speed interface for video cards, sound
cards, network interface cards, and modems; runs at 33MHz.
ISA - Industry Standard Architecture - a relatively low speed interface primarily used for
sound cards and modems; runs at approx. 8MHz.
Serial Port - a low speed interface typically used for mouse and external modems.
Parallel Port - a low speed interface typically used for printers.
PS/2 - a low speed interface used for mouse and keyboards.
USB - Universal Serial Bus - a medium speed interface typically used for mouse, keyboards,
scanners, and some digital cameras.
Sound (interface) - the interface between the sound card or integrated sound connectors and
speakers, MIC, game controllers, and MIDI sound devices.
LAN (interface) - Local Area Network - the interface to your local area network.
BIOS (Basic Input/Output System) - the program logic used to boot up a computer and
establish the relationship between the various components.
8
Driver - software, which defines the characteristics of a device for use by another device or
other software.
Processor - the "central processing unit" (CPU); the principal integrated circuit used for doing
the "computing" in "personal computer"
Front Side Bus Frequency -
the working frequency of the motherboard, which is generated
by the clock generator for CPU, DRAM and PCI BUS.
CPU L2 Cache -
the flash memory inside the CPU, normally Athlon CPU has 256K or above,
while Duron will have 64K.
2-3-2 About Intel Pentium 4 478-pin CPU
This motherboard provides a 478-pin surface mount, Zero Insertion Force (ZIF) socket,
referred to as the mPGA478B socket supports Intel Pentium 4 processor in the 478 Pin
package utilizes Flip-Chip Pin Grid Array (FC-PGA2) package technology.
The CPU that comes with the motherboard should have a cooling FAN attached to prevent
overheating. If this is not the case, then purchase a correct cooling FAN before you turn on
your system.
WARNING!
Be sure that there is sufficient air circulation across the processor’s
heatsink and CPU cooling FAN is working correctly, otherwise it may
cause the processor and motherboard overheat and damage, you may install
an auxiliary cooling FAN, if necessary.
To install a CPU, first turn off your system and remove its cover. Locate the ZIF socket and
open it by first pulling the level sideways away from the socket then upward to a 90-degree
angle. Insert the CPU with the correct orientation as shown below. The notched corner
should point toward the end of the level. Because the CPU has a corner pin for two of the
four corners, the CPU will only fit in the orientation as shown.
mPGA478B
Colden Arrow
CPU ZIF mPGAB Socket
When you put the CPU into the ZIF socket. No force require to insert of the CPU, then press
the level to Locate position slightly without any extra force.
2-4 Install Memory
This motherboard provides two 184-pin DUAL INLINE MEMORY MODULES (DIMM)
sites for memory expansion available from minimum memory size of 64MB to maximum
memory size of 2.0GB DDR SDRAM.
9
Valid Memory Configurations
Bank 184-Pin DIMM Total Memory
Bank 0, 1 (DDR1) DDR200/DDR266
DDR SDRAM Module
Bank 2, 3 (DDR2) DDR200/DDR266
DDR SDRAM Module
Total System Memory (Max. 2.0GB) 2
X1
X1
64MB∼1.0GB
64MB∼1.0GB
64MB∼2.0GB
NOTE!
Make sure the installed memory are DDR266 SDRAM support 133MHz
memory clock, otherwise the system may hang during startup.
Generally, installing DDR SDRAM modules to your motherboard is very easy, you can refer
to figure 2-4 to see what a 184-Pin DDR266/DDR200 DDR SDRAM module looks like.
DDR2 (BANK2 + BANK3)
DDR1 (BANK0 + BANK1)
NOTE!
WARNING!
When you install DIMM module fully into the DIMM socket the eject tab should
be locked into the DIMM module very firmly and fit into its indention on both
sides.
For the DDR SDRAM CLOCK is set at 133MHz, use only DDR266-compliant DDR
Modules. When this motherboard operate at 133Mhz, most system will not even
boot if non-compliant modules are used because of the strict timing issues, if your
SDR Modules are not DDR266-compliant, set the DDR SDRAM clock to 100MHz
to ensure system stability.
Figure 2-4
2-5 Expansion Cards
WARNING!
2-5-1 Procedure For Expansion Card Installation
1. Read the documentation for your expansion card and make any necessary hardware or
software setting for your expansion card such as jumpers.
2. Remove your computer’s cover and the bracket plate on the slot you intend to use.
3. Align the card’s connectors and press firmly.
4. Secure the card on the slot with the screen you remove above.
Turn off your power when adding or removing expansion cards or other system
components. Failure to do so may cause severe damage to both your motherboard
and expansion cards.
10
5. Replace the computer system’s cover.
6. Set up the BIOS if necessary.
7. Install the necessary software driver for your expansion card.
2-5-2 Assigning IRQs For Expansion Card
Some expansion cards need an IRQ to operate. Generally, an IRQ must exclusively assign to
one use. In a standard design, there are 16 IRQs available but most of them are already in use.
Standard Interrupt Assignments
IRQ Priority Standard function
0 N/A System Timer
1 N/A Keyboard Controller
2 N/A Programmable Interrupt
3 * 8 Communications Port (COM2)
4 * 9 Communications Port (COM1)
5 * 6 Sound Card (sometimes LPT2)
6 * 11 Floppy Disk Controller
7 * 7 Printer Port (LPT1)
8 N/A System CMOS/Real Time Clock
9 * 10 ACPI Mode when enabled
10 * 3 IRQ Holder for PCI Steering
11 * 2 IRQ Holder for PCI Steering
12 * 4 PS/2 Compatible Mouse Port
13 N/A Numeric Data Processor
14 * 5 Primary IDE Channel
15 * 1 Secondary IDE Channel
* These IRQs are usually available for ISA or PCI devices.
2-5-3 Interrupt Request Table For This Motherboard
Interrupt request are shared as shown the table below:
INT A INT B INT C INT D INT E INT F INT G INT H
Slot 1
Slot 2
Slot 3
Onboard VGA
Onboard LAN
Onboard USB 1
Onboard USB 2
Onboard USB 3
AC97/MC97
IMPORTANT!
If using PCI cards on shared slots, make sure that the drivers support
√
√
√
√
√
√
√
√
√
“Shared IRQ” or that the cards don’t need IRQ assignments. Conflicts will
arise between the two PCI groups that will make the system unstable or
cards inoperable.
2-5-4 AGP Slot
This motherboard provides an AGP Slot, only support the 1.5V 4X AGP VGA card.
11
Do not use AGP 2X card (3.3V) in this motherboard. It will burn and damage the
motherboard due to Intel® 845 chipset can not support AGP 2X (3.3V).
The AGP Slot also supports AGP Digital Display Card for digital display and TV-out.
IMPORTANT!
Example 1:
SiS 305 & ATi Rage 128 Pro AGP card those golden finger is compatible
Before you plug-in AGP card, please make sure the following notice is
fully understood and practiced. If your AGP card has “AGP 4X notch
(show below) please make sure your AGP card is AGP 4X (1.5V) not
AGP 2X (3.3V)
2x notch 4x notch
AGP SLOT
with 2X/4X mode AGP slot, but only can support 2X (3.3V) only. If you
install these cards in Intel® 845 based motherboard it will burn and damage
the motherboard.
Example 2:
We also find Diamond Vipper V770 golden finger is design for 2X/4X mode
AGP Slot. It can be adjusted the jumper for AGP 2X (3.3V) or AGP 4X
(1.5V). But the factory default setting is 2X (3.3V). If you install this AGP
card in motherboard without change the jumper setting to 4X (1.5V), it will
burn the motherboard.
2-6 Connectors, Headers
2-6-1 Connectors
(1) Power Connector (20-pin block) : ATXPWR
ATX Power Supply connector. This is a new defined 20-pins connector that usually
comes with ATX case. The ATX Power Supply allows to use soft power on momentary
switch that connect from the front panel switch to 2-pins Power On jumper pole on the
motherboard. When the power switch on the back of the ATX power supply turned on,
the full power will not come into the system board until the front panel switch is
12
K
K
momentarily pressed. Press this switch again will turn off the power to the system
board.
Pin 1
PIN ROW2 ROW1
1 3.3V 3.3V
2 -12V 3.3V
3 GND GN D
4 Soft Power On 5V
5 GND GN D
6 GND 5V
7 GND GN D
8 -5V Power OK
9 +5V +5V (for Soft Logic)
10 +5V +12V
(2) ATX 12V Power Connector (4-pin block) : ATX12V
This is a new defined 4-pins connector that usually comes with ATX Power Supply. The
ATX Power Supply which fully support Pentium 4 processor must including this
connector for support extra 12V voltage to maintain system power consumption.
Without this connector might cause system unstable because the power supply can not
provide sufficient current for system.
Pin 1
(3) ATX P9 Power Connector (6-pin block) : ATXP9
This is a new defined 6-pins connector that usually comes with ATX Power Supply. The
ATX Power Supply which fully support Pentium 4 processor must including this
connector for support extra 3.3V and 5V voltage to maintain system power consumption.
Without this connector might cause system unstable because the power supply can not
provide sufficient current for system.
GND
GND
GND
3.3V
3.3V
5V
BLK
BL
BL
ORG
ORG
RED
Power Plugs from Power Supply Power Connector on Motherboard
(4) PS/2 Mouse & PS/2 Keyboard Connector: PS2 KB/MOUSE
The connectors for PS/2 keyboard and PS/2 Mouse.
(5) USB Port connector: USB (USB1)
The connectors are 4-pin connector that connect USB devices to the system board.
(6) LAN Port connector: LAN (Only for 845GDML/845LDML)
13
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