Intel D850GB, D850GBAL User Manual

Intel® Desktop Board D850GB/D850GBAL Product Guide

Order Number: A30314-002

Revision History

Revision Revision History Date

-001 First release. September 2000

-002 Second release. October 2000

If an FCC declaration of conformity marking is present on the board, the following statement applies:

FCC Declaration of Conformity

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

For questions related to the EMC performance of this product, contact:

Intel Corporation 5200 N.E. Elam Young Parkway Hillsboro, OR 97124 1-800-628-8686

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and the receiver.

• Connect the equipment to an outlet on a circuit other than the one to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Canadian Department of Communications Compliance Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.

Le présent appareil numerique német pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la classe B prescrites dans le Réglement sur le broullage radioélectrique édicté par le ministére des Communications du Canada.

Disclaimer

Information in this document is provided in connection with Intel products. Except as provided in Intel's Terms and Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.

Intel Corporation may have patents or pending patent applications, trademarks, copyrights, or other intellectual property rights that relate to the presented subject matter. The furnishing of documents and other materials and information does not provide any license, express or implied, by estoppel or otherwise, to any such patents, trademarks, copyrights, or other intellectual property rights.

Intel products are not designed, intended or authorized for use in any medical, life saving, or life sustaining applications or for any other application in which the failure of the Intel product could create a situation where personal injury or death may occur.

Intel may make changes to specifications, product descriptions, and plans at any time, without notice.

The D850GB/D850GBAL published specifications. Current characterized errata are available on request.

†

Third party brands and names are the property of their respective owners.

may contain design defects or errors known as errata which may cause the product to deviate from

1 Desktop Board Features

Feature Summary ................................................................................................................ 7

Components......................................................................................................................... 9

Processor............................................................................................................................10

Main Memory ......................................................................................................................11

850 Chipset ...............................................................................................................12

Intel

82850 Memory Controller Hub (MCH)...............................................................12

Intel

82801BA I/O Controller Hub (ICH2) ..................................................................12

Intel

Firmware Hub (FWH) .................................................................................................12

Input/Output (I/O) Controller................................................................................................13

Real-Time Clock..................................................................................................................13

USB Support .......................................................................................................................14

PCI Enhanced IDE Interface ...............................................................................................14

Expansion Slots...................................................................................................................14

Accelerated Graphics Port (AGP)........................................................................................15

Communication and Networking Riser (CNR) (D850GB only) ............................................15

Audio Subsystem (D850GBAL only)....................................................................................15

BIOS ...................................................................................................................................15

PCI Auto Configuration...............................................................................................16

IDE Auto Configuration...............................................................................................16

Security Passwords ....................................................................................................16

LAN Subsystem (D850GBAL only)......................................................................................16

LAN Subsystem Software...........................................................................................17

RJ-45 LAN Connector LEDs.......................................................................................17

Enhanced Diagnostic LEDs.................................................................................................17

Speaker...............................................................................................................................17

Battery.................................................................................................................................17

Power Management Features .............................................................................................18

Wake on LAN Technology..........................................................................................18

Instantly Available Technology ...................................................................................18

Resume on Ring.........................................................................................................20

2 Installing and Replacing Desktop Board Components

Before You Begin ................................................................................................................21

Installing and Removing an AGP Retention Mechanism and Card ......................................22

Installing the AGP Card Retention Mechanism...........................................................22

Installing an AGP Card ...............................................................................................24

Removing an AGP Card from the Retention Mechanism............................................24

Removing the AGP Card Retention Mechanism.........................................................25

Installing the I/O Shield .......................................................................................................26

Installing and Removing the Desktop Board........................................................................27

Installing the Processor Retention Mechanisms ..................................................................28

iii

Intel Desktop Board D850GB/D850GBAL Product Guide

Installing and Removing a Processor ..................................................................................30

How to Install the Fan Heatsink ..................................................................................31

Removing a Processor ...............................................................................................33

Installing and Removing Memory ........................................................................................34

Installing Memory .......................................................................................................34

Removing Memory .....................................................................................................35

Replacing the Battery..........................................................................................................36

Connecting the IDE Cable...................................................................................................38

Setting the Jumpers ............................................................................................................39

Setting the BIOS Configuration Jumper......................................................................40

Setting the USB Port 2 Routing Jumper .....................................................................40

Clearing Passwords ............................................................................................................40

3 Updating the BIOS

Updating the BIOS with the Intel® Express BIOS Update Utility ..........................................43

Updating the BIOS with the Intel

Preparing for the Update ............................................................................................43

Obtaining the BIOS Update File .........................................................................44

Recording the Current BIOS Settings ................................................................44

Creating Bootable Media....................................................................................44

Creating the BIOS Update Media.......................................................................45

Updating the BIOS......................................................................................................46

Recovering the BIOS..................................................................................................46

Flash Memory Update Utility ..........................................43

4 Using the Setup Program..........................................................................................49

Maintenance Menu..............................................................................................................50

Extended Configuration Submenu..............................................................................51

Main Menu ..........................................................................................................................52

Advanced Menu ..................................................................................................................53

PCI Configuration Submenu.......................................................................................54

Boot Configuration Submenu......................................................................................55

Peripheral Configuration Submenu.............................................................................56

IDE Configuration Submenu.......................................................................................58

Primary/Secondary IDE Master/Slave Submenus.......................................................59

Diskette Configuration Submenu ................................................................................60

Event Log Configuration Submenu.............................................................................61

Video Configuration Submenu....................................................................................62

Security Menu .....................................................................................................................63

Power Menu........................................................................................................................64

Boot Menu...........................................................................................................................65

IDE Drive Configuration Submenu..............................................................................66

Exit Menu ............................................................................................................................67

5 Technical Reference

Board Connectors ...............................................................................................................69

Back Panel Connectors ..............................................................................................70

Midboard Connectors .................................................................................................71

Audio Connectors (D850GBAL only)..................................................................71

Power and Hardware Connectors ......................................................................72

Add-In Board and Peripheral Interface Connectors............................................73

Front Panel Connectors..............................................................................................74

Desktop Board Resources...................................................................................................75

Memory Map ..............................................................................................................75

DMA Channels ...........................................................................................................75

I/O Map ......................................................................................................................76

Interrupts ....................................................................................................................78

A Error Messages and Indicators

BIOS Beep Codes...............................................................................................................79

Enhanced Diagnostic LEDs.................................................................................................80

BIOS Error Messages .........................................................................................................82

B Regulatory and Integration Information

Regulatory Compliance.......................................................................................................85

Product Certification Markings.............................................................................................86

Installation Precautions .......................................................................................................86

Installation Instructions........................................................................................................87

Ensure Electromagnetic Compatibility (EMC) .............................................................87

Ensure Chassis and Accessory Module Certifications ................................................87

Prevent Power Supply Overload.................................................................................88

Place Battery Marking on the Computer .....................................................................88

Use Only for Intended Applications.............................................................................88

Contents

Figures

1. Desktop Board Components.......................................................................................... 9

2. Location of Standby Power Indicator.............................................................................19

3. AGP Card with Retention Notch....................................................................................22

4. Installing the AGP Card Retention Mechanism .............................................................23

5. Removing the AGP Card ..............................................................................................24

6. Removing the AGP Card Retention Mechanism ...........................................................25

7. Installing the D850GB I/O Shield ..................................................................................26

8. Installing the D850GBAL I/O Shield ..............................................................................26

9. Location of the Mounting Screw Holes..........................................................................27

10. Location of the Processor RM Mounting Holes .............................................................28

11. Installing the Processor RM..........................................................................................29

12. Installing a Processor....................................................................................................30

13. Applying Thermal Grease to the Processor Surface .....................................................31

14. Attaching the Fan Heatsink Clip....................................................................................31

15. Installing the Heatsink Clips ..........................................................................................32

16. Connecting the Processor Fan Cable to the Processor Fan Connector ........................33

17. Installing a Memory Module ..........................................................................................35

18. Removing the Battery ...................................................................................................37

19. Connecting the IDE Cable.............................................................................................38

20. Location of the BIOS Configuration and USB Port 2 Routing Jumpers .........................39

21. Connector Groups ........................................................................................................69

22. Back Panel Connectors ................................................................................................70

Intel Desktop Board D850GB/D850GBAL Product Guide

23. Audio Connectors .........................................................................................................71

24. Power and Hardware Control Connectors.....................................................................72

25. Add-in Board and Peripheral Interface Connectors.......................................................73

26. Front Panel Connectors................................................................................................74

27. Location of the Enhanced Diagnostic LEDs ..................................................................80

Tables

1. Processors Supported by the Desktop Board ...............................................................10

2. RJ-45 LAN Connector LEDs .........................................................................................17

3. Standby Current Requirements.....................................................................................20

4. Jumper Settings for the BIOS Setup Program Modes (J8C2) .......................................40

5. USB Port 2 Routing Jumper Settings (J8D1) ................................................................40

6. BIOS Setup Program Menu Bar....................................................................................49

7. BIOS Setup Program Function Keys.............................................................................50

8. Maintenance Menu .......................................................................................................50

9. Extended Configuration Submenu ................................................................................51

10. Main Menu....................................................................................................................52

11. Advanced Menu............................................................................................................53

12. PCI Configuration Submenu .........................................................................................54

13. Boot Configuration Submenu........................................................................................55

14. Peripheral Configuration Submenu ...............................................................................56

15. IDE Configuration Submenu .........................................................................................58

16. Primary/Secondary IDE Master/Slave Submenus.........................................................59

17. Diskette Configuration Submenu ..................................................................................60

18. Event Log Configuration Submenu ...............................................................................61

19. Video Configuration Submenu ......................................................................................62

20. Security Menu...............................................................................................................63

21. Power Menu..................................................................................................................64

22. Boot Menu ....................................................................................................................65

23. IDE Drive Configuration Submenu ................................................................................66

24. Exit Menu......................................................................................................................67

25. System Memory Map....................................................................................................75

26. DMA Channels..............................................................................................................75

27. I/O Map.........................................................................................................................76

28. Interrupts ......................................................................................................................78

29. Beep Codes..................................................................................................................79

30. Enhanced Diagnostic LED States.................................................................................81

31. BIOS Error Messages...................................................................................................82

32. Safety Regulations........................................................................................................85

33. EMC Regulations..........................................................................................................85

1 Desktop Board Features

Feature Summary

Form Factor Processor

Memory

Chipset

I/O Control LAN (D850GBAL only)

Video Audio (D850GBAL only) Peripheral Interfaces

Expansion Capabilities

CNR (D850GB only) BIOS

Power Management

ATX compatible (9.6 inches x 12 inches)

• Support for an Intel

package

• 400 MHz system data bus

• Four 168-pin Direct Rambus

• Support from 128 MB to a maximum 2 GB of system memory

Intel

850 chipset, consisting of:

• Intel

• Firmware Hub (FWH)

SMSC LPC47M102 low pin count (LPC) interface I/O controller

• Intel

• RJ-45 connector

AGP connector supporting 1.5 V 4X or 2X AGP cards

Analog Devices AD1881 analog codec (AC ’97)

• Two Universal Serial Bus (USB) ports and a header on the board for an

• Two IDE interfaces with Ultra DMA, ATA-66/100 support

• One diskette drive interface

• One parallel port

• One serial port

• PS/2

• Five PCI bus add-in card connectors

• One AGP connector

One Communication and Networking Riser (CNR) shared with PCI slot 5

• Intel/AMI BIOS

• 4 Mbit symmetrical flash memory

• Support for SMBIOS

• Support for Advanced Configuration and Power Interface (ACPI)

• Support for Advanced Power Management (APM)

• Support for Plug and Play

82850 Memory Controller Hub (MCH) with Accelerated Hub

Architecture (AHA) bus

82801BA I/O Controller Hub (ICH2) with AHA bus

82562EM 10/100 Mbit/sec Platform LAN Connect (PLC) device

additional two ports

†

keyboard and mouse ports

Pentium® 4 processor in a 423-Pin Grid Array (PGA)

†

RIMM† sockets

continued

Intel Desktop Board D850GB/D850GBAL Product Guide

Feature Summary (continued)

Management Features

Instantly Available PC

Wake on LAN Technology Connector

†

Hardware monitor with

• Two fan sensing inputs used to monitor fan activity

• Remote diode temperature sensing

• Voltage sensing to detect out of range values

• Support for PCI Local Bus Specification Revision 2.2

• Suspend to RAM (STR) support

• Wake on USB, PCI, CNR, RS-232, PS/2, LAN, and front panel

Support for system wake up using an add-in network interface card with remote wake up capability

Other Features

NOTE

✏

• Enhanced diagnostics LEDs on the back panel

• SCSI hard drive activity LED connector for the front panel

• Speaker

For information about Intel® desktop boards, including technical product specifications, BIOS updates, and device drivers, go to the Intel World Wide Web site at:

http://support.intel.com/support/motherboards/desktop/

Components

Figure 1 shows the major components on the board.

Desktop Board Features

A B

BB AA

Z Y

A. ADI AD1881 audio codec (D850GBAL only) Q. Primary IDE connector

B. Auxiliary line-in connector (D850GBAL only) R. Secondary IDE connector

C. Legacy CD-ROM connector (D850GBAL only) S. USB port 2 connector

D. ATAPI-style CD-ROM connector

(D850GBAL only)

E. AGP connector U. Front panel USB connector

F. Intel 82850 Memory Controller Hub (MCH) V. Alternate power LED/sleep connector

G. Back panel connectors W. Chassis fan connector

H. 12 V processor core voltage connector X. Battery

I. Chassis fan connector Y. BIOS configuration jumper

J. Processor socket Z. Wake on LAN technology connector

K. Processor fan connector AA. SCSI LED connector

L. RIMM fan connector BB. Speaker

M. RIMM sockets CC. Intel 82801BA I/O Controller Hub (ICH2)

N. Power connector DD. PCI bus add-in card connectors

O. Auxiliary power connector EE. Communication and Networking Riser (CNR)

P. Diskette drive connector (D850GB only)

D G

C E

UV Q

L M

P N

T. Front panel connector

OM10659

Figure 1. Desktop Board Components

Intel Desktop Board D850GB/D850GBAL Product Guide

Processor

CAUTION

The D850GB/D850GBAL board supports processors that have a 49.8 A maximum current draw (1.1 to 1.85 processor, the board, and the power supply. See the processor’s data sheet for current usage requirements.

NOTE

✏

66 MHz system bus frequency processors are not supported in this product. A hardware lockout is provided so that if such a processor is installed, the D850GB/D850GBAL board will not power-up.

The board supports a single Intel Pentium 4 processor. Processors are not included with the board and must be purchased separately.

The processor connects to the board through the 423 PGA socket. The Pentium 4 processor may be removed and replaced to accommodate supported higher speed processors.

V core). Using a processor not in compliance with these guidelines can damage the

The board supports the processors listed in Table 1.

Table 1. Processors Supported by the Desktop Board

Processor Frequency

Processor Type

Intel Pentium 4 processor 1.3, 1.4, and 1.5 400 256

(GHz)

System Bus Frequency (MHz)

L2 Cache Size (kB)

For the latest information on processor support for the D850GB/D850GBAL board, refer to the Intel desktop board web site at:

http://support.intel.com/support/motherboards/desktop/

For instructions on installing or upgrading the processor, see Chapter 2.

Desktop Board Features

Main Memory

The board has four 2.5 V memory module sockets that support RIMMs containing Direct Rambus DRAM (RDRAM) devices.

The board supports the following memory features:

• Maximum of 32 DRAM devices per channel

• 128 MB (minimum) to 2 GB (maximum) onboard capacity utilizing 256 Mbit or 512 Mbit

technology

• Single- or double-sided RIMM modules

• PC600 or PC800 compliant RDRAM

• Serial Presence Detect (SPD) memory only

NOTE

✏

For information about vendors that support these memory requirements, refer to the D850GB link on this Intel web site:

http://support.intel.com/support/motherboards/desktop/

For information about installing memory, see Chapter 2.

Intel Desktop Board D850GB/D850GBAL Product Guide

Intel® 850 Chipset

The Intel 850 chipset consists of the following devices:

• Intel 82850 Memory Controller Hub (MCH) with AHA bus

• Intel 82801BA I/O Controller Hub (ICH2) with AHA bus

• Firmware Hub (FWH)

Intel® 82850 Memory Controller Hub (MCH)

The MCH has these features:

• Integrated dual Direct Rambus technology memory channel

• Support for 128 MB to 2 GB main system memory

• Auto-detection of RDRAM memory

• Support for a single AGP device

Intel® 82801BA I/O Controller Hub (ICH2)

The ICH2 has these features:

• Integrated Intel® Ethernet LAN MAC (external PLC required)

• Support for the PCI interface

• Support for the Low Pin Count (LPC) interface

• Integrated IDE controller

• Support for USB

• Support for CNR

• General purpose I/O

• Power management logic

• Support for the System Management Bus

• Real-Time Clock

• Support for AC ’97 audio devices and modems

Firmware Hub (FWH)

The FWH has these features:

• System BIOS

• System security and manageability logic that enables protection for storing and updating of

platform information

Input/Output (I/O) Controller

The SMSC LPC47M102 ultra I/O controller features the following:

• Low pin count (LPC) interface

• 3.3 V operation

• One serial port

• One parallel port with Extended Capabilities Port (ECP) and Enhanced Parallel Port

(EPP) support

• Serial IRQ interface compatible with serialized IRQ support for PCI systems

• PS/2-style mouse and keyboard interfaces

• Interface for one 1.2 MB, 1.44 MB, or 2.88 MB diskette drive

• Intelligent power management, including a programmable wake up event interface

• PCI power management support

• IrDA

• Fan control:

†

1.0 compliant

 Two fan control outputs  Two fan tachometer inputs

Desktop Board Features

Real-Time Clock

The Real-Time Clock (RTC) is integrated into the chipset. The RTC provides battery backed-up date and time keeping device with two banks of static RAM with 128 bytes each. A battery on the board keeps the clock current when the computer is turned off.

NOTE

✏

The recommended method of accessing the date in systems with Intel desktop boards is indirectly from the Real-Time Clock (RTC) via the BIOS. The BIOS on Intel desktop boards contains a century checking and maintenance feature that checks the least two significant digits of the year stored in the RTC during each BIOS request (INT 1Ah) to read the date and, if less than 80 (i.e., 1980 is the first year supported by the PC), updates the century byte to 20. This feature enables operating systems and applications using the BIOS date/time services to reliably manipulate the year as a four-digit value.

Intel Desktop Board D850GB/D850GBAL Product Guide

USB Support

The board has two USB ports. Two additional ports may be connected to a header on the board. You can connect two USB peripheral devices directly to the computer without an external hub. To attach more than two devices, connect an external hub to either of the built-in ports. The board supports the standard universal host controller interface (UHCI) and takes advantage of standard software drivers written to be compatible with UHCI.

NOTE

✏

Computer systems that have an unshielded cable attached to a USB port might not meet FCC Class B requirements, even if no device or a low-speed USB device is attached to the cable. Use a shielded cable that meets the requirements for a full-speed USB device.

PCI Enhanced IDE Interface

The ICH2’s IDE interface handles the exchange of information between the processor and

†

peripheral devices like hard disks, CD-ROM drives, and Iomega Zip The interface supports:

• Up to four IDE devices (such as hard drives)

• ATAPI devices (such as CD-ROM drives)

• PIO Mode 3 and PIO Mode 4 devices

• Ultra ATA-66/100 protocols

• Support for laser servo (LS-120) drives

drives inside the computer.

Expansion Slots

The board has:

• Five PCI bus add-in card connectors

• One AGP connector

• One CNR connector shared with PCI slot 5 (D850GB only)

Desktop Board Features

Accelerated Graphics Port (AGP)

NOTE

✏

The board is only compatible with 1.5 V AGP cards.

The AGP is a high-performance bus for graphics-intensive applications, such as 3D graphics. AGP is independent of the PCI bus and is intended for exclusive use with graphical display devices.

The AGP connector supports AGP 4X and 2X add-in cards. The AGP card retention mechanism is used only with cards with retention notches (see Figure 3 on page 22). For information about installing the AGP card retention mechanism and an AGP card, see Chapter 2.

Communication and Networking Riser (CNR) (D850GB only)

The CNR provides an interface that supports the audio, modem, USB, and LAN interfaces of the Intel 850 chipset.

Audio Subsystem (D850GBAL only)

The audio subsystem features the following:

• Intel 82801BA ICH2

• Analog Devices AD1881 analog codec (AC ’97)

NOTE

✏

The line out connector, located on the back panel, is designed to power either headphones or amplified speakers only. Poor audio quality may occur if passive (non-amplified) speakers are connected to this output.

Audio drivers and utilities are available from Intel’s World Wide Web site:

http://support.intel.com/support/motherboards/desktop/

BIOS

The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, the PCI and IDE auto-configuration utilities, and the video BIOS. The BIOS is stored in the Firmware Hub.

The BIOS can be updated by following the instructions in Section 3.

Intel Desktop Board D850GB/D850GBAL Product Guide

PCI Auto Configuration

If you install a PCI add-in board in your computer, the PCI auto-configuration utility in the BIOS automatically detects and configures the resources (IRQs, DMA channels, and I/O space) for that add-in board. You do not need to run the BIOS Setup program after you install a PCI add-in board.

IDE Auto Configuration

If you install an IDE device (such as a hard drive) in your computer, the IDE auto-configuration utility in the BIOS automatically detects and configures the device for your computer. You do not need to run the BIOS Setup program after installing an IDE device.

Security Passwords

The BIOS includes security features that restrict whether the BIOS Setup program can be accessed and who can boot the computer. A supervisor password and a user password can be set for the Setup and for booting the computer, with the following restrictions:

• The supervisor password gives unrestricted access to view and change all Setup options. If

only the supervisor password is set, pressing <Enter> at the password prompt of Setup gives the user restricted access to Setup.

• If both the supervisor and user passwords are set, you must enter either the supervisor

password or the user password to access Setup. Setup options are then available for viewing and changing depending on whether the supervisor or user password was entered.

• Setting a user password restricts who can boot the computer. The password prompt is

displayed before the computer is booted. If only the supervisor password is set, the computer boots without asking for a password. If both passwords are set, you can enter either password to boot the computer.

LAN Subsystem (D850GBAL only)

The Network Interface Controller subsystem consists of the ICH2 (with integrated LAN Media Access Controller) and a physical layer interface device. Features include:

• PCI Bus Master interface

• CSMA/CD Protocol Engine

• Serial CSMA/CD unit interface that supports the following physical layer interface devices:  82562EM onboard LAN  82562ET/EM (10/100 Mbit/sec Ethernet) on CNR bus (D850GB only)  82562EH (1 Mbit/sec HomePNA

• PCI Power Management  Support APM  Supports ACPI technology  Supports Wake up from suspend state (Wake on LAN technology)

†

)on CNR bus (D850GB only)

Desktop Board Features

LAN Subsystem Software

For LAN software and drivers, refer to the D850GB link on Intel’s World Wide Web site at:

http://support.intel.com/support/motherboards/desktop

RJ-45 LAN Connector LEDs

Two LEDs are built into the RJ-45 LAN connector. Table 2 describes the LED states when the board is powered up and the LAN subsystem is operating.

Table 2. RJ-45 LAN Connector LEDs

LED Color LED State Indicates

Off 10 Mbit/sec data rate is selected.Green

On 100 Mbit/sec data rate is selected.

Yellow

Off LAN link is not established.

On (steady state) LAN link is established.

On (brighter and pulsing) The computer is communicating with another computer on

the LAN.

Enhanced Diagnostic LEDs

Four dual-colored enhanced diagnostic LEDs are located on the back panel. The LEDs report POST failures. See page 80 for information about the LEDs.

Speaker

A 47 Ω inductive speaker is mounted on the desktop board. The speaker provides audible error code (beep code) information during the Power-On Self-Test (POST).

Battery

A battery on the board keeps the values in CMOS RAM and the clock current when the computer is turned off. See Chapter 2 for instructions on how to replace the battery.

Intel Desktop Board D850GB/D850GBAL Product Guide

Power Management Features

Power management is implemented at several levels, including:

• Software support:  Advanced Configuration and Power Interface (ACPI)  Advanced Power Management (APM)

• Hardware support:  Power connector  Fan connectors  Wake on LAN technology  Instantly Available technology  Resume on Ring  Wake from USB  Wake from PS/2 keyboard  PME# wakeup support

If the board is used with an ACPI-aware operating system, the BIOS can provide ACPI support. Otherwise, it defaults to APM support.

Wake on LAN Technology

CAUTION

For Wake on LAN technology, the 5-V standby line for the power supply must be capable of delivering +5 V ± 5 % at 720 mA. Failure to provide adequate standby current when using this feature can damage the power supply.

The Wake on LAN technology connector can be used with PCI bus network adapters that have a remote wake-up connector. Network adapters that are PCI 2.2 compliant assert the wake-up signal using the PCI bus signal PME# (pin A19 on the PCI bus connectors). See Figure 1 on page 9 for the location of the Wake on LAN technology connector on the board.

Instantly Available Technology

CAUTION

Instantly Available technology enables the board to enter the ACPI S3 (Suspend-to-RAM) sleep state. While in the S3 sleep state, the computer will appear to be off. When signaled by a wake-up device or event, the system quickly returns to its last known awake state.

The board’s standby power indicator, shown in Figure 2 on page 19, is lit when the memory modules and PCI bus connectors have power, even when the computer appears to be off.

Desktop Board Features

If the system has a dual-colored power LED on the front panel, the sleep state is indicated by the LED turning amber.

CR6F1

OM10442

Figure 2. Location of Standby Power Indicator

CAUTION

If the standby current necessary to support multiple wake events from the PCI and/or USB buses exceeds power supply capacity, the board may lose register settings stored in memory. Calculate the standby current requirements using the steps described below.

Power supplies used with this board must be able to provide enough standby current to support the standard Instantly Available (ACPI S3 sleep state) configuration as outlined in Table 3. Values are determined by specifications such as PCI 2.2. Actual measurements may vary.

To estimate the total amount of standby current required for a particular system configuration, standby current requirements of all installed components must be added. Refer to the descriptions in Table 3 and follow the steps outlined below:

1. Note the total D850GB/D850GBAL board standby current requirement.

2. Add to that the total PS/2 port standby current requirement if a wake-enabled device is connected.

3. Add, from the PCI 2.2 slots (wake-enabled) row, the total of the number of wake-enabled devices installed (PCI and AGP) multiplied by the standby current requirement.

4. Add, from the PCI 2.2 slots (nonwake-enabled) row, the total of the number of wake-enabled devices installed (PCI and AGP) multiplied by the standby current requirement.

Intel Desktop Board D850GB/D850GBAL Product Guide

5. Add all additional wake-enabled devices’ and nonwake-enabled devices’ standby current requirements as applicable.

6. Add all the required current totals from steps 1 through 5 to determine the total estimated standby current power supply requirement.

Table 3. Standby Current Requirements

Instantly Available Current Support Description

Estimate for integrated board components

Estimate for add-on components (Add to integrated board components shown above)

Total for the D850GB board 770

PS/2 ports

PCI 2.2 slots (wake-enabled) 375

PCI 2.2 slots (nonwake-enabled) 100

WOL header 525

CNR* (wake enabled) 875

CNR* (non-wake enabled) 40

USB ports

Standby Current Requirements (mA)

345

700

* Dependent upon system configuration

NOTE

✏

PCI requirements are calculated by totaling the following:

• One wake-enabled device @ 375 mA

• Five non wake-enabled devices @ 20 mA each

PS/2 Ports requirements per the IBM PS/2 Port Specification (Sept 1991):

• Keyboard @ 275 mA

• Mouse @ 70 mA

USB requirements are calculated by totaling the following:

• One wake-enabled device @ 500 mA

• USB hub @ 100 mA

• Three USB non-wake-enabled devices @ 2.5 mA each

The USB ports are limited to a combined total of 700 mA.

Resume on Ring

The operation of Resume on Ring can be summarized as follows:

• Resumes operation from either the APM sleep mode or the ACPI S1 state

• Requires only one call to access the computer

• Detects incoming call similarly for external and internal modems

• Requires modem interrupt be unmasked for correct operation

2 Installing and Replacing Desktop Board

Components

This chapter tells you how to:

• Install and remove an AGP retention mechanism and card

• Install the I/O shield

• Install and remove the board

• Install the processor retention mechanism and board in the chassis

• Install a processor

• Install and remove memory

• Replace the battery

• Connect the IDE cable

• Set the jumpers

• Clear passwords

Before You Begin

CAUTION

Before you install this board in a chassis, see Appendix B for regulatory requirements and precautions.

• Always follow the steps in each procedure in the correct order.

• Set up a log to record information about your computer, such as model, serial numbers,

installed options, and configuration information.

• Electrostatic discharge (ESD) can damage components. Perform the procedures described in this chapter only at an ESD workstation using an antistatic wrist strap and a conductive foam pad. If such a station is not available, you can provide some ESD protection by wearing an antistatic wrist strap and attaching it to a metal part of the computer chassis.

WARNINGS

The procedures in this chapter assume familiarity with the general terminology associated with personal computers and with the safety practices and regulatory compliance required for using and modifying electronic equipment.

Disconnect the computer from its power source and from any telecommunications links, networks, or modems before performing any of the procedures described in this chapter. Failure to disconnect power, telecommunications links, networks, or modems before you open the computer or perform any procedures can result in personal injury or equipment damage. Some circuitry on the board can continue to operate even though the front panel power button is off.

Intel Desktop Board D850GB/D850GBAL Product Guide

Installing and Removing an AGP Retention Mechanism and Card

The AGP connector supports 1.5 V 4X and 2X AGP cards. Newer cards have a retention notch as shown in Figure 3. When using notched cards, install the AGP card retention mechanism before installing a card. The AGP card retention mechanism is not used with unnotched cards. Pages 22–25 describe:

• Installing the AGP card retention mechanism

• Installing an AGP card

• Removing an AGP card from the retention mechanism

• Removing the AGP card retention mechanism

Installing the AGP Card Retention Mechanism

CAUTION

Install the AGP card retention mechanism (RM) only when using an AGP card with a retention notch (A) as shown in Figure 3. Use of the RM with an unnotched card may impair video operation. If you need to remove the RM, follow the instructions on page 25.

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Figure 3. AGP Card with Retention Notch

Installing and Replacing Desktop Board Components

The AGP card RM (see Figure 4) encloses the board’s AGP connector and stabilizes the AGP card. Place the board (component side up) on a flat, supportive surface, preferably on the anti-static bag in which the board was shipped in. Follow the steps outlined below to attach the RM (A) to the AGP connector (B):

1. Locate the AGP connector (J5E1) on the board as shown below. Note that the board’s silkscreen (C) indicates the correct final position of the lever (D) on the RM.

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Figure 4. Installing the AGP Card Retention Mechanism

2. Position the RM over the AGP connector as shown below.

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3. Push the lever end of the RM in the direction of the arrow until the two rearmost tabs (E)

spread over the end of the AGP connector.

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4. Push the free end of the RM over the other end of the AGP connector and press down evenly on both ends of the RM until all four tabs click underneath the AGP connector. Do not apply unnecessary pressure to avoid damaging the board.

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Intel Desktop Board D850GB/D850GBAL Product Guide

Installing an AGP Card

Follow these instructions to install an AGP card:

1. Place the AGP card in the AGP connector.

2. Press down on the card until it is completely seated in the AGP connector and the card retention notch snaps into place around the RM pin.

3. Secure the card’s metal bracket to the chassis back panel with a screw.

Removing an AGP Card from the Retention Mechanism

Follow these instructions to remove an AGP card from the retention mechanism:

1. Remove the screw (B) that secures the card’s metal bracket (A) to the chassis back panel.

2. Push back on the retention mechanism lever (D), as shown in Figure 5, until the retention pin (C) completely clears the notch in the card.

3. Pull the card straight up (E).

Figure 5. Removing the AGP Card

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Installing and Replacing Desktop Board Components

Removing the AGP Card Retention Mechanism

Follow these instructions to remove the AGP card retention mechanism:

1. Using diagonal cutters (A), cut the loop (B) joining the two sides of the retention mechanism (see Figure 6).

2. Spread the sides of the retention mechanism (C) and lift the retention mechanism off of the AGP connector.

NOTE

✏

Once removed using this method, the AGP RM cannot be reused.

Figure 6. Removing the AGP Card Retention Mechanism

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Intel Desktop Board D850GB/D850GBAL Product Guide

Installing the I/O Shield

The board comes with an I/O shield. When installed in the chassis, the shield blocks radio frequency transmissions, protects internal components from dust and foreign objects, and promotes correct airflow within the chassis.

Install the I/O shield before installing the board in the chassis. Place the shield inside the chassis as shown in Figure 7 and Figure 8. Press the shield into place so that it fits tightly and securely. If the shield doesn’t fit, obtain a properly-sized shield from the chassis supplier.

Figure 7. Installing the D850GB I/O Shield

Figure 8. Installing the D850GBAL I/O Shield

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Installing and Replacing Desktop Board Components

Installing and Removing the Desktop Board

Refer to your chassis manual for instructions on installing and removing the board. The board is secured to the chassis by 10 screws. Figure 9 shows the locations of the mounting screw holes.

Do not install screws around the processor socket at this time.

NOTES

✏

You will need a Phillips (#2 bit) screwdriver.

Refer to Appendix B for regulatory requirements and installation instructions and precautions.

WARNING

This procedure should be done only by qualified technical personnel. Disconnect the computer from its power source before performing the procedures described here. Failure to disconnect the power before you open the computer can result in personal injury or equipment damage.

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Figure 9. Location of the Mounting Screw Holes

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