What This Chapter Contains
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 Board Differences...11 Overview....12 Online Support....19 Operating System Support....19 Design Specifications....20 Processor....23 System Memory....24 Intel 845GE Chipset...26 I/O Controller....35 Audio Subsystem....37 LAN Subsystem (Optional)....39 CNR (Optional)....40 Hardware Management Subsystem...42 Power Management....44

1.1 Board Differences

This TPS describes these Intel Desktop Boards: D845GEBV2 and D845GERG2. The Desktop Boards are identical with the exception of the items listed in Table 1.
Table 1. Summary of Board Differences
ATX Form Factor (12.00 inches by 8.20 inches) Six PCI bus connectors D845GERG2 microATX Form Factor (9.60 inches by 8.20 inches) Three PCI bus connectors

D845GEBV2

Most of the illustrations in this document show only the Desktop Board D845GEBV2. When there are significant differences between the two Desktop Boards, illustrations of both boards are provided.

1.2 Overview

1.2.1 Feature Summary

Feature Summary

D845GEBV2: ATX (12.00 inches by 8.20 inches) D845GERG2: microATX (9.60 inches by 8.20 inches) Processor Support for an Intel Pentium 4 processor in an mPGA478 socket with a 400/533 MHz system bus Support for an Intel Celeron processor in an mPGA478 socket with a 400 MHz system bus Memory Two 184-pin DDR SDRAM Dual Inline Memory Module (DIMM) sockets Support for single-sided or double-sided DIMMs (DDR333/266) Support for up to 2 GB system memory
NOTE: The Desktop Boards D845GEBV2/D845GERG2 have been designed to
Table 2 summarizes the major features of the Desktop Boards D845GEBV2 and D845GERG2.

Table 2.

Form Factor
support DIMMs based on 512 Mbit technology for a maximum onboard capacity of up to 2 GB, but this technology has not been validated (currently validated up to 1.0 GB) on this board. Please refer to the following Intel web sites. For the Desktop Board D845GEBV2: http://developer.intel.com/design/motherbd/bv2/bv2_mem.htm For the Desktop Board D845GERG2: http://developer.intel.com/design/motherbd/rg2/rg2_mem.htm Chipset Intel 845GE Chipset, consisting of: Intel 82845GE Graphics and Memory Controller Hub (GMCH) Intel 82801DB I/O Controller Hub (ICH4) 4 Mbit Firmware Hub (FWH) Video Intel Extreme Graphics controller AGP connector supporting 1x, 2x, and 4x AGP cards (1.5 V only) or an AGP Digital Display (ADD) card Integrated retention mechanism Audio I/O Control USB Peripheral Interfaces Audio subsystem for AC 97 processing using the Analog Devices AD1981B codec SMSC LPC47M172 LPC Bus I/O controller Support for USB 2.0 devices Up to six USB ports One serial port One parallel port Two IDE interfaces with UDMA 33, ATA-66/100 support One diskette drive interface PS/2 keyboard and mouse ports Three fan connectors continued

P Q R S T U V W X Y Z AA BB CC DD
IDE connectors Speaker Battery SCSI LED connector Chassis intrusion connector Front chassis fan connector BIOS Setup configuration jumper block Auxiliary front panel power LED connector 4 Mbit Firmware Hub (FWH) Front panel connector Intel 82801DB I/O Controller Hub (ICH4) Front panel USB connector AGP connector PCI bus add-in card connectors CNR connector (optional)
Figure 1. Desktop Board D845GEBV2 Components
Figure 2 shows the location of the major components on the Desktop Board D845GERG2.

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Figure 2. Desktop Board D845GERG2 Components
Figure 3 shows the location of the major components on the Desktop Board D845GERG2 that includes the Gigabit Ethernet LAN option. The callouts in Figure 2 and Figure 3 are identical, except as follows: In Figure 3, the auxiliary line in connector (callout C) has been moved In Figure 3, callout D highlights the Intel 82540EM Gigabit Ethernet LAN Controller

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Audio codec Front panel audio connector Auxiliary line-in connector Intel 82540EM Gigabit Ethernet LAN Controller Rear chassis fan connector ATAPI CD-ROM connector Back panel connectors +12V power connector (ATX12V) mPGA478 processor socket Processor fan connector Intel 82845GE GMCH DIMM sockets I/O Controller Power connector Diskette drive connector
Figure 3. Desktop Board D845GERG2 Components (with Gigabit Ethernet LAN option)

Block Diagrams

Figure 4 is a block diagram of the major functional areas of the Desktop Boards D845GEBV2 and D845GERG2. See Figure 7 on page 33 for USB port routing.
= connector or socket Back Panel/ Front Panel USB Ports USB Serial Ports Primary/ Secondary IDE UDMA 33 and ATA-66/100 LPC Bus I/O Controller Parallel Port PS/2 Mouse PS/2 Keyboard Diskette Drive Connector LPC Bus AGP Interface 4X AGP Connector (1.5 V only)

mPGA478 Processor Socket

System Bus (400/533 MHz)
Intel 82845GE Graphics and Memory Controller Hub (GMCH)

AHA Bus

Intel 82801DB I/O Controller Hub (ICH4)
4 Mbit Firmware Hub (FWH)

Intel 845GE Chipset

Display Interface Memory Bus Physical Layer Interface (Optional)

VGA Port

LAN Connector (Optional)
DIMM Banks (2) SMBus PCI Bus CSMA/CD Unit Interface AC Link SMBus PCI Slot 1 PCI Slot 2 PCI Slot 3 PCI Slot 4 PCI Slot 5 PCI Slot 6 D845GEBV2 Only Hardware Management ASIC SMBus AD1981B Audio Codec Line In Line Out Mic In Auxiliary Line In CD-ROM CNR Connector (Optional)

The GMCH is a centralized controller for the system bus, the memory bus, the AGP bus, and the Accelerated Hub Architecture interface. The ICH4 is a centralized controller for the boards I/O paths. The FWH provides the nonvolatile storage of the BIOS. The component combination provides the chipset interfaces as shown in Figure 6.
UDMA 33 ATA-66/100 System Bus

Network USB

845GE Chipset
82845GE Graphics and Memory Controller Hub (GMCH) Display Interface AGP Interface DDR SDRAM Bus LPC Bus SMBus PCI Bus AC Link AHA Bus 82801DB I/O Controller Hub (ICH4) 4 Mbit Firmware Hub (FWH)

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Figure 6. Intel 845GE Chipset Block Diagram
For information about The Intel 845GE chipset Resources used by the chipset Refer to http://developer.intel.com Chapter 2
Intel 845GE Graphics Subsystem
The Intel 845GE chipset contains two separate, mutually exclusive graphics options. Either the Intel Extreme Graphics controller (contained within the 82845GE GMCH) is used, or an AGP add-in card can be used. When an AGP add-in card is installed, the Intel Extreme Graphics controller is disabled.

1.8.1.1

Intel Extreme Graphics Controller
Integrated graphics controller 32 bpp (Bits Per Pixel) graphics engine 266 MHz core frequency 256-bit internal data path for 2-D and 3-D graphics Motion video acceleration 3-D graphics visual and texturing enhancement Display Integrated 24-bit 350 MHz RAMDAC DDC2B compliant interface Video Dual monitor synchronous display Hardware motion compensation for software MPEG2 decode Two multiplexed DVO port interfaces with 165 MHz pixel clocks using an AGP Digital Display (ADD) card Dynamic Video Memory Technology (DVMT) support up to 64 MB
Refer to Section 1.8.1.2, page 31
The Intel Extreme Graphics controller features the following:
For information about DVMT
EMC emission testing of high-speed video was performed on this Desktop Board using scrolling Hs displayed on the video monitor in accordance with ANSI C63.4-2000 documentation. The scrolling Hs are displayed using the following font sizes: For video resolutions greater than 1600 x 1200 (including 2048 x 1536 and 1920 x 1440), a font size of 200% is used. For a 1600 x 1200 video resolution, a 150% font size is used. For resolutions less than 1600 x 1200, a normal or large font size is used.
All available resolutions are tested using the highest available color depth and monitor refresh rate.
Table 8 lists the Direct Draw supported modes.

Table 8.

Resolution 320 x 200
Direct Draw Supported Modes
Color Palette 256 colors 64 K colors 16 M colors 256 colors 64 K colors 16 M colors 256 colors 64 K colors 16 M colors 256 colors 64 K colors 16 M colors 256 colors 64 K colors 16 M colors 256 colors 64 K colors 16 M colors 256 colors 64 K colors 16 M colors Refresh Frequency (Hz) 70

The GMCH routes two 12-bit multiplexed DVO ports that are each capable of driving a 165 MHz pixel clock to the AGP connector. The DVO ports can be paired for dual channel mode. In dual channel mode, the GMCH is capable of driving a 24-bit 330 MHz pixel clock. When an AGP addin card is used, the Intel Extreme Graphics controller is disabled and the AGP connector operates in AGP mode. When an ADD card is detected, the Intel Extreme Graphics controller is enabled and the AGP connector is configured for DVO mode. DVO mode enables the DVO ports to be accessed by an ADD card. ADD cards can support up to two display devices with the following configurations: TV-Out Transition Minimized Differential Signaling (TMDS) Low Voltage Differential Signaling (LVDS) Single device operating in dual channel mode
Synchronous display is not supported when one of the display devices is a TV. Digital Visual Interface (DVI) support is present only when an ADD card is installed.
The Desktop Boards support up to six USB 2.0 ports and fully support UHCI and EHCI and use UHCI- and EHCI-compatible drivers. For more than six USB devices, an external hub can be connected to any of the ports. The ICH4 provides the USB controller for all ports, as shown in Figure 7. The port arrangement is as follows: Two ports are implemented with stacked back panel connectors, adjacent to the PS/2 connectors Two ports are implemented with stacked back panel connectors, adjacent to the audio connectors Two ports are routed to the front panel USB connector

USB ports (2)

Back panel USB connectors adjacent to the PS/2 ports Back panel USB connectors adjacent to the audio connectors
82801DB I/O Controller Hub (ICH4)
Front panel USB connectors

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Figure 7. USB Port Configuration
Computer systems that have an unshielded cable attached to a USB port may not meet FCC Class B requirements, even if no device is attached to the cable. Use shielded cable that meets the requirements for full-speed devices.
For information about The location of the USB connectors on the back panel The location of the front panel USB connector The EHCI, front panel, UHCI, and USB specifications Refer to Figure 12, page 60 Figure 17, page 69 Section 1.5, page 20

1.8.3.1

IDE Support

IDE Interfaces

The ICH4s IDE controller has two independent bus-mastering IDE interfaces that can be independently enabled. The IDE interfaces support the following modes: Programmed I/O (PIO): processor controls data transfer. 8237-style DMA: DMA offloads the processor, supporting transfer rates of up to 16 MB/sec. Ultra DMA: DMA protocol on IDE bus supporting host and target throttling and transfer rates of up to 33 MB/sec. ATA-66: DMA protocol on IDE bus supporting host and target throttling and transfer rates of up to 66 MB/sec. ATA-66 protocol is similar to Ultra DMA and is device driver compatible. ATA-100: DMA protocol on IDE bus allows host and target throttling. The ICH4s ATA-100 logic can achieve read transfer rates up to 100 MB/sec and write transfer rates up to 88 MB/sec.
ATA-66 and ATA-100 are faster timings and require a specialized cable to reduce reflections, noise, and inductive coupling. The IDE interfaces also support ATAPI devices (such as CD-ROM drives) and ATA devices using the transfer modes listed in Section 4.4.4.1 on page 104. The BIOS supports Logical Block Addressing (LBA) and Extended Cylinder Head Sector (ECHS) translation modes. The drive reports the transfer rate and translation mode to the BIOS. The Desktop Boards support Laser Servo (LS-120) diskette technology through the IDE interfaces. An LS-120 drive can be configured as a boot device by setting the BIOS Setup programs Boot menu to one of the following: ARMD-FDD (ATAPI removable media device floppy disk drive) ARMD-HDD (ATAPI removable media device hard disk drive)
Refer to Figure 15, page 67 Figure 16, page 68
For information about The location of the IDE connectors on the D845GERG2 board The location of the IDE connectors on the D845GEBV2 board

1.8.3.2

SCSI LED Connector
The SCSI LED connector is a 1 x 2-pin connector that allows an add-in SCSI controller (or other add-in card hard drive controller) to use the same LED as the onboard IDE controller. For proper operation, this connector should be wired to the LED output of the add-in SCSI controller. The LED indicates when data is being read from, or written to, both the add-in SCSI controller and the IDE controller.
For information about The location of the SCSI LED connector on the D845GERG2 board The location of the SCSI LED connector on the D845GEBV2 board The signal names of the SCSI LED connector Refer to Figure 15, page 67 Figure 16, page 68 Table 34, page 68
Real-Time Clock, CMOS SRAM, and Battery

For information about CNR audio upgrade cards Refer to http://developer.intel.com/technology/cnr/
If you install a CNR card that cannot support a multichannel audio upgrade, the Desktop Boards integrated audio codec will be disabled. This only applies to D845GEBV2 and D845GERG2 boards that have both the onboard audio subsystem and a CNR. The brand and type of audio codec used on the CNR card must match that of the Desktop Boards codec (Analog Devices AD1981B). Check with your CNR vendor to ensure that the CNR card has been tested with ICH4-based systems. There is no USB interface routed to the CNR connector.
For information about Obtaining the CNR specification
1.13 Hardware Management Subsystem
The hardware management features enable the Desktop Boards to be compatible with the Wired for Management (WfM) specification. The Desktop Board has several hardware management features, including the following: Fan monitoring and control (through the I/O controller or the hardware monitoring and fan control ASIC) Thermal and voltage monitoring Chassis intrusion detection
For information about The WfM specification

1.13.1

Hardware Monitoring ASICs
A hardware monitoring ASIC A hardware monitoring and fan control ASIC
The Desktop Boards provide one of the following:
The features of these components are described in this section. Contact your Intel sales representative to determine which type of hardware monitoring ASIC is present on your Intel Desktop Board.

1.13.1.1

Hardware Monitoring ASIC
Internal ambient temperature sensor Remote thermal diode sensor for direct monitoring of processor temperature Power supply monitoring of four voltages (+5 V, +3.3 VSB, +1.5 V, and +VCCP) to detect levels above or below acceptable values SMBus interface
Refer to Figure 10, page 43
The features of the hardware monitoring ASIC include:
For information about The location of the fan connectors and sensors for thermal monitoring

2.8.2.2

Audio, Power, and Hardware Control Connectors
Figure 13 shows the location of the audio, power, and hardware control connectors.

A B C D E

Item A B C D E F G H I Description Front panel audio Auxiliary line in, ATAPI style (white) Rear chassis fan ATAPI CD-ROM (black) +12 V power connector (ATX12V) Processor fan Main power Chassis intrusion Front chassis fan

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For more information see: Table 25 Table 26 Table 27 Table 28 Table 29 Table 30 Table 31 Table 32 Table 33
Figure 13. Audio, Power, and Hardware Control Connectors
Figure 14 shows the location of the audio, power, and hardware control connectors on the Desktop Board D845GERG2 with the Gigabit Ethernet LAN option.

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Item A B C D E F G H I
Description Front panel audio Auxiliary line in, ATAPI style (white) Rear chassis fan ATAPI CD-ROM (black) +12 V power connector (ATX12V) Processor fan Main power Chassis intrusion Front chassis fan
Figure 14. Audio, Power, and Hardware Control Connectors on the Desktop Board D845GERG2 with the Gigabit Ethernet LAN option

Table 25.

Signal Name MIC_IN MIC_BIAS RIGHT_OUT Ground LEFT_OUT Pin 10 Signal Name Ground +5 V RIGHT_IN Key LEFT_IN

Table 26.

Pin 3 4
Signal Name Left auxiliary line in Ground Ground Right auxiliary line in

Table 27.

Rear Chassis Fan Connector
Signal Name (Note) +12 V REAR_TACH_OUT
Pin 1 is Control if the Desktop Board uses the hardware monitoring and fan control ASIC. Pin 1 is Ground if the Desktop Board uses the hardware monitoring ASIC.

Table 28.

ATAPI CD-ROM Connector
Signal Name Left audio input from CD-ROM CD audio differential ground CD audio differential ground Right audio input from CD-ROM
Use only ATX12V-compliant power supplies with these boards. ATX12V power supplies have an additional power lead that provides required supplemental power for the processor. Always connect the 20-pin and 4-pin leads of ATX12V power supplies to the corresponding connectors on the board, otherwise the board will not boot. Do not use a standard ATX power supply. The board will not boot with a standard ATX power supply.

ATX12V Power Connector

Signal Name Ground +12 V Pin Signal Name Ground +12 V

Table 29.

Pin 1 3

Table 30.

Processor Fan Connector
Signal Name (Note) +12 V CPU_FAN_TACH

Table 31.

Pin 9 10

Main Power Connector

The I/O shield drawings in this document are for reference only. An I/O shield compliant with the ATX chassis specification 2.03 is available from Intel.

6.390 REF [162.300]

0.063 0.005 [1.600 0.120]
0.787 3x Dia 0.039 [1.000] 0.884 [22.450] 0.276 [7.012] 0.000 [0.000] 0.465 [11.811] 0.567 [14.400]

0.010 TYP [20

0.254] 3x Dia 0.330 [8.380] 8X R0.5 MIN
0.519 [13.190] 0.027 [0.690] 0.465 [11.810] 0.472 [12.000]

2.081 [52.854]

3.219 [81.768]

4.840 [122.950]

5.771 [146.577]

Pictorial View

1.195 [30.360]

0.447 [11.345]

1.807 [45.892]

0.000 [0.000]

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Figure 21. I/O Shield Dimensions (for Desktop Boards with the LAN Subsystem)

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Figure 22. I/O Shield Dimensions (for Desktop Boards with no LAN Subsystem)
2.11 Electrical Considerations

2.11.1

Power Consumption
Table 42 lists voltage and current measurements for a computer that contains the Desktop Board D845GEBV2/D845GERG2 and the following: 2.80 GHz Intel Pentium 4 processor with a 512 KB cache 64 MB AGP add-in card 256 MB DDR 333 SDRAM 3.5-inch diskette drive 10 GB IDE hard disk drive 6.2 X IDE CD-ROM/32 X CD-ROM drive
This information is provided only as a guide for calculating approximate power usage with additional resources added. Values for the Windows XP desktop mode are measured at 640 x 480 x 256 colors and 60 Hz refresh rate. AC watts are measured with the computer is connected to a typical 300 W power supply, at nominal input voltage and frequency, with a true RMS wattmeter at the line input.
Actual system power consumption depends upon system configuration. The power supply should comply with the recommendations found in the ATX/ATX12V Power Supply Design Guide, Version 1.1 (see Section 1.5 on page 20 for specification information).

Table 42.

Mode ACPI S0 ACPI S1 ACPI S3 ACPI S5

Power Usage

DC Current at: AC Power 163.0 W 93.0 W 3.6 W 3.1 W +3.3 V 5.68 A 4.04 A 0A 0A +5 V 1.52 A 0.51 A 0 mA 0 mA +12 V 7.24 A 2.75 A 0A 0A -12 V 67 mA 38 mA 0 mA 0 mA +5 VSB 396 mA 152 mA 370 mA 290 mA

2.11.2

Add-in Board Considerations
The Desktop Boards D845GEBV2 and D845GERG2 are designed to provide 2 A (average) of +5 V current for each add-in board. The total +5 V current draw for add-in boards is as follows: For a fully loaded Desktop Board D845GEBV2 (all seven expansion slots filled), the total +5 V current draw must not exceed 14 A. For a fully loaded Desktop Board D845GERG2 (all four expansion slots filled), the total +5 V current draw must not exceed 8 A.

2.11.3

Standby Current Requirements
If the standby current necessary to support multiple wake events from the PCI and/or USB buses exceeds power supply capacity, the Desktop Boards D845GEBV2 and D845GERG2 may lose register settings stored in memory, etc. Calculate the standby current requirements using the steps described below. Power supplies used with the Desktop Boards D845GEBV2 and D845GERG2 must be able to provide enough standby current to support the Instantly Available PC (ACPI S3 sleep state) configuration as outlined in Table 43 below. Values are determined by specifications such as PCI 2.2. Actual measured values may vary. To estimate the amount of standby current required for a particular system configuration, standby current requirements of all installed components must be added to determine the total standby current requirement. Refer to the descriptions in Table 43 and review the following steps. 1. Note the total Desktop Board D845GEBV2 or D845GERG2 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 number of wake-enabled devices installed (PCI and AGP) and multiply by the standby current requirement. 4. Add, from the PCI 2.2 slots (nonwake enabled) row, the total number of wake-enabled devices installed (PCI and AGP) and multiply by the standby current requirement. 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 43. Standby Current Requirements
Description Total for Desktop Board D845GEBV2/D845GERG2 PS/2 ports

(Note)

Instantly Available PC Current Support (Estimated for Integrated Board Components) Instantly Available PC Stand-by Current Support Estimated for add-on components Add to Instantly Available PC total current requirement
Standby Current Requirements (mA) 375 500
PCI 2.2 slots (wake enabled) PCI 2.2 slots (nonwake enabled) CNR (Note) USB ports

(See instructions above)

Note: Dependent upon system configuration
IBM PS/2 Port Specification (Sept 1991) states: 275 mA for keyboard 70 mA for the mouse (nonwake-enable device) PCI/AGP requirements are calculated by totaling the following: One wake-enabled device @ 375 mA, plus Five nonwake-enabled devices @ 20 mA each, plus USB requirements are calculated as: One wake-enabled device @ 500 mA USB hub @ 100 mA Three USB nonwake-enabled devices connected @ 2.5 mA each
Both USB ports are capable of providing up to 500 mA during normal G0/S0 operation. Only one USB port will support up to 500 mA of stand-by-current (wake-enabled device) during G1/S3 suspended operation. The other port may provide up to 7.5 mA (three nonwake-enabled devices.) during G1/S3 suspended operation.

For information about The Desktop Boards compliance level with Plug and Play Refer to Section 1.5, page 20
3.2 BIOS Flash Memory Organization
The Firmware Hub (FWH) includes a 4 Mbit (512 KB) symmetrical flash memory device. Internally, the device is grouped into eight 64-KB blocks that are individually erasable, lockable, and unlockable.
3.3 Resource Configuration
3.3.1 PCI Autoconfiguration
The BIOS can automatically configure PCI devices. PCI devices may be onboard or add-in cards. Autoconfiguration lets a user insert or remove PCI cards without having to configure the system. When a user turns on the system after adding a PCI card, the BIOS automatically configures interrupts, the I/O space, and other system resources. Any interrupts set to Available in Setup are considered to be available for use by the add-in card. Autoconfiguration information is stored in ESCD format. For information about the versions of PCI and Plug and Play supported by the BIOS, see Section 1.5.

PCI IDE Support

If you select Auto in the BIOS Setup program, the BIOS automatically sets up the two PCI IDE connectors with independent I/O channel support. The IDE interface supports hard drives up to ATA-66/100 and recognizes any ATAPI compliant devices, including CD-ROM drives, tape drives, and Ultra DMA drives (see Section 1.5 for the supported version of ATAPI). The BIOS determines the capabilities of each drive and configures them to optimize capacity and performance. To take advantage of the high capacities typically available today, hard drives are automatically configured for Logical Block Addressing (LBA) and to PIO Mode 3 or 4, depending on the capability of the drive. You can override the auto-configuration options by specifying manual configuration in the BIOS Setup program. To use ATA-66/100 features the following items are required: An ATA-66/100 peripheral device An ATA-66/100 compatible cable ATA-66/100 operating system device drivers
ATA-66/100 compatible cables are backward compatible with drives using slower IDE transfer protocols. If an ATA-66/100 disk drive and a disk drive using any other IDE transfer protocol are attached to the same cable, the maximum transfer rate between the drives is reduced to that of the slowest device.
Do not connect an ATA device as a slave on the same IDE cable as an ATAPI master device. For example, do not connect an ATA hard drive as a slave to an ATAPI CD-ROM drive.
Overview of BIOS Features
3.4 System Management BIOS (SMBIOS)
SMBIOS is a Desktop Management Interface (DMI) compliant method for managing computers in a managed network. The main component of SMBIOS is the Management Information Format (MIF) database, which contains information about the computing system and its components. Using SMBIOS, a system administrator can obtain the system types, capabilities, operational status, and installation dates for system components. The MIF database defines the data and provides the method for accessing this information. The BIOS enables applications such as third-party management software to use SMBIOS. The BIOS stores and reports the following SMBIOS information: BIOS data, such as the BIOS revision level Fixed-system data, such as peripherals, serial numbers, and asset tags Resource data, such as memory size, cache size, and processor speed Dynamic data, such as event detection and error logging

Auto (default) An * (asterisk) displayed next to an address indicates a conflict with another device. Mode Output Only Bi-directional (default) EPP ECP Selects the mode for the parallel port. Not available if the parallel port is disabled. Output Only operates in AT-compatible mode. Bi-directional operates in PS/2-compatible mode. EPP is Extended Parallel Port mode, a high-speed bi-directional mode. ECP is Enhanced Capabilities Port mode, a high-speed bidirectional mode. continued
Peripheral Configuration Submenu (continued)
Options 378 (default) 278 Description Specifies the base I/O address for the parallel port.
Base I/O address (This feature is present only when Parallel Port is set to Enabled) Interrupt (This feature is present only when Parallel Port is set to Enabled) DMA (This feature is present only when Parallel Port Mode is set to ECP) Audio
IRQ 5 IRQ 7 (default) (default)
Specifies the interrupt for the parallel port.
Specifies the DMA channel.
Enabled (default) Disabled Disabled Enabled (default)
Enables or disables the onboard audio subsystem. For boards with no onboard audio subsystem, this option does not appear. Enables or disables the onboard LAN device. For boards with no onboard LAN subsystem, this option will not appear.

LAN Device

IDE Configuration Submenu
To access this submenu, select Advanced on the menu bar and then IDE Configuration.
The menu represented in Table 59 is used to configure IDE device options.

Table 59.

Feature IDE Controller
Options Disabled Primary Secondary Both (default) Description Specifies the integrated IDE controller. Primary enables only the primary IDE controller. Secondary enables only the secondary IDE controller. Both enables both IDE controllers. Enables/disables the use of DMA for hard drive BIOS INT13 reads and writes. Specifies the hard disk drive pre-delay.
PCI IDE Bus Master Hard Disk Pre-Delay
Disabled Enabled (default) Disabled (default) 3 Seconds 6 Seconds 9 Seconds 12 Seconds 15 Seconds 21 Seconds 30 Seconds
Primary IDE Master Primary IDE Slave Secondary IDE Master Secondary IDE Slave
Select to display sub-menu Select to display sub-menu Select to display sub-menu Select to display sub-menu
Reports type of connected IDE device. Reports type of connected IDE device. Reports type of connected IDE device. Reports type of connected IDE device.

4.4.4.1

Primary/Secondary IDE Master/Slave Submenus
To access these submenus, select Advanced on the menu bar, then IDE Configuration, and then the master or slave to be configured.
PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Primary IDE Master Primary IDE Slave Secondary IDE Master Secondary IDE Slave Diskette Configuration Event Log Configuration Video Configuration USB Configuration Chipset Configuration Fan Control Configuration

Disabled Enabled (default) Select to display submenu Select to display submenu Select to display submenu Select to display submenu
Boot Device Priority Submenu
To access this menu, select Boot on the menu bar and then Boot Devices Priority.
The submenu represented in Table 71 is for setting boot devices priority.

Table 71.

Feature 1 Boot Device 2 Boot Device 3 Boot Device 4 Boot Device

th rd nd st

Options Removable Dev. Hard Drive ATAPI CD-ROM Intel Boot Agent
Description Specifies the boot sequence according to the device type. The computer will attempt to boot from up to five devices as specified here. Only one of the devices can be an IDE hard disk drive. To specify boot sequence: 1. 2. Select the boot device with <> or <>. Press <Enter> to set the selection as the intended boot device.

Disabled

The default settings for the first through fourth boot devices are, respectively: Removable Dev. Hard Drive ATAPI CD-ROM Intel Boot Agent
Note: The boot device identifier for Intel Boot Agent (IBA) may vary depending on the BIOS release.

Hard Disk Drives Submenu

To access this menu, select Boot on the menu bar and then Hard Disk Drives.
The submenu represented in Table 72 is for setting hard disk drive priority.

Table 72.

Feature 1 Hard Disk Drive
Options Dependent on installed hard drives Description Specifies the boot sequence from the available hard disk drives. To specify boot sequence: 1. 2. Select the boot device with <> or <>. Press <Enter> to set the selection as the intended boot device.
This boot device submenu appears only if at least one boot device of this type is installed. This list will display up to twelve hard disk drives, the maximum number of hard disk drives supported by the BIOS.
Removable Devices Submenu
To access this menu, select Boot on the menu bar, then Removable Devices.
The submenu represented in Table 73 is for setting removable device priority.

Table 73.

Feature 1 Removable Device
Options Dependent on installed removable devices Description Specifies the boot sequence from the available removable devices. To specify boot sequence: 1. 2. Select the boot device with <> or <>. Press <Enter> to set the selection as the intended boot device.
This boot device submenu appears only if at least one boot device of this type is installed. This list will display up to four removable devices, the maximum number of removable devices supported by the BIOS.
ATAPI CD-ROM Drives Submenu
To access this menu, select Boot on the menu bar and then ATAPI CD-ROM Drives.
The submenu represented in Table 74 is for setting ATAPI CD-ROM drive priority.

Table 74.

Feature 1 ATAPI CDROM

5.4 Speaker

A 47 inductive speaker is mounted on the Desktop Board D845GEBV2 and the Desktop Board D845GERG2. The speaker provides audible error code (beep code) information during POST.
For information about The location of the onboard speaker on the Desktop Board D845GEBV2 The location of the onboard speaker on the Desktop Board D845GERG2 Refer to Figure 1, on page 14 Figure 2, on page 15

5.5 BIOS Beep Codes

Whenever a recoverable error occurs during POST, the BIOS displays an error message describing the problem (see Table 83). The BIOS also issues a beep code (one long tone followed by two short tones) during POST if the video configuration fails (a faulty video card or no card installed) or if an external ROM module does not properly checksum to zero. An external ROM module (for example, a video BIOS) can also issue audible errors, usually consisting of one long tone followed by a series of short tones. For more information on the beep codes issued, check the documentation for that external device. There are several POST routines that issue a POST terminal error and shut down the system if they fail. Before shutting down the system, the terminal-error handler issues a beep code signifying the test point error, writes the error to I/O port 80h, attempts to initialize the video and writes the error in the upper left corner of the screen (using both monochrome and color adapters).
If POST completes normally, the BIOS issues one short beep before passing control to the operating system.

Table 83.

Beep 11

Beep Codes

Description Refresh failure Parity cannot be reset First 64 KB memory failure Timer not operational Not used 8042 GateA20 cannot be toggled Exception interrupt error Display memory R/W error Not used CMOS Shutdown register test error Invalid BIOS (e.g. POST module not found, etc.)

Intel Desktop Board D845GERG2 Specification Update
Release Date: November 2003 Order Number: C21701-007
The Intel Desktop Board D845GERG2 may contain design defects or errors known as errata, which may cause the product to deviate from published specifications. Current characterized errata are documented in this Specification Update.
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTELS 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 PRODUCTS ARE NOT INTENDED FOR USE IN MEDICAL, LIFE SAVING, LIFE SUSTAINING APPLICATIONS. Intel may make changes to specifications and product descriptions at any time, without notice. Designers must not rely on the absence or characteristics of any features or instructions marked reserved or undefined. Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them. The Intel desktop board D845GERG2 may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request. Contact your local Intel sales office or your distributor to obtain the latest specifications before placing your product order. Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be obtained from: Intel Corporation P.O. Box 5937 Denver, CO 80217-9808 or call in North America 1-800-548-4725, Europe 44-0-1793-431-155, France 44-0-1793-421-777, Germany 44-0-1793-421-333, other Countries 708-296-9333 Intel, Pentium, Celeron, and the Intel logo are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. * Other names and brands may be claimed as the property of others. Copyright 2002, 2003, Intel Corporation.

CONTENTS

REVISION HISTORY.....v PREFACE..... vi
Specification Update for the Intel Desktop Board D845GERG2
GENERAL INFORMATION....3 ERRATA.....5 SPECIFICATION CLARIFICATIONS...8 DOCUMENTATION CHANGES.....10

REVISION HISTORY

Date of Revision November 2002 December 2002 February 2003 March 2003 April 2003 October 2003 November 2003 Version -001 -002 -003 -004 -005 -006 -007 Description This document is the first Specification Update for the Intel Desktop Board D845GERG2. Added Erratum 1. Added Erratum 2. Added Erratum 35. Added Documentation Change 1. Added Errata 6-8. Added Documentation Change 2-3. Added Documentation Change 4. Added Erratum 9. Added Specification Clarification 1.

PREFACE

This document is an update to the specifications contained in the Intel Desktop Board D845GEBV2/D845GERG2 Technical Product Specification (Order Number C14584). It is intended for hardware system manufacturers and software developers of applications, operating systems, or tools. It will contain Specification Changes, Errata, Specification Clarifications, and Documentation Changes. Refer to the Intel Pentium 4 Processor Specification Update (Order Number 249199) for specification updates concerning the Intel Pentium 4 processor and that may apply to the desktop board D845GERG2. Unless otherwise noted in this document, it should be assumed that any processor errata for a given stepping are applicable to the Altered Assembly (AA) revision(s) associated with that stepping. Refer to the Intel 845GE/845PE Chipset Specification Update (Order Number 251955) for specification updates concerning the 82845GE MCH Controller and that may apply to the desktop board D845GERG2. Unless otherwise noted in this document, it should be assumed that any MCH errata for a given stepping are applicable to the Altered Assembly (AA) revision(s) associated with that stepping. Refer to the Intel 82801DB I/O Controller Hub 4 (ICH4) Specification Update (Order Number 290745) for specification updates concerning the 82801DB I/O Controller Hub and that may apply to the desktop board D845GERG2. Unless otherwise noted in this document, it should be assumed that any ICH 4 errata for a given stepping are applicable to the Altered Assembly (AA) revision(s) associated with that stepping.

Nomenclature

Specification Changes are modifications to the current published specifications. These changes will be incorporated in the next release of the specifications. Errata are design defects or errors. Characterized errata may cause the desktop board D845GERG2s behavior to deviate from published specifications. Hardware and software designed to be used with any given Altered Assembly (AA) and BIOS revision level must assume that all errata documented for that AA and BIOS revision level are present on all desktop boards. Specification Clarifications describe a specification in greater detail or further highlight a specifications impact to a complex design situation. These clarifications will be incorporated in the next release of the specifications. Documentation Changes include typos, errors, or omissions from the current published specifications. These changes will be incorporated in the next release of the specifications.

GENERAL INFORMATION

Basic Desktop Board D845GERG2 Identification Information AA Revision A97496-103 A97496-104 A97496-105 A97496-106 A97496-107 A97833-102 A97833-103 A97833-104 A97833-105 A97833-106 A97833-107 A97835-102 A97835-103 A97835-104 A97835-105 A97835-106 A97835-107 BIOS Revision RG84510A.86A.0017.P09 RG84510A.86A.0019.P11 RG84510A.86A.0022.P12 RG84510A.86A.0028.P15 RG84510A.86A.0028.P15 RG84510A.86A.0017.P09 RG84510A.86A.0019.P11 RG84510A.86A.0019.P11 RG84510A.86A.0022.P12 RG84510A.86A.0028.P15 RG84510A.86A.0028.P15 RG84510A.86A.0017.P09 RG84510A.86A.0017.P09 RG84510A.86A.0019.P11 RG84510A.86A.0022.P12 RG84510A.86A.0028.P15 RG84510A.86A.0028.P15 Notes 1-5 1-5 1-5 1-5 1-5 1-5 1-5 1-5 1-5 1-5 1-5 1-5 1-5 1-5 1-5 1-5 1-5
NOTES: 1. The AA number is found on a small label on the component side of the board. 2. The 82845G Chipset kit used on this AA revision consists of three components as follows:
Device RG82845GE GMCH 82801DB ICH 82802AB FWH

3. 4. 5.

Stepping B1 B0 A0 A1
S-Spec Numbers SL6PS SL6DM SB48
Refer to the Intel Pentium 4 Processor Specification Update (Order Number 249199) for errata related to the Pentium 4 processor and that may apply to the desktop board D845GERG2. Refer to the Intel 845GE/845PE Chipset Specification Update (Order Number 251955) for errata related to the RG82845GE GMCH that may apply to the desktop board D845GERG2. Refer to the Intel 82801DB I/O Controller Hub 4 (ICH4) Specification Update (Order Number 290745) for errata related to the 82802DB I/O Controller Hub that may apply to the desktop board D845GERG2.

Summary Table of Changes

The following table indicates the Specification Changes, Errata, Specification Clarifications, or Documentation Changes that apply to the desktop board D845GERG2. Intel intends to fix some of the errata in a future revision of the desktop board, and to account for the other outstanding issues through documentation or specification changes as noted. This table uses the following notations: CODES USED IN SUMMARY TABLE Doc: PlanFix: Fixed: NoFix: Shaded: NO. 9 NO. 1 NO. PLANS Plan Fix Fixed Plan Fix Plan Fix Plan Fix Plan Fix Plan Fix Plan Fix Fixed PLANS Doc PLANS Doc Doc Doc Doc Document change or update that will be implemented. This erratum may be fixed in a future revision of the desktop board, driver, or BIOS. This erratum has been previously fixed. There are no plans to fix this erratum. This erratum is either new or modified from the previous version of the document. ERRATA Detected chassis intrusion does not log event to the BIOS Event Log in BIOS setup Fan control defaults incorrectly set in BIOS for onboard hardware management ASIC Sound Distortion May Occur When Recording While Using The Back Panel Onboard Microphone Connector The onboard audio solution may produce an audible buzzing sound, heard through the speakers, when moving a desktop window with a mouse in Microsoft Windows* XP Intel 82801DB I/O Controller Hub 4 (ICH 4) Erratum 8 Chassis intrusion event is not logged in the Advanced menu of the Bios Event Log Viewer When some non-alpha numeric characters are used for the Supervisor password to enter BIOS SETUP, the password cannot be changed without clearing all BIOS passwords Supervisor password cleared when 256MB or greater system memory is used Some UDMA 6 hard disk drives may not operate properly SPECIFICATION CLARIFICATIONS Clarification of SMBus routing DOCUMENTATION CHANGES Change to description of Table 20, Section 2.8.2.2, Audio, Power, and Hardware Control Connectors Removed Note that specifies USB 2.0 support limited to Windows 2000 and Windows XP from Section 1.7.2, USB Removed ESCD format reference from Section 3.3.1, PCI Autoconfiguration Add Alert Standard Format Specification Version 1.03 Dated June 20, 2001 to Section 1.5, Design Specifications.

ERRATA

1. Detected Chassis Intrusion Does Not Log Event to the BIOS Event Log in BIOS Setup
PROBLEM: When a chassis intrusion is detected, with chassis intrusion enabled in the Security Menu of the BIOS Setup, the event is not recorded to the BIOS setup Event Log. IMPLICATION: Users that wish to take advantage of the chassis intrusion feature will not see a chassis
intrusion event detected logged to the event log in the BIOS setup menu. NOTE: If the Log, Notify Once or Log, Notify til Cleared features are set, the event will create a POST error and notify the user.
WORKAROUND: None. STATUS: This erratum may be fixed in a future BIOS revision.
Fan Control Defaults Incorrectly Set in BIOS for Onboard Hardware Management ASIC
PROBLEM: Default BIOS settings on desktop boards that implement the Intel Precision Cooling Technology
fan control are incorrect, which could result in improper system cooling.
IMPLICATION: The maximum front and rear system chassis fan speeds are limited to 30% of maximum,
irrespective of the actual chassis temperature. Under certain circumstances, this fan speed limitation may not provide adequate system cooling. NOTE: The CPU fan is not controllable by the desktop board and is not directly impacted.
WORKAROUND: Disable fan control by changing the FAN CONTROL setting to Disabled in the BIOS setup
menu under the ADVANCED tab, FAN CONFIGURATION menu. This will allow the system fans to run at full speed, which will allow maximum system cooling.
STATUS: This erratum was fixed in BIOS revision RG84510A.86A.0019.P11
Sound Distortion May Occur When Recording While Using The Back Panel Onboard Microphone Connector
PROBLEM: When using the microphone connector on the back panel for recording and with the volume control adjusted above 50 percent, a background noise in the 50 Hz to 60 Hz range may be audible. IMPLICATION: Users that desire to record using the back panel microphone connector may observe noise
distortion, especially if the volume control is increased above 50 percent.
WORKAROUND: None. STATUS: This erratum may be fixed in a future revision of the desktop board.

The Onboard Audio Solution May Produce an Audible Buzzing Sound, Heard Through The Speakers, When Moving a Desktop Window with a Mouse in Microsoft Windows* XP
PROBLEM: While moving a desktop window with a mouse in Microsoft Windows XP, the user may hear an audible buzzing noise from the speakers. This is especially apparent with the volume control turned up high. IMPLICATION: Using an increased volume setting while using the onboard audio solution may result in a
noticeable buzzing noise heard through the speakers in Microsoft Windows XP when the user moves a desktop window with the mouse.
Intel 82801DB I/O Controller Hub 4 (ICH 4) Erratum 8
PROBLEM: For a complete description of the ICH 4 erratum 8, see the Intel 82801DB I/O Controller Hub 4
(ICH 4) Specification Update, order number 290745 found at http://developer.intel.com/design/chipsets/specupdt.
IMPLICATION: For a complete description of the ICH 4 erratum 8, see the Intel 82801DB I/O Controller Hub 4
WORKAROUND: None. STATUS: This erratum may be fixed in a future chipset stepping.
Chassis Intrusion Event is Not Logged in the Advanced Menu of the Bios Event Log Viewer
PROBLEM: If a chassis intrusion event is triggered, the event will be displayed at POST but is not logged as an event in the BIOS SETUP Advanced menu, Event Log Configuration menu, View Event Log. IMPLICATION: When chassis intrusion is enabled in the Security menu of the BIOS SETUP, and the options
log; log, notify once; or log, notify til cleared are set, the chassis intrusion will not be logged in the Advanced menu, Event Log Configuration menu, View Event Log.
When Some Non-Alpha Numeric Characters Are Used for the Supervisor Password to Enter BIOS SETUP, the Password Cannot be Changed Without Clearing All BIOS Passwords
PROBLEM: If non-alpha numeric characters are used in the Supervisor password to enter BIOS SETUP, the password cannot be changed without clearing all passwords. IMPLICATION: Non-alpha numeric characters cannot be used in the Supervisor password for entering BIOS

SETUP.

Supervisor Password Cleared When 256MB or Greater System Memory is Used
PROBLEM: If 256MB or more system memory is added to a system the Supervisor password is cleared. IMPLICATION: Supervisor password cannot be used with 256MB or more of system memory. WORKAROUND: None. STATUS: This erratum may be fixed in a future BIOS revision.

Some UDMA 6 Hard Disk Drives May Not Operate Properly
PROBLEM: Some ATA-133 (UDMA 6)hard disk drives may not be properly recognized by the system BIOS to set the proper drive setting for ATA-100 (UDMA 5) operation that is supported by the Intel D845GERG2 desktop board. IMPLICATION: If the ATA-133 hard disk drive is not properly set to UDMA 5 in the BIOS Setup/Advanced/IDE
Configuration submenu, the user may experience failed operating system installation or other data corruption issues.
WORKAROUND: In the BIOS Setup/Advanced/IDE Configuration sub menu, the UDMA setting can be manually changed to UDMA 5. STATUS: This issue was fixed in BIOS revision RG84510A.86A.0033.P17
SPECIFICATION CLARIFICATIONS
The Specification Clarifications listed in this section apply to the Intel Desktop Board D845GEBV2/D845GERG2 Technical Product Specification (Order Number C14584). All Specification Clarifications will be incorporated into a future version of that specification.
Clarification of SMBus Routing
Section 2.8.2.1 will change in its entirety as follows:

2.8.2.1

Expansion Slots
The board has the following expansion slots: One AGP connector. The AGP connector is keyed for 1.5 V AGP cards only. Do not install a legacy 3.3 V AGP card. The AGP connector is not mechanically compatible with legacy 3.3 V AGP cards. PCI rev 2.2 compliant local bus slots (six on the Desktop Board D845GEBV2, three on the Desktop Board D845GERG2). The SMBus is routed to PCI bus connector 2 only (ATX expansion slot 6). PCI add-in cards with SMBus support can access sensor data and other information residing on the Desktop Board. One CNR (optional), shared with PCI bus connector 6 (ATX expansion slot 1) on the Desktop Board D845GEBV2, or with PCI bus connector 3 (ATX expansion slot 1) on the Desktop Board D845GERG2.
The SMBus routing to the PCI bus connectors does not conform to the PCI Engineering Change Notice (ECN) Addition of the SMBus to the PCI Connector ECN, dated October 5th, 2000. The ECN specifies that SMBus signals must be routed to all PCI bus connectors. On this board, SMBus signals are routed to PCI bus connector 2 only. Add-in cards that implement PCI bus connector pins A40 and A41 for any purpose other than SMBCLK (SMBus clock) and SMBDAT (SMBus data) should not be installed in PCI bus connector 2.
For information about Addition of the SMBus to the PCI Connector ECN
Refer to http://www.pcisig.com/data/s pecifications/smb_ecn_0405 01.pdf
This document references back-panel slot numbering with respect to processor location on the board. The AGP slot is not numbered. PCI slots are identified as PCI slot #x, starting with the slot closest to the processor. The CNR slot shares an ATX expansion; slot 6 on the D845GEBV2 board and slot 3 on the D845GERG2 board. The ATX/MicroATX specifications identify expansion slot locations with respect to the far edge of a full-sized ATX chassis. The ATX specification and the boards silkscreen are opposite and could cause confusion. The ATX numbering convention is made without respect to slot type (PCI vs. AGP), but refers to an actual slot location on a chassis. Figure 15 (page 67) and Figure 16 (page 68) illustrate the boards PCI slot numbering.

DOCUMENTATION CHANGES

The Documentation Changes listed in this section apply to the Intel Desktop Board D845GEBV2/D845GERG2 Technical Product Specification (Order Number C14584). All Documentation Changes will be incorporated into a future version of that specification.
Change to Description of Table 20, Section 2.8.2.2, Audio, Power, and Hardware Control Connectors
Table 25, Section 2.8.2.2, Audio, Power, and Hardware Control Connectors will change in its entirety as follows:

Table 25.

Front Panel Audio Connector
Pin 10 Signal Name Ground +5 V RIGHT_IN Key LEFT_IN
Signal Name MIC_IN MIC_BIAS RIGHT_OUT Not Connected LEFT_OUT
Removed Note That Specifies USB 2.0 Support Limited to Windows 2000 and Windows XP From Section 1.7.2, USB
The following note will be removed in its entirety from Section 1.7.2, USB:
USB 2.0 support has been tested with Windows 2000 and Windows XP drivers and is not currently supported by any other operating system. Removed ESCD Format Reference From Section 3.3.1, PCI Autoconfiguration
Remove the sentence Autoconfiguration information is stored in ESCD format. from Section 3.3.1, PCI Autoconfiguration.
Add Alert Standard Format Specification Version 1.03 Dated June 20, 2001 to Section 1.5, Design Specifications
The following specification will be added to table 4, Section 1.5, Design Specifications:

Reference Name ASF

Specification Title Alert Standard Format Specification
Version, Revision Date, and Ownership Version 1.03, June 20, 2001, Distributed Management Task Force (DMTF).
The information is available from
http://www.dmtf.org/standards/ documents/ASF/DSP0114.pdf