Intel D850GB Technical Product Specification
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Intel D850GB Technical Product Specification

Intel D850GB Technical Product Specification

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Intel
Technical Product Specification
®
The Intel
Desktop Board D850GB may contain design defects or errors known as errata that may cause the product to deviate from published specifications. Current characterized
errata are documented in the Intel Desktop Board D850GB Specification Update.
®
Desktop Board D850GB
September 2000
Order Number A26080-001

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Summary of Contents for Intel D850GB

  • Page 1 Order Number A26080-001 ® The Intel Desktop Board D850GB may contain design defects or errors known as errata that may cause the product to deviate from published specifications. Current characterized errata are documented in the Intel Desktop Board D850GB Specification Update.
  • Page 2 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.
  • Page 3 Intended Audience The TPS is intended to provide detailed, technical information about the D850GB board and its components to the vendors, system integrators, and other engineers and technicians who need this level of information. It is specifically not intended for general audiences.
  • Page 4 When used in the description of a component, N indicates component type, xn are the relative coordinates of its location on the D850GB board, and X is the instance of the particular part at that general location. For example, J5J1 is a connector, located at 5J. It is the first connector in the 5J area.

  • Page 5: Table Of Contents

    Contents 1 Product Description Overview ........................12 1.1.1 Feature Summary ..................12 1.1.2 Manufacturing Options .................13 1.1.3 D850GB Board Layout .................14 1.1.4 Block Diagram....................15 Online Support ......................16 Design Specifications ....................16 Processor ........................19 System Memory ......................20 1.5.1 Memory Features ..................20 1.5.2 Continuity RIMM Modules ................20 1.5.3...
  • Page 6 Intel Desktop Board D850GB Technical Product Specification 2 Technical Reference Introduction.........................43 Memory Map ......................43 I/O Map ........................44 DMA Channels ......................46 PCI Configuration Space Map ..................46 Interrupts ........................47 PCI Interrupt Routing Map ..................47 Connectors .........................49 2.8.1 Back Panel Connectors................50 2.8.2 Internal I/O Connectors ................53 2.8.3...
  • Page 7 Diagnostic LEDs .......................118 Figures D850GB Board Components....................14 Block Diagram........................15 Intel 850 Chipset Block Diagram ..................22 Audio Subsystem Block Diagram ..................28 ICH2 and CNR Signal Interface ..................31 Using the Wake on LAN Technology Connector ..............39 Location of the Standby Power Indicator LED ..............40 Back Panel Connectors......................50...
  • Page 8 Intel Desktop Board D850GB Technical Product Specification 13. Location of the Jumper Blocks ...................69 14. D850GB Board Dimensions ....................71 15. I/O Shield Dimensions......................72 16. Localized High Temperature Zones ...................76 17. Diagnostic LEDs ......................118 Tables Feature Summary ......................12 Manufacturing Options .......................13 Specifications........................16...
  • Page 9 50. USB Port 2 Routing Jumper Settings (J8D1)..............70 51. Power Usage ........................73 52. Standby Current Requirements..................74 53. Thermal Considerations for Components................77 54. D850GB Board Environmental Specifications ..............78 55. Safety Regulations ......................79 56. EMC Regulations .......................79 57. Supervisor and User Password Functions................88 58.
  • Page 10 Intel Desktop Board D850GB Technical Product Specification...

  • Page 11: Product Description

    What This Chapter Contains Overview ........................12 Online Support ......................16 Design Specifications ....................16 Processor ........................19 System Memory ......................20 ® Intel 850 Chipset.......................22 I/O Controller ......................26 Audio Subsystem (Optional) ..................28 LAN Subsystem......................30 1.10 CNR (Optional) ......................31 1.11 Hardware Management Subsystem................32 1.12 Power Management ....................33...

  • Page 12: Overview

    • Five PCI bus add-in card connectors (SMBus routed to PCI bus connector 2) Expansion Capabilities • Intel/AMI BIOS (resident in the Intel 82802AB 4 Mbit FWH) BIOS • Support for Advanced Power Management (APM), Advanced Configuration and Power Interface (ACPI), Plug and Play, and SMBIOS...

  • Page 13: Manufacturing Options

    Product Description 1.1.2 Manufacturing Options Table 2 describes the D850GB board’s manufacturing options. Table 2. Manufacturing Options Audio (Integrated) Audio subsystem that uses the Analog Devices AD1881 analog codec for AC 97 processing Video AGP Pro50 interface (50 W maximum); backward compatible with 1.5 V AGP video cards ®...

  • Page 14: D850Gb Board Layout

    Intel Desktop Board D850GB Technical Product Specification 1.1.3 D850GB Board Layout Figure 1 shows the location of the major components on the D850GB board. OM10441 AD1881 audio codec (optional) Diskette drive connector AGP connector (AGP Pro50 connector IDE connectors optional)

  • Page 15: Block Diagram

    Product Description 1.1.4 Block Diagram Figure 2 is a block diagram of the major functional areas of the D850GB board. Diagnostic LEDs Primary/ ATA-33/66/100 Secondary IDE USB Ports 0 and 1 PGA423 System Bus USB Ports 2 and 3 Processor Socket...

  • Page 16: Online Support

    Custom splash screens http://intel.com/design/motherbd/gen_indx.htm Audio software and utilities http://www.intel.com/design/motherbd LAN software and drivers http://www.intel.com/design/motherbd 1.3 Design Specifications Table 3 lists the specifications applicable to the D850GB board. Table 3. Specifications Reference Specification Version, Revision Date, The information is Name...

  • Page 17: Specifications

    PCI Special Interest Group Plug and Plug and Play BIOS Version 1.0a, http://www.microsoft.com/ Play Specification May 5, 1994, hwdev/respec/ Compaq Computer Corp., pnpspecs.htm Phoenix Technologies Ltd., and Intel Corporation Preboot Execution Version 2.1, http://developer.intel.com/ Environment September 1999, ial/WfM/wfm20/design/ Intel Corporation mapxe/index.htm continued...
  • Page 18 Intel Desktop Board D850GB Technical Product Specification Table 3. Specifications (continued) Reference Specification Version, Revision Date The information is Name Title and Ownership available from… RIMM Rambus Serial Presence Version 1.0, http://www.rambus.com/ Detect (SPD) March 1999, developer/ Specification Rambus Corp.

  • Page 19: Processor

    Update for the most up-to-date list of supported processors for the D850GB board. The D850GB board supports a single Pentium 4 processor with a system bus frequency of 400 MHz. The D850GB board supports the processors listed in Table 4.

  • Page 20: System Memory

    Before installing or removing RIMM modules, remove AC power by unplugging the power cord from the computer. Failure to do so could damage the memory and the D850GB board. (After removing AC power the standby power indicator LED should not be lit. See Figure 7 on page 40 for the location of the standby power indicator LED.)

  • Page 21: Rdram Memory Configuration

    Product Description 1.5.3 RDRAM Memory Configuration When installing memory, note the following: • The four RIMM sockets are grouped into two banks:  Bank 0 (labeled on the board as RIMM1 and RIMM2)  Bank 1 (labeled on the board as RIMM3 and RIMM4) •...

  • Page 22: Intel ® 850 Chipset

    Intel Desktop Board D850GB Technical Product Specification ® 1.6 Intel 850 Chipset The Intel 850 chipset consists of the following devices: • 82850 Memory Controller Hub (MCH) with Accelerated Hub Architecture (AHA) bus • 82801BA I/O Controller Hub (ICH2) with AHA bus •...

  • Page 23: Agp

    The other two are accessible via the front panel USB connector at location J9C1. One of the front panel USB connectors can be routed to the optional CNR connector. The D850GB board fully supports UHCI and uses UHCI-compatible software drivers.

  • Page 24: Ide Support

    The drive reports the transfer rate and translation mode to the BIOS. The D850GB board supports laser servo (LS-120) diskette technology through its IDE interfaces. An LS-120 drive can be configured as a boot device by setting the BIOS Setup program’s Boot menu to one of the following: •...

  • Page 25: Real-Time Clock, Cmos Sram, And Battery

    RAM at power-on. NOTE The recommended method of accessing the date in systems with D850GB boards is indirectly from the Real-Time Clock (RTC) via the BIOS. The BIOS on D850GB boards contains a century checking and maintenance feature. This feature checks the two least 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.,...

  • Page 26: I/O Controller

    1.7.1 Serial Port The D850GB board has one serial port connector on the back panel. The serial port’s NS16C550- compatible UART supports data transfers at speeds up to 115.2 kbits/sec with BIOS support. The serial port can be assigned as COM1 (3F8h), COM2 (2F8h), COM3 (3E8h), or COM4 (2E8h).

  • Page 27: Diskette Drive Controller

    Product Description 1.7.3 Diskette Drive Controller The I/O controller supports one diskette drive that is compatible with the 82077 diskette drive controller and supports both PC-AT and PS/2 modes. For information about Refer to The location of the diskette drive connector Figure 11, page 59 The signal names of the diskette drive connector Table 42, page 64...

  • Page 28: Audio Subsystem (Optional)

    Intel Desktop Board D850GB Technical Product Specification 1.8 Audio Subsystem (Optional) CAUTION The pins on both the legacy-style 2-mm and the ATAPI CD-ROM connectors are wired to the same inputs on the audio mixer. Do not attach CD-ROM drives to both connectors, otherwise, the board or drives could be damaged.

  • Page 29: Audio Connectors

    Figure 9, page 54 The signal names of the auxiliary line in connector Table 25, page 55 1.8.2 Audio Subsystem Software Audio software and drivers are available from Intel’s World Wide Web site. For information about Refer to Obtaining audio software and drivers...

  • Page 30: Lan Subsystem

    1.9.1 Intel 82562EM Platform LAN Connect Device (Optional) The Intel 82562EM component provides an interface to the back panel RJ-45 connector with integrated LEDs. This physical interface may alternately be provided via the CNR connector. The Intel 82562EM provides the following functions: •...

  • Page 31: Lan Subsystem Software

    For information about Refer to Obtaining the CNR specification Section 1.3, page 16 CAUTION Do not install a LAN CNR board if the D850GB already has onboard LAN subsystem. Doing so could prevent the board from connecting to the LAN.

  • Page 32: Hardware Management Subsystem

    Intel Desktop Board D850GB Technical Product Specification 1.11 Hardware Management Subsystem The hardware management features enable the board to be compatible with the Wired for Management (WfM) specification. The board has several hardware management features, including the following: • Fan control and monitoring •...

  • Page 33: Power Management

    • † From the operating system, such as the Standby menu item in Windows In standby mode, the D850GB board can reduce power consumption by spinning down hard † drives, and reducing power to, or turning off of, VESA DPMS-compliant monitors. Power management mode can be enabled or disabled in the BIOS Setup program.

  • Page 34: Effects Of Pressing The Power Switch

    ACPI ACPI gives the operating system direct control over the power management and Plug and Play functions of a computer. The use of ACPI with the D850GB board requires an operating system that provides full ACPI support. ACPI features include: •...

  • Page 35: Power States And Targeted System Power

    The operating system uses information from applications and user settings to put the system as a whole into a low-power state. Table 8 lists the power states supported by the D850GB board along with the associated system power targets. See the ACPI specification for a complete description of the various system and power states.

  • Page 36: Wake Up Devices And Events

    Intel Desktop Board D850GB Technical Product Specification 1.12.1.2.2 Wake Up Devices and Events Table 9 lists the devices or specific events that can wake the computer from specific states. Table 9. Wake Up Devices and Events These devices/events can wake up the computer…...

  • Page 37: Hardware Support

    When used with an ATX12V-compliant power supply that supports remote power on/off, the D850GB board can turn off the system power through software control. To enable soft-off control in software, advanced power management must be enabled in the BIOS Setup program and in the operating system.

  • Page 38: Fan Connector Descriptions

    Intel Desktop Board D850GB Technical Product Specification For information about Refer to The location of the power connector Figure 10, page 56 The signal names of the power connector Table 33, page 57 The BIOS Setup program’s Boot menu Table 74, page 106 The ATX specification Section 1.3, page 16...

  • Page 39: Using The Wake On Lan Technology Connector

    † Upon detecting a Magic Packet frame, the LAN subsystem asserts a wakeup signal that powers up the computer. Depending on the LAN implementation, the D850GB board supports Wake on LAN technology in the following ways: • With APM, through the Wake on LAN technology connector •...

  • Page 40: Location Of The Standby Power Indicator Led

    Instantly Available technology can damage the power supply. Refer to Section 2.11.3 on page 74 for additional information. Instantly Available technology enables the D850GB board to enter the ACPI S3 (Suspend-to- RAM) sleep-state. While in the S3 sleep-state, the computer will appear to be off (the power supply is off, and the front panel LED is amber if dual-color, or off if single-color.) When...
  • Page 41 Product Description 1.12.2.5 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 or S3 states • Requires only one call to access the computer •...
  • Page 42 Intel Desktop Board D850GB Technical Product Specification...

  • Page 43: Technical Reference

    2 Technical Reference What This Chapter Contains Introduction.........................43 Memory Map ......................43 I/O Map ........................44 DMA Channels ......................46 PCI Configuration Space Map ..................46 Interrupts ........................47 PCI Interrupt Routing Map ..................47 Connectors .........................49 Jumper Blocks......................69 2.10 Mechanical Considerations..................71 2.11 Electrical Considerations ....................73 2.12 Thermal Considerations....................76 2.13 Reliability ........................77 2.14 Environmental ......................78...

  • Page 44: I/O Map

    Intel Desktop Board D850GB Technical Product Specification 2.3 I/O Map Table 12. I/O Map Address (hex) Size Description 0000 - 000F 16 bytes DMA controller 0020 - 0021 2 bytes Programmable Interrupt Control (PIC) 0040 - 0043 4 bytes System timer...
  • Page 45 Description 96 contiguous bytes starting on a 128-byte ICH2 (ACPI + TCO) divisible boundary 64 contiguous bytes starting on a 64-byte D850GB board resource divisible boundary 64 contiguous bytes starting on a 64-byte Onboard audio controller divisible boundary 32 contiguous bytes starting on a 32-byte...

  • Page 46: Dma Channels

    Intel Desktop Board D850GB Technical Product Specification 2.4 DMA Channels Table 13. DMA Channels DMA Channel Number Data Width System Resource 8- or 16-bits Audio 8- or 16-bits Audio / parallel port 8- or 16-bits Diskette drive 8- or 16-bits...

  • Page 47: Interrupts

    Technical Reference 2.6 Interrupts Table 15. Interrupts System Resource I/O channel check Reserved, interval timer Reserved, keyboard buffer full Reserved, cascade interrupt from slave PIC (Note) COM2 (Note) COM1 LPT2 (Plug and Play option) / Audio / User available Diskette drive (Note) LPT1 Real-time clock...

  • Page 48: Pci Interrupt Routing Map

    D850GB board and therefore share the same interrupt. Table 16 shows an example of how the PIRQ signals are routed on the D850GB board. For example, using Table 16 as a reference, assume an add-in card using INTA is plugged into PCI bus connector 4.

  • Page 49: Connectors

    2.8 Connectors CAUTION Only the back panel connectors of the D850GB board have overcurrent protection. The D850GB board’s internal connectors are not overcurrent protected and should connect only to devices inside the computer’s chassis, such as fans and internal peripherals. Do not use these connectors to power devices external to the computer’s chassis.

  • Page 50: Back Panel Connectors

    Intel Desktop Board D850GB Technical Product Specification 2.8.1 Back Panel Connectors Figure 8 shows the location of the back panel connectors. The back panel connectors are color- coded in compliance with PC 99 recommendations. The figure legend below lists the colors used.

  • Page 51: Ps/2 Mouse/Keyboard Connector

    Technical Reference Table 17. PS/2 Mouse/Keyboard Connector Signal Name Data Not connected Ground Fused +5 V Clock Not connected Table 18. USB Connectors Signal Name +5 V (fused) USBP0# [USBP1#] USBP0 [USBP1] Ground Signal names in brackets ([ ]) are for USB port 1. Table 19.

  • Page 52: Serial Port Connector

    Intel Desktop Board D850GB Technical Product Specification Table 20. Serial Port Connector Signal Name DCD (Data Carrier Detect) RXD# (Receive Data) TXD# (Transmit Data) DTR (Data Terminal Ready) Ground DSR (Data Set Ready) RTS (Request to Send) CTS (Clear to Send) RI (Ring Indicator) Table 21.

  • Page 53: Internal I/O Connectors

    Technical Reference 2.8.2 Internal I/O Connectors The internal I/O connectors are divided into the following functional groups: • Audio (see page 54)  Auxiliary line in  ATAPI CD-ROM  Legacy style (2-mm) CD-ROM  PC/PCI • Power and hardware control (see page 56) ...

  • Page 54: Audio Connectors

    Intel Desktop Board D850GB Technical Product Specification 2.8.2.2 Audio Connectors Figure 9 shows the location of the audio connectors. OM10444 Item Description Color Reference Designator For more information see: Auxiliary line in, ATAPI style White J2C1 Table 25 ATAPI CD-ROM...

  • Page 55: Auxiliary Line In Connector (J2C1)

    Technical Reference Table 25. Auxiliary Line In Connector (J2C1) Signal Name Left auxiliary line in Ground Ground Right auxiliary line in Table 26. ATAPI CD-ROM Connector (J2D1) Signal Name Left audio input from CD-ROM CD audio differential ground CD audio differential ground Right audio input from CD-ROM Table 27.

  • Page 56: Power And Hardware Control Connectors

    Intel Desktop Board D850GB Technical Product Specification 2.8.2.3 Power and Hardware Control Connectors Figure 10 shows the location of the power and hardware control connectors. OM10445 Item Description Reference Designator For more information see: ATX12V power connector J3H1 Table 29...

  • Page 57: Atx12V Power Connector (J3H1)

    Technical Reference For information about Refer to The power connector Section 1.12.2.1, page 37 The functions of the fan connectors Section 1.12.2.2, page 38 Wake on LAN technology Section 1.12.2.3, page 39 Table 29. ATX12V Power Connector (J3H1) Signal Name Signal Name Ground +12 V...

  • Page 58: Auxiliary Power (J9J1)

    Intel Desktop Board D850GB Technical Product Specification Table 34. Auxiliary Power (J9J1) Signal Name Ground Ground Ground +3.3 V +3.3 V +5 V Table 35. Wake on Ring Connector (J8C1) Signal Name Ground Ring Indicate Table 36. Wake on LAN Technology Connector (J7C1)

  • Page 59: Add-In Board And Peripheral Interface Connectors

    Technical Reference 2.8.2.4 Add-in Board and Peripheral Interface Connectors Figure 11 shows the location of the add-in board connector and peripheral connectors. Note the following considerations for the PCI bus connectors: • All of the PCI bus connectors are bus master capable. •...

  • Page 60: Cnr Connector (J3A1)

    Intel Desktop Board D850GB Technical Product Specification Table 38. CNR Connector (J3A1) Signal Name Signal Name Reserved Reserved Reserved Reserved Ground Reserved Reserved Ground Reserved Reserved Ground Reserved LAN_TXD2 Ground LAN_TXD0 LAN_TXD1 Ground LAN_RSTSYNC LAN_CLK Ground LAN_RXD1 LAN_RXD2 Reserved LAN_RXD0...

  • Page 61: Pci Bus Connectors (J4A1, J4B1, J4C1, J4D1, J4E1)

    Technical Reference Table 39. PCI Bus Connectors (J4A1, J4B1, J4C1, J4D1, J4E1) Signal Name Signal Name Signal Name Signal Name Ground (TRST#)* -12 V AD16 AD17 +12 V Ground (TCK)* +3.3 V C/BE2# +5 V (TMS)* Ground FRAME# Ground +5 V (TDI)* no connect (TDO)* Ground IRDY#...

  • Page 62: Agp Connector (J5E1)

    Intel Desktop Board D850GB Technical Product Specification Table 40. AGP Connector (J5E1) Signal Name Signal Name Signal Name Signal Name +12V No Connect Vcc3.3 Vcc3.3 TYPEDET# AD22 AD21 Reserved AD20 AD19 No Connect No Connect Ground Ground Ground Ground AD18...

  • Page 63: Pci Ide Connectors (J9G2, Primary And J9G1, Secondary)

    Technical Reference Table 41. PCI IDE Connectors (J9G2, Primary and J9G1, Secondary) Signal Name Signal Name Reset IDE Ground Data 7 Data 8 Data 6 Data 9 Data 5 Data 10 Data 4 Data 11 Data 3 Data 12 Data 2 Data 13 Data 1 Data 14...

  • Page 64: Diskette Drive Connector (J10G1)

    Intel Desktop Board D850GB Technical Product Specification Table 42. Diskette Drive Connector (J10G1) Signal Name Signal Name Ground DENSEL Ground Reserved FDEDIN Ground FDINDX# (Index) Ground FDM00# (Motor Enable A) Ground No connect Ground FDDS0# (Drive Select A) Ground No connect...

  • Page 65: External I/O Connectors

    Technical Reference 2.8.3 External I/O Connectors Figure 12 shows the locations of the external I/O connectors. OM10447 Item Description Reference Designator For more information see: SCSI LED J7A2 Table 43 Front panel USB J9C1 Table 44 Auxiliary front panel power LED J8C3 Table 45 Front panel...

  • Page 66: Scsi Led Connector (J7A2)

    Intel Desktop Board D850GB Technical Product Specification Table 43. SCSI LED Connector (J7A2) Signal Name SCSI activity Not connected Table 44. Front Panel USB Connector (J9C1) Signal Name Signal Name VREG_FP_USB_PWR VREG_FP_USB_PWR ICH_U_P2# ICH_U_P3# ICH_U_P2 ICH_U_P3 Ground Ground Key (no pin) ICU_U_OC1_2# 2.8.3.1...

  • Page 67: Front Panel Connector (J9D2)

    2.8.3.2.1 Reset Switch Connector Pins 5 and 7 can be connected to a momentary SPST type switch that is normally open. When the switch is closed, the D850GB board resets and runs the POST. 2.8.3.2.2 Hard Drive Activity LED Connector Pins 1 and 3 can be connected to an LED to provide a visual indicator that data is being read from or written to a hard drive.

  • Page 68: States For A Two Color Power Led

    SW_ON# pin to ground for at least 50 ms to signal the power supply to switch on or off. (The time requirement is due to internal debounce circuitry on the D850GB board.) At least two seconds must pass before the power supply will recognize another on/off signal.

  • Page 69: Jumper Blocks

    Technical Reference 2.9 Jumper Blocks CAUTION Do not move any jumpers with the power on. Always turn off the power and unplug the power cord from the computer before changing a jumper setting. Otherwise, the board could be damaged. The board has two jumper blocks. Figure 13 shows the location of the jumper blocks. J8C2 J8D1 OM10448...

  • Page 70: Bios Setup Configuration Jumper Block

    Intel Desktop Board D850GB Technical Product Specification 2.9.1 BIOS Setup Configuration Jumper Block This 3-pin jumper block determines the BIOS Setup program’s mode. Table 49 describes the jumper settings for the three modes: normal, configure, and recovery. When the jumper is set to configuration mode and the computer is powered-up, the BIOS compares the processor version and the microcode version in the BIOS and reports if the two match.

  • Page 71: Mechanical Considerations

    2.10 Mechanical Considerations 2.10.1 Form Factor The D850GB board is designed to fit into an ATX-form-factor chassis. Figure 14 illustrates the mechanical form factor for the D850GB board. Dimensions are given in inches [millimeters]. The outer dimensions are 9.60 inches by 12.00 inches [243.84 millimeters by 304.80 millimeters].

  • Page 72: I/O Shield

    Intel Desktop Board D850GB Technical Product Specification 2.10.2 I/O Shield The back panel I/O shield for the D850GB board must meet specific dimension and material requirements. Systems based on this board need the back panel I/O shield to pass certification testing.

  • Page 73: Electrical Considerations

    0.37 A 2.11.2 Add-in Board Considerations The D850GB board is 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 in a fully-loaded D850GB board (all six expansion...

  • Page 74: Standby Current Requirements

    D850GB board may lose register settings stored in memory, etc. Calculate the standby current requirements using the steps described below. Power supplies used with the D850GB board must be able to provide enough standby current to support the Instantly Available (ACPI S3 sleep state) configuration as outlined in Table 52 below.

  • Page 75: Fan Connector Current Capability

    The other port may provide up to 7.5 mA (three nonwake-enabled devices.) during G1/S3 suspended operation. 2.11.4 Fan Connector Current Capability The D850GB board is designed to supply a maximum of 225 mA per fan connector. 2.11.5 Power Supply Considerations CAUTION The 5-V standby line for the power supply must be capable of providing adequate +5 V standby current.

  • Page 76: Thermal Considerations

    Intel Desktop Board D850GB Technical Product Specification 2.12 Thermal Considerations CAUTION An ambient temperature that exceeds the board’s maximum operating temperature by 5 C to 10 could cause components to exceed their maximum case temperature and malfunction. For information about the maximum operating temperature, see the environmental specifications in Section 2.14.

  • Page 77: Reliability

    Technical Reference Table 53 provides maximum case temperatures for D850GB board components that are sensitive to thermal changes. Case temperatures could be affected by the operating temperature, current load, or operating frequency. Maximum case temperatures are important when considering proper airflow to cool the D850GB board.

  • Page 78: Environmental

    Intel Desktop Board D850GB Technical Product Specification 2.14 Environmental Table 54 lists the environmental specifications for the D850GB board. Table 54. D850GB Board Environmental Specifications Parameter Specification Temperature -40 °C to +70 °C Non-Operating 0 °C to +55 °C Operating...

  • Page 79: Regulatory Compliance

    2.15 Regulatory Compliance This section describes the D850GB board’s compliance with safety and EMC regulations. 2.15.1 Safety Regulations Table 55 lists the safety regulations the D850GB board complies with when it is correctly installed in a compatible host system. Table 55.

  • Page 80: Certification Markings

    • PB Part Number: Intel bare circuit board part number (Solder side) PB A22167-003 • Battery “+ Side Up” marking: located on the component side of the D850GB board in close proximity to the battery holder • FCC Logo/Declaration: (Solder side) •...

  • Page 81: Overview Of Bios Features

    3.10 BIOS Security Features....................88 3.1 Introduction The D850GB board uses an Intel/AMI BIOS, which is stored in flash memory and can be updated using a disk-based program. In addition to the BIOS, the flash memory contains the BIOS Setup program, POST, APM, the PCI auto-configuration utility, and Plug and Play support.

  • Page 82: Bios Flash Memory Organization

    Intel Desktop Board D850GB Technical Product Specification 3.2 BIOS Flash Memory Organization The Intel 82802AB 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.

  • Page 83: System Management Bios (Smbios)

    Plug and Play operating system can obtain the SMBIOS information. For information about Refer to The D850GB board’s compliance level with SMBIOS Section 1.3, page 16 3.5 USB Legacy Support USB legacy support enables USB devices such as keyboards, mice, and hubs to be used even when the operating system’s USB drivers are not yet available.

  • Page 84: Bios Updates

    USB legacy support is for keyboards, mice, and hubs only. Other USB devices are not supported in legacy mode. 3.6 BIOS Updates The BIOS can be updated using either of the following utilities, which are available on the Intel World Wide Web site: •...

  • Page 85: Custom Splash Screen

    During POST, an Intel splash screen is displayed by default. This splash screen can be replaced with a custom splash screen. A utility is available from Intel to assist with creating a custom splash screen. The custom splash screen can be programmed into the flash memory using the BIOS upgrade utility.

  • Page 86: Boot Options

    Intel Desktop Board D850GB Technical Product Specification 3.8 Boot Options In the BIOS Setup program, the user can choose to boot from a diskette drive, hard drives, CD-ROM, or the network. The default setting is for the diskette drive to be the first boot device, the hard drive second, and the ATAPI CD-ROM third.

  • Page 87: Intel Rapid Bios Boot

    It is possible to optimize the boot process to the point where the system boots so quickly that the Intel logo screen (or a custom logo splash screen) will not be seen. Monitors and hard disk drives with minimum initialization times can also contribute to a boot time that might be so fast that necessary logo screens and POST messages cannot be seen.

  • Page 88: Bios Security Features

    Intel Desktop Board D850GB Technical Product Specification 3.10 BIOS Security Features The BIOS includes security features that restrict access to the BIOS Setup program and who can boot the computer. A supervisor password and a user password can be set for the BIOS Setup program and for booting the computer, with the following restrictions: •...

  • Page 89: Bios Setup Program

    4 BIOS Setup Program What This Chapter Contains Introduction.........................89 Maintenance Menu .....................90 Main Menu........................92 Advanced Menu......................93 Security Menu ......................104 Power Menu ......................105 Boot Menu ........................106 Exit Menu .........................108 4.1 Introduction The BIOS Setup program can be used to view and change the BIOS settings for the computer. The BIOS Setup program is accessed by pressing the <F2>...

  • Page 90: Maintenance Menu

    Intel Desktop Board D850GB Technical Product Specification Table 59 lists the function keys available for menu screens. Table 59. BIOS Setup Program Function Keys BIOS Setup Program Function Key Description <←> or <→> Selects a different menu screen (Moves the cursor left or right) <↑>...

  • Page 91: Extended Configuration Submenu

    BIOS Setup Program 4.2.1 Extended Configuration Submenu To access this submenu, select Maintenance on the menu bar, then Extended Configuration. Main Advanced Security Power Boot Exit Maintenance Extended Configuration The submenu represented by Table 61 is for setting video memory cache mode. This submenu becomes available when User Defined is selected under Extended Configuration.

  • Page 92: Main Menu

    Intel Desktop Board D850GB Technical Product Specification 4.3 Main Menu To access this menu, select Main on the menu bar at the top of the screen. Maintenance Advanced Security Power Boot Exit Main Table 62 describes the Main menu. This menu reports processor and memory information and is for configuring the system date and system time.

  • Page 93: Advanced Menu

    BIOS Setup Program 4.4 Advanced Menu To access this menu, select Advanced on the menu bar at the top of the screen. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Diskette Configuration Event Log Configuration Video Configuration Table 63 describes the Advanced Menu.

  • Page 94: Pci Configuration Submenu

    Intel Desktop Board D850GB Technical Product Specification 4.4.1 PCI Configuration Submenu To access this submenu, select Advanced on the menu bar, then PCI Configuration. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Diskette Configuration...

  • Page 95: Boot Configuration Submenu

    BIOS Setup Program 4.4.2 Boot Configuration Submenu To access this submenu, select Advanced on the menu bar, then Boot Configuration. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Diskette Configuration Event Log Configuration Video Configuration The submenu represented by Table 65 is for setting Plug and Play options, resetting configuration data, and the power-on state of the Numlock key.

  • Page 96: Peripheral Configuration Submenu

    Intel Desktop Board D850GB Technical Product Specification 4.4.3 Peripheral Configuration Submenu To access this submenu, select Advanced on the menu bar, then Peripheral Configuration. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Diskette Configuration...
  • Page 97 BIOS Setup Program Table 66. Peripheral Configuration Submenu (continued) Feature Options Description • 378 (default) Base I/O address Specifies the base I/O address for the parallel port. (This feature is present • 278 only when Parallel Port is set to Enabled ) •...

  • Page 98: Ide Configuration Submenu

    Intel Desktop Board D850GB Technical Product Specification 4.4.4 IDE Configuration Submenu To access this submenu, select Advanced on the menu bar, then IDE Configuration. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Diskette Configuration...

  • Page 99: Primary/Secondary Ide Master/Slave Submenus

    BIOS Setup Program 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. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Primary IDE Master...
  • Page 100 Intel Desktop Board D850GB Technical Product Specification Table 68. Primary/Secondary IDE Master/Slave Submenus (continued) Feature Options Description • Auto (default) PIO Mode Specifies the PIO mode. • 0 • 1 • 2 • 3 • 4 • Disabled (default) Ultra DMA Specifies the Ultra DMA mode for the drive.

  • Page 101: Diskette Configuration Submenu

    BIOS Setup Program 4.4.5 Diskette Configuration Submenu To access this menu, select Advanced on the menu bar, then Diskette Configuration. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Diskette Configuration Event Log Configuration Video Configuration The submenu represented by Table 69 is used for configuring the diskette drive.

  • Page 102: Event Log Configuration Submenu

    Intel Desktop Board D850GB Technical Product Specification 4.4.6 Event Log Configuration Submenu To access this menu, select Advanced on the menu bar, then Event Log Configuration. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration...

  • Page 103: Video Configuration Submenu

    BIOS Setup Program 4.4.7 Video Configuration Submenu To access this menu, select Advanced on the menu bar, then Video Configuration. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Diskette Configuration Event Log Configuration Video Configuration The submenu represented in Table 71 is for configuring the video features.

  • Page 104: Security Menu

    Intel Desktop Board D850GB Technical Product Specification 4.5 Security Menu To access this menu, select Security from the menu bar at the top of the screen. Maintenance Main Advanced Power Boot Exit Security The menu represented by Table 72 is for setting passwords and security features.

  • Page 105: Power Menu

    BIOS Setup Program 4.6 Power Menu To access this menu, select Power from the menu bar at the top of the screen. Maintenance Main Advanced Security Boot Exit Power The menu represented in Table 73 is for setting the power management features. Table 73.

  • Page 106: Boot Menu

    Intel Desktop Board D850GB Technical Product Specification 4.7 Boot Menu To access this menu, select Boot from the menu bar at the top of the screen. Maintenance Main Advanced Security Power Exit Boot IDE Drive Configuration The menu represented in Table 74 is used to set the boot features and the boot sequence.
  • Page 107 (Note 4 ) • IDE-HDD • Disabled • ATAPI CDROM • Intel UNDI, PXE 2.0 • Disabled NOTE: To configure the computer to boot from an IDE hard disk drive, set a boot device in the Setup feature to IDE-HDD . Determine the IDE channel, and master or slave mode of the drive.

  • Page 108: Exit Menu

    Intel Desktop Board D850GB Technical Product Specification 4.8 Exit Menu To access this menu, select Exit from the menu bar at the top of the screen. Maintenance Main Advanced Security Power Boot Exit The menu represented in Table 75 is for exiting the BIOS Setup program, saving changes, and loading and saving defaults.

  • Page 109: Error Messages And Beep Codes

    5 Error Messages and Beep Codes What This Chapter Contains BIOS Error Messages....................109 Port 80h POST Codes....................111 Bus Initialization Checkpoints ...................115 Speaker ........................116 BIOS Beep Codes ....................116 Diagnostic LEDs .......................118 5.1 BIOS Error Messages Table 76 lists the error messages and provides a brief description of each. Table 76.
  • Page 110 Intel Desktop Board D850GB Technical Product Specification Table 76. BIOS Error Messages (continued) Error Message Explanation Checking NVRAM..NVRAM is being checked to see if it is valid. Update OK! NVRAM was invalid and has been updated. Updated Failed NVRAM was invalid but was unable to be updated.

  • Page 111: Port 80H Post Codes

    F000:0000 in Shadow RAM and give control to recovery code in F000 Shadow RAM. Initialize interrupt vector tables, initialize system timer, initialize DMA controller and interrupt controller. Initialize extra (Intel Recovery) Module. Initialize floppy drive. Try to boot from floppy. If reading of boot sector is successful, give control to boot sector code.

  • Page 112: Runtime Code Uncompressed In F000 Shadow Ram

    Intel Desktop Board D850GB Technical Product Specification Table 79. Runtime Code Uncompressed in F000 Shadow RAM Code Description of POST Operation NMI is Disabled. To check soft reset/power-on. BIOS stack set. Going to disable cache if any. POST code to be uncompressed.
  • Page 113 Error Messages and Beep Codes Table 79. Runtime Code Uncompressed in F000 Shadow RAM (continued) Code Description of POST Operation To prepare the descriptor tables. To enter in virtual mode for memory test. To enable interrupts for diagnostics mode. To initialize data to check memory wrap around at 0:0. Data initialized.
  • Page 114 Intel Desktop Board D850GB Technical Product Specification Table 79. Runtime Code Uncompressed in F000 Shadow RAM (continued) Code Description of POST Operation Lock-key checking over. To check for memory size mismatch with CMOS. Memory size check done. To display soft error and check for password or bypass setup.

  • Page 115: Bus Initialization Checkpoints

    Error Messages and Beep Codes Table 79. Runtime Code Uncompressed in F000 Shadow RAM (continued) Code Description of POST Operation Uncompress SMBIOS module and init SMBIOS code and form the runtime SMBIOS image in shadow. Going to copy any code to specific area. Copying of code to specific area done.

  • Page 116: Speaker

    EISA devices ISA PnP devices PCI devices 5.4 Speaker A 47 Ω inductive speaker is mounted on the D850GB board. The speaker provides audible error code (beep code) information during POST. For information about Refer to The location of the onboard speaker Figure 1, page 14 5.5 BIOS Beep Codes...

  • Page 117: Beep Codes

    Error Messages and Beep Codes If POST completes normally, the BIOS issues one short beep before passing control to the operating system. Table 83. Beep Codes Beep 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...

  • Page 118: Diagnostic Leds

    Intel Desktop Board D850GB Technical Product Specification 5.6 Diagnostic LEDs The enhanced diagnostics feature consists of a hardware decoder and four LEDs located between the LAN connector and the parallel port connector on the back panel. This feature requires no modifications to the chassis (other than I/O back panel shield) or cabling.

  • Page 119: Diagnostic Led Codes

    Error Messages and Beep Codes Table 84. Diagnostic LED Codes Display BIOS Operation Display BIOS Operation Amber Power on, starting BIOS Amber Undefined Amber Amber Amber Amber Amber Green Green Recovery mode Green Undefined Amber Amber Amber Amber Amber Green Amber Amber Processor, cache, etc.
  • Page 120 Intel Desktop Board D850GB Technical Product Specification...

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