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Intel D845GRG Using Manual

Desktop boards using the intel 845g chipset
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Technical Product Specification
for Intel
using the Intel
®
®
Intel
Desktop Boards using the Intel
Current characterized errata are documented in the Specification Update for Intel Desktop Boards using the Intel 845G Chipset.
®
845G Chipset may contain design defects or errors known as errata that may cause the product to deviate from published specifications.
Desktop Boards
845G Chipset
®
April 2002
Order Number: A81229-001

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Summary of Contents for Intel D845GRG

  • Page 1 Desktop Boards using the Intel 845G Chipset 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 Specification Update for Intel Desktop Boards using the Intel 845G Chipset.

  • Page 2: Revision History

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

  • Page 3: Intended Audience

    Preface This Technical Product Specification (TPS) describes the features common to Intel Desktop Boards using the Intel 845G Chipset. This specification is to be used with Product Supplement documents (available separately) that describe features unique to individual members of the product family.
  • Page 4 Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset INTEGRATOR’S NOTES Integrator’s notes are used to call attention to information that may be useful to system integrators. CAUTION Cautions are included to help you avoid damaging hardware or losing data.

  • Page 5: Table Of Contents

    Online Support ......................12 Operating System Support ..................12 Design Specifications ....................13 Processor ........................17 System Memory ......................18 ® Intel 845G Chipset ....................20 1.7.1 Intel 845G Graphics Subsystem..............20 1.7.2 USB......................26 1.7.3 IDE Support ....................26 1.7.4 Real-Time Clock, CMOS SRAM, and Battery..........27 I/O Controller ......................27 1.8.1 Serial Port ....................28...
  • Page 6 Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 3 BIOS Overview Introduction.........................49 BIOS Flash Memory Organization ................49 Resource Configuration ....................49 3.3.1 PCI Autoconfiguration ..................49 3.3.2 PCI IDE Support...................50 System Management BIOS (SMBIOS) ...............50 Legacy USB Support ....................51 BIOS Updates ......................52...
  • Page 7 Contents 5 Error Messages and Beep Codes BIOS Error Messages....................81 Port 80h POST Codes....................83 Bus Initialization Checkpoints ..................87 Speaker ........................88 BIOS Beep Codes ......................88 Figures 1. Block Diagram ........................11 Tables Feature Summary......................9 Specifications ......................13 Supported DDR DIMM Configurations ................19 Supported SDR DIMM Configurations ................19 Direct Draw Supported Modes..................21 Video BIOS Video Modes Supported for Analog CRTs..........22...
  • Page 8 Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset Diskette Configuration Submenu ................69 Event Log Configuration Submenu ................70 Video Configuration Submenu ..................71 USB Configuration Submenu..................72 Chipset Configuration Submenu .................73 Security Menu ......................75 Power Menu .......................76 ACPI Submenu......................76 Boot Menu ........................77...

  • Page 9: Product Description

    Memory support (DDR SDRAM or SDR SDRAM) is product-dependent. For more information, refer to the Product Supplement Document for your Desktop Board. Contact your Intel sales representative to determine if the audio subsystem is present on your Intel Desktop Board.
  • Page 10 NOTE The LAN and the CNR features are mutually exclusive. Contact your Intel sales representative to determine which type of hardware monitoring ASIC is present on your Intel Desktop Board. The CNR connector and the LAN subsystem are mutually exclusive features. Contact your Intel sales...

  • Page 11: Block Diagram

    4 Mbit Interface Graphics and I/O Controller Hub Firmware Hub Memory Controller (ICH4) (FWH) 4X AGP Hub (GMCH) Connector (1.5 V only) Intel 845G Chipset Display Interface Physical VGA Port Layer Connector Interface Memory Bus DIMM Banks (2) SMBus CSMA/CD...

  • Page 12: Online Support

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 1.2 Online Support To find information about… Visit this World Wide Web site: Intel Desktop Boards using the Intel 845G http://www.intel.com/design/motherbd Chipset under “Product Info” or “Customer Support”...

  • Page 13: Design Specifications

    The information is Name Title and Ownership available from… AC ’97 Audio Codec ’97 Revision 2.2, ftp://download.intel.com/ial/ September 2000, scalableplatforms/ac97r22.pdf Intel Corporation. ACPI Advanced Configuration Version 1.0b, http://www.acpi.info/ and Power Interface July 01, 1998, spec10b.htm Specification Intel Corporation, Microsoft Corporation, and Toshiba Corporation.
  • Page 14 Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset Table 2. Specifications (continued) Reference Specification Version, Revision Date and The information is Name Title Ownership available from… Double Data Rate (DDR) Version 1.0, http://www.jedec.org/ SDRAM Specification June 2000,...
  • Page 15 Plug and Play BIOS Version 1.0a, http://www.microsoft.com/ Play Specification May 5, 1994, hwdev/respec/ Compaq Computer Corporation, pnpspecs.htm Phoenix Technologies Limited, and Intel Corporation. Preboot Execution Version 2.1, ftp://download.intel.com/ial/ Environment September 20, 1999, wfm/pxespec.pdf Intel Corporation. PC SDRAM Unbuffered Revision 1.0, http://www.intel.com/...
  • Page 16 Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset Table 2. Specifications (continued) Reference Specification Version, Revision Date The information is Name Title and Ownership available from… UHCI Universal Host Controller Revision 1.1, http://www.usb.org/ Interface Design Guide March 1996, developers/docs.html...

  • Page 17: Processor

    Use of unsupported processors can damage the Desktop Board, the processor, and the power ® supply. See the Specification Update for Intel Desktop Boards using the Intel 845G Chipset for the most up-to-date list of supported processors for these boards. The Desktop Boards support the following •...

  • Page 18: System Memory

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 1.6 System Memory The Desktop Boards provide the following memory features: • Two DIMM sockets supporting one of the following  2.5 V (only) 184-pin 200/266 MHz Double Data Rate (DDR) SDRAM DIMMs with gold- plated contacts, or ...

  • Page 19: Supported Ddr Dimm Configurations

    Product Description Table 3 lists the supported DDR DIMM configurations. Table 3. Supported DDR DIMM Configurations DIMM Configuration DDR SDRAM DDR SDRAM Organization Number of DDR Capacity (Note) Density Front-side/Back-side SDRAM Devices 32 MB 64 Mbit 4 M x 16/empty 64 MB 64 Mbit 8 M x 8/empty...

  • Page 20: Intel ® 845G Chipset

    The Intel 845G chipset contains two separate, mutually exclusive graphics options. Either the Intel Extreme Graphics controller (contained within the 82845G 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.

  • Page 21: Direct Draw Supported Modes

    Product Description INTEGRATOR’S NOTE EMC emission testing of high-speed video was performed on this Desktop Board using scrolling H’s displayed on the video monitor in accordance with ANSI C63.4-2000 documentation. The scrolling H’s are displayed using the following font sizes: •...

  • Page 22: Video Bios Video Modes Supported For Analog Crts

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset Table 6 lists the video BIOS video modes supported by the graphics subsystem. Table 6. Video BIOS Video Modes Supported for Analog CRTs Available Refresh Resolution Color Palette...

  • Page 23: Supported Configuration Modes

    Product Description Table 7 lists the supported configuration modes of the graphics subsystem. Table 7. Supported Configuration Modes Available Refresh Supported bpp Configuration Mode Resolution Frequencies (Hz) (see Table 8 for more information) 640 x 480 60, 72, 75, 85, 100, 120 800 x 600 60, 72, 75, 85, 100, 120 1024 x 768...

  • Page 24: Details Of Bpp Configuration Modes

    1.7.1.3 Zone Rendering Technology (ZRT) The Intel Extreme Graphics Controller supports Zone Rendering Technology (ZRT). ZRT is a process by which the screen is divided into several zones. Each zone is completely cached and rendered on chip before being written to the frame buffer. The benefits of ZRT include the following: •...
  • Page 25 GMCH is capable of driving a 24-bit 330 MHz pixel clock. When an AGP add- in 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.

  • Page 26: Usb

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 1.7.2 USB The Desktop Boards support up to six USB 2.0 ports, 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.

  • Page 27: Real-Time Clock, Cmos Sram, And Battery

    Product Description The Desktop Boards support Laser Servo (LS-120) diskette technology through the IDE interfaces. The BIOS supports booting from an LS-120 drive. ✏ NOTE The BIOS will always recognize an LS-120 drive as an ATAPI floppy drive. To ensure correct operation, do not configure the drive as a hard disk drive.

  • Page 28: Serial Port

    Mic in pre-amp that supports dynamic, condenser, and electret microphones The audio subsystem supports the following audio interfaces: • ATAPI-style connectors:  Auxiliary line in  CD-ROM Contact your Intel sales representative to determine if the audio subsystem is present on your Intel Desktop Board.

  • Page 29: Audio Connectors

    A 1 x 4-pin ATAPI-style connector connects an internal ATAPI CD-ROM drive to the audio mixer. 1.9.2 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 Section 1.2, page 12...

  • Page 30: Lan Subsystem

    On (brighter and pulsing) The computer is communicating with another computer on the LAN. The CNR connector and the LAN subsystem are mutually exclusive features. Contact your Intel sales representative to determine which of these features is present on your Intel Desktop Board.

  • Page 31: Lan Subsystem Software

    For information about Refer to Obtaining the CNR specification Section 1.4, page 13 The CNR connector and the LAN subsystem are mutually exclusive features. Contact your Intel sales representative to determine which of these features is present on your Intel Desktop Board.

  • Page 32: Hardware Management Subsystem

    • SMBus interface For information about Refer to The Analog Devices ADM1025 http://www.analogdevices.com The Philips Semiconductor NE1619 http://www.philipssemiconductor.com Contact your Intel sales representative to determine which type of hardware monitoring ASIC is present on your Intel Desktop Board.

  • Page 33: Fan Monitoring

    The mechanical switch is open for normal computer operation. ✏ NOTE Chassis intrusion detection may be implemented using Intel LANDesk Client Manager or third- party software. Contact your Intel sales representative to determine which type of hardware monitoring ASIC is present on your Intel Desktop Board.

  • Page 34: Power Management

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 1.13 Power Management Power management is implemented at several levels, including: • Software support through Advanced Configuration and Power Interface (ACPI) • Hardware support:  Power connector  Fan connectors ...

  • Page 35: Power States And Targeted System Power

    Product Description 1.13.1.1 System States and Power States Under ACPI, the operating system directs all system and device power state transitions. The operating system puts devices in and out of low-power states based on user preferences and knowledge of how devices are being used by applications. Devices that are not being used can be turned off.

  • Page 36: Hardware Support

    • Wake from USB • Wake from PS/2 keyboard • PME# signal wake-up support Standby current requirements are product dependent. For information on power usage and standby current requirements, refer to the Product Supplement Document for your Intel Desktop Board.

  • Page 37: Fan Connector Function/Operation For Desktop Boards With A Hardware Monitoring Asic

    Fan is off when the system is off or in the S3, S4, or S5 state. • Wired to a fan tachometer input of the I/O controller. Contact your Intel sales representative to determine which type of hardware monitoring ASIC is present on your Intel Desktop Board.

  • Page 38: Fan Connector Function/Operation For Desktop Boards With A Hardware Monitoring And Fan Control Asic

    The PCI bus PME# signal for PCI 2.2 compliant LAN designs • The onboard LAN subsystem • A CNR-based LAN subsystem Standby current requirements are product dependent. For information on power usage and standby current requirements, refer to the Product Supplement Document for your Intel Desktop Board.
  • Page 39 Standby current requirements are product dependent. For information on power usage and standby current requirements, refer to the Product Supplement Document for your Intel Desktop Board. The location of the standby power indicator LED is product dependent. For information, refer to the...
  • Page 40 Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 1.13.2.7 Wake from USB USB bus activity wakes the computer from ACPI S1 or S3 states. ✏ NOTE Wake from USB requires the use of a USB peripheral that supports Wake from USB.

  • Page 41: Technical Reference

    2 Technical Reference 2.1 Introduction Sections 2.2 - 2.6 contain several standalone tables. Table 15 describes the system memory map, Table 16 shows the fixed I/O map, Table 17 lists the DMA channels, Table 18 defines the PCI configuration space map, and Table 19 describes the interrupts. The remaining sections in this chapter are introduced by text found with their respective section headings.

  • Page 42: Fixed I/O Map

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 2.3 Fixed I/O Map Table 16. Fixed I/O Map Address (hex) Size Description 0000 - 00FF 256 bytes Used by the Desktop Board. Refer to the ICH4 data sheet for dynamic addressing information.

  • Page 43: Dma Channels

    (Note 2) PCI bus connector 6 Notes: 1. Bus number = 01 when the Intel Extreme Graphics controller is used. Bus number = 02 when an AGP add-in card is used. 2. For Desktop Boards with six PCI bus connectors.

  • Page 44: Interrupts

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 2.6 Interrupts The interrupts can be routed through either the Programmable Interrupt Controller (PIC) or the Advanced Programmable Interrupt Controller (APIC) portion of the ICH4 component. The PIC is supported in Windows 98 SE and Windows ME and uses the first 16 interrupts.

  • Page 45: Pci Interrupt Routing Map

    Technical Reference 2.7 PCI Interrupt Routing Map This section describes interrupt sharing and how the interrupt signals are connected between the PCI bus connectors and onboard PCI devices. The PCI specification specifies how interrupts can be shared between devices attached to the PCI bus. In most cases, the small amount of latency added by interrupt sharing does not affect the operation or throughput of the devices.

  • Page 46: Pci Interrupt Routing Map

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset Table 20. PCI Interrupt Routing Map ICH4 PIRQ Signal Name PCI Interrupt Source PIRQA PIRQB PIRQC PIRQD PIRQE PIRQF PIRQG PIRQH AGP connector INTA INTB ICH4 USB UHCI controller 1 INTA...

  • Page 47: Environmental

    Technical Reference 2.8 Environmental Table 21 lists the environmental specifications for the Desktop Boards. Table 21. Desktop Board Environmental Specifications Parameter Specification Temperature -40 °C to +70 °C Non-Operating 0 °C to +55 °C Operating Shock Unpackaged 50 g trapezoidal waveform Velocity change of 170 inches/second Packaged Half sine 2 millisecond...
  • Page 48 Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset...

  • Page 49: Bios Overview

    3 BIOS Overview 3.1 Introduction The Desktop Boards use an Intel/AMI BIOS that is stored in the Firmware Hub (FWH) and can be updated using a disk-based program. The FWH contains the BIOS Setup program, POST, the PCI auto-configuration utility, and Plug and Play support.

  • Page 50: Pci Ide Support

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 3.3.2 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 1.4 for the supported version of ATAPI).

  • Page 51: Legacy Usb Support

    BIOS Overview Non-Plug and Play operating systems, such as Windows NT, require an additional interface for obtaining the SMBIOS information. The BIOS supports an SMBIOS table interface for such operating systems. Using this support, an SMBIOS service-level application running on a non-Plug and Play operating system can obtain the SMBIOS information.

  • Page 52: Bios Updates

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 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: • ® Intel Express BIOS Update utility, which enables automated updating while in the Windows environment.

  • Page 53: Recovering Bios Data

    To create a BIOS recovery diskette, a bootable diskette must be created and the BIOS update files copied to it. BIOS upgrades and the Intel Flash Memory Update Utility are available from Intel Customer Support through the Intel World Wide Web site.

  • Page 54: Network Boot

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 3.8.2 Network Boot The network can be selected as a boot device. This selection allows booting from the onboard LAN or a network add-in card with a remote boot ROM installed.

  • Page 55: 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 56: Supervisor And User Password Functions

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset • Setting the user password restricts who can boot the computer. The password prompt will be displayed before the computer is booted. If only the supervisor password is set, the computer boots without asking for a password.

  • Page 57: Bios Setup Program

    4 BIOS Setup Program 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> key after the Power-On Self-Test (POST) memory test begins and before the operating system boot begins. The menu bar is shown below. Maintenance Main Advanced Security...

  • Page 58: Maintenance Menu

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 4.2 Maintenance Menu To access this menu, select Maintenance on the menu bar at the top of the screen. Main Advanced Security Power Boot Exit Maintenance The menu shown in Table 26 is for clearing Setup passwords and enabling extended configuration mode.

  • Page 59: Main Menu

    BIOS Setup Program 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 27 describes the Main menu. This menu reports processor and memory information and is for configuring the system date and system time.

  • Page 60: Advanced Menu

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 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...

  • Page 61: Pci Configuration Submenu

    BIOS Setup Program 4.4.1 PCI Configuration Submenu To access this submenu, select Advanced on the menu bar and then PCI Configuration. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Diskette Configuration Event Log Configuration Video Configuration USB Configuration Chipset Configuration...
  • Page 62 Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset Table 29. PCI Configuration Submenu (continued) Feature Options Description • Auto (default) PCI Slot5 IRQ Priority Allows selection of IRQ priority for PCI bus connector 5. • 5 (Note 1, Note 2) •...

  • Page 63: Boot Configuration Submenu

    BIOS Setup Program 4.4.2 Boot Configuration Submenu To access this submenu, select Advanced on the menu bar and 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 USB Configuration Chipset Configuration...

  • Page 64: Peripheral Configuration Submenu

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 4.4.3 Peripheral Configuration Submenu To access this submenu, select Advanced on the menu bar and then Peripheral Configuration. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration...
  • Page 65 BIOS Setup Program Table 31. 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 66: Ide Configuration Submenu

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 4.4.4 IDE Configuration Submenu To access this submenu, select Advanced on the menu bar and then IDE Configuration. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration...

  • Page 67: 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 68 Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset Table 33. Primary/Secondary IDE Master/Slave Submenus (continued) Feature Options Description • Auto (default) Specifies the PIO mode. PIO Mode • 0 • 1 • 2 • 3 • 4 •...

  • Page 69: Diskette Configuration Submenu

    BIOS Setup Program 4.4.5 Diskette Configuration Submenu To access this menu, select Advanced on the menu bar and 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 USB Configuration Chipset Configuration...

  • Page 70: Event Log Configuration Submenu

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 4.4.6 Event Log Configuration Submenu To access this menu, select Advanced on the menu bar and then Event Log Configuration. Maintenance Main Security Power Boot Exit Advanced PCI Configuration...

  • Page 71: Video Configuration Submenu

    BIOS Setup Program 4.4.7 Video Configuration Submenu To access this menu, select Advanced on the menu bar and 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 USB Configuration Chipset Configuration...

  • Page 72: Usb Configuration Submenu

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 4.4.8 USB Configuration Submenu To access this menu, select Advanced on the menu bar and then USB Configuration. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration...

  • Page 73: Chipset Configuration Submenu

    BIOS Setup Program 4.4.9 Chipset Configuration Submenu To access this menu, select Advanced on the menu bar and then Chipset Configuration. Maintenance Main Security Power Boot Exit Advanced PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Diskette Configuration Event Log Configuration Video Configuration USB Configuration Chipset Configuration...
  • Page 74 Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset Table 38. Chipset Configuration Submenu (continued) Feature Options Description • Auto (default) SDRAM Timing Control Auto = Timings will be programmed according to the memory detected. • Manual – Aggressive Manual –...

  • Page 75: Security Menu

    BIOS Setup Program 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 39 is for setting passwords and security features. Table 39.

  • Page 76: Power Menu

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 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 ACPI The menu represented in Table 40 is for setting the power management features.

  • Page 77: Boot Menu

    Disables/enables PXE boot to LAN. (default) Note: When set to Enabled, you must reboot for the • Enabled Intel Boot Agent device to be available in the Boot Device menu. • Disabled USB Boot Disables/enables booting to USB boot devices.

  • Page 78: Boot Device Priority Submenu

    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.

  • Page 79: Hard Disk Drives Submenu

    BIOS Setup Program 4.7.2 Hard Disk Drives Submenu To access this menu, select Boot on the menu bar and then Hard Disk Drives. Maintenance Main Advanced Security Power Exit Boot Boot Device Priority Hard Disk Drives Removable Devices ATAPI CD-ROM Drives The submenu represented in Table 44 is for setting hard disk drive priority.

  • Page 80: Atapi Cd-Rom Drives Submenu

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset 4.7.4 ATAPI CD-ROM Drives Submenu To access this menu, select Boot on the menu bar and then ATAPI CD-ROM Drives. Maintenance Main Advanced Security Power Exit Boot Boot Device Priority...

  • Page 81: Error Messages And Beep Codes

    5 Error Messages and Beep Codes 5.1 BIOS Error Messages Table 48 lists the error messages and provides a brief description of each. Table 48. BIOS Error Messages Error Message Explanation GA20 Error An error occurred with Gate A20 when switching to protected mode during the memory test.
  • Page 82 Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset Table 48. BIOS Error Messages (continued) Error Message Explanation Memory Size Decreased Memory size has decreased since the last boot. If no memory was removed then memory may be bad.

  • Page 83: 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 84: Runtime Code Uncompressed In F000 Shadow Ram

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset Table 51. 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.
  • Page 85 Error Messages and Beep Codes Table 51. 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 86 Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset Table 51. 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 87: Bus Initialization Checkpoints

    Error Messages and Beep Codes Table 51. 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 88: Speaker

    Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset Table 54 describes the lower nibble of the high byte and indicates the bus on which the routines are being executed. Table 54. Lower Nibble High Byte Functions...

  • Page 89: 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 55. 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 90 Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset...

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