Intel D845BG Intel Desktop Board D845PT/D845BG Product Guide
Intel D845BG Manual
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- Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 1
Intel® Desktop Boards D845PT and D845BG Product Guide Order Number: A72165-001 - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 2
and used in accordance with the instructions, may cause harmful interference to in this document is provided in connection with Intel® products. No license, express or Intel may make changes to specifications and product descriptions at any time, without notice. The D845PT and D845BG desktop boards - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 3
1 Desktop Board Features Board Components ...11 Processor ...13 Main Memory ...13 Intel® 845 Chipset ...14 Intel® 82845 Memory Controller Hub (MCH 14 Intel® 82801BA I/O Controller Hub (ICH2 15 Firmware Hub (FWH 15 Input/Output (I/O) Controller 15 Real-Time Clock...15 USB Support ...16 PCI - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 4
Intel Desktop Boards D845PT and D845BG Product Guide Installing and Removing a Processor 27 Installing the Processor Fan Heatsink Retention Mechanism Base 27 Installing a Processor 29 Installing the Processor Fan Heatsink 29 Connecting the Processor Fan Heatsink Cable 30 Removing a Processor - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 5
69 Audio Connectors 69 Power and Hardware Connectors 70 Add-In Card and Peripheral Interface Connectors 71 Front Panel Connectors 73 Desktop Board Resources 74 Memory Map ...74 DMA Channels ...74 I/O Map ...75 Interrupts ...77 A Error Messages and Indicators BIOS Beep Codes ...79 BIOS Error - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 6
Intel Desktop Boards D845PT and D845BG Product Guide 11. Connecting the Processor Fan Heatsink Cable to the Processor Fan Connector .........30 12. Installing a Memory Module 32 13. AGP Card with Retention Notch 33 14. Installing the AGP Card Retention Mechanism 34 15. Removing the AGP Card 35 - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 7
Contents 30. Serial Port B Connector 70 31. Front Panel USB Connectors 73 32. System Memory Map...74 33. DMA Channels...74 34. I/O Map...75 35. Interrupts ...77 36. Beep Codes ...79 37. BIOS Error Messages 80 38. Safety Regulations...83 39. EMC Regulations ...83 vii - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 8
Intel Desktop Boards D845PT and D845BG Product Guide viii - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 9
Processor Memory Chipset I/O Control LAN (optional) Graphics Audio Peripheral Interfaces Expansion Capabilities • microATX at 8.2 inches by 9.6 inches (D845PT board) • ATX at 8.2 inches by 12.0 inches (D845BG board) Support for a single Intel® Pentium® 4 processor in an mPGA-478 socket Two 184-pin - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 10
the front panel • Chassis intrusion connector • Speaker ✏ NOTE For information about Intel® desktop boards, including technical product specifications, BIOS updates, and device drivers, go to the Intel customer support World Wide Web site: http://support.intel.com/support/motherboards/desktop/ 10 - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 11
Z Front panel USB connector L Serial port B connector AA Battery M Power connector BB PCI bus add-in card connectors N Secondary IDE connector CC Communication and Networking Riser (CNR) (optional) O Primary IDE connector DD Front panel audio connector Figure 1. D845PT Board Components - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 12
intrusion connector H Intel 82845 Memory Controller Hub (MCH) W Front chassis fan connector I Processor socket X Front panel connector J Processor fan connector (tachometer input) Y Alternate power/sleep LED connector K DIMM sockets Z Front panel USB connector L Serial port B connector AA - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 13
/motherboards/desktop/ For instructions on installing or upgrading the processor, see Chapter 2 on page 22. The D845PT and D845BG boards require an ATX12V compliant power supply to function according to desktop board specifications. Both boards have two ATX12V compliant power supply connectors - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 14
Mbit technology) ✏ NOTE The D845PT and D845BG desktop boards have been designed to support DIMMs based on 512 Mbit technology up to 2 GB, but this technology has not been validated on these boards. For more information about the latest list of tested memory, refer to the Intel World Wide Web site at - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 15
on D845PT and D845BG boards includes: • Integrated IDE controller supports two Ultra DMA-33 and ATA-66/100 channels, BMIDE and PIO modes • SMBus interface • FWH interface • Low Pin Count (LPC) interface • AC'97 2.1 compliant link for audio and telephony codecs • Integrated Intel 82562ET 10/100 - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 16
the back panel, two to the front panel connector, and one to the optional CNR. To attach additional devices, connect an external hub to either of the built-in ports. The board supports the standard universal host controller interface (UHCI) and takes advantage of standard software drivers written to - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 17
passive (non-amplified) speakers are connected to this output. Audio drivers and utilities are available from Intel's customer support World Wide Web site: http://support.intel.com/support/motherboards/desktop/ BIOS The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, the PCI and - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 18
connector with status indicator LEDs • Programmable transit threshold • Configurable EEPROM that contains the MAC address LAN Subsystem Software For LAN software and drivers, refer to the D845PT or D845BG link on Intel's World Wide Web site at: http://support.intel.com/support/motherboards/desktop - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 19
on the desktop board. The speaker provides audible error code (beep code) information during the Power-On Self-Test (POST). Battery A battery on the board keeps the values in CMOS RAM and the clock current when the computer is turned off. See Chapter 2 starting on page 23 for instructions on how - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 20
Intel Desktop Boards D845PT and D845BG Product Guide Hardware Power Connectors The D845PT and D845BG boards have two power connectors. See Figure 22 on page 70 for the location of the power connectors. Fan Connectors The D845PT and D845BG boards have one processor fan connector and two standard fan - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 21
, the desktop board may lose register settings stored in memory. Power supplies used with this board must be able to provide enough standby current to support the standard Instantly Available (ACPI S3 sleep state) configuration as outlined in Table 4. Values are determined by specifications such as - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 22
-wake-enabled) CNR** (wake enabled) CNR** (non-wake-enabled) USB ports** Standby Current Requirements (mA) 770* 345 375 100 875 40 700 * Refer to the Intel Desktop Board D845PT/D845BG Technical Product Specification for the exact standby current requirements ** Dependent upon system configuration - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 23
how to: • Install the I/O shield • Install and remove the desktop board • Install and remove a processor • Install and remove memory • Install and remove an AGP retention mechanism and card • Connect the IDE cable • Set the BIOS jumper • Clear passwords • Replace the battery Before You Begin CAUTION - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 24
Intel Desktop Boards D845PT and D845BG Product Guide Installing the I/O Shield The board comes with an I/O shield. When installed promotes correct airflow within the chassis. Install the I/O shield before installing the board in the chassis. Place the shield inside the chassis as shown in Figure - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 25
Installing and Replacing Desktop Board Components Installing and Removing the Desktop Board Refer to your chassis manual for instructions on installing and removing the board. The D845PT board is secured to the chassis by six screws and the D845BG board by eight screws. See Figure 5 and Figure 6 for - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 26
Intel Desktop Boards D845PT and D845BG Product Guide Figure 6 shows the location of the mounting holes for the D845BG board. Figure 6. D845BG Board Mounting Holes OM12626 26 - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 27
(RM) base and processor to the desktop board are given below. For instruction on how to install the processor fan heatsink, refer to the processor installation manual or the Intel customer support World Wide Web site: http://support.intel.com/support/processors/pentium4/intnotes478.htm Installing - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 28
Intel Desktop Boards D845PT and D845BG Product Guide 3. Remove the four white pushpins from the RM base, if installed. 4. Align the four fasteners of the processor fan heatsink RM base (A) with the corresponding holes in the desktop board (B). Gently press down the four corners of the base until it - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 29
mPGA478B A Figure 10. Installing a Processor OM12078 Installing the Processor Fan Heatsink For instructions on how to install the processor fan heatsink, refer to the boxed processor manual or the Intel World Wide Web site at: http://support.intel.com/support/processors/pentium4/intnotes478.htm - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 30
Intel Desktop Boards D845PT and D845BG Product Guide Connecting the Processor Fan Heatsink Cable Connect the processor fan heatsink cable to the processor fan connector (see Figure 11). OM12630 Figure 11. Connecting the Processor Fan Heatsink Cable to the Processor Fan Connector Removing a Processor - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 31
with all applicable Intel SDRAM memory specifications, the boards require DIMMs that support the Serial Presence Detect (SPD) data structure. You can access the PC Serial Presence Detect Specification at: http://www.intel.com/technology/memory/pcsdram/spec/ The boards have two 184-pin DIMM sockets - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 32
Intel Desktop Boards D845PT and D845BG Product Guide 1 0 Figure 12. Installing a Memory Module OM12631 5. Make sure power cord. Removing DIMMs To remove a memory module, follow these steps: 1. Observe the precautions in "Before You Begin" on page 23. 2. Turn off all peripheral devices connected - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 33
Installing and Replacing Desktop Board Components Installing and Removing the AGP Retention Mechanism and Card The AGP connector supports 1.5 V to remove the AGP card RM, follow the instructions on page 36. ✏ NOTE All D845PT and D845BG boxed desktop boards may not include an AGP RM. See "Installing - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 34
Intel Desktop Boards D845PT and D845BG Product Guide The AGP card RM (see Figure 14) encloses the board's AGP connector and stabilizes the AGP card. Place the board (component side up) on a flat, supportive surface, preferably on the anti-static bag in which the board was shipped. Follow the steps - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 35
and Replacing Desktop Board Components Installing an AGP Card Follow these instructions to install an AGP card: 1. Place the AGP card in the AGP connector. 2. Press down on the card until it is completely seated in the AGP connector and the card retention notch snaps into place around the RM pin - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 36
Intel Desktop Boards D845PT and D845BG Product Guide Removing the AGP Card Retention Mechanism Follow these instructions to remove the AGP card retention mechanism: 1. Using diagonal cutters (A), cut the loop (B) joining the two sides of the retention mechanism (see Figure 16). 2. Spread the sides - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 37
Installing and Replacing Desktop Board Components Connecting the IDE Cable The Intel® boxed desktop board package include an IDE cable. The cable connects two drives to the desktop board. The cable supports the Ultra DMA-33 and ATA-66/100 transfer protocols. Figure 17 shows the correct installation - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 38
Intel Desktop Boards D845PT and D845BG Product Guide Setting the BIOS Configuration Jumper Block CAUTION Always turn off the power and unplug the power cord from the computer before changing the jumper. Moving the jumper with the power on may result in unreliable computer operation. The location of - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 39
and Replacing Desktop Board Components Clearing Passwords This procedure assumes that the board is installed in the computer and the configuration jumper block is set to normal mode. 1. Observe the precautions in "Before You Begin" on page 23. 2. Turn off all peripheral devices connected to the - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 40
Intel Desktop Boards D845PT and D845BG Product Guide Replacing the Battery A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the computer is not plugged into a wall socket, the battery has an estimated life of three years. When the computer is plugged in, the - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 41
Installing and Replacing Desktop Board Components VORSICHT Bei falschem Einsetzen einer neuen Batterie besteht Explosionsgefahr. WAARSCHUWING Er bestaat ontploffingsgevaar als de batterij wordt vervangen door een onjuist type batterij. Batterijen moeten zoveel mogelijk worden gerecycled. Houd u bij - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 42
Intel Desktop Boards D845PT and D845BG Product Guide To replace the battery, follow these steps: 1. Observe the precautions in "Before You Begin" (see page 23). 2. Turn off all peripheral devices connected to the computer. Disconnect the computer's power cord from the ac power source (wall outlet or - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 43
BIOS with the Intel Express BIOS Update utility: 1. Go to the Intel customer support World Wide Web site: http://support.intel.com/support/motherboards/desktop/ 2. Navigate to the D845PT or D845BG page and click the Express BIOS Update utility file for the D845PT or D845BG board's BIOS. 3. Download - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 44
navigating to the D845PT or D845BG page on the Intel customer support World Wide Web site: http://support.intel.com/support/motherboards/desktop ✏ NOTE Please review the instructions distributed with the update utility before attempting a BIOS update. The Intel Flash Memory Update Utility allows you - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 45
jumper block (J6F2) (see Figure 18). 3. Remove the jumper from all pins as shown below to set recovery mode for Setup. 3 1 4. Insert the bootable BIOS update diskette into diskette drive A. 5. Replace the computer cover, connect the power cord, turn on the computer, and allow it to boot. The - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 46
Intel Desktop Boards D845PT and D845BG Product Guide 46 - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 47
not show the latest settings. For the latest BIOS settings, refer to the Intel® Desktop Board D845PT/D845BG Technical Product Specification or the Intel customer support World Wide Web site: http://support.intel.com/support/motherboards/desktop ✏ NOTE For reference purposes, you should write down - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 48
Intel Desktop Boards D845PT and D845BG Product Guide Table 7 shows the function keys available for menu screens. Table 7. BIOS Setup Program Function Keys BIOS Setup Program Function Key or or Description Selects a different menu screen Moves cursor up or - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 49
. Cache lookups are not performed. Both the video driver and the application must support Write Combining. Selects UnCacheable (UC) video memory cache mode. This setting identifies the video memory range as uncacheable by the processor. Memory writes are performed in program order. Cache lookups are - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 50
Intel Desktop Boards D845PT and D845BG Product Guide Main Menu Maintenance Main Advanced Security Power Boot Exit Table 10 describes the Main Menu. This menu reports processor and memory information and is used to configure the system date and system time. Table 10. Main Menu Feature BIOS - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 51
Program Advanced Menu Maintenance Main Advanced Security Power PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration When selected, displays the Peripheral Configuration submenu. Specifies type of connected IDE device. When selected, displays the Diskette Configuration - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 52
Intel Desktop Boards D845PT and D845BG Product Guide PCI Configuration Submenu Maintenance Main Advanced Security Power Options • Auto (default) • 9 • 10 • 11 • Auto (default) • 9 • 10 • 11 • Auto (default) • 9 • 10 • 11 • Auto (default) • 9 • 10 • 11 No options Description Allows selection of - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 53
• Off • On (default) Description Specifies if manual configuration is desired. No lets the BIOS configure all devices. This setting is appropriate when using in flash memory on the next boot. Yes clears the PCI/PnP configuration data stored in flash memory on the next boot. Specifies the power-on - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 54
Intel Desktop Boards D845PT and D845BG Product Guide Peripheral Configuration Submenu Maintenance Main Advanced Security Power PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Diskette Configuration Event Log Configuration Video Configuration Boot This submenu - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 55
) DMA Channel (This feature is present only when Parallel Port Mode is set to ECP) Audio Device LAN Device (This feature is present only when there is onboard LAN) Legacy USB Support Options • Disabled • Enabled • Auto (default) • Output Only • Bi-directional (default) • EPP • ECP • 378 (default - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 56
Intel Desktop Boards D845PT and D845BG Product Guide IDE Configuration Submenu Maintenance Main Advanced Security Power 15 Seconds • 21 Seconds • 30 Seconds Primary IDE Master No options Reports type of connected IDE device. When selected, displays the Primary IDE Master submenu. Primary IDE - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 57
Boot Configuration Power Boot Exit Peripheral 4 Sectors • 8 Sectors • 16 Sectors (default) • Auto (default) • 0 • 1 • 2 • 3 • 4 Displays the type of drive installed. Specifies the from the hard disk drive to memory. Check the hard disk drive's specifications for optimum setting. Specifies the - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 58
Intel Desktop Boards D845PT and D845BG Product Guide Table 16. Primary/Secondary IDE Master/Slave Submenus (continued) Feature Ultra DMA Cable Detected (Note) Options • Disabled (default) • Mode 0 • Mode 1 • Mode 2 • Mode 3 • Mode 4 • Mode 5 None Description Specifies - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 59
Using the Setup Program Event Log Configuration Submenu Maintenance Main Advanced Security Power PCI Configuration Boot Configuration Peripheral Configuration IDE Configuration Diskette Configuration Event Log Configuration Video Configuration Boot The submenu shown in Table 18 is used to - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 60
Intel Desktop Boards D845PT and D845BG Product Guide Video Configuration Submenu Maintenance Main Advanced Security Power PCI 64MB (default) • 256MB • AGP (default) • PCI Description Amount of system memory available for direct access by the AGP device. Selects primary video adapter to be used - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 61
default) Clears the user password. • No • Limited • No Access Sets BIOS Setup Utility access rights for user level. • View Only • Full ( If both Legacy USB Support (in the Peripheral Configuration submenu) and Unattended Start (in the Security menu) are enabled, USB aware operating systems can - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 62
Intel Desktop Boards D845PT and D845BG Product Guide Power Menu Maintenance Main Advanced Security Power The menu shown in Table 21 is used to set power management features. Boot Exit Table 21. Power Menu Feature Options Description ACPI No Options When selected, displays the ACPI submenu. - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 63
Program Boot Menu Maintenance Main Advanced Security Power Boot The menu shown in Table 23 is used to set the boot features and the boot sequence. Exit Table 23. Boot Menu Feature Quiet Boot Intel® Rapid BIOS Boot Scan User Flash Area USB Boot Boot Device Priority Hard Disk Drives Removable - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 64
Intel Desktop Boards D845PT and D845BG Product Guide Boot Device Priority Submenu Maintenance Main Advanced Security Power Boot below. The BIOS supports up to sixteen total boot devices in any combination of the boot device types below, with respect to these maximums per type. • Removable - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 65
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 Maintenance Main Advanced Security Power The submenu in shown Table 26 is for setting - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 66
Intel Desktop Boards D845PT and D845BG Product Guide ATAPI CD-ROM Drives Maintenance Main Advanced Security Power Boot Exit Boot Device BIOS reads the Setup values from flash memory. If this memory is corrupted, the BIOS reads the custom defaults. If no custom defaults are set, the BIOS - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 67
Board Connectors The board connectors can be divided into three groups: • Back panel connectors • Midboard connectors Audio connectors Power and hardware connectors Add-in board and peripheral interface connectors • Front panel connectors CAUTION Many of the midboard and front panel connectors - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 68
Intel Desktop Boards D845PT and D845BG Product Guide Back Panel Connectors Figure 20 shows the back panel connectors on the board. A E G C BD F H I J KL Item A B C D E F G H I J K L Description PS/2 mouse port PS/2 keyboard port USB port 0 USB port 1 Parallel port Serial port A RJ-45 ( - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 69
9 10 1 4 4 1 Technical Reference Item A B C Description Front panel audio (see Table 29 for pin assignments) Auxiliary line in CD-ROM Figure 21. Audio Connectors OM12637 Color Black White Black Table 29 shows the pin assignments for the front panel audio connector. Table 29. Front Panel - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 70
desktop board. The D845PT and D845BG boards require an ATX12V compliant power supply to function according to desktop board specifications. Both boards have two ATX12V compliant power supply connectors that are needed to provide extra power to the Intel 845 chipset and Pentium 4 processor. Figure - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 71
the add-in card and peripheral interface connectors for the D845PT board. A B C DE 2 40 1 39 2 40 1 39 2 34 1 33 Item A B C D H Description CNR (optional) PCI bus connector 3 PCI bus connector 2 PCI bus connector 1 G F OM12639 Item E F G H Description AGP Secondary IDE Primary - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 72
Intel Desktop Boards D845PT and D845BG Product Guide Figure 24 shows the add-in card and peripheral interface connectors for the D845BG board. A B C D E F GH 2 40 1 39 2 40 1 39 2 34 1 33 Item A B C D E F Description CNR (optional) PCI bus connector 6 PCI bus connector 5 PCI bus - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 73
10 16 15 2 1 Item A B C D B CD OM12641 Description Front panel USB (see Table 31 for pin assignments) Front panel Alternate power/sleep LED Front panel audio Figure 25. Front Panel Connectors Table 31 shows the pin assignments for the front panel USB connectors. Table 31. Front Panel USB - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 74
Intel Desktop Boards D845PT and D845BG Product Guide Desktop Board Resources Memory Map Table 32. System Memory Map Address Range (decimal) Address Range (hex) 1024 K - 2097152 K 100000 - 7FFFFFF 960 K - 1024 K F0000 - FFFFF 896 K - 960 K E0000 - EFFFF 800 K - 896 K C8000 - DFFFF 640 K - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 75
- 0CFB** 0CF9*** 0CFC - 0CFF FFA0 - FFA7 FFA8 - FFAF Size 16 bytes 2 bytes 4 bytes 1 byte 1 byte 1 byte 2 bytes 2 bytes 16 bytes 1 byte 2 bytes 2 bytes 32 bytes 1 byte 8 bytes 8 Fast A20 and PIC PIC APM control DMA Numeric data processor Secondary IDE channel Primary IDE channel LPT3 LPT2 COM4 / - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 76
Intel Desktop Boards D845PT and D845BG Product Guide Table 34. I/O Map (continued) Address (hex) 96 contiguous bytes starting on a 128-byte divisible boundary 64 contiguous bytes starting on a 64-byte divisible boundary 32 contiguous bytes starting on a 32-byte divisible boundary 16 contiguous - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 77
, cascade interrupt from slave PIC 3 COM2* 4 COM1* 5 LPT2 (Plug and Play option) / ** 6 Diskette drive controller 7 LPT1* 8 Real time clock 9 ** 10 ** 11 ** 12 Onboard mouse port (if present, else user available) 13 Reserved, math coprocessor 14 Primary IDE (if present, else - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 78
Intel Desktop Boards D845PT and D845BG Product Guide 78 - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 79
A Error Messages and Indicators The D845PT and D845BG boards report POST errors in two ways: • By sounding a beep code • By displaying an error message on the monitor BIOS Beep Codes The BIOS beep codes are listed in Table 36. The BIOS also issues a beep code (one long tone followed by two short - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 80
Intel Desktop Boards D845PT and D845BG Product Guide BIOS Error Messages When a recoverable error occurs during the POST, the BIOS displays an error message describing the problem. Table 37. BIOS Error Messages Error Message Explanation GA20 Error An error occurred with Gate-A20 when switching - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 81
Error Messages and Indicators Table 37. BIOS Error Messages (continued) Error Message Memory Size Decreased Memory Size Increased Memory Size Changed No Boot Device Available Off Board Parity Error On Board Parity Error Parity Error NVRAM / CMOS / PASSWORD cleared by Jumper Pressed - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 82
Intel Desktop Boards D845PT and D845BG Product Guide 82 - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 83
D845PT and D845BG desktop boards. • Instructions and precautions for integrators who are installing this desktop board in a chassis. Safety Regulations This desktop board , (Class B) CISPR 24: 1997 Title Title 47 of the Code of Federal Regulations, Parts 2 and 15, Subpart B, Radiofrequency Devices - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 84
Intel Desktop Boards D845PT and D845BG Product Guide Product Certification Markings The desktop boards have the following product certification (tick) mark (component side), followed by Intel supplier code number, N-232. • Printed wiring board manufacturer's recognition mark: consists of a unique - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 85
and test the desktop board, observe all warnings and cautions in the installation instructions. To avoid injury, be careful of: • Sharp pins on connectors • Sharp pins on printed circuit assemblies • Rough edges and sharp corners on the chassis • Hot components (like processors, voltage regulators - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 86
Intel Desktop Boards D845PT and D845BG Product Guide Ensure Electromagnetic Compatibility (EMC) Compliance Before computer integration, make sure that the power supply and other modules or peripherals, as applicable, have passed Class B EMC testing and are marked accordingly. In the installation - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 87
replaced. Replace with only the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions. Use Only for Intended Applications All Intel desktop processor boards are evaluated as Information Technology Equipment (I.T.E.) for use - Intel D845BG | Intel Desktop Board D845PT/D845BG Product Guide - Page 88
Intel Desktop Boards D845PT and D845BG Product Guide 88
Intel
®
Desktop Boards
D845PT and D845BG
Product Guide
Order Number: A72165-001