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End of Interactive Support
Intel is announcing the end of interactive support for the Intel® Desktop Board D820LP. See the End of Interactive Support Announcement for details.
Contents
For technical support, contact your place of purchase -- which will have the most current information about your specific product or configuration. You also can check the Intel FAQ for that product.
General Questions:
Memory:
Suspend to RAM and Power Supplies:
Jumpers/BIOS Setup Options:
Input/Output:
General Questions:
- How do the Intel Desktop Board VC820 and Intel Desktop Board D820LPs differ?
The Intel Desktop Board VC820 and Intel Desktop Board D820LPs are based on the same basic hardware design and even use the same BIOS code. However, their feature sets do differ. The primary difference is the processor connector used. The Intel Desktop Board VC820 supports 242-contact slot connector processors while the Intel Desktop Board D820LP accepts FC-PGA processors. The Intel Desktop Board VC820 supports both Pentium® II and Pentium III processors running at 100 and 133 MHz bus speeds but the Intel Desktop Board D820LP supports Pentium III processors only. Also, the Intel Desktop Board D820LP does not have the audio option nor the AMR connector as the Intel Desktop Board VC820 does.
- What is Flip Chip Pin Grid Array (FC-PGA)?
FC-PGA was developed to improve the thermal dissipation of the heat generated by faster speed processors. The die has been flipped so that the heat is directed away from the desktop board. This feature, when combined with active heatsinks is an optimal cooling solution.
- What processor heat sink solution do I need for the Intel Desktop Board D820LP desktop board?
It is recommended that a heat sink is used that is large enough for sufficient cooling of the processor. Active heat sinks require less room and mass than the passive heat sinks.
Caution:System cooling requirements vary depending on the particular system configuration, and it is the responsibility of the system designer/integrator to ensure that the Pentium III processor's maximum case temperature (at thermal plate) is not exceeded. For more details on the thermal considerations, refer to the Intel Desktop Board D820LP Technical Product Specification (TPS) and the Intel Desktop Board D820LP Specification Update (DBSU).
- Why do the Intel Desktop Board D820LP and the Intel Desktop Board VC820 boards use the same BIOS?
The Intel Desktop Board D820LP and Intel Desktop Board VC820 desktop boards are based on the same design. Because the hardware design of the Intel Desktop Board D820LP and Intel Desktop Board VC820 are so alike, it is possible to implement the same BIOS software for both boards.
- What new features are incorporated into the Intel® 820 chipset?
The Intel® 820 chipset features support for 133 MHz host bus speed and AGP 4x graphics cards. In addition, the Intel 820 chipset supports Ultra ATA/66 hard drives, the ACPI S3 State of Suspend-to-RAM (STR), as well as the faster I/O hub architecture.
- Besides the 820 chipset features mentioned above, what key new features are included on the Intel Desktop Board D820LP?
The Intel Desktop Board D820LP includes color coded back panel connectors to both make system connections more intuitive and to help integrators meet PC99 specs, and also provides diagnostic LEDs on the I/O back panel to help debug "no boot" problems.
- What type of AGP cards can I use on the Intel Desktop Board D820LP?
The Intel Desktop Board D820LP supports operation of AGP 1.0 and AGP 2.0 cards operating at 1x, 2x and 4x transfer speeds. The Intel Desktop Board D820LP has a universal connector which accepts AGP cards which are keyed for 1x / 2x or 4x. The universal AGP connector used on the Intel Desktop Board D820LP includes support for AGP 2.0 specification cards using an AGP card retention mechanism.
- Can I use an AGP card retention mechanism with any AGP card?
The AGP retention mechanism is made for use with newer AGP cards that meet the AGP 2.0 specification. These newer cards have a special slot at the back of the card, which interlocks with a small plastic stud on the retention mechanism. Cards that don't meet the new AGP 2.0 specification should not be used with the retention mechanism because the small plastic stud may interfere with correct installation and retention of the card.
- How many expansion slots does the Intel Desktop Board D820LP contain?
There are five dedicated PCI slots and an AGP graphics card connector. This configuration allows for a maximum of six add-in cards to be integrated with this board. All PCI slots support bus-mastering devices.
- My Intel Desktop Board D820LP does not boot, what could be wrong?
Make sure that the processor has a bus speed of 100 or 133 MHz rather than 66 MHz. A hardware lockout is provided on the Intel Desktop Board D820LP which prevents power-up when a 66 MHz host bus processor is installed.
- What type of chassis and power supply does the Intel Desktop Board D820LP use?
The Intel Desktop Board D820LP is an ATX form factor board. The board requires an ATX 2.01 compliant chassis and power supply. For information on the ATX form factor see the ATX form factor website
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- What type of battery is used in the Intel Desktop Board D820LP?
Standard (3 volt, CR2032) coin cell is used to supply power to the RTC when power is not available from the power supply.
- How do I disable the onboard features?
Onboard features can be disabled through the Intel Desktop Board D820LP BIOS Setup utility. Refer to the Intel Desktop Board D820LP TPS (Technical Product Specification) for more details.
- Why doesn't my Intel Desktop Board D820LP system power-up?
The Intel Desktop Board D820LP requires 3.3 volts from the power supply, as well as specific requirements for power sequencing and limits. A momentary switch should be used for the power on/off switch and the sleep/resume switch. The power supply chosen must meet the ATX 2.01 or later specification. In addition the Intel Desktop Board D820LP requires larger currents of 5 VSB to support the new features of the desktop board. Please refer to the Technical Product Specification and the Desktop Board Specification Updates for more complete information.
- Why do the drivers on Intel's public web site appear to match revisions of the drivers available on some vendor public web sites?
Intel performs internal testing on all drivers before posting them on the Intel developer desktop board web site. In many cases, it is not practical to test all drivers on all desktop boards. For this reason, application vendors may release drivers that have not been tested by Intel. These drivers may be available on the vendor public site, but not on the Intel public site. This does not mean the drivers do not work; it simply indicates that Intel has not validated the drivers. In some case the drivers, on a non-Intel site, correct implementation issues that are not found on the Intel desktop board.
- Why does the Windows* 95 device manager report a resource conflict with my add-in card and onboard PCI devices?
Windows* 95 device manager reports a conflict with a "Intel® 82820 Processor to AGP controller" for AGP cards. For PCI cards and onboard PCI devices the Windows 95 device manager reports a conflict with a "Intel® 82801AA PCI Bridge". The "Intel® 82820 Processor to AGP controller" and the "Intel® 82801AA PCI Bridge" are both components of the Intel® 82820 chipset which Windows 95 cannot properly identify. This issue will not affect the functionality of Windows 95, with AGP or PCI devices.
Memory:
- What is RDRAM* memory?
Direct Rambus RDRAM* memory uses a new technology that increases processor-to-memory bandwidth up to 1.6 GB/sec.
- What types of memory modules can I install on the Intel Desktop Board D820LP?
The Intel Desktop Board D820LP supports dynamic memory detection for one or two 2.5V, 168-pin (64/128 Mbit Non-ECC or 72/144 Mbit ECC), 400 MHz, 356 MHz, and 300 MHz RDRAM RIMM* modules. The devices are known as PC800, PC700, and PC600 respectively.
Note: The Intel Desktop Board D820LP BIOS will support only RIMM modules with properly programmed SPD devices.
- What memory configurations are supported on the Intel Desktop Board D820LP?
The Intel Desktop Board D820LP has two RIMM sockets that support RDRAM RIMMs. Memory can be installed in one or two of the RIMM sockets. The Intel Desktop Board D820LP can support minimum system memory configurations of 32 MB and a maximum configuration of 512 MB. The Intel Desktop Board D820LP currently supports RIMM module sizes from 64 MB to 256 MB.
Note: There can be no empty RIMM connectors. RIMM connectors without a RIMM installed must be populated with Continuity RIMMs. The Continuity RIMMs are used to provide signal paths for the memory modules.
- What kind of problems might occur in an RDRAM memory based system that uses non-compliant RIMMs?
The most extreme example of memory failure is when the system hangs while booting. This can happen when the system is not able to communicate properly with the memory. In less extreme cases, the memory may generate intermittent errors or random system failures during stress.
- Does Intel qualify memory for use on Intel desktop boards?
No. OEMs and system integrators are solely responsible for qualifying the memory that they include in their systems. Intel will perform only limited testing of a few memory modules to verify functionality of the desktop board design. Intel does offer a program for third parties to self-test their own memory and to report passing results to Intel for inclusion on our Internet based tested memory list.This list of memory vendors is available at the Intel Desktop Board D820LP System Memory web page. -->
Suspend to RAM and Power Supplies:
- What is Suspend-to-RAM?
Suspend to RAM (STR) is a technology that is closely associated with the S3 state of the ACPI specification. STR allows a properly configured system to go into a low power state while saving information to main memory about the system's configuration, open applications, and active files. While in the low power (STR) state, memory remains powered to retain the system information while most other components turn off to conserve energy. Fans are turned off to provide silent operation and to minimize power consumption. Properly configured systems in STR typically can use less than 5 watts.
The system can be left in the STR State and can be awakened periodically to perform preprogrammed events such as downloading e-mail or searching and filtering web content. A network access or an incoming phone call can also wake the PC and trigger a desired response, similar to a telephone answering machine. When an incoming request arrives via a "wake device" or the user wishes to resume operation, the PC comes alive in a few seconds by using the information saved in memory to restore the system.
Note: If power is interrupted while the system is in STR the system will reboot normally when power is restored. All data that has not been stored prior to STR will be lost.
- What is a "wake device"?
Any device, which is capable of waking the system from the STR State is a wake device. A wake device is typically a network card or a fax/modem that is compliant with the PCI 2.2 specification. When the system is powered down into the STR State, these wake devices are provided standby current by the power supply. These devices are in a low power state during STR, and use only enough current to recognize incoming activity (e.g. a network request or a phone call). When an incoming activity is detected, these devices can wake the system.
- Do I need a special power supply to support Suspend to RAM? How much standby current should my power supply be able to supply in order to support Suspend to RAM?
The power supply used must provide enough standby current to support the needs of all wake capable devices in the system. For proper system operation, the power supply must provide at least that amount of standby current used by the desktop board devices and all externally connected wake devices. This includes both components on the Intel Desktop Board D820LP, non-self powered USB devices and your add-in cards. To calculate this amount, add up the amount of standby current required by the various components which can wake the system from the ACPI S3 (STR) state. For further details on how to determine the necessary stand by current, consult the Intel Desktop Board D820LP TPS and the Intel Desktop Board D820LP DBSU.
Jumpers/BIOS Setup Options:
- How should the jumpers be set on my Intel Desktop Board D820LP?
There are two standard jumper blocks on the Intel Desktop Board D820LP. One jumper block (reference J7B1) is used to access the BIOS setup configuration mode. Configuration mode allows access to the Maintenance menu in addition to the standard setup menus. All BIOS configuration options are made available through the BIOS configuration screens. The other jumper block (reference J4A2) is used to provide user control over system wake events from the ACPI S5 state.
If the jumper J4A2 is set to connect pins 1-2 (default), the system resumes from an S5 state when a PME# or Wake on LAN* technology event is asserted. If the jumper is set to connect pins 2-3, the system will no longer resume from these events from an S5 state. This feature is useful if, for example, the user does not wish their dial-up modem to wake their previously powered-off computer whenever the telephone rings. The jumper setting does not affect S3 resume events.
A third optional jumper J8C1 controls the routing of USB port 1. The port is either routed to the top back-panel USB connector if pins 1-2 and 4-5 are jumpered or to the header at J9H1 (if present) if pins 2-3 and 5-6 are jumpered. Refer to the Quick Start Guide, Technical Product Specification or Product Guide for information on configuration jumper settings.
Input/Output:
- Does the Intel Desktop Board D820LP support Ultra ATA/66 hard drives?
Yes. One of the new features of the Intel 820 chipset is its ability to support both Ultra ATA transfer rates of 33 MB/sec and 66 MB/sec. To realize a true throughput performance difference, a hard drive may need to implement higher spindle speeds, such as 7200 RPM, and a large onboard buffer size, such as 2 MB, to take advantage of the increased bandwidth available on the IDE channel.
- Does the IDE cable provided with the Intel Desktop Board D820LP support both Ultra ATA/66 and previous IDE transfer protocols?
The 40-pin, 80-conductor cable provided with the Intel Desktop Board D820LP is fully backward compatible with all IDE transfer protocols. It will also support Ultra ATA/66 if used with one or two Ultra ATA/66 drives attached. If integrating a system with a combination of Ultra ATA/66 drives and IDE drives using previous transfer protocol, it is recommended that the Ultra ATA/66 drives be attached to the primary IDE channel using the provided cable. The other drives should be attached to the secondary channel using a good quality, 40-connector IDE cable (not provided with the Intel Desktop Board D820LP).
- Can I mix Ultra ATA devices with other devices on the same IDE channel?
Yes. However, for better performance we recommend the Ultra ATA capable devices be attached to their own IDE channel, separate from other non-Ultra ATA capable drives.
- Why doesn't my CD-ROM or second IDE hard drive work with Windows 95?
Two known issues involve CD-ROM or secondary hard drives: 1) Older versions of Windows 95 or Windows 98 may not correctly recognize the Intel® 82801AA ICH IDE controller used on Intel desktop boards, causing the BIOS to disable the secondary IDE channel. This can result in IDE devices, such as CD-ROM drives, not being detected or disappearing after the system is rebooted. A utility is available to update the MSHDC.INF file and resolve the issue. As a temporary work-around, the CD-ROM can be installed on the primary IDE channel until the INF update utility has been run. 2) Windows 95 or Windows 98 may fail to recognize a CD-ROM drive that does not comply with the ATAPI specification.
- Why isn't my IDE device displayed during power-up POST?
All IDE devices must be ATA4 compliant. Cable length is limited to 18 inches. IDE devices not selected as auto-detect in the BIOS setup are not displayed as part of the POST tests.
- Can I use a second floppy on my Intel Desktop Board D820LP?
The Intel Desktop Board D820LP does not provide support for a second floppy device.
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