The following is an integration guide designed to inform you of the new integration issues related to the desktop D850EMD2 and D850EMV2 platform. The following information is a progressive integration brief providing information needed to correctly build an Intel® Pentium® 4 processor platform.
The D850EMD2 and D850EMV2 boards support the Intel® Pentium® 4 processor in the 478-pin package. For a detailed list of the supported processors, refer to the processor support table in the Components section of this integration guide. Refer to the Pentium 4 processor page for detailed processor installation information. Note: The processor fan heatsink power cable should be installed into the fan power header labeled CPU Fan on the board.
Install RIMMs into bank 0 first. If the desired memory configuration has been achieved, insert Continuity RIMM (CRIMM) into bank 1. Install a CRIMM in each unused memory socket or the board will not boot. High insertion force may be required to install the RIMMSs and CRIMMs. Use caution when inserting the RIMMs and CRIMMs to prevent the board from flexing.
The boards support Ultra ATA/66 and Ultra ATA/100 transfer rates. The board package includes two IDE cables. The 40-contact cable supports the Ultra DMA-33 transfer protocol. The 40-contact 80-conductor cable supports ATA-66 and ATA-100 transfer protocols. If you are using an Ultra ATA/66 or Ultra ATA/100 hard drive, you must use the 40-pin, 80-conductor IDE cable. Both the board and the cable are backward compatible with previous IDE transfer protocols. Install the IDE cable in the following orientation:
- Plug the blue connector at the end of the cable into the desktop board.
- Plug the other end connector into the master drive.
- Plug the middle connector into the slave drive if it is present.
Note: For best performance, place Ultra ATA/66/100 devices on the primary IDE channel and non-Ultra ATA/66/100 devices on the secondary IDE channel. Also, do not connect an ATA device as a slave on the same IDE cable as an ATAPI master device.
The AGP connector supports 1.5V 4X and 2X AGP cards. The connector is keyed so that only 1.5V AGP cards may be installed. It should be noted that there are currently AGP cards available that are keyed for 1.5V connectors, but they can be configured to run at 3.3V. It is important to only use the latest AGP cards that support 1.5V 4X and 2X cards.
When using notched cards, install the AGP card retention mechanism before installing the card. The retention mechanism should not be used with unnotched cards.
Some chassis have a three-position, two-conductor cable for the front panel system power LED. The D850EMD2 and D850EMV2 boards have a 1x3 header next to the front panel connector. Use the 1x3 header for three-position power LED cables.
Some older operating systems require that an additional audio cable be connected from the CD-ROM drive to the motherboard in order listen to CD's directly from the CD-ROM drive. In this situation, connect the CD-ROM audio cable to the connector labeled "CD IN".
