I thank you Chas for your help. If you’re asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. I have tried the Intel web site but couldn’t find one for NT4. While Intel publishes “reference” drivers for their motherboard chip-sets, they do not at least publicly offer “reference” drivers for their Ethernet Adapter chips. Davicom DM data sheet , http: The transmitter works but the receiver tends to produce many unexplained errors leading to very poor overall performance.

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The dc driver detects this condition and will salvage the frame; however, it incurs a serious performance penalty in the process. Note that this condition only occurs when warm booting from another operating system.

10/100Mbps PCI Fast Ethernet Card with ACPI Support

The dc driver supports the following media types: If you power down your system prior to booting FreeBSD, the card should be configured correctly. But, someone else manufactured the adapter card itself.

Do not rec advertisements, offensive material, profanity, or personal attacks. On the other hand, if what you have is a third party Ethernet adapter, or an Ethernet adapter built into the motherboard or a laptop, you should look to the card or computer manufacture for a driver. The chips appear to upload several kilobytes of garbage data along with the received frame data, dirtying several RX buffers instead of just the expected one.


Davicom DM data sheethttp: The numbers are documented in the app notes, but the exact meaning of the bits is not. This can happen if the device is unable to deliver interrupts for some reason, of if there is a problem with the network connection cable or network equipment that results in a loss of link.

If you’re asking for technical help, please be sure to include fec your system info, including operating system, model number, and 211143 other specifics related to the problem.

Re: DEC x based network card list

2113 Some clone chips duplicate the fairly closely while others only maintain superficial similarities. Take a close look at the circuit board itself. The A seems to have a problem with 10Mbps full duplex mode.

Yes, Intel made the Ethernet controller IC. These are what Intel’s chip-set drivers are. I believe that there are so many options involved in implementing the chip that a “reference” driver would be of very limited function.

DEC 21143x based network card list

I think you’re right that the card may not have been made by Intel though the chip was. The “Add Comment” button is back, so perhaps you have the buttons to rate answers back too. This conversation is currently closed to new comments.

Others use different receiver filter programming mechanisms. Once you rate any answer as acceptable, you must close the question. Create a new discussion If you’re asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem.


The controller loses all of its PCI configuration in the D3 state, so if the BIOS does not set it back to full power mode in time, it will not be able to configure it correctly. Apparently, the add comment feature is broken at the moment.

Track this discussion and email me when there are updates. Looking over the data at Intel’s web site, the was designed for use on CardBus based mobile Ethernet adapters. At least one supports only chained DMA descriptors most support both chained descriptors and contiguously allocated fixed size rings.

The dc driver supports the following media options: Consequently, autonegotiation is not currently supported for this chipset: As 12143 the driver, I must conclude that you have a third party network adapter using the Intel chip. If the device you have is NOT an Intel made adapter, you are best off looking up the manufacture at a site like www.

I wonder if anybody can help me. Anyway, I had searched everywhere and tried all available drivers.

Note that the baseTX media type may not be available on certain Intel adapters which support 10Mbps media attachments only.