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At least one supports only chained DMA descriptors most support both chained descriptors and contiguously allocated fixed size rings. 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.
But, someone else manufactured the adapter card itself. The A does not exhibit this problem. The dc driver will watch for this condition and requeue the setup frame until it is transferred successfully. 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.
dec : Problem FULLDUPLEX Performance
If you see this message sec boot time and the driver fails to attach the device as a network interface, you will have to perform a second warm boot to have the device properly configured.
As to the driver, I must conclude that you have a third party network adapter using the Intel chip.
Anyway, I had searched everywhere and tried all available drivers. 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.
Some support only MII media attachments.
From there those features pop up. Some chips especially the PNIC also have peculiar bugs.
DEC 21143x based network card list
The mediaopt option can also be used to enable full-duplex operation. All other modes on the A seem to work correctly.
I have tried the Intel web site but couldn’t find one for NT4. On the other hand, if what you have is a third party Ethernet adapter, or an Ethernet adapter built into the motherboard or a ded, you should look to the card or computer manufacture for a driver.
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. Davicom DM data sheethttp: If the device you have is NOT an Intel made adapter, you are best off looking up the manufacture at a site like www. The dc driver supports the following media options: Some operating systems place the controller in low power mode when shutting down, and some PCI BIOSes fail to bring the chip out of this state before configuring it.
Intel does not provide “reference” drivers for it’s network interface chips. While Intel publishes “reference” drivers for their motherboard chip-sets, they do not at least publicly offer “reference” drivers for their Ethernet Adapter chips.
Apparently, the add comment feature is broken at the moment. All of supported chipsets have the same general register layout, DMA descriptor format and method of operation. Reset Post Submit Post.
Note that this condition only occurs when warm booting from another operating system.
DEC – ES40 Emulator
The 82c and 82c PNIC chips also have a receiver bug that sometimes manifests during periods of heavy receive and transmit activity, where the chip will improperly DMA received frames to the host.
Try searching for a Realtek driver for theit 21413 work with NT4. This system configuration variable can dwc set in the Open Firmware boot monitor using the setenv command or by eeprom 8. These chips are used by many vendors which makes it difficult to provide a complete list of all supported cards. The PNIC chips also sometimes generate a transmit underrun error when the driver attempts to download the receiver filter setup frame, which can result in the receive filter being incorrectly programmed.
The driver tries to detect this condition and bring the adapter back to the D0 full power state, but this may not be enough to return the driver to a fully operational condition.