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File Name: davicom_dm9009_39098.zip
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If you see this Davicom DM9009 at 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 Davicom DM9009. Note that this condition only occurs when warm booting from another operating system. If you power down your system prior to booting FreeBSDthe card should be configured correctly.

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Davicom DM9009 A seems to have a problem with 10Mbps full duplex mode. The transmitter works but the receiver tends to produce many unexplained errors leading to very poor overall performance.

  • Ubuntu Manpage: dc — DEC/Intel and clone 10/ Ethernet driver
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  • Davicom DM9009 Network Drivers

The A does not exhibit this problem. All Davicom DM9009 modes on the A seem to work correctly.

Consequently, autonegotiation is not currently supported for this chipset: The dc driver programs 82c and 82c PNIC chips to use the store and forward setting for the Davicom DM9009 start threshold by default. The 82c and 82c PNIC chips also have a receiver bug that sometimes manifests during periods of heavy receive and transmit Davicom DM9009, where the chip will improperly DMA received frames to the host. 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 Fast Ethernet driver eCSoft/2

The dc driver detects this condition and will salvage the frame; however, it incurs a serious performance penalty in the process. The PNIC chips also sometimes generate a transmit underrun error when the driver attempts to download the Davicom DM9009 filter setup frame, which can result in the receive filter being incorrectly programmed.


The dc driver will watch for this condition and requeue the setup frame until it is transferred successfully. This workaround has a negligible impact on transmit performance. Options Davicom DM9009 The copyright notice of this manual page is here plain text.

Please direct any comments about this manual page service to Ben Bullock. Privacy policy.

To compile this driver into the kernel, place the following lines in your kernel configuration file: The dc driver provides support for the following chipsets: On sparc64 the dc driver respects the local-mac-address? The Macronix application notes claim that in order Davicom DM9009 put the chips Davicom DM9009 normal operation, the driver must write a certain magic number into the CSR16 register.

The numbers are documented in the app notes, but the exact meaning of the bits is not. Go to: Enable autoselection of the media type and options.

Davicom Fast Ethernet driver

Set 10Mbps operation. Set Mbps Fast Ethernet operation. Force full duplex operation. These chips are used by many Davicom DM9009 which makes it difficult to provide a complete list of all supported cards.

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The dc driver supports the following media types: The mediaopt option can also be used to enable full-duplex operation. Not specifying full-duplex implies half-duplex mode. The dc driver supports the following media options: The interface will operate in half duplex mode if this media option is not specified. Note that the baseTX media type may not be available on certain Intel adapters which support 10Mbps media attachments only. For more information on configuring this device, see ifconfig 8. This system configuration variable can be set in the Davicom DM9009 Firmware boot monitor using the setenv command or by eeprom 8.


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 Davicom DM9009. TX underrun -- using store and forward mode The device continued to generate transmit underruns even after all possible transmit Davicom DM9009 threshold settings had been tried, so the driver programmed the chip for store and forward mode.

Some operating systems place the controller in low power mode when Davicom DM9009 down, and some PCI BIOSes fail to bring the chip out of this state before configuring it. Part, DM Category, Communication => Network => Ethernet/DS1/E1 (T1/E1) => Controllers.

Description. Company, Davicom Semiconductor Incorporated. for Davicom Fast Ethernet NIC as found, e.g., Davicom DM9009 the SiS motherboard and others; Ver. for DMA, DM, DM and.

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