There are other bits in CSR0 than can be set depending on how you set up interrupt masks in CSR3 and additionally other bits in CSR4 that can signal interrupts although these are usually masked out on reset. This page was last edited on 17 April , at The workaround is to ignore packets with an invalid destination address garbage will usually not match. Note that if you want to wait for an interrupt you will also need to set bit 6 of CSR0 or interrupts won’t be generated you will need to enable this anyway to get notification of received packets, so it makes sense to set it at the same time as the initialization bit. This means you should be able use the original bit software on these members of the PCnet family of single-chip Ethernet controllers. Contents 1 Overview 2 Initialization and Register Access 2.
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Note that interrupts can come from many sources other than new packets. The initial Windows installation zipped right through, however, when I went to configure the network adapter none was listed.
C chips have a bug which causes garbage to be inserted in front of the received packet. Once initialization has completed, you can finally start the card.
Oh very luck i found you guys its frustrating when cant install the AMD driver. Will poll computer memory every 1.
Retrieved from ” https: In other languages Deutsch. So, your solution has been very useful for me.
Views Read View source View history. Of course, this precludes multicast support.
AMD PCnet-PCI II Ethernet Adapter (AM79CA)
Each of these then contains a pointer to the actual physical address of the memory used for the packet. LADR is the logical address filter you want the card to use when deciding to accept Ethernet packets with logical addressing. At initialization, you would want the card to ‘own’ all the receive buffers so it can write new packets into them that it receives, then flip ownership to the driverand the driver to ‘own’ all the transmit buffers so it can write packets to be transmitted, then flip ownership to the driver.
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After you have properly handled an interrupt, you will need to write a 1 back to the appropriate bit in CSR0 or CSR4 before sending EOI to you interrupt controller or the interrupt will continue to be signalled. We simply fail and return. On a side note I was doing this remotely, and found out that in order to use the Remote Console Client, I needed to allow ports and through the firewall. Thank you very much for sharing your solution! If you do not wish to use logical addressing the defaultthen set these bytes to zero.
This means that the index of the register you wish to access is first written to an index port, followed by either writing a new value to or reading the old value from a data register. Finally, once all our ring buffers are set up, we need to give their addresses to the card.
You probably want to set it to zero enable transmit and receive functionality, receive broadcast packets and those sent this physical address, disable promiscuous mode.
AMD Lance Am7990
You also need a simple way of incrementing the pointer and wrapping back to the start if necessary. And this chip bug might be the reason. Well this worked a treat, Thanks, now i have pchet same problem with driver for Multimedia Audio control with in Vmware, any ideas?
Receive descriptor zero byte count buffer interpreted as available bytes.
AMD PCNet PCI II (Am79CA) | Geek University
Your email address will not be published. Note that if you want to wait for an interrupt you will also need to set bit 6 of CSR0 or interrupts won’t be generated you will need to enable this anyway to get notification of received packets, so it makes sense to set it at the same time as the initialization bit. Retrieved from ” https: This means you should be able use the original bit software on these members of the PCnet family of single-chip Ethernet controllers.
This article will focus on the Am79CA a. If it is set, it means the card owns it and the driver should not touch the entire entry. To actually set up the card registers, we provide it with the address of our initialization structure by writing the low bits of its address to CSR1 and the high bits to CSR2.
See the spec description of CSR15 for further details. Leave a Reply Cancel reply Your email address will not be published.