Once initialization has completed, you can finally start the card. It will automatically install drivers and says to restart the os. During normal initialization and use of the cards, the CSRs are used exclusively. Your advice helped alot. You should also have a variable that stores the current ‘pointer’ into each buffer i. I then tried once more adding the AMD PCnet adapter but pointing the “Have Disk” path to the above path – and bingo – it took it, and on reboot the device was there and started and working. You don’t have JavaScript enabled.

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Once initialization has completed, you can finally start the card. I was hoping that installing vmtools would automatically create the virtual PCnet ethernet adapter. The card uses two ring buffers to store packets: Do not be deterred! We will flesh out the interrupt handler later, but you should install the interrupt handler here as otherwise you will get crashes due to unhandled interrupts. Depending on your design this may be preferable. 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.


You need to parse ACPI tables etc. Also I’m curious – on Win2K, where does vmtools get the adapter driver from?


You don’t have JavaScript enabled. If this is cleared, it means the driver ‘owns’ that particular ring buffer entry. Your way works perfect for me on three Windows NT 4. Views Read View source View history. You also need to specify the physical address MAC address you want the card to use. MODE provides various functions to control how the card works with regards to sending and receiving packets, and running loopback tests.

If it is set, it means the card owns it and the driver should not touch the entire entry. If networking was disabled at the time you installed Windows NT, you can enable it after installing the wmd system. I tried this using two different sources for the adapter driver, and re-installing vmtools with “repair” option after each one, and neither worked:.

Given that the MMIO access is sometimes absent on emulators or certain systems, this article will focus on the IO port access. Note that interrupts can come from many sources other adaptef new packets. If a new packet has been signalled then CSR0 bit 10 will be set. It has built-in support for CRC checks and can automatically pad short packets to the minimum Ethernet length.


Virtual networking

Go to original post. I have an old Windows NT4 partition that I wanted to set up as a virtual machine. You can not post a blank message.

This article will focus on asapter Am79CA a.

I see this problem mentioned in one of the vmware docs: And you may want to set bit 11 of CSR4 which automatically pads Ethernet packets which are too short to be at least 64 bytes.

Each of these then contains a pointer to the actual physical address of the memory used for the packet. Or is there pcjet other ethernet adapater that I could get working in a virtual WinNT4?

It will automatically install drivers and says to restart the os. The next section will enable some interrupts on the card. Works for me too!! I too will need to manually install the driver from AMD’s site.

You can do this by either waiting for an interrupt if you didn’t disable the initialization done interrupt adpter CSR3 or by polling until CSR0 bit 8 is set.

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