You can compile with a memory model other than compact as long as you preserve the far pointers. This page was last modified on 28 December , at Navigation menu Personal tools Log in. Navigation Main page Recent changes Random page Help. Creating the packets to send down the wire in memory isn’t difficult – it requires a lot of data structures and pointers but it is well within the grasp of a good C programmer. We will learn more about these kernels a bit further in this wiki.
|Date Added:||26 February 2005|
|File Size:||21.38 Mb|
|Operating Systems:||Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X|
|Price:||Free* [*Free Regsitration Required]|
Interfacing to the hardware is a problem though – most of us are not trained to write device drivers, it is a difficult environment to debug in, and there are a lot of possible Ethernet cards out there.
It also includes some buffer management code that is used for receiving incoming data from the packet driver.
Network Setup – DOSBoxWiki
The first option ” 0x60 ” sets the software interrupt vector used by the driver. He made the experience that packet drivers are often the same for a large number of models by the same manufacturer, so he recommends not to try finding a packet driver specific for your model number.
If there is no such driver on your installation medium or you don’t have any, try searching the web. Another example for the E card: Russell knew what it was right away when I said Xircom. Obviously there is a lot of code to add if you want this to do something useful, but it will get you started. We will learn more about these kernels a bit further in this wiki.
In the example above the driver is loaded into high memory by using the command crnywr LH “. After that, I was able to send and receive packets with impunity! This bridge had been crossed many years ago.
Luckily there was a solution for these problems – the packet driver specification. Navigation Main page Recent changes Random packett Help. The packet driver API is based on software interrupts which allow it to be used from almost any programming language that can generate an interrupt.
Views Read View source View history. The first place to look for a packet ceynwr should be the installation medium that came with your card. It is also expected that you have the packet driver specification handy and are familiar with it.
Software interrupts are not extremely difficult to use, but they are certainly more work than a normal function call.
Where to find lacket The first place to look for a packet driver should be the installation medium that came with your card. After a few days of debugging and some consultation with Russell Nelson at Crynwr I was able to get around the problem. Retrieved from ” http: I had a breakthrough when I figured out that the Xircom Pakcet I was using would always fail when I received a packet, but an NE clone would let me receive a packet just fine without crashing first. Navigation menu Personal tools Log in.
PC/TCP Packet Driver – Wikipedia
It also includes the assembler code that I used to work around ‘The Xircom Problem. This page has been accessed 44, times. My first attempts at sending packets were successful – my Linux box on the network saw my hideous first attempts at ARP.
Documentation is in the form of comments interspersed in the code. Reboot boot messages packet driver That’s all. This page was last modified on 28 Decemberat Creating the packets to send down packdt wire in memory isn’t difficult – it requires a lot of data structures and pointers but it is well within the grasp of a good C programmer.
As you can see in the figure above frynwr the dark grey fieldsit is also possible to run Novell NetWare over of a packet driver: You can compile with a memory model other than compact as long as you preserve the far pointers.
But trying to receive packets was a nightmare – if I received a packet the machine would immediately crash. If this gets anybody interested in DOS networking and saves them from the pain and frustration I went through, it will be worth it. Some research and digging led me to the interrupt keyword in the compiler.