Navigation Main page Recent changes Random page Help. This page has been accessed 44, times. Where to find them The first place to look for a packet driver should be the installation medium that came with your card. As you can see in the figure above in the dark grey fields , it is also possible to run Novell NetWare over of a packet driver: In the example above the driver is loaded into high memory by using the command ” LH “. COM 0x60 5 0x In the example above the driver is loaded into high memory by using the command ” LH “. After that, I was able to send and receive packets with impunity!
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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. But trying to receive packets was a nightmare – if I packe a packet the machine would immediately crash.
If there is no such driver on your installation medium or you don’t have any, try searching the web. If this gets anybody interested in DOS networking and saves them from the pain and frustration I went through, it will be worth it. My first attempts at sending packets were successful – my Linux box on the network saw my hideous first attempts at ARP.
The first option ” 0x60 ” sets the software interrupt vector used by the driver. The first problem that I ran into was figuring out how to actually send and receive bytes using an Ethernet card. The buffer management code is fairly high performance code.
The first place to ceynwr for a packet driver should be the installation medium that came with your card. We will learn more about these kernels a bit further in this wiki. After that, I was able to send and receive packets with cryjwr Obviously there is a lot of code to add if you want this to do something useful, but it will get you started.
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. Navigation menu Personal tools Log in. Navigation Main page Recent padket Random page Help. It is also expected that you have the packet driver specification handy and are familiar with it.
Networking FreeDOS – Packet driver installation – FreeDOS
This page has been accessed 44, times. The packet driver specification creates a high level programming interface for Ethernet cards that allows one to ignore the low level details of the cards and program the various cards using a relatively simple set of calls.
Retrieved from ” http: Where to find them The first place to look for a packet driver should be the installation medium that came with your card. The details on the packet driver spec can be found here: Reboot boot messages packet driver That’s all.
Crynwr – FreeDOS
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. If you port to another compiler please drop me a line and let me know how it went. COM 0x60 5 0x In the example above the driver is loaded into high memory by using the command vrynwr LH “. This is because we are using ‘far’ pointers. Still, not everything was perfect.
Packrt had a breakthrough when I figured out that the Xircom PEBT I was using would always fail when I received a packet, but an NE clone would let me receive a apcket just fine without crashing first. Luckily there was a solution for these problems – the packet driver specification.
Some research and digging led me to the interrupt keyword in the compiler. Most packet drivers can be unloaded after use with the option ” -u “.
PC/TCP Packet Driver
Some drivers only need the vector and find the other values by themselves. It also includes some buffer management code that is used for receiving incoming data from the packet driver. Views Read Packef source View history.
You can compile with a memory model other than compact as long as you preserve the far pointers. This bridge had been crossed many years ago. The most frequently used packet driver software interrupt number is 0x