Do you have one or are you running the DX4 at 5v? This site hosts no abandonware. Another way to look at it is that your networking software never really talks directly to the networking hardware. But the overhead of the parallel port does hurt performance, so while it is a good basic solution it will never beat the performance of an Ethernet adapter on a card. There are lots of factors that go into choosing networking hardware. Other applications were written to use it too.

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Everything I’ve come up says Windows 95, 98,and even XP. A packet driver makes the hardware and network accessible in an easy manner. Here’s a picture of the board with 3cc509 VRM installed, outside of the case. Pioneer SX, fully serviced!

Serial ports supported “hot plugging” removing and connecting devices while running while parallel ports did not, so swapping devices on a parallel port often required shutting the computer and the devices off. Even the slowest DOS machines dating back to the early s can do the following once networked:. Serial ports are relatively easy devices to program and lots of people wrote software that uses the serial port.

A full implementation requires more memory than is usually available on an old PC. This is usually in lieu of transferring the information over a computer network. The growth of DSL and cable modem devices in the early s made home networks almost a requirement, if only to allow sharing the one connection point to the Internet. Here are some notes on the ones that I have tried. Those enhancements were made to improve vos speeds of connected devices, but they would help data transfer of any type.


Networking started to become more popular as businesses obtained multiple computers and they needed a way to communicate. This isn’t the only silver-faced beauty I own, either.

DOS TCP/IP Networking with Packet Drivers

c3509 There are lots of factors that go into choosing networking hardware. A notable exception was LapLink by Traveling Software. For 16 bit ISA bus machines you can use nearly anything. As a result, networking applications generally included code to talk to a few specific models of network adapters directly.

When the packet driver loads it is going to look for the Ethernet adapter and try to communicate with it to ensure that the Ethernet adapter is available. Brutman, mbbrutman at gmail.

More information on mTCP can be found 3c5509 http: So you can use it, but you will have to live with any bugs and limitations. The packet driver for an adapter is effectively the device do for the adapter. Another way to look at it is that your networking software never really talks directly to the networking hardware.

You also need to tell the other software what software interrupt that the packet driver is listening too. Decoupling the network hardware programming from the applications made the applications smaller and less complex while allowing them to handle new adapters with no changes, provided that the new adapters provided a packet driver.


Of course you might have a 3v509 new enough to have PCI slots or an Ethernet adapter on the motherboard. DOS has been an obsolete operating system for close to twenty years but it still shows up in a few places:.

And although DOS came a little bit before the era of widespread networking on home ds, there was enough overlap such that reasonably good networking software exists for DOS. That hardware might be a network adapter, an Ethernet chipset connected through the parallel port, or even just a plain serial port.

A “software service” for sending and receiving raw Ethernet packets is in place, courtesy of the packet driver. Here are some examples:.

3Com 3c – Wikipedia

The 32 bit versions compile under a variety of C compilers. Some 16 bit cards might be able to function in an 8 bit slot, but you will have to experiment with that. It will run with a NEC V20 and it might be possible to recompile it to get rid of the specific instructions.

All of the code is 16 bit and most of the programs will run on a K system using DOS 2.