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Not to steal this thread, but I wondered about something. ;) Is there no UDP/IP stack available to use in SoPC-builder, free of charge? And if there is no available, implementing this yourself in VHDL/Verilog is a pain in the **s compared to C/C++?
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Steal away - the more the merrier.
In answer to your question / point - probably. Of course if you can pinch a design that has already been done for you then it makes life a lot easier.
What I was trying to get across was that the general point: that you need to decide on your hardware / software split based on the system requirements. The choice of language then comes down to whether you're designing the hardware or the software bit of the system. Designing an algorithm isn't easier or harder in VHDL / verilog or C, but designing hardware in VHDL is a lot easier than C; designing software in C is a lot easier than VHDL.