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    <ol> <li><p>Something with support for Ethernet and an available network stack would seem sensible. Are you looking for an off-the-shelf board or developing your own? Many ARM microcontrollers include on-chip Ethernet controllers. You need to consider support for the networking hardware and whether such support (or indeed the application itself) requires an OS or RTOS.</p></li> <li><p>C compilers are ubiquitous for nearly all architectures from 8 to 64bit. However if you use a 32bit part with more than a few tens of Kbytes of RAM, C++ is viable and almost as ubiquitous. Ada is a rarer less well supported beast, and outside of military/aerospace would be an unusual choice IMO. You may need third-party support such as a network stack and Ethernet drivers - are those going to be available for Ada; at reasonable cost?</p></li> <li><p>You may not need to simulate the hardware at the instruction or cycle level. If using C or C++ you can prototype much of the code on a PC. The advantage being that PC already have network support. Many embedded development tool-chains include instruction simulators, some also simulate on-chip peripherals, but their use is limited - they do not execute in real-time, and simulating external I/O can be complex and impractical.</p></li> </ol> <p>**[edit]**Regarding C++ (an in response to Jason S's comment). It is not that C++ necessarily needs more memory; you pay for the features you use. However care needs to be taken since things that C++ makes easy and attractive can have hidden resource costs. I use C++ in embedded systems, but seldom for example use the C++ standard library - it is great and saves a lot of time, but at a high cost in terms of resource and determinism that some systems may not afford. I have successfully used C++ on 8 and 16 bit systems, but the advantages are not so critical when the subset used is highly constrained, and the code body small. I would not for example suggest that you learn C++ just to use it on an 8bit system; but if you already know C++, go ahead (with care). I am currently working on a dsPICF33 device, and the lack of C++ support is very frustrating.</p>
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    1. POI have an embedded project idea that i want to start. I have many questions
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    1. COC++'s viability has nothing to do with 32-bit parts or tens of K of RAM. It's a myth. If you program with dynamically-allocated memory and complicated constructors and virtual functions + such, you'll need more RAM. But the basics are just fine, and a good compiler will optimize. C++ helps with encapsulation + modularization and I wish more embedded processor manufacturers would make sure they offer a C++ compiler.
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    2. COAgreed; with C++ you pay for what you use - I certainly did not intend to propagate the 'myth'. However, if constraints are tight what you might use may make it less compelling if you need to get up-to-speed with C++ at the same time. As Stroustrup said: "In C++ it's harder to shoot yourself in the foot, but when you do, you blow off your whole leg". Moreover on 32bit platforms there are mature and solid C++ compilers available (GCC for example is widely ubiquitous); on smaller targets quality and compliance can be more variable.
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