Microsoft Open Sources .NET Micro Framework

An anonymous reader writes "Back in July, Microsoft announced it was making .NET available under its Community Promise, which in theory allowed free software developers to use the technology without fear of patent lawsuits. Not surprisingly, many free software geeks were unconvinced by the promise (after all, what's a promise compared to an actual open licence?), but now Microsoft has taken things to the next level by releasing the .NET Micro Framework under the Apache 2.0 licence. Yes, you read that correctly: a sizeable chunk of .NET is about to go open source."

Comments

Question for .Net Micro programmers ...

[NullProg]

From the article:

Microsoft isn't opening up the whole stack: the TCP/IP parts are missing because another company wrote that code, and the cryptography libraries are missing because "they are used outside of the scope of the .NET Micro Framework"

Does anyone know how hard it is to write your own .Net classes/wrappers for the missing pieces?
Are there any good .Net references for CLR internals? I know how Java was designed and written, did Anders or Microsoft provide any references for .Net internals outside of the PR fluff pieces on MSDN? How about a decent book.

From a embedded Linux perspective, I find this way more interesting than Mono.

Thanks,