NetBSD is a source-to-source system.

How to get NetBSD

NetBSD is a Open Source operating system, and as such it is freely available for download from FTP. Netbsd.org and its mirrors.

There is no "official" supplier of NetBSD CD-ROMs and there is various resellers. You can find the most up to date list on the relevant page on the NetBSD site.

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Me translation
How to get NetBSD
NetBSD is an open source to the source of the system, can be from the official FTP site ftp.netbsd.org/can also go to his mirror www.netbsd.org/mirrors/under the site.
Http://www.netbsd.org/sites/cdroms.html There are a lot of unofficial CDs here, and this is the latest list.

NetBSD, looking at its profile, fits very well with embedded porting.

Why not Linux?

Linux is already very extensive, with Google's accession, especially the Android source code has been added to the kernel, which makes Linux unstable, often change updates, and so on. I'm going to find a more stable system. NetBSD, good choice.

Extremely wide range of hardware support

What attracts me most is Tim McIntire's description on Developerworks.

You can port NetBSD to almost any computer with a processor, so there's the maxim that "it can run on NetBSD". NetBSD supports more than 50 platforms, from legacy 68K and millions per second (MIPS) systems, to the latest x86_64 processors from Advanced Micro Devices, Inc. (AMD) and Intel. And perhaps more importantly, the NetBSD has been ported to make it available for a wide variety of embedded systems.  

License

I need such a system that can serve a wider range of hardware. In addition it is a license,

When an organization chooses NetBSD (or other BSD variants) instead of Linux for its commercial products, BSD licensing is a very important factor in the company's decision-making process. The distribution of the Linux kernel and most Linux software complies with the general Public License (GPL), which requires the release of all modified source code. In contrast, the BSD license allows companies to modify and sell NetBSD code without having to issue modified source code, allowing companies to maximize the protection of their intellectual property when using open source software as their product base.

in recent years, a large number of companies have been sued for inappropriate use of GPL software. The choice of software that complies with BSD licensing provides greater operational space for commercial products, another reason NetBSD is suitable for embedded systems. For example, if company A intends to use NetBSD in a new smart phone that runs Intel XScale technology, the company can add kernel support for Evolution-data Optimized (ev-do) devices. Under the BSD license, the company can retain ownership of its code, so company B will not be able to use the same code in its new phone. If company A decides to use the Linux kernel, then under the GPL, they must publish the source code for any modifications made to the kernel .

There is no worries about the future of commercial applications, perhaps I think too early, and now not qualified to say this, because it has not been used. But I'm going to use it for development.

What to do

1 First I will install on the VBox, and in the daily work slowly replace linux--suse, to familiar with NetBSD, write some feelings, perhaps someone will be interested, to discuss.
2 in the s3c2420 Development Board transplant, I put the error posted, if can solve, directly affixed to, can not solve, look forward to master.
3 NetBSD's Handbook is very good, but it still feels inadequate. PHP manual I feel very good, not only the Official handbook, but also under the Official Handbook has a very good discussion, a lot of the essence of the reference Ah, speculation is collated. Because it is not the spit groove, but the technical discussion, good AH.
I was ready to knock down their manuals and "thread" the results.

Reference:

http://www.ibm.com/developerworks/cn/aix/library/au-netbsd.html
NetBSD Handbook of English: http://www2.tw.netbsd.org/docs/guide/en/index.html
NetBSD Handbook for Chinese: http://residence.educities.edu.tw/rxghome/netbsd/guide-gb/netbsd.html version based on 2001, too old
Official website: http://www.netbsd.org/

NetBSD is a source-to-source system.