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1. 大量的嵌入式技术文档，非常好,分类清晰
http://www.embeddedstar.com/technicalpapers/category/ - 外文
2. A free RTOS for any embedded device
http://www.edn.com/article/CA240905.html - 外文
3. ecos 开发资源
http://www.ecoscentric.com/resources.shtml - 外文
4. RedBoot
RedBoot is a complete bootstrap environment for embedded systems. Based on the eCos Hardware Abstraction Layer, RedBoot inherits the eCos qualities of reliability, compactness, configurability, and portability.
http://ecos.sourceware.org/redboot/ - 外文
5. is a C library, for eCos
ftp://ecos.sourceware.org/pub/ecos/ - 外文