1.
1. EG3
关于嵌入式开发的站点,提供非常多关于嵌入式开发的资料。包括开发公司,技术文档,免费资源等等。版面包括busses & boards,embedded software,dsp,embedded systems,open source,rtos,embedded chips,system-on-a-chip 等等。
强烈推荐

http://www.eg3.com/ - 外文
2. The First Stop for the Latest ICs and Components
非常好的关于微处理器,DSP,可以编程控制器资讯的网站,更新非常快。强烈推荐一些领导级别的人常去,了解行业动态!
http://www.eeproductcenter.com/ - 外文
3. 美国Cornell University课程ECE476所完成的项目。
这些项目都具有详细学习资料。共有200多个项目,看看这些东西,就能感觉国内与国外教学实践的差别。我们国家很多高校的电子相关专业的设计就是搞个键盘,搞个MAX7219显示,搞个DS1302时钟,'一百年不变'。看了它是我记得很不舒服。大家好好研究研究吧。特别是老师们,一定要深思。
一毛

http://instruct1.cit.cornell.edu/courses/ee476/FinalProjects/ - 外文
4. Build Your Own Microcontroller Projects
This page provides schematic and software for hobbyists to practice "learn by doing", build a simple microcontroller projects at home. For those who would like to contribute projects, please prepare HTML files whatever you like to see but keep all files small and informative. I shall provide for others. DIY的好地方,强烈推荐.
http://www.kmitl.ac.th/~kswichit/ - 外文
5. Z80-Family Official Support Page(官方支持网站)
http://www.z80.info/ - 外文
6. zilog-Z80官方网站
http://www.zilog.com/ - 外文
7. Programmers Heaven - Assembler programming zone
大量的源代码,分类清晰,强烈推荐。但是有很多好像已经不再更新了。
http://www.programmersheaven.com/zone5/index.htm - 外文
8. Universal Bootloader
Universal Bootloader project provides firmware with full source code under GPL. Many CPU architectures are supported: PowerPC(MPC5xx, MPC8xx, MPC82xx, MPC7xx, MPC74xx, 4xx), ARM(ARM7, ARM9, StrongARM, Xscale), MIPS(4Kc,5Kc), x86, ...
http://sourceforge.net/projects/u-boot - 外文
9. ZSock - The z88 TCP/IP Stack
http://www.rst38.org.uk/zsock/ - 外文
10. z88dk - The z88 Development Kit C编译工具,开源的
z88dk is a z80 C cross compiler supplied with an assembler/linker and a set of libraries implementing the C standard library for a number of different z80 based machines. The name z88dk originates from the time when the project was founded and targetted only the Cambridge z88 portable.
http://z88dk.sourceforge.net/ - 外文
11. Z80 Assembly Z80汇编指南
http://www.hszk.bme.hu/~pg429/z80guide/ - 外文
12. 中国单片机公共实验室.--可以看看.
http://www.bol-system.com/ - 中文