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1. OPENCORES.ORG
这里提供非常多，非常好的PLD了内核，8051内核就可以在里面找到。
进入后，选择project或者由http//www.opencores.org/browse.cgi/by_category进入。
对于想了解这个行业动态人可以看看它的投票调查。
http://www.opencores.org/polls.cgi/list

OpenCores is a loose collection of people who are interested in developing hardware, with a similar ethos to the free software movement. Currently the emphasis is on digital modules called 'cores', since FPGAs have reduced the incremental cost of a core to approximately zero. Activity is centered around the opencores web site
http://www.opencores.org - 中文
2. FPGAs are fun
提供了大量的关于FPGA应用的文章，项目实际例子。强烈推荐
http://www.fpga4fun.com/ - 外文
3. Open Collector
收集了大量的开源硬件，内核.它的分类非常清晰，不多说。
强烈推荐
目录结构
# Design tools and software

* Digital
o Data Entry
o Simulation
+ General
+ Spice or alternatives
+ Verilog
+ VHDL
o Verification
o Synthesis
+ ASIC
+ FPGA
+ Logic Minimization
+ PCB Design
o Educational
* Other

# Hardware designs

* Design Libraries
* Computers
* Embedded Systems
* Processors
* Interface
* Control
* Robotics
* Audio
* Video
* DSP
* Radio
* Telecoms
* Other

# Groups and Organizations
http://opencollector.org/summary.php - 外文
4. EDA Industry Working Groups
好像是官方网站,大量的相关资料与链接.
http://www.vhdl.org/ - 外文
5. 可编程逻辑器件 - Programable Logic Device
一个专门的关于可编程逻辑器件 - Programable Logic Device ( FPGA & CPLD )的网站,里面的资料比较全。里面有几个非常好的栏目:参考设计,应用文章,设计进阶。
http://www.pld.com.cn/ - 中文
6. 可编程逻辑器件 - Programable Logic Device
一个专门的关于可编程逻辑器件 - Programable Logic Device ( FPGA & CPLD )的网站,里面的资料比较全。里面有几个非常好的栏目:参考设计,应用文章,设计进阶。这里的BBS论坛人气也比较旺
http://www.pld.com.cn/bbs/index.asp - 中文
7. www.fpga-faq.org
收集了大量的faq.对一些概论性的东西作了很好的解说。
初学者必去。
http://www.fpga-faq.org/ - 外文
8. Via Dev-page
提供许多非常新的开发项目，而且提供详细的有关资料。
ultrasonic sensor-based radar
Simple power supply
PIC-based alarm clock
Nissan Maxima Consult Interface
Mfr. libraries for Protel
Sony IRCS remote control FPGA IP core
testing proj.
Cheap logic analyzer, PIC based
PIC-based IDE
Custom Protel libraries
Sobel edge detector FPGA IP Core - EE project
Trivial high-voltage programmer for PIC
FPGA-based MAC and PHY
FTDI USB - RS 232 converter
MP3 Server front-end for linux server, PIC based
文档下载:http://via.dynalias.org/hw/
http://via.dynalias.org/ - 外文
9. Design And Reuse
The Web's System-On-Chip Design Resource - IP, Core, System-On-Chip
http://www.us.design-reuse.com/ - 外文
10. FPGA-Guide
This WEB-page is dedicated to all PLD / FPGA-designers
to find the best solution for their project
http://www.fpga-guide.com/ - 外文
11. SOCcentral
SOCcentral brings you the latest news about SOC/ASIC/FPGA design, EDA tools and design methodologies, intellectual property (IP), and design reuse. You'll also find the abstracts (and links) to more than 1600 relevant magazine and newspaper articles, tutorials, whitepapers, and application notes available on line, as well as the most comprehensive directory of EDA/design service/IP providers available anywhere on the Internet.
http://www.soccentral.com/ - 外文
12. EDACafe, the Leading EDA Portal
http://www.edacafe.com/ - 外文
13. 许多关于DSP的信息，强烈推荐。
http://www.linux-sound.org/dsp.html - 外文
14. WORLD OF ASIC
http://www.asic-world.com/ - 外文
15. Accellera的主页
一个收集了非常多的关于HDL标准的网站。
Accellera's mission is to drive worldwide development and use of standards required by systems, semiconductor and design tools companies, which enhance a language-based design automation process. Its Board of Directors guides all the operations and activities of the organization and is comprised of representatives from ASIC manufacturers, systems companies and design tool vendors.
http://www.accellera.org/activities/ - 外文
16. www.fpga4fun.com
[url]www.fpga4fun.com[/url]网站收集的链接,非常实用。特色就是它把verilog与VHDL相关的链接作了分类汇总。
http://www.fpga4fun.com/links.html - 外文
17. FPGA CPU News
收集了大量的关于FPGA,CPU的新闻，可以了解它们的发展动态。可惜很久很久没有更新了。
http://www.fpgacpu.org/ - 中文
18. DA开发技术网
Altera FPGA开发板,Altera CPLD开发板,Xilinx FPGA开发板, Xilinx CPLD开发板,cyclone开发板,cyclone2开发板,Spartan2开发板,Spartan3开发板,Mars-EDA
http://www.eda.org.cn/ - 中文