1.
1. 美国一大学学生的VHDL项目,不错
Basic Digital Design Labs in SystemC
Synthesizable VHDL model of the LC-2 processor
Wireless file display device
Lab cams
Super-simple microprocessor
Remote Information Provider
UDP/IP for Embedded Processors
Embedded Building Blocks (not completed)

http://www.cs.ucr.edu/~vahid/sproj/index.html - 外文
2. 一个利用VHDL实现的键盘扫描电路与源代码
http://www.ee.ualberta.ca/~elliott/ee552/studentAppNotes/1999f/Drivers_Ed/keypad.html - 外文