很多实用的例程，包括触发器，译码器，多路选择器

FPGA加密的方法，对于那些需要加密自己的vhdl源代码的人来说，很有用-FPGA encryption methods for those who need to encrypt their VHDL source code in a way, very useful

VHDL is defined by IEEE Standard 1076, IEEE Standard VHDL Language Reference Manual (the VHDL LRM). The original standard was approved in 1987. IEEE procedures require that standards be periodically reviewed and either reaffirmed or revised. The VHDL standard was revised in 1993, 2000, and 2002. In each revision, new language features were added and some existing features enhanced. The aim in each revision was to improve the language as a tool for design and verification of digital systems. Since the 2002 revision, there have two parallel efforts to further develop the language. The first was the VHDL Procedural Interface (VHPI) Task Force, a subcommittee of the IEEE P1076 Working Group. The VHPI Task Force prepared an interim amendment to the standard, formally approved by IEEE in March 2007. The amendment is titled IEEE 1076c, Standard VHDL Language Reference Manual―Amendment 1: Procedural Language Application Interface.

The objective of the labs today is to give you a basic understanding of FPGA design and enough experience to begin your own FPGA design with the ISE 10.1 tools and the Xilinx Spartan-3A DSP 1800A Starter Kit.

vhdl经典源代码――ps2接口设计，入门者必须掌握-vhdl classical source code-- ps2 interface design, beginners must master

实用的程序代码，希望对大家有用，已经调试通过-Practical program code, in the hope that useful to everybody, has debugging through

说明：  自己写的DES的verilog实现。输入输出实现了并转串。(DES algorithm implemented in verilog.)

多相滤波系统的设计与实现，有MATLAB仿真程序，有sysgen的系统仿真，还有VHDL代码，其中还有FIR的系数参数等等(Polyphase filter system, the design and implementation includes a MATLAB simulation program, sysgen system simulation, and VHDL code, including FIR coefficient parameters, and so on )

read data of type character from flash memory

CORDIC算法的硬件实现 用的verilog语言-CORDIC algorithm Hardware Implementation of the Verilog language

GFHGFHGFH DFHFDHD GHDHFDHHFD DFHFDHDF