很好的quartus软件仿真教程，flash版。

Fixed-point base-2 logarithm (DW_log2) // Computes the base-2 logarithm of a fixed point value in the // range [1,2).

任意数据发生器的源代码-arbitrary data source code generator

利用VHDL实现CPLD（EPM240T100C5）的串口发送程序-Using VHDL realize CPLD (EPM240T100C5) Serial sending procedures

本代码介绍了使用VHDL开发FPGA的一般流程，最终采用了一种基于FPGA的数字频率的实现方法。该设计采用硬件描述语言VHDL，在软件开发平台ISE上完成，可以在较高速时钟频率（100MHz）下正常工作。该设计的频率计能准确的测量频率在1Hz到100MHz之间的信号。使用ModelSim仿真软件对VHDL程序做了仿真，并完成了综合布局布线，最终下载到芯片Spartan-II上取得良好测试效果。-the code on the FPGA using VHDL development of the general process, finally adopted a FPGA-based digital frequency method. The design using VHDL hardware description language, the software development platform ISE completed, the higher speed clock frequency (100MHz) under normal work. The design of the frequency meter can be accurately measured in a frequency of 100MHz between Hz signal. Use ModelSim VHDL simulation software to do the simulation process, and completed a comprehensive layout cabling, downloaded to the final chip Spartan-II made good on the test results.

Implementarea unui comparator pe 1 bit

说明：  基于FPGA的VGA驱动代码VHDL 在显示屏显示一个汉字(FPGA-based VHDL code of the VGA driver that a character in the display)

BCD to 7 segments display decoder

用VHDL实现十六位移位乘法器 才有移位相加法来实现-Use VHDL to achieve 16-bit shift multiplier shift only the sum of law to achieve

用verilog 语言实现七人投票表决器(verilog seven voting)

8位相等比较器，比较8位数是否相等 -- 8-bit Identity Comparator -- uses 1993 std VHDL -- download from www.pld.com.cn & www.fpga.com.cn-eight other phase comparators, Comparing the same whether the median 8-- 8-bit Identity Comparator-- uses 1993 std VHDL-- download from www.pld.com.cn