vhdl code for counterand detemines how counter works

基于Verilog HDL的SDRAM控制器。 实验条件： 工具：Quartus II 6.0 ,SignalTap II FPGA：Altera Cyclone EP1C12Q240C8N SDRAM：HY57V283220T-6(SDRAM controller based on Verilog HDL. Experimental conditions: Tools: Quartus II 6.0, SignalTap II FPGA: Altera Cyclone EP1C12Q240C8N SDRAM: HY57V283220T-6)

基于FPGA的成型滤波器的代码，里面内附激励文件，使用verilog编写(FPGA-based shaping filter code, which included incentives files using verilog write)

软件开发环境：ISE 7.1i 仿真环境：ModelSim SE 6.0 1. 多功能数字钟(Software development environment: ISE 7.1i simulation environment: ModelSim SE 6.0 1. Multi-function digital clock)

verilog写的39阶通带为20KHz的半带fir滤波器，经测试正确。(verilog halfband FIR)

多个VHDL编码的例题，详细的电路图介绍，还有流程图-many examples of VHDL code, the particular introduction of circuit diagram and flow chart

用VHDL编写的关于SCAN的一个小程序，希望大家看了后能喜欢，也可以学学哟！-VHDL SCAN prepared on a small procedures in the hope that after reading them you will like and can learn yo!

本代码仿真了WCDMA小区搜索。cell_search_cpich scramble wcdmasource(This code emulation WCDMA cell search. cell_search_cpich scramble wcdmasource)

说明：  利用FPGA实现对外设按键的控制，例如用户库用按键控制跑马灯的效果(FPGA is used to realize the control of external keys, such as the effect of user database using keys to control the running horse lamp)

矩阵键盘扫描和led显示 这样子可以得到要输入的键码，并通过led显示出来(KEYBOARD AND DISPLAY LED)

《Verilog HDL 程序设计教程》6-"Verilog HDL Design Guide" 6