这是一个基于VHDL语言编程的电子琴源代码程序，希望可以帮到大家...

说明：  实现对LCD1602的Verilog HDL编程(the program for LCD1602 based on Verilog HDL)

说明：  sd_sdram_lcd 是读取SD卡中的数据，然后通过LCD显示(It is to read the data in SD card and display it by LCD)

这是源代码，该代码为三角波的一代，在 VHDL 写。欢迎下载。谢谢你的支持。

FPGA上的一个半加器实例程序，通过测试，可以直接运行在fpga开发板上。(One and a half adder example on FPGA program, through the test, can be run directly on the FPGA development board)

The code is used to interface PC monitor with Spartan 3E for the display. if you run the program on spartan 3 you would be able to see different test pattern on the monitor screen

xilinx FPGA设计需要的DDR2文件，可以应用于实际设计中(xilinx FPGA design needs DDR2 files that can be applied to the actual design)

This an interpolating by 2 half-band filter with 79 taps (40 none-zero coefficients).

SPI串口的内核实现（vhdl）,可以用qII等软件直接加到FPGA或者CPLD里面.-the SPI Serial Kernel (vhdl) can be used directly qII software foisted CPLD or FPGA inside.

Xilinx FPGA reset usage

DE2-115开发板LED显示测试源码，对fpga开发者提供参考(DE2-115 development board LED display test source, provide a reference for fpga developer)