在 FPGA 中实现 SPI 接口

基于VHDL语言的循环码编码器的程序，以一个（15，6）循环码为例-VHDL language based on the cycle of the program code encoder to a (15,6) cyclic code as an example

DDS的VHDL程序，相当好，值得下载，共享才是王道(DDS, VHDL program is quite good, worth downloading, sharing is king)

使用FPGA测量频率大小，并且在数码管上进行显示(Frequency measurement using FPGA and display on digital tube)

用verilog实现的buffer，经过了fpga平台验证。(Implement buffer with verilog.)

-- Moore State Machine with explicit state encoding -- dowload from: www.fpga.com.cn & www.pld.com.cn--- Moore State Machine with explicit state encoding-- dowload from : www.fpga.com.cn

基于FPGA芯片，在Nios II IDE软件的开发环境下写的NIos II 软核uart源代码！-Based on FPGA chip, the Nios II IDE software development environment written in NIos II soft-core uart source code!

一个模拟ISA界面的简易小程式，简单易懂-ISA interface, a simple simulation of a small program, easy-to-read

Simulation and Synthesis Techniques for Asynchronous FIFO Design

FPGA上的VERILOG语言编程。通过查找表实现直接数字频率合成。在主控部分通过键盘选择正弦波，方波，三角波，斜波，以及四种波形的任意两种的叠加，以及四种波形的叠加；通过控制频率控制字C的大小，以控制输出波形频率，实现1Hz的微调；通过地址变换实现波形相位256级可调；通过DAC0832使波形幅值256级可调；通过FPGA内部RAM实现波形存储回放；并实现了每秒100HZ扫频。(FPGA on the verilog language programming. Lookup table through direct digital frequency synthesis. In part through the control of the keyboard to choose sine, square, triangle wave, sloping wave, and four arbitrary waveform two superposed and the stack of four waveform; by controlling the frequency control word on the size, in order to control the output waveform frequency, 1 Hz to achieve the fine-tuning; Address transform through waveform phase adjustable 256; DAC0832 so through waveform amplitude adjustable 256; FPGA through internal RAM to the waveform storage intervals; and achieve a 100 per second sweep 9999.)

全加器的vhdl程序及其仿真图像.by利用它可以方便、准确地得到输出