VHDL design entities, the basic structure of the language element of VHDL using...

vhdl

本源码为Nios II的开发示例,主要演示基于Nios II的uCOS的移植。开发环境QuartusII。 本示例十分经典，对基于SOPC开发的FPGA初学者有很大帮助。(The source code for the Nios II development of examples, mainly based on the Nios II shows the uCOS transplant. Development environment QuartusII. This example is very classic, FPGA-based SOPC development of great help for beginners.)

说明：  CPU课程设计要求以FPGA开发平台为例，分析 CPU 设计的流程与仿真。 本次开发使用的硬件描述语言是 Verilog 语言，使用的指令系统是一个以 MIPS 指令集为子集的指令系统，共 22 条指令，所用的设计仿真软件Modelsim。(CPU curriculum design requires FPGA development platform as an example to analyze the process and Simulation of CPU design. The hardware description language used in this development is Verilog language, and the instruction system used is an instruction system with MIPS instruction set as a subset, with 22 instructions in total. The design simulation software Modelsim is used.)

design ram v8051 for project

Xilinx ISE 9.2 and ChinpScope Pro 9.2 Sn

该程序实现的是n位全加器，首先用与非门实现一位全家器，最后实现n位的全加器。-the program is to achieve the n-bit full adder, first using the door with non-realization of a family- and finally realize the full n-bit adder.

说明：  这是本人曾经参与的一个DDR controller接口项目，主要是FPGA rtl实现，仅供参考。(This is a DDR controller interface project that I once participated in, mainly implemented by FPGA RTL, for reference only.)

SDRAM的vegilog代码，做一个SDRAM的封装成为SRAM一样进行操作。一个顶层文件下由三个模块-SDRAM

  设计一个具有较高安全性和较低成本的通用电子密码锁，其具体功能要求如下:  (1) 数码输入：每按下一个数字键：就输入一个数值，并在显示器上的最右方显示出该数值，同时将先前输入的数据依序左移一个数字位臵 (2) 数码清除：按下此键可清除前面所有的输入值，清除成为“0000”。 (3) 密码更改：按下此键时会将目前的数字设定成新的密码。 (4) 激活电锁：按下此键可将密码锁上锁。 (5) 解除电锁：按下此键会检查输入的密码是否正确，密码正确即开锁。

基于FPGA 的VGA波形显示，dds产生三角波正弦波(Vga waveform display based on FPGA, using DDS to generate sinusoidal triangular wave)