四位除法器的VHDL源程序

基于MAX2运用Quartus实现串口通信-MAX2-based use of Quartus Serial Communication

FPGA-based high-speed image acquisition system

这里收录的是《VHDL基础及经典实例开发》一书中12个大型实例的源程序。为方便读者使用，介绍如下： Chapter3：schematic和vhdl文件夹，分别是数字钟设计的原理图文件和VHDL程序； Chapter4：multiplier文件夹，串并乘法器设计程序（提示：先编译程序包）； Chapter5：sci文件夹，串行通信接口设计程序； Chapter6：watchdog文件夹，看门狗设计程序； Chapter7：taxi文件夹，出租车计价器设计程序； Chapter8：elevator文件夹，高层电梯控制器设计程序； Chapter9：cymometer1和cymometer2文件夹，前者是计数测频设计程序，后者是等精度测频设计程序； Chapter10：digital_lock文件夹，数字密码锁设计程序； Chapter11：I2C文件夹，I2C控制器设计程序； Chapter12：fifo文件夹，异步FIFO设计程序； Chapter13：dds文件夹，数字频率合成设计程序； Chapter14：vLA文件夹，虚拟逻辑分析仪设计程序。 -this book includes 12 detail examples of the source program

OFDM完美出图，信噪比，16QAM星座图，加窗信号时域和频域波形图(Perfect figure, OFDM SNR, 16 qam constellation diagram, add window signal time domain and frequency domain waveform figure)

1、ps/2键盘输入，通过led显示ascii码 2、稍等1s可以在lcd上显示输入的字符 3、其中键盘上的backspce键是用来清屏的 4、当lcd上显示满字符时，在按下按键自动清屏，从第一行显示。-1, ps/2 keyboard input, through the led display ascii code 2, wait 1s in the lcd display characters input 3, which backspce keys on the keyboard was required to settle the screen 4, when the lcd display full of characters, the press the button automatically Qing-ping, from the first line of display.

单片机和FPGA的通信程序，发送5个数，传输稳定，可以自行修改可一次传多个数(MCU and FPGA communication program, send five the number of stable transmission, you can modify the number may be more than one pass)

用verilog语言写的简单的键盘扫描代码，适合初学者，用alter的软件编写的程序代码。(Using verilog language to write simple keyboard scan code, suitable for beginners, with alter software program written code.)

代码用两种方法设计了一个基于多相滤波的内插器，低通滤波器采用128阶凯撒窗，内插倍数32，并且给定信号范围，验证了内插器的正确性，画出了内插前后信号的频谱。(The code design the interpolator based on polyphase filter using two methods.The low pass filter is 128 order Caesar window and interpolation multiple is 32.I give the range of the signal to verify the interpolator and plot the spectrum of the signal before and after the interpolator. )

design and implement a digital system on the Altera NIOS board which will read an analogue input using MicroChip’s SPI MCP3202 12-Bit A/D converter. The 8 most significant bits of the converted data will be displayed on two seven segments of the NIOS development board. The sampling frequency is 20kHZ. Use a potentiometer.(design and implement a digital system on the Altera NIOS board which will read an analogue input using MicroChip' s SPI MCP3202 12-Bit A/D converter. The 8 most significant bits of the converted data will be displayed on two seven segments of the NIOS development board . The sampling frequency is 20kHZ. Use a potentiometer.)

说明：  vcs中文使用教程，帮助你快速入门Linux下的VCS操作(VCs Chinese tutorial to help you get started with VCs operation under Linux)