流水线的 FFT/IFFT 64 点处理器

r80515源代码，包含说明文档。FPGA验证通过(r80515 source code, including documentation. Verified by FPGA)

说明：  使用STM32官方提供的DSP库进行FFT，虽然在使用上有些不灵活（因为它是基4的FFT，所以FFT的点数必须是4^n），但其执行效率确实非常高效，看图1所示的FFT运算效率测试数据便可见一斑。该数据来自STM32 DSP库使用文档(. Using the official DSP library provided by STM32 for FFT is not flexible in use (because it is the FFT of base 4, so the number of FFT points must be 4 ^ n), but its execution efficiency is really very efficient, as can be seen from the test data of FFT operation efficiency shown in Figure 1. This data comes from STM32 DSP library usage document)

基于vhdl编写的贪吃蛇游戏，课程设计必备(Based on the VHDL language of the snake game, curriculum design essential)

FPGA驱动高输入电压范围的ADS8509芯片，采样范围广，适合前端大信号处理(FPGA drive a high input voltage range ADS8509 chip, sampling a wide range, suitable for large front-end signal processing)

说明：  FIFO: First in, First out 代表先进的数据先出，后进的数据后出。Xilinx 在 VIVADO 里为我们已经提供了 FIFO 的 IP 核, 我们只需通过 IP 核例化一个 FIFO，根据 FIFO 的读写时序来写入和读取FIFO 中存储的数据。(FIFO: first in, first out represents the first out of advanced data, and the last in data is the last out. Xilinx has provided us with the IP core of FIFO in vivado. We only need to instantiate a FIFO through the IP core, and write and read the data stored in FIFO according to the FIFO read-write timing.)

Parallel to Serial converter Module

Due to its high modularity and carry-free addition, a redundant binary (RB) representation can be used when designing high performance multipliers. The conventional RB multiplier requires an additional RB partial product (RBPP) row, because an error-correcting word (ECW) is generated by both the radix-4 Modified Booth encoding (MBE) and the RB encoding. This incurs in an additional RBPP accumulation stage for the MBE multiplier. In this paper, a new RB modified partial product generator (RBMPPG) is proposed; it removes the extra ECW and hence, it saves one RBPP accumulation stage.

本资料是基于FPGA的AD_DA数据采集系统。所用AD是ADC081S，DA是DAC5311。通过查阅相关的AD_DA时序图，得出驱动程序。这对要写时序的初学者有很大的帮助。

FPGA简单VGA彩条显示程序驱动程序640*480(FPGA simple VGA color display Driver 640* 480)

master spi的源代码（verilog），包括文档，测试程序(master spi the source code (verilog), including documentation, testing procedures)