virtex7_pcie_dma

modelsim快速入门教程，附带文中范例源代码。-ModelSim Quick Start Guide, incidental text in an example of source code.

MODELSIM的实验程序，在QUARTUSii中调用MODELSIM，实现仿真-ModelSim Experimental procedures QUARTUSii call MODELSIM, realize Simulation

说明：  PicoRV32 is a CPU core that implements the RISC-V RV32IMC Instruction Set. It can be configured as RV32E, RV32I, RV32IC, RV32IM, or RV32IMC core, and optionally contains a built-in interrupt controller. Tools (gcc, binutils, etc..) can be obtained via the RISC-V Website. The examples bundled with PicoRV32 expect various RV32 toolchains to be installed in /opt/riscv32i[m][c]. See the build instructions below for details.

用汇编语言设计的频率计，注释较详细，适于初学者学习使用(Assembly language design frequency meter, the comment in more detail, suitable for beginners to learn to use)

关于语音通信信道调制的程序代码，是论文的仿真程序(About voice communication channel modulation code, the authors of the paper simulation program)

由VHDL 语言实现的数控分频 利用的是QUARTUES环境已经得到验证-By the NC VHDL language is the use of sub-frequency QUARTUES environment has been tested

2位并行加法器初学者必看初步了解FPGA-two count

用VHDL语言来实现一个电子时钟，可以调时间。小时，分，秒。可以下载到实验箱来运行验证。-use VHDL to achieve an electronic clock, the time can be set aside. Hours, minutes and seconds. Experiments can be downloaded to the box to run test.

说明：  vivado的license ,可以用在2019.1,2019.2,在win10 64bit上已检验过.(It can used in vivado2019.1,2019.2)

控制路线和街道交叉口的简单程序，路线优先，街道上有车辆检测器；