一个简单的总线bus代码，初学者可以借鉴学习

说明：  关于计时器 verilog语言，采用arm架构的m3，可以直接应用于soc(About timer verilog language, USES the arm architecture of m3, can be directly applied to soc)

说明：  altera 最新的CYCLONE IV的pci-e核的testbench，VHDL源程序。(altera latest CYCLONE IV of the pci-e core testbench, VHDL source code.)

UART_DMA的方法是使用nios实现UART方式实现DMA传输，在硬件平台上通过验证实现(UART_DMA way is to use uart dma transfer nios implemented in the hardware platform validated by)

The AGC is a smart programmable gain amplifier (PGA). The amplifier gain is adjusted based upon the input signal level so that the output is at a specified Target Gain. The AGC can be configured to be either a mono or stereo input / output component. For illustration purposes, the following discussion will highlight the stereo configuration.

FPGA开发超声波测距，可改写工业探伤或倒车测距等系统，quartus2下选择EP2C5Q208C8（CycloneⅡ） 支持目前淘宝上能买到的所有4-5针超声波模块 应用cycloneⅡ自带除法模块 开发板为有光技术YG2.1 生成电路规模较小 ！！注意：移植程序仅需重新约束数码管和超声波模块的针脚 (Ultrasonic Ranging FPGA development, industrial inspection or reverse rewritable ranging systems, EP2C5Q208C8 (CycloneⅡ) under quartus2 4-5 needle ultrasonic module supports all currently scouring the treasure can buy Applications cycloneⅡ own division module Development board bright technical YG2.1 Small scale generating circuit ! ! Note: The migration program only re-constraint digital and ultrasonic modules Pin)

掌握SDRAM数据读写、刷新、初始化以及FPGA串口收发时序，熟练FIFO IP核的生成和调用。(Master SDRAM data read and write, refresh, initialization and the timing of sending and receiving of the serial port of the FPGA, skilled in the generation and invocation of the FIFO IP core.)

实现音频的I2S通信，音频柱的显示，及其噪声的处理等功能(Realization of audio I2S communications, audio column display, and its noise processing, and other functions)

code qui affiche une image sur ecran vga

高精度直流信号源，DAC1220，20位分辨率，双极性输出(High-precision DC source, DAC1220,20 bit resolution, bipolar output)

spi转i2s的verilog程序，fpga是总模块，spi和i2s是子模块，shiftreg是转换-spi transfer i2s the verilog program, fpga is the total module, spi, and i2s is the sub-module, shiftreg is to convert