8 x 8 乘法器

ahbsram contains all codes of sram

说明：  risc 8 by coonan compatible with PIC16C57

用FPGA实现SPWM波输出，其中包含三角波和正弦波(With the FPGA realization of SPWM wave output, including triangle wave and sine wave )

QFSK的调制与解调，用C写的主程序，汇编写的调制与解调的子程序(QFSK the modulation and demodulation, with the main program in C, compile writing, the modulation and demodulation of the Subprogram)

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)

北京中教仪装备技术有限公司制作，关于xilinx FPGA使用的教程，包括ISE、picoblaze、microblaze等的使用说明。(some paper for the use of ise， picoblaze,microblaze)

VGA显示控制：时序控制+像素点的颜色处理显示十字光标（vorilog）(VGA Display Control: Timing Control+ pixel color processing and display cross cursor (vorilog))

基于网口的收发数据及解析数据内容的verilog代码实现(Based on the Internet port to send and receive data and parse the contents of the data verilog code)

这种电路将加载 （写） 的地址内的 RAM 和显示地址的数据序列。 在读期间，我们可以触发一个中断对数据进行排序升序和显示 5 次，并返回 回读状态。

数字示波器实验，利用AD、DA和VGA三个外设来实现简易示波器，DA外设发送正弦波给AD外设，AD外设解析成数字信号将数据送给VGA外设进行显示。在VGA上可以看到DA外设发送的波形、波形频率和波形峰峰值。(In the experiment of digital oscilloscope, AD, DA and VGA are used to realize simple oscilloscope. DA peripheral transmits sine wave to AD peripheral. AD peripheral resolves into digital signal and sends data to VGA peripheral for display. The waveform, waveform frequency and peak value of DA peripheral can be seen on VGA.)