能够实现8位的无符号数的乘除法，模拟了笔算的过程

介绍如何使用vivado来调用和封装IP核，测试AXI4总线的三种功能协议。(It describes how to use vivado to call and package IP core test three functions AXI4 bus protocol.)

说明：  Verilog实现液晶1602显示,学习使用(Verilog LCD1602)

根据软件无线电的思想，提出了一种新颖的数字信号处理算法，对QPSK信号的相位进行数字化处理，从而实现对QPSK信号的解调.该算法允许收发两端载波存在频差，用数字锁相实现收发端载波的同步，在频偏较大的情况下，估算频偏的大小，自适应设置环路的带宽，实现较短的捕获时间和较好的信噪性能。整个设计基于XILINX公司的ISE开发平台，并用Virtex-II系列FPGA实现。用FPGA实现调制解调器具有体积小、功耗低、集成度高、可软件升级、扰干扰能力强的特点，符合未来通信技术发展的方向。(According to the idea of software radio, a novel digital signal processing algorithm, the phase of QPSK digital signal processing, enabling the demodulation of QPSK signals. This algorithm allows the sending and receiving ends of the carrier frequency difference exists, using digital phase-locked to achieve synchronization of sending and receiving end of the carrier, in the case of large frequency offset, frequency offset estimation of the size, adaptive set the loop bandwidth to achieve shorter acquisition time and better noise performance. The whole design is based on the company XILINX ISE development platform, and Virtex-II series with the FPGA. FPGA realization of a modem with a small size, low power consumption, high integration, software upgrades available, the characteristics of strong interference interference, in line with the future direction of ICT development.)

波形发生器，带TESTBENCH， 多平台 -- the design makes use of the new shift operators available in the VHDL-93 std -- this design passes the Synplify synthesis check -- download from: www.fpga.com.cn & www.pld.com.cn -waveform generator, with TESTBENCH. Multi-platform-- the design makes use of the new shift opera tors available in the VHDL-93 std-- this design passes the Synplify synthesis check-- downloa d from : www.fpga.com.cn

The Date prototype object is itself a Date object (its [[Class]] is "Date") whose value is NaN.

this is a sum for 2 digit numbers

高精度小数除法器设计与实现。 在FPGA开发板上实现小数除法器，输入输出信号N_in [15:0], D_in[15:0]，N_in[15:0]小于D_in，即被除数小于除数，输出商Q_out[15:0]中Q[15]一定为0，Q[14:0]为商的小数部分。输入和计算结果通过VGA显示。(Precision fractional divider design and implementation. In the FPGA development board fractional divider, input and output signals N_in [15: 0], D_in [15: 0], N_in [15: 0] less than D_in, ie the dividend is less than the divisor, quotient output Q_out [15: 0] in Q [15] necessarily 0, Q [14: 0] for the business of the fractional part. Input and calculation results display by VGA.)

用Actel公司的Fusion系列FPGA开发的LCD实验程序-Fusion with Actel s FPGA development series LCD Experimental procedures

《Verilog HDL 程序设计教程》7-"Verilog HDL Design Guide," 7

说明：  2020 XILINX Vivado ISE IP License最全最可靠License获取方式。 LDPC, CPRI, Turbo, Polar, JESD204B/C HDMI1.4/2.0, MIPI CSI-2, MIPI DSI AXI CAN AXI USB2.0 SD Card Host Reed-Solomon Decoder/Encoder 10G Enthernet MAC 25G Enthernet MAC 40G Enthernet MAC 50G Enthernet MAC 100G Enthernet MAC RS Encoder/Decoder Display Port/ DP Video Test Pattern Generator RapidIO tri mode ethernet mac(LDPC, CPRI, Turbo, Polar, JESD204B/C HDMI1.4/2.0, MIPI CSI-2, MIPI DSI AXI CAN AXI USB2.0 SD Card Host Reed-Solomon Decoder/Encoder 10G Enthernet MAC 25G Enthernet MAC 40G Enthernet MAC 50G Enthernet MAC 100G Enthernet MAC RS Encoder/Decoder Display Port/ DP Video Test Pattern Generator RapidIO tri mode ethernet mac)