Top module name : SHIFTER (File name : SHIFTER.v) 2. Input pins: SHIFT [3:0],...

数字时钟管理器，xilinx公司开发板集成时钟，实现分频、倍频等功能。(Digital clock managers, xilinx development board integrated clock divider, multiplier, and other functions.)

24秒倒计时系统（有跑马灯） 利用CPLD-24 seconds remaining systems (5,250) using CPLD

1. 一位全加器设计 LIBRARY IEEE; USE IEEE.STD_LOGIC_1164.ALL; ENTITY add IS PORT(a,b,cin:IN STD_LOGIC; Co,S:OUT STD_LOGIC); END ENTITY add; ARCHITECTURE fc1 OF add is BEGIN S

Top module name : SHIFTER (File name : SHIFTER.v) 2. Input pins: SHIFT [3:0], IN [15:0], SIGN, RIGHT. 3. Output pins: OUT [15:0]. 4. Input signals generated from test pattern are latched in one cycle and are synchronized at clock rising edge. 5. The SHIFT signal describes the shift number. The shift range is 0 to 15. 6. When the signal RIGHT is high, it shifts input data to right. On the other hand, it shifts input data to left. 7. When the signal SIGN is high, the input data is a signed number and it shifts with sign extension. However, the input data is an unsigned number if the signal SIGN is low. 8. You can only use following gates in Table I and need to include the delay information (Tplh, Tphl) in your design.

说明：  在quartus上运行16QAM仿真，实现在modelsim上的波形仿真(Running 16QAM simulation on quartus)

交织和解交织模块，采用矩阵交织方式，且有两套并行存储器，可以实现连续数据流操作，不会有数据滞留和丢失-Intertwined intertwined reconciliation module, interwoven matrix approach, and has two sets of parallel memory, you can realize continuous data stream operations, will not have data retention and loss

键盘输入液晶模块显示字符,在液晶显示屏上显示从PS2键盘输入的字符-Keyboard input LCD display module characters displayed in the LCD screen from the PS2 keyboard input characters

在 FPGA，SPI、 I2C 等 ASI，串行接口的实现来武力作为需要实现外围设备之间的接口。这个项目给 VHDL 源代码实施 SPI 接口和他们有关的文件。

说明：  FPGA PLL 分析，包括时序分析等等。。。。。。。。。(FPGA PLL Analysis)

基于Verilog HDL出租车计费系统的研制(Based on Verilog HDL Taxi Accounting System)