Verilog Examples - Clock Divide by 2 A clock Divider has a clock as an input and it divides the clock input by two. So for example if the frequency of the clock input is 50 MHz, the frequency of the output will be 25 MHz. In other words the time period of the outout clock will...
通用移位寄存器 通用移位寄存器可以载入并行数据,左移,右移,保持;它能够实现并-串功能(先载入并行数据后移位),也可实现串并功能(先移位后并行输出)。 //Listing 4.8 moduleuniv_shift_reg #(parameterN=8) ( inputwireclk, reset, inputwire[1:0] ctrl, inputwire[N-1:0] d, outputwire[N-1:0] q )...
outputregeq//eq declared as reg ); //p0 and p1 declared as reg regp0, p1; always@(i0, i1)//i0 an i1 must be in sensitivity list begin //the order of statements is important p0=~i0&~i1; p1=i0&i1; eq=p0|p1; end endmodule //Listing 3.2 moduleand_block_assign ( inputwi...
3、Simple Examples 我们来看一些简单的例子,首先是打印Hello World,毫无疑问这段代码是不可以综合成电路的,这里简单看一下就行。 下面这个例子展示了使用三种方式实现Mux,我建议用第一种,即使用assign。这三段代码生成的电路是一模一样的,但是我们可以看到,out有的被声明成了reg,有的声明成了wire。但实际上其对应...
end initial begin $monitor("t=%3d enable=%1b,x=%2b, y=%4b",$time,enable,x,y ); end endmoduleExercise 1. Run the above two examples and verify that the output is as expected. Copyright © 2009 Reference Designer Tutorials| Products| Services| Contact Us...
Memory Model TestBench Without Monitor, Agent, and Scoreboard Table of Contents Memory Model TestBench Without Monitor, Agent, and Scoreboard TestBench Architecture Transaction Class Generator Class Interface: Driver Class Environment Test TestBench Top TestBench Architecture SystemVerilog TestBench Transact...
Verilog语法中parameter与localparam 对读者的假设 已经掌握: .可编程逻辑基础 .Verilog HDL基础 .使用Verilog设计的Quartus II入门指南 .使用Verilog设计的ModelSIm入门指南 内容 1 常量 HDL代码经常在表达式和数组的边界使用常量。这些值在模块内是固定的,不可修改。一个很好的设计惯例是用符号常量取代这些hard literal,...
Console Result from Modelsim Simulation: (Same for both VHDL and Verilog Examples above) # Time 0: r_Data at Index 0 is 0 # Time 10: r_Data at Index 1 is 1 # Time 20: r_Data at Index 2 is 4 # Time 30: r_Data at Index 3 is 9 # Time 40: r_Data at Index 4 is 16 #...
Get Embedded SoPC Design with Nios II Processor and Verilog Examples now with the O’Reilly learning platform. O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers. Start your free trial About...
FSMD(带数据通道的有限状态机)是FSM和常规时序电路的结合。 基于RT methodology的消抖电路设计 本设计中主要的数据通道是一个用户自定制的21位递减计数器,其作用为: 1:可初始化为一个指定的值; 2:具有递减计数和暂停计数的功能; 3:当计数器计数为0的时候,输出一个状态信号。