SystemVerilog function可以将参数声明为输入和输出端口,如以下示例所示。 moduletb;initialbeginintres, s; s = sum(5,9);$display("s = %0d", sum(5,9));$display("sum(5, 9) = %0d", sum(5,9));$display("mul(3, 1) = %0d", mul(3,1, res));$
断言设计相当于在电脑上把RTL实现的功能再实现一遍。 2. 断言中可以包含function和task function经常用于断言,因为有的处理很复杂,而断言又是“一句式”的,无法分成好几句进行表达,所以需要function替断言分担工作。 3. 断言允许规定同时发生的事件,就是组合逻辑,你可以写成:a&& b,也可以写成 a ##0 b,不能写 ...
断言设计相当于在电脑上把RTL实现的功能再实现一遍。 2. 断言中可以包含function和task function经常用于断言,因为有的处理很复杂,而断言又是“一句式”的,无法分成好几句进行表达,所以需要function替断言分担工作。 3. 断言允许规定同时发生的事件,就是组合逻辑,你可以写成:a&& b,也可以写成 a ##0 b,不能写 ...
1、对象字面量的方式 person={firstname:"Mark",lastname:"Yun",age:25,eyecolor:"black"}; 2、用function来模拟无参的构造函数 function Person(){} var person=new Person();//定义一个function,如果使用new"实例化",该function可以看作是一个Class ="Mark"; person.age="25"; person.work=function(...
function new(string name="producer_config_inst"); super.new(name); endfunction int min_addr = 'h00; int max_addr = 'hff; int min_data_len = 10; int max_data_len = 80; int max_trans = 5; virtual function void do_pack(uvm_packer packer); ...
However, when we use inline declaration for the inputs and outputs, we can omit the begin and end keywords. When we write tasks in SystemVerilog, we can also declare and use local variables. This means that we can create variables in a task which we can’t access in other parts of ou...
Yes, it's possible to override existing constraints in SystemVerilog using inline constraints or inheritance. class ABC; rand bit [3:0] data; constraint c_data { data inside {[5:10]}; } endclass module tb; initial begin ABC abc = new; // Use inline constraint to override with new va...
sc_spawn(&f); // Spawn a function without arguments and discard any return value. // Spawn a similar process and create a process handle. sc_process_handle handle = sc_spawn(&f); Functor fr; sc_spawn(&ret, fr); // Spawn a function object and catch the return value. ...
While running the simulation, after compilation of all modules I'm getting a DPI import function/task error. I'm posting the error message below: I checked installation paths and libraries for this function but couldn't find anything related to this file. The input I got from...
Parsing design file 'gen_pkt_tb.sv' Top Level Modules: hello_world No TimeScale specified Starting vcs inline pass... 1 module and 0 UDP read. recompiling module hello_world make[1]: Entering directory '/home/knat/tmp/c_call_py/0.systemverilog_only/csrc' rm -f _csrc*.so pre_vcs...