函数不可以调用task,因为task可能含有耗时语句,而函数不支持耗时语句。 Task的特点: task 可以内置耗时语句,也就是当调用task时,这个结果可以不是立即返回的; task 既可以调用function,也可以调用task; task不可以用 return 返回值; task 可以在参数列表中定义参数方向,以此来返回值,可以返回一个或多个值; task的...
task reset_alu(); reset_n = 1'b0; @(negedge clk); @(negedge clk); reset_n = 1'b1; start = 1'b0; endtask : reset_alu task send_op(input byte iA, input byte iB, input operation_t iop, shortint result); if (iop == rst_op) begin @(posedge clk); reset_n = 1'b0; sta...
所以需要用taskpurevirtualtaskpopuplarVideos(refVideovedio_assoc[string]);purevirtualtaskgetVideo(inputstringvideoId,outputVideovideo);endclass// 远程服务实现classThirdPartyYouTubeClassimplementsThirdPartyYouTubeLib;virtualtaskpopuplarVideos(refVideovedio_assoc[string]);connectToServer...
2,在class中,需要使用virtual interface来实例化。 即class my_driver extends uvm_driver virtual my_if vif; XXXXX; endclass
19.6.4 An example of multiple task exports19.7 参数化接口19.8 虚拟接口19.8.1 Virtual interfaces and clocking blocks19.8.2 Virtual interfaces modports and clocking blocks19.9 对接口对象的访问第二十章 覆盖20.1 简介(一般信息)20.2 定义覆盖模型:covergroup20.3 在类中使用covergroup20.4 定义覆盖点20.4.1 ...
2.3 BSV vs. HLS BSV与高层次综合 (HighLevelSynthesis,HLS) 的理念有本质上的不同。BSV 的目标是提高电路的时钟周期级行为的描述能力,而 HLS 则试图屏蔽时序的概念,以无时序描述能力的高级语言(C/C++)为起点,靠自动调度来确定执行时序。虽然这让软件设计人员能够快速上手,但也让 HLS 的应用场合受限。例如,HLS...
between blockstask calls…….. OOP:Your First Class 略。。。 BusTran b; <—Declare a handle that points to an object of the type BusTran .When a handle is declared it is initialized to null b= new();<- call the new function to construct the BusTran object. ...
DPI layers function import function export task export Using SystemVerilog simulation timing in a C model DPI -vs- PLI example No PLI required How to compile and simulate C-code with SystemVerilog designs SystemVerilog & SystemC Day Two 4. ...
Constrained Random Variables, Functional Coverage and Virtual Classes, Methods and Interfaces - Random variables & constrained random testing are important HVL enhancements to SystemVerilog to assist the verification task. Functional coverage enables engineers to verify what has already been tested and to ...
Table of Contents Section 1 Introduction to SystemVerilog ... 1 Section 2 Literal Values...