24 Error: VHDL error at period_counter.vhd(38): type of identifier "alarm" does not agree with its usage as std_logic type ---"alarm"的定义类型与使用的类型不一致 25 Error: VHDL error at shift_reg.vhd(24): can't synthesize logic for statement with conditions that test for the edges...
18.Warning: Using design file lpm_fifo0.v, which is not specified as a design file for the current project, but contains definitions for 1 design units and 1 entities in project Info: Found entity 1: lpm_fifo0 原因:模块不是在本项目生成的,而是直接copy了别的项目的原理图和源程序 而生成的...
task object[.constraint_identifier]::constraint_mode( bit on_off ); //控制当前object的cosntraint的随机开关。 function int object.constraint_identifier::constraint_mode(); //返回object的当前的constraint_mode()值 1. 2. 其他随机方式 std::randomize() 相比与内建在class的随机,std::randomize更加灵...
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class_type::{class_type:: } identifier 其中class_type可以是以下几种类型 class类型名字; package类型名字; typedef名字; covergroup类型名字; coverpoint名字; cross名字; 类型参数。 注:在SystemVerilog中,类作用域操作符::可以应用到类所有的静态(static)成员(属性和方法)、typedef、枚举、参数、local参数、约束...
line 45, include file: ../src/package/src//ovm.svh line 23, file: ../src/package/src/ovm_pkg.sv line 26) virtual function string get_type_name (); \ | ncvlog: *E,NULLEI (../src/package/src//macros/ovm_phase_defines.svh,30|47): zero length escaped identifier [2.7.1(IEEE)]...
identifier"printf"isundefinedprintf("After weight refresh\n"); ^1error detectedinthe compilationof"D:/Code/NCICC/Testbench_SV/TestofDPI/Huffman_func.c". **Error: (sccom-6143)Creationofdebug database failed. 使用命令行,分别输入下面命令。第一个命令编译VHDL代码,第二个编译SV和C代码 ...
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'undef text_macro_identifier 一个取消了的宏没有值,就像它未被定义一样。4.条件编译指令条件编译指令包括'ifdef、'else、'elsif、'endif、'ifndef。这些指令用来控制Verilog HDL的源程序代码行是否参与编译。'ifdef指令用来检测一个宏名是否被定义过。如果宏名已经被定义过,那么跟在'ifdef指令后的代码行就被包含...
; [变量说明] begin [顺序处理语句] end 过程名; 函数的书写格式如下: function 函数名(参数 1,参数 2,……) return 数据类型名 is [定义语句] begin [顺序处理语句] return [返回变量值]; end 函数名; 5.2.3 标示符(Identifier) 标示符是指 VHDL 中的代表一定含义的符号.一个规范的程序的标示符应能...