(1)UVM中真正的树根,任何组件实例都在它之下(如果组件的parent为null,那么该组件为uvm_top的子组件); (2)uvm_top是一个全局变量,是uvm_root的一个实例,也是uvm_root唯一的实例. (3)uvm_top的名字是_top_,但是在显示路径时,并不会显示这个名字,而只显示从uvm_test_top开始的路径. (4)uvm_top.find及示...
(1) uvm_test_top实例化时的名字是uvm_test_top,这个名字是由UVM在run_test时自动指定的; (2) uvm_top的名字是_top_,但是在显示路径时,并不会显示这个名字,而只显示从uvm_test_top开始的路径; 2. uvm_root(类 ) (1) uvm_root本质是uvm_component; (2) uvm_root的存在是为了保证验证平台只有一棵树...
uvm_test 在run_test()中会被cast成uvm_test_top,所以test中的component它们的parent 就是uvm_test_top。
testbench.sv(68) @ 150: uvm_test_top.env.agent_inst.d \[DRV\] Mode :Read | WDATA : 187 ADDR : 225 RDATA : x UVM_INFO testbench.sv(141) @ 190: uvm_test_top.env.agent_inst.m \[MON\] Mode : Read | WDATA : 187 ADDR : 225 RDATA : x UVM_ERROR testbench.sv(187) @...
UVM中的executionmanager组件(uvm_root)会去根据UVM_TESTNAME关键词读入test_base,读入的方法是test.sv里面的run_test(),而且会同时利用UVMfactory的机制去创建一个uvm_test_top的顶层。 哪一句代码会引起+UVM_TESTNAME=test_base传入进来? run_test();run_test( ) 还会去创建uvm_test_top的树形结构,做为做顶...
UVM Phases top downUVM Phases are a synchronizing mechanism for the environmentPhases are represented by callback methods, A set of predefined phases
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object "uvm_test_top" attempted to drop objection "main_objection" count below zero 答:原因是因为drop_phase和raise_phase的数量不匹配,drop_phase