显然,对于有相同接口的DUT,agent是可重用的。关于代理器和相应BFM的更多内容可参考https://verificationacademy.com/patterns-library/implementation-patterns/environment-patterns/bfm-proxy-pair-pattern agent-active 接下来我们研究一下APB agent是如何组成、配置、构建和连接的。APB agent的pin接口apb_if编写在apb_if...
在这些事务处理器之上的testbench的部分由专门在事务级进行交互的组件组成,如scoreboard, coverage collector, sequencer等。UVM testbench中的所有组件都是从uvm_component基类扩展而来。 UVM testbench的最低级别是特定于接口的。对每个接口而言,UVM提供一个uvm_agent,其中包括 driver, monitor, sequencer和coverage colle...
The whole environment of UVM is structured on phases. They are active right from the beginning of the simulation to the end of the simulation. The topic discussed here will help people who are new to UVM. To start with, most of the phases are call back methods. The methods are either f...
MTI_VCO_MODE –Set this environment variable to 64 to use the 64-bit Questa executable for UVMF testbench simulations. Get workDir = pwd; addpath("./scripts"); setenv("UVMF_HOME","/home/Documents/UVMF_2023.4_2"); setenv("MTI_VCO_MODE","64"); You can develop the pred...
Testbench Sequence Item // This is the base transaction object that will be used// in the environment to initiate new transactions and// capture transactions at DUT interfaceclassItemextendsuvm_sequence_item;`uvm_object_utils(Item)randbitin;bitout;virtualfunctionstringconvert2str();return$sformatf...
the testbench environment. These are static entities calledcomponentsin a verification environment that...
There are several ways in which sequences can be developed which includes randomization, layered sequences, virtual sequences etc which provides a good control and rich stimulus generation capability. Reporting mechanism – helps in debugging environment with many agents. One can filter and ...
Viewed as a diagram, the generated environment for two agents each using a register model would look like this: Figure: Connecting the Register Layer When instantiating a register model, each agent that uses the register model is instantiated within its own env, which means that the generator cr...
In a block level UVM testbench, the environment (denoted by ENV) contains the agents needed to communicate with the DUT's interfaces in one place, as shown in Fig. 2. The ENV may also contain a configuration object, scoreboard, coverage monitor, and virtual sequencer. The configuration objec...
The figure below shows the diagram of the RAL-related classes. The standard UVM classes are shown in pink, while the jelly-bean classes are shown in light blue. The diagram looks busy, but bear in mind that I will explain each jelly-bean class one by one. ...