That's it. The intention behind a virtual function is to support polymorphism. Divide the DB into smaller domains by grouping values into config objects. `uvm_field_utils_end. Since the uvm_sequence_item class is extended from the uvm_object class, it inherits the print method which is used to display the class variables. it does not have anything rand). Using macros like `uvm_do , `uvm_create, `uvm_send etc; Using existing methods from the base class a. It is an abstract class with no data members or functions. A memory is a collection of contiguous locations. For example, if the knobs says we're in a certain mode, and the sequence shall be constrained according to the mode, then the knobs must be available at sequence pre/post/randomize(), it is too late to read them from a. Using automation macros. . You can think of any method call as having an implicit this argument. uvm_object The primary role of uvm_object class is to define a set of common utility functions like print, copy, compare and record which can be availed by any other class in a UVM testbench to save effort. 1 I see a lot of articles which talk about whether you should be using field macros. object queues and publishes a number of transfers equal to the total length of the burst size. 2. uvm_config_db#(TYPE)::set(this,"*. The utility macro `uvm_object_utils registers this class with the factory, which we will discuss later, and allows access to the create method which is needed for cloning. Inside the test class, another uvm_config_db method i. endclass This means that our long list of assignments that the copy expands to would also contain: copy. // For example, "set_type_override_by_type" is actually a function defined in the class uvm_factory // A. Methods: Description: set(uvm_component cntxt, string inst_name, string field_name, T value); Create a new or update an existing field_name configuration setting based on cntxt and inst_name. Steps to create a UVM environment. We would like to show you a description here but the site won’t allow us. Here are my codes: typedef class tmp_for_test; class config_agent extends uvm_agent; typedef config_agent this_type; tmp_for_test #(int, byte) tmp_f_t; // Provide implmentations of virtual me. The clone () method was declared in uvm_object and returns a handle of type uvm_object. uvm_config_db is a parameterized class that is parameterized with the data type of object that is being set or get. Each of UVM’s policy classes performs a specific task for uvm_object-based objects: printing, comparing, recording, packing, and unpacking. factory. 2 uvm_object constructor. the uvm_event class makes it easy by providing uvm_event_pool. Classes derived from uvm_object must implement the pure virtual methods such as create. For convenience, you can use the subtype, uvm_in_order_built_in_comparator # (T) for built-in types. The uvm_void class is the base class for all UVM classes. In uvm_object, we discussed print, clone, copy, compare methods, etc. The UVM class library provides the basic building blocks for creating verification data and components. uvm_pool and semaphore 101. Nested classes are fully supported by SystemVerilog. Posted November 30, 2015. This article explains how to use a verbosity threshold to filter messages. uvm_object - Data structures for testbench configuration; uvm_transaction - Stimulus generation & analysis; The values of the arguments of new method are used to create an entry in a linked list which the UVM uses to locate uvm_components in a pseudo hierarchy, this list is used in the messaging and configuration mechanisms. They automatically create a new object via calls to `uvm_create, randomize the item and send it to a sequencer. env. The UVM heartbeat can detect simulation hang or lock-up conditions at an early stage rather than the expiry of the global simulation timeout. Sorted by: 1. Note that all the functions are static and must be called using the :: scope operator. UVM uses the concept of a factory where all objects are registered with it so that it can return an object of the requested type when required. uvm_component provide a set of convenience functions that call the uvm_factory member functions with a simplified interface. The record function takes a recording policy object as the argument (line 14). pyuvm implements the most often-used parts of the UVM while taking advantage of the fact that Python does not have strict typing and. A UVM sequence is just a SystemVerilog object that is constructed by calling new. Create and register the callback object. The record function of uvm_object calls the do_record. 2 User’s Guide. The handle to the uvm_resource object is stored in two kinds of uvm_queues. This is not a complete design since our purpose is simply to show how registers in this design can be read/written using a UVM register model. Class: UVMObjection. uvm_object::create method allocates a new object of the same type as this object and returns it via a base uvm_object handle. Similarly, in the second line, the all to the "uvm_root" static get method returns a reference to the top-level "uvm_root" object and we are calling the "set_timeout" method on that object. Constraints may be added via inheritance in a derived class. UVMFactory [source] ¶. The uvm_config_db class is the recommended way to access the resource database. Class Hierarchy. Type can be scalar objects, class handles, queues, lists, or even virtual interfaces) cntxt is the hierarchical starting point of where the database entry is. 4 UVM Agent. Within a non-static class method, randomize() and this. The clone method calls the create() method followed by copy(). Abstract- SystemVerilog provides several mechanisms for layering constraints in an object. randomize() are the same method call. Instances of these lightweight proxies, representing every uvm_object-based and uvm_component-based object available in the test environment, are registered with the uvm_factory. I did not register any class with the same name, unless the parent one which, I suppose, does not present any problem. uvm_object has many common functions like print, copy and compare that are available to all its child classes and can be used out of the box if UVM automation macros are used inside the class definition. 1 (IEEE 1800. The uvm_object class is the base class for all UVM data and hierarchical classes. 总结：在多进程IP中，寄存器模型 中参数uvm_object extension的使用可以极大的方便验证工程师的工作。. This enables us to monitor and record the transactions via the interface within this block. UVM Heartbeat Usage. The monitor captures values on the DUT's input and output pin. TLM Communication. 3. The important thing to remember is that each entry needs a unique field name or label (if the global scope is being used), or the path needs toThese macros are used to start sequences and sequence items on default sequencer, m_sequencer. 613. These loggers are part of the cocotb logging system. def compare_field (self, name, lhs, rhs, size, radix = UVM_NORADIX): """ Function: compare_field Compares two integral values. UVM 상세 사항에 대하여 언급하지 전에, 간단한 Testbench를 다시 작성해 봅니다. March 24, 2021. `uvm_do (Item/Seq) This macro takes seq_item or sequence as argument. 1. 用途は、UVMの「オートメーション」機能を適用するために使います。. g. UVM Testbench 작성 00장 둘러보기 00. callback in uvm_sequence. This article explains how to use a verbosity threshold to filter messages. The first step is to use macros to register all the class types with the factory. uvm_object is the one of the base classes from where almost all UVM classes are derived. This doesn't have any purpose, but serves as the base class for all UVM classes. Don’t confuse the class variable and the object. uvm_resource_pool rp = uvm_resource_pool::get(); uvm_resource#(T) _type = new(); uvm_queue#(uvm_resource_base) q; q =. My company (Doulos) recommends you. Variable S3 is declared next & creates an Object of the Class “stack” with the default Parameter is set to an “int“. So UVM phases act as a synchronizing mechanism in the life cycle of a simulation. The UVM factory allows an object of one type to be overridden with an object of its derived type without changing the testbench structure. This is known as the UVM factory override mechanism. If you use the uvm_top. the reason for this is that for IUS the m_inst_id is being set to the. Only classes derived from uvm_component have knowledge of their parentage. Unfortunately this wont work yet because we have to register seq_item as follows `uvm_object_param_utils(seq_item#(A)). class my_driver. There is often a need to copy, compare and print values in these classes. In our case, two uvm_queues are created; one for the "jb_if1" and the other for the "jb_if2". Overriding a type involves the following steps: Firstly, the. Conclusion. 1 class-based verification library and reuse methodology for SystemVerilog. The uvm_object_registry serves as a lightweight proxy for a uvm_object of type T and type name Tname, a string. Please see Register Abstraction for how each property is packed. The print method is used to deep print UVM object class properties in a well-formatted manner. In other words, uvm_objects are transient, such as transactions that are created when needed and disappear when not used anymore. Accellera UVM Tutorial 2016 is a comprehensive presentation that covers the basics and advanced features of the Universal Verification Methodology (UVM), a standard framework for creating reusable and portable verification components and environments. The register model can be used to read and write registers in the DUT, including signals connected to those registers. UVM configuration provides. The next step is to have the a UVM component grab the parameters from the configuration object. You need a uvm_sequencer with seq_item_export to connect to the driver's seq_item_port. id = 42; At this point you might be tempted to call the object “t1”. The UVM configuration database is a global repository that allows you to pass configuration information, such as parameters, objects, or handles, between different UVM components. Let’s implement the callback in uvm_sequence to modify the sequence_item before sending it to the driver. uvm_object is the one of the base classes from where almost all UVM classes are derived. 1 Answer. The first kind of queues store the handles to the uvm_resource objects that have the common field_name. Skills Needed: Students should have experience with object-oriented programming, C/C++, or. e it is allowed to send the transaction Only after consumption of the previously sent transaction, in this case, the sender and receiver must be in sync else. The UVMObject class is the base class for all UVM data and hierarchical classes. UVM factory is a mechanism to improve flexibility and scalability of the testbench by allowing the user to substitute an existing class object by any of its inherited child class objects. The uvm_object class is the base class for all uvm hierarchical classes such as uvm_report_object, uvm_component, uvm_transaction, uvm_sequence_item, uvm_sequence etc. Main concepts of UVM (1) • Clear separation of test stimuli (sequences) and test bench –Sequences are treated as ‘transient objects’ and thus independent from the test bench construction and compositionHow to use the UVM configuration facility? Configuration values are set in the uvm_config_db class using the set() method and retrieved using the get() method. Jun 20, 2014 at 15:13. They allow access to the functions copy, compare, pack, unpack, record. It consists of all the basic methods, macros, identification fields in it. 0 ‐ Their Use in Verification and UVM The prototype of the virtual function in Figure 1 is the header code: virtual function bit do_compare (uvm_object rhs, uvm_comparer comparer); This virtual method prototype includes five required elements: (1) the return type is bit, (2) theIn Introduction, we saw that most of the verification components are inherited from uvm_report_object and hence they already have functions and methods to display messages. With Easier UVM, configuration parameters should be accesed by calling uvm_config_db # (T)::get. uvm_object-based class declarations may contain one of the above forms of utility macros. 2 Class Reference for information on the. In order to create a user-defined sequence : Derive from uvm_sequence base class with a specified data object type. Share. `uvm_object_param_utils_begin. Macro. Specialization #(virtual xbus_ifc) the data type of the value, which here is a virtual Xbus interface handle. Typically configuration classes and data objects are derived from this class and are passed to different testbench components during the course of a simulation. On calling `uvm_do () the above-defined 6 steps will be executed. Here is a transaction class. Users can create/use packers anywhere in their code, not just in the context of a UVM object. trace_mode(): Set or get the trace mode for the objection object. 2. For Design specification and Verification plan, refer to Memory Model. UVM Field Macros. 1. In order to understand the different role that the Accellera Portable Test and Stimulus (PSS) standard plays versus UVM, let's consider this brief statement about what PSS is intended to accomplish, taken from the 1. e. A uvm_queue is created for every unique field_name. We would like to show you a description here but the site won’t allow us. Line 11-Line 15 Use the UVM functions to automatically implement functions such as copy(), compare(), print(), pack(), and so on. UVM pre-defines six verbosity levels; UVM_NONE to UVM_DEBUG. UVM also introduces a bunch of automation mechanisms for implementing print, copy, and compare objects and are defined using the field macros. build_phase (phase) must be called in the. UVM 1. If we already have a data object that we simply want to send to a sequencer, we can use `uvm_send. When set, metadata should be encoded as follows: For strings, pack an additional null byte after the string is packed. UVM Debugging features. It has various methods to create different uvm_component or uvm_object instances and also to override it. The factory is a special class in UVM that creates an instance for you of whatever uvm_object or uvm_component type you specify. 03 Operators 01. Constraints may be added via inheritance in a derived class. com Each component goes through a pre-defined set of phases, and it cannot proceed to the next phase until all components finish their execution in the current phase. 02. UVM Field Macros. No string-based lookup support for multiple types with the same type name. 1 Inheritance and Constraint Layering ¶ In our previous two posts in this series on Python as a verification language, we examined Python coroutines and using coroutines to create cocotb bus functional models. Alternatively, if the change is intended to be global, there is a default printer that automatically created at root called uvm_default_printer . The events provide synchronization between processes by triggering an event from one process and waiting for that event in another process to be triggered. The document covers the UVM 1. uvm_transaction and uvm_component are also derived from uvm_object. Constraints may be added via inheritance in a derived class. uvm_object is the one of the base classes from where almost all UVM classes are derived. 02. Block abstraction base class. The UVM sequencer provides the facility to have exclusive access for the sequence to a driver via a sequencer using a locking mechanism. Share. It is an abstract class with no data members or functions. All components and object classes in a UVM environment are derived from uvm_object base class. In Manufacturing, Casting is a process in which liquid metal is converted into the desired object. user_callback callback_1; callback_1 = user_callback::type_id::create ("callback_1", this); In order to execute the callback method, register the callback object to the driver using. e. and a whole lot more!using EDA Playground VHDL Verilog/SystemVerilog UVM EasierUVM SVAUnit SVUnit VUnit TL-Verilog e + Verilog Python + Verilog Python Only C++/SystemC. We would like to show you a description here but the site won’t allow us. A policy object can be passed along to set parameters like depth of comparison, verbosity, maximum number of. The UVM is completely described in the IEEE 1800. Memory abstraction base class. UVM TestBench to verify Memory Model. g. The compare method returns 1 if comparison matches for the current object when it is compared with the R. However, I downloaded the UVM library from accelera's website and looked at the code and it looks like it's just some SystemVerilog. Unfortunately, SystemVerilog does not provide a good way to save Creates a new event object. {"payload":{"allShortcutsEnabled":false,"fileTree":{"distrib/src":{"items":[{"name":"base","path":"distrib/src/base","contentType":"directory"},{"name":"comps","path. Pack. You are mixing up the terms parent and child with the principals of class inheritance. However, are they supported by UVM?When working with UVM, the phrase "you gotta use the factory!" gets drilled into our heads constantly. This keeps your code base stable,. module traffic ( input pclk, input presetn, input [31:0] paddr, input [31:0] pwdata. One thing that always confuses me: is whether add uvm_component parent in the class constructor of UVM objects or not. pyuvm is the Universal Verification Methodology implemented in Python instead of SystemVerilog. The UVM methodology enables engineers to quickly develop powerful,. This is not a complete design since our purpose is simply to show how registers in this design can be read/written using a UVM register model. Blocks ¶. Both UVM Factories allow you to create objects, either the base type or a derived, without changing the call to create(). my_sequence and reset_sequence are declared like any normal sequence: my_sequence extends uvm_sequence (#transaction); – noobuntu. TYPE’s constructor, if defined, must have default values on all it arguments. You can use wildcards in the scope strings, but limit them to the end of the string to help performance. uvm_reg::update. UVM provides a transaction class that can be extended to create transaction objects that carry information between the DUT and the testbench. env. Gets the data, if any, provided by the last call to trigger. 02. uvm_config_db::get () is used to fetch the value of the virtual interface and assign it to configuration object property. An uvm_component inherits from. Since this Specialization matches to the Specialization created when we created a typedef “ stack_int ” above, it uses the existing Specialization & the “ counter ” associated with default Specialization will left. event_object_h =. Parameterized classes in the UVM must be registered using the uvm_object_param_utils macro as below: `uvm_object_param_utils (som_util# (entry_w)) For more background, please see my discussion on this topic. Every uvm_object instance has a compare() method for performing comparisons with another object. Its primary role is to define a set of methods for such common operations as create, copy, compare, print, and record . In this post, let’s think of it as a global associative array where the keys are strings of event names, and the values are the uvm_event objects. TimConclusion. It is an object that is used for instantiating other objects. The handle to the uvm_resource object is stored in two kinds of uvm_queues. UVM tutorial for beginners Introduction Introduction to UVM UVM TestBench TestBecnh Hierarchy and BlockDiagram UVM Sequence item Utility & Field Macros Methods with example Create Print Copy Clone Compare Pack UnPack UVM Sequence Sequence Methods Sequence Macros Sequence Example codes UVM Sequence control UVM. In our case, two uvm_queues are created; one for the "jb_if1" and the other for the "jb_if2". factory. This is known as the UVM factory override mechanism. Using do_copy. The reason being packet and packetD are type compatible, since packetD is an extension of packet. Improve this answer. I have two class handles inside my sequence item. 04 Packed and Unpacked arrays 01. comp", "db_rx_agent_cfg", rx_cfg);The factory makes it is possible to override the type of uvm component /object or instance of a uvm component/object in2 ways. UVM objects are. Registration: While defining a class , its type has to be registered with the uvm factory. The uvm_analysis_port is a specialized TLM based class whose interface consists of a single function write () and can be embedded within any component as shown in the snippet below. The most common UVM macros are: uvm_component_utils: registers a new class type when the class derives from the class uvm_component; uvm_object_utils: similar to uvm_component_utils, but the class is derived from the. A message with the UVM_NONE level is. Line 11-Line 15 Use the UVM functions to automatically implement functions such as copy(), compare(), print(), pack(), and so on. Thanks,Hello lets say I have a code like this, the parameters NUM_MASTERS and NUM_SLAVES are defined in configuration object: class abc extends uvm_scoreboard; configuration cfg; wrapper_class master[];. The first three methods above take uvm_object_wrapper as their type argument (s). Pass config objects inside your testbench with OOP-style set_config() methods, instead of the confusing uvm_config_db. virtual function uvm_object. function new (string name, uvm_component parent); super. Why the factory is important, though, and how it helps us achieve that goal may be. It helps increase flexibility and resuability of our testbench. uvm_object. Such a configuration database allows us to store different configuration settings under different names. uvm_config_db#(TYPE)::set(this,"*. uvm_event_pool is a pool that stores the uvm_events. Using clone method. `uvm_create (Item/Seq) This macro creates the item or sequence. UVM also introduces a bunch of automation mechanisms for implementing print, copy, and compare objects and are defined using the field macros. To do this job easier, uvm has predefined macros. UVM FACTORY. The uvm_object provides methods like create, clone, copy, record, compare, print, etc. // Create a new class with a single member called // count that stores integer values class Packet; int count; endclass module tb; // Create two "handles" for the class Packet // Note: These "handles" now. So all you need to do is remove the type E parameter declaration. Connect and share knowledge within a single location that is structured and easy to search. You need to create a uvm_object temp variable, then do an explicit dynamic cast, e. Follow. It looks like you have a compilation of uvm_pkg from a previous run that is conflicting with this run. UVM automation macros also include mechanisms to pack class variables into a bit or byte stream, and unpack a bit stream and populate the class contents. 02. 01 Simulation 환경 01장 SystemVerilog for Testbench 01. A grandparent class of uvm_sequence_item is uvm_transaction, which contains the following field definitions: class uvm_transaction extends uvm_object; const uvm_event_pool events = new; uvm_event begin_event; uvm_event end_event; //. Inline constraints (i. This flexibility allows comprehensive testing of different configurations using a single, reusable testbench, significantly reducing development time and effort. See Usage section below for information on using uvm_component_registry. If user wants to run a test with PCIe speed = Gen2 and lanes = x2, then this can be achieved simply by having +link_speed=gen2 and +lanes=2 on command line arguments, and in verification. This is particularly useful when dealing with serial forms of communication like SPI, I 2 C and RS-232. Since the RTL code does not know anything about the test class, it uses a null handle, and “uvm_test_top“, the instance name of the test object. write (), it basically cycles through. Its primary role is to define a set of methods for such common operations as create, copy,. uvm_object - Data structures for testbench configuration; uvm_transaction - Stimulus generation & analysis; The values of the arguments of new method are used to create an entry in a linked list which the UVM uses to locate uvm_components in a pseudo hierarchy, this list is used in the messaging and configuration mechanisms. You need to create a uvm_object temp variable, then do an explicit dynamic cast, e. 09. 1. After the utility macro are the field automation macros in the form ‘uvm_field_*(data member, flag). 만약 +UVM_OBJECT_DO_NOT_NEED_CONSTRUCTOR 옵션을 설정하는 경우 constructor를 기술하지 않을 수 있지만 권장하지는 않는다. We’ve already talked about how the factory uses uvm_object_wrappers to perform the actual creation and maps type names to such objects. Later on, we want to run the same set of tests created above, using the same transaction. The uvm_object class is the base class for all UVM data and hierarchical classes. Such a. Its primary role is to define a set of methods for such common operations as create, copy, compare, print, and record . UVM has a rich reporting facility. Using automation macros. A block represents a design hierarchy. A flat uvm_config_db with wildcard scopes and many entries can be a performance hog. module traffic ( input pclk, input presetn, input [31:0] paddr, input [31:0] pwdata. These levels are nothing but integer enum values (the parentheses in the figure show the values). H. uvm_object¶ class uvm. A user-defined printer has been developed by us. sv is included. The UVM TLM library defines several abstract, transaction-level interfaces and the ports and exports that facilitate their use. Then from your component, do. It does a deep comparison. This method calls uvm_event_base::wait_ptrigger followed by. Print method; Copy and clone methods; Compare method; Pack / Unpack methods; Resource database in UVM. The compare method returns 1 if comparison matches for the current object when it is compared with the R. Uvm components, uvm env and uvm test are the three main building blocks of a testbench in uvm based verification. Let’s discuss the macro-based approach in UVM sequence macro and existing methods approach in the uvm_sequence_base class methods section. API for matching particular component/object and can only set verbosity of that component/object. g. OOP enables writing reusable code. It is the base class for all UVM data and hierarchical classes. SNUG 2018 Page 6 SystemVerilog Virtual Classes, Methods, Interfaces Rev 1. Bases: object. You can either have a drive_item task in the driver, or you can call a. 03 Operators 01. Intro. The word “factory” in UVM refers to the substitution of any object or component in the verification environment without modifying any part of code in any testbench. ), instance identification fields (name, type name, unique id, etc. I'm looking for a way to get all instances of a given uvm_object class, preferably filtering with hierarchy/scope and name. A memory may be accessible via more than one address map. Using UVM in SystemC is a tutorial paper that presents the benefits and challenges of applying the Universal Verification Methodology (UVM) to SystemC-based verification environments. – dave_59. First up, let’s briefly cover the semaphore and uvm_pool. Follow. Accellera believes standards are an important ingredient to foster innovation and continues to encourage industry innovation based on its standards. Your sequence would have, instead of an array of pixels, an array of ints, and then you could transform from/to in the driver and monitor. It does a deep comparison. T(semaphore)) semaphore_pool To get the handle of. ; It is singleton class. 1. The concept of design patterns specifically for SystemVerilog object oriented programming (OOP) languages was popularized in 1994 by the book “Design Patterns: Elements of Reusable Object-Oriented Software. That means the other parameter Tname of. `uvm_do (Item/Seq) This macro takes seq_item or sequence as argument. They are distinct objects. class uvm. task body; i2c_packet pkt; pkt = i2c_packet::type_id::create("pkt"); pkt. This class will also need to be able to get information from the config_db using hierarchical paths, and plain old uvm_objects don't have hierarchy. Once unzipped, I see the source files with uvm. The uvm_resource_base class is a common base class for the resource container family that defines a set of functions. This proxy object is of uvm_component_registry class parameterized with the type of the initially desired component/object. The uvm_object class is the base class for all UVM data and hierarchical classes. Accellera believes standards are an important ingredient to foster innovation and continues to encourage industry innovation based on its standards. Sometimes a uvm_object is only needed by 1 other uvm_component, so, following object-oriented theory, we should use nested/inner classes. UVM Object Pack/Unpack. For more efficient and more flexible implementation, we can use user definable do_*() hooks. Using automation macros. Define your virtual method, for example wait_state, but leave it empty. Blocks. 1. メンバの型によって、さまざまあります。. The constructor of uvm_component adds a uvm_component parent argument which is used to create. Teams. SNUG 2012 6 The OVM/UVM Factory & Factory OverridesThe UVM register layer acts similarly by modeling and abstracting registers of a design. I found having parameters in uvm_object/uvm_componet is handy in some case, but I know some one think it is a bad idea. The do_pack() is used to pack each propery of the jelly_bean_transaction object using a uvm_packer policy object. If we expand the macro, it will call m_uvm_object_registry_param(T) define where there is a typedef of uvm_object_registry#(T). com Welcome to our site! EDAboard. As you say, the UVM field automation macros generate a number of class utility methods such as copy, print and clone that include the registered fields. Using start_item/finish_item methods. Triggers the event, resuming all waiting processes. UVM has a rich reporting facility. 02. Because this will be created during the run_phase it can't extend uvm_component, and it wouldn't make sense for this class to have phases. The UVM agent is a hierarchical component that groups together other verification components that are dealing with a specific DUT interface. Posted November 30, 2015. UVM_Object. The UVM recommends that the following constructor be specified for any class extended from uvm_object: However, in UVM 1. The source of this command can be traced to the following: (1) tb_driver is an extension of uvm_driver, which is an extension of uvm_component, which is a derivative of. Eventually, everything in UVM is derived from this base class, including uvm_sequence_item. Pre-defined Verbosity Levels. In a previous article, print, do_print and use of automation macros to print were discussed. UVM stands for U niversal V erification M ethodology. Two things: 1) You could extend mem_seq_item from "uvm_sequence_item" instead of "uvm_object". 이때 아래의 그림과 같이 agent내부에서는 어떤 configuration이 uvm_config_db를 통하여 설정됨을 가정하여 get ()으로. There are two important parts to using the factory. class my_test extends uvm_test uvm_table_printer m_printer; //. UVM Testbench 작성 00장 둘러보기 00. This method calls uvm_event_base::wait_trigger followed by get_trigger_data. You can assure clients that the. The uvm_resource#(type T) is a parameterized class that provides additional functions like read() and write() for resource operation.