In this article I am describing one technique (out of many) to catch the scenario in which a DUT (Device Under Test) gets stuck, no longer outputting any information on some particular bus. A very common scoreboard...
Cristian SlavThe Power of “define … as computed”
‘e’ language is a very powerful language which allows us to make incredible things with its native syntax. It is difficult to reach a point in which you want to do something not supported by the language...
Course: Design Verification with SystemVerilog/UVM
I’ve created a course on Udemy called “Design Verification with SystemVerilog/UVM“. In this course, you’ll delve into two crucial areas: UVM Library: Uncover all its features, secrets, and how...
Verification Is All About … Trust
Dear future verification engineer, You are about to start a very privileged career. You will have the opportunity to see your work all around you. When you’re in the subway and you see someone watching on their...
How to Decouple Threads in SystemVerilog
Killing a task in SystemVerilog is relatively easy using the kill() method from the process API. Usually, when we kill a task, we also want to terminate all of its “sub-tasks” it called. But this is not...
The Hidden Feature of vr_ad: Gray Zone Comparison
Verifying RTL updatable registers (e.g. status registers) can be very difficult due to factors like slight desynchronization between model and DUT or different sampling points for the register value. Register reads in...
SystemVerilog Tip: How to Do Logging in UVM
UVM comes with a great messaging system which can be easily controlled with simulator commands. Some of these commands are making use of an ID which can be assign to a message. Unfortunately, UVM does not allow us to...
How to Miss Events in Specman
In ‘e’ language events are heavily used for all kinds of jobs, from coverage collection, to TCMs synchronization or even passing data between two entities (a reminiscence from the times when the concept of...
How to Handle Data Coming From Parallel Threads
It is quite common for a DUT to have two or more interfaces from which, independent monitors, will send data to a scoreboard in the same simulation time. Because this is done from parallel threads, the order in which...
How to Startup vr_ad e Library
In this post I will describe all the steps I take to startup the vr_ad register model, implemented in e language. If you do things differently please share your view in the comments section below. If you want to...
The Strange Ways of Specman’s Return Statement
‘e’ language is an Aspect Oriented Programming (AOP) language with a lot of awesome features. One of this features is the ability to extend methods with one of the following statements: is also is first is...
How to Use UVM Callbacks With Configuration Fields
In computer programming, a callback is basically a function which you can pass to some existing code to be called at some specific event. UVM offers all the pieces of the puzzle to easily implement callbacks in any...