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The system function $random provides a way to generate random numbers in Verilog. Each time it is called, the function returns a new 32-bit random number, which is a signed integer that can be either positive or negative.
SystemVerilog can be considered an extension of Verilog (the most popular HDL), and it makes sense to verify a Verilog design in SystemVerilog. Also SystemVerilog supports OOP which makes verification of designs at a higher level of abstraction possible.
Purpose: Verilog is used to describe digital circuits and systems, while C and Java are used to write software programs that run on computers. Syntax: Verilog has a different syntax than C and Java, as it is designed to describe the behavior of digital circuits rather than the execution of software instructions.
It is a standardized methodology for verifying digital designs and systems-on-chip (SoCs) in the semiconductor industry. UVM is built on top of the SystemVerilog language and provides a framework for creating modular, reusable testbench components that can be easily integrated into the design verification process.
A callback is useful because it allows a flexible and modular way to modify or extend the behavior of a system without altering the original code. Callbacks decouple the code that triggers an action from the code that defines the action itself.
SVA or SystemVerilog Assertions provides a syntax for expressing assertions that describe the expected behavior of a design, allowing for direct verification of its correctness. Assertions expressed using SVA can be used to verify various types of design properties, such as proper data flow, correct timing constraints, and correct ...
Assertion-based coverage is a method of measuring the quality of functional verification of digital designs using formal verification techniques. It involves writing assertions, which are formal specifications of the expected behavior of the design, and then analyzing the coverage of those assertions over the design.
Functional coverage is a measure of what functionalities/features of the design have been exercised by the tests. This can be useful in constrained random verification (CRV) to know what features have been covered by a set of tests in a regression.
It is a set of rules, symbols and processes that allow us to count, measure, and calculate numerical quantities. The most common number systems are the decimal system, which uses the digits 0-9, and the binary system, which uses only 0 and 1. Other number systems include octal, hexadecimal, and Roman numerals.
A digital element such as a flip-flop can be represented with combinational gates like NAND and NOR. The functionality of a flip-flop is achieved by the connection of a certain set of gates in a particular manner. How the gates have to be connected is usually figured out by solving K-map from the truth table.
