# SystemVerilog

> hardware description and hardware verification language

**Wikidata**: [Q1387402](https://www.wikidata.org/wiki/Q1387402)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/SystemVerilog)  
**Source**: https://4ort.xyz/entity/systemverilog

## Summary
SystemVerilog is a unified hardware description and hardware verification language used to describe, model, and verify electronic systems. Based on the Verilog hardware description language and influenced by VHDL, it was standardized by the Institute of Electrical and Electronics Engineers (IEEE) in 2002. It functions as a programming language that supports both static and weak typing disciplines.

## Key Facts
- **Inception:** SystemVerilog was established in 2002.
- **Designer:** The language was designed by the Institute of Electrical and Electronics Engineers (IEEE).
- **Classifications:** It is categorized as a hardware description language, a hardware verification language, and a programming language.
- **File Extensions:** Source code files use the extensions `.sv` and `.svr`.
- **Paradigms:** It supports structured programming and object-oriented programming.
- **Typing Discipline:** The language utilizes both static typing and weak typing.
- **Influences:** SystemVerilog was influenced by Verilog and VHDL.
- **Related Entities:** It is utilized in designs such as the SweRV RISC-V processing core.

## FAQs
### Q: What is SystemVerilog used for?
A: SystemVerilog is used primarily for the description and verification of electronic hardware. It serves as both a hardware description language (HDL) for defining circuit behavior and a hardware verification language (HVL) for testing those designs.

### Q: What languages influenced SystemVerilog?
A: SystemVerilog was directly influenced by Verilog and VHDL. It builds upon the foundations of these languages to offer enhanced features for design and verification.

### Q: What are the file extensions for SystemVerilog?
A: SystemVerilog source code files typically use the file extensions `.sv` and `.svr`.

### Q: What programming paradigms does SystemVerilog support?
A: SystemVerilog supports structured programming and object-oriented programming paradigms, facilitating complex hardware verification environments.

## Why It Matters
SystemVerilog plays a critical role in the modern semiconductor industry by addressing the increasing complexity of integrated circuit design and verification. Before its standardization in 2002, engineers often had to use separate languages for designing hardware and verifying it. SystemVerilog consolidated these distinct needs into a single, unified standard managed by the IEEE.

Its significance lies in its ability to support advanced programming paradigms, such as object-oriented programming, within a hardware context. This capability allows engineers to create reusable, abstract test benches that can effectively verify complex processor cores, such as the open RISC-V SweRV. By combining the capabilities of Verilog and influences from VHDL with high-level verification features, SystemVerilog reduces the risk of hardware bugs and accelerates the development timeline for electronic systems. It remains a foundational tool for ensuring that modern chips function correctly before physical manufacturing.

## Notable For
-   **Unified Language:** It is distinct for combining hardware description (design) and hardware verification (testing) into a single language standard.
-   **IEEE Standardization:** It is an official standard designed by the Institute of Electrical and Electronics Engineers, ensuring stability and wide industry adoption.
-   **Hybrid Typing:** It uniquely supports both static typing and weak typing, offering flexibility in how hardware signals and verification data are handled.
-   **High-Level Abstraction:** It introduced object-oriented programming features to hardware development, a significant evolution from earlier Verilog standards.

## Body
### Origins and Standardization
SystemVerilog was inceptioned in 2002 under the design authority of the Institute of Electrical and Electronics Engineers (IEEE). It was developed to extend the capabilities of existing hardware description languages, specifically integrating features from Verilog and VHDL to create a more robust environment for chip design.

### Technical Characteristics
The language is identified as a hardware description language, a hardware verification language, and a general-purpose programming language. It adheres to a mixed typing discipline, supporting both static and weak typing. This allows for rigorous definition of hardware signals while maintaining flexibility for high-level verification scripts.

SystemVerilog supports multiple programming paradigms, including:
*   Structured programming
*   Object-oriented programming

These paradigms allow for the creation of complex, modular code suitable for verifying sophisticated hardware architectures.

### File Formats and Identification
SystemVerilog source code is identified by specific file extensions. The standard extensions associated with the language are `.sv` and `.svr`. These files contain the instructions used to describe hardware behavior and verification logic.

The language is tracked under various academic and library identifiers, including:
*   **Freebase ID:** /m/07lwvb
*   **Library of Congress Authority ID:** sh2012002819
*   **Microsoft Academic ID:** 2778681875

### Application and Relations
As a language for communicating instructions to a machine, SystemVerilog is a critical tool in the development of processing cores. It is specifically related to the **SweRV** architecture, which is noted as the first open RISC-V processing core design and its descendants. This relationship highlights SystemVerilog's utility in cutting-edge, open-source hardware development.

## References

1. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
2. Freebase Data Dumps. 2013
3. Quora
4. National Library of Israel Names and Subjects Authority File