Verilog Vs SystemVerilog :What should I learn first is a common question among hardware engineers and VLSI designers. Well ,the answer completely depends upon your goals, background, and the industry you want to work in.
In this article I will try you to give a clear picture of what should you learn first Verilog or SystemVerilog, depending upon your goals and targets.
Prerequisite: You must know what your interests are , and where do you want yourself in your professional career.
🔹 1. Understanding the Differences between Verilog and SystemVerilog
| Feature | Verilog | SystemVerilog |
|---|---|---|
| Type | Hardware Description Language (HDL) | HDL + Hardware Verification Language (HVL) |
| Purpose | Used for RTL design (register-transfer level modeling) | Used for both RTL design and verification |
| Data Types | Supports only reg, wire, and integer types | Rich data types (bit, logic, struct, enum, class, etc.) |
| Concurrency | Uses procedural and continuous assignments | Adds new concurrency features like fork-join |
| Testbench Support | Requires manual testbenches | Provides Object-Oriented Programming (OOP), constraint, randomization, and interfaces |
| Assertions | Not available | Includes SystemVerilog Assertions (SVA) for verification |
| Interfaces | Uses simple wire connections | Supports interface and modport for better connectivity |
Also Read :Understanding the automatic Keyword in SystemVerilog: The Key to Proper Recursion
🔹 2. Who Should Learn What First?
| Your Goal | Start with Verilog? | Start with SystemVerilog? |
|---|---|---|
| RTL Design (ASIC/FPGA) | ✅ Yes | Optional |
| Verification Engineer (UVM/OVM) | ❌ Not necessary | ✅ Yes |
| Beginners in Digital Design | ✅ Yes | ❌ No, too complex |
| Industry/Company Requirement | ✅ Yes (ASIC/FPGA focus) | ✅ Yes (Verification focus) |
Also Read :Digital Electronics for Placements – A Step-by-Step Guide
🔹 3. Learning Path: What Should You Learn First :Verilog Vs SystemVerilog?
✅ Start with Verilog if:
✔️ You are new to hardware design and want to understand digital logic.
✔️ You plan to work on FPGA or ASIC design (RTL coding).
✔️ You need to write synthesizable code for implementation.
🚀 Move to SystemVerilog if:
✔️ You already know basic Verilog and want to improve productivity.
✔️ You are moving into Verification (UVM/OVM, assertions, testbenches).
✔️ You want to work with advanced verification methodologies (randomization, OOP, assertions, functional coverage).
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🔹 4. A Step-by-Step Approach towards Learning
📌 Step 1: Learn Verilog (2-3 Months)
- Basic digital design concepts (Combinational & Sequential Circuits)
- Verilog module, always blocks, blocking vs non-blocking
- FSM (Finite State Machines) and basic testbenches
- Synthesizable vs Non-synthesizable constructs
📌 Step 2: Learn SystemVerilog (3-4 Months)
- Data types:
bit,logic,struct,enum,class - Object-Oriented Programming (OOP)
- Interfaces & Modports
- Randomization & Constraints
- Assertions (SVA)
- Coverage-driven verification
🔹 5. What the Industry Prefers between Verilog and SystemVerilog ?
🔹 FPGA & ASIC Design Engineers → Verilog first, then SystemVerilog for efficiency
🔹 Verification Engineers (UVM, OVM) → SystemVerilog first, then UVM for testbenches.
🎯 Final Verdict: Verilog vs. SystemVerilog
💡 If you’re a beginner in RTL design → Start with Verilog, then move to SystemVerilog.
💡 If you want to work in verification → SystemVerilog (UVM) is a must, but basic Verilog knowledge helps.
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