Learn VHDL - Course path, FPGA exercises and FAQ

What it is for

VHDL in short

VHDL describes digital circuits so they can be simulated and synthesized for FPGAs or ASICs. On this site, the goal is mainly to learn how to turn an idea or schematic into code verified by simulation.

Describe a circuit

Simulate its behavior

Prepare FPGA synthesis

Learning plan

The right order to learn

The goal is not to move fast. The goal is to build enough foundations so exercises feel logical, not mysterious.

01Review digital logic basicsLogic gates, registers, clock, reset, combinational and sequential logic. This is the base before writing code.Open
02Read the VHDL introductionJust enough to understand the vocabulary: entity, architecture, signal, simulation, synthesis.Open
03Take the related quizIf the vocabulary is unclear, exercises quickly become frustrating. The quiz is a quick checkpoint.

Site method

A simple loop: read, check, code

Each step should support the next one. If an exercise fails, go back to the related lesson, then rerun the simulation.

1. Read

A short lesson to understand one specific concept.

2. Check

A quick quiz to avoid coding with an unclear concept.

3. Code

An editor exercise validated by GHDL simulation.

4. Continue

Progress tracking keeps the path clear up to harder exercises.

VHDL lessons

All chapters

The full list stays here so you can jump directly to a specific chapter.

FAQ

Frequently asked questions

What is VHDL used for?

VHDL is used to describe, simulate and synthesize digital circuits: combinational logic, registers, state machines, communication interfaces and reusable blocks for FPGAs or ASICs.

Why learn with an FPGA?

An FPGA is reconfigurable. You can fix the design, rerun a simulation, synthesize, then test on a board without manufacturing a final chip.

Where should I start on the site?

Start with digital logic basics if needed, then the VHDL introduction, the related quiz and beginner exercises with GHDL simulation.

Do I need an FPGA board?

Not to start. Site exercises use browser simulation. A board becomes useful later, once the basics are solid.