VHDL component instantiation syntax — label, colon, and entity reference Evaluate the statement: “Each VHDL component instance is given a name followed by a semicolon and then the name of the library primitive.”

Introduction / Context:Accurate VHDL syntax is essential for structural designs. Instances are labeled and associated with entities or components via a specific form that uses a colon, not a semicolon, and proper library/entity references. Misstating this leads to compilation errors and confusion about libraries and primitives.

Given Data / Assumptions:

• We are instantiating an entity or component in VHDL.
• Typical forms include: label : entity work.my_ent(arch) port map(…); or label : my_comp port map(…);
• Library/USE clauses make entities visible, but there is no “name followed by a semicolon” pattern between label and entity.

Concept / Approach:The correct syntax is label : entity library.entity_name (optional architecture), or label : component_name if using component declarations. The colon separates the instance label and the design unit being instantiated; a semicolon terminates the entire statement at the end, not between label and entity.

Step-by-Step Solution:Write a label (e.g., u1).Place a colon then the entity or component name (e.g., u1 : entity work.foo).Provide generic map/port map associations.Terminate the statement with a semicolon after the port map, per VHDL syntax.

Verification / Alternative check:Compile a small structural example; the compiler rejects the “label; entity …” form and accepts the “label : entity …” form.

Why Other Options Are Wrong:“Correct” misstates the delimiter. The qualifiers about structural code or configurations do not change the colon requirement.

Common Pitfalls:Forgetting library/USE clauses; mixing component and direct entity instantiation; misplacing the semicolon.

Final Answer:Incorrect