Is my parameter local?

Understanding parameters and localparams in SystemVerilog design

This is an easy foundational question on SystemVerilog module design that tests whether you grasp the scope and visibility rules governing compile-time constants. It comes up regularly in hardware design interviews because the distinction shapes how you structure reusable, parameterizable RTL.

The question probes your understanding of visibility across module boundaries—specifically, which declarations can be overridden or inspected from outside a module, and which are private to its internal implementation. Getting this right is essential for writing modules that other designers can instantiate and configure correctly.

• Module instantiation and port parameter passing
• Scope and encapsulation in RTL design
• Compile-time constant resolution