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FSM & RTL
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Verification
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VHDL / Verification

assert equality

Learn assert equality in VHDL through a focused explanation, a dedicated construct-specific example, an engineering boundary, and a mastery check.

10 min read • Advanced

assert equality is an atomic VHDL topic inside Verification. This lesson focuses on how the assert equality construct is written, what it changes, and when it is the right tool.

Trace the example line by line. Identify the exact syntax for assert equality, the input state before it runs, and the resulting value, control flow, database state, hardware behavior, or runtime effect afterward. Neighboring lessons use different constructs rather than renamed copies of this one.

Topic-specific example

vhdl-08-04-assert-equality.vhd
vhdl Try It Live 
assert result = expected report "mismatch" severity error;
Edge case / engineering note

For assert equality, test the boundary that belongs to this exact feature rather than a generic failure case. Check invalid or empty input, NULL/unknown state, numeric limits, transaction or exception behavior, synthesis/runtime constraints, ownership/permission rules, or backtracking/control-flow effects where they apply.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

assert equality Mastery Check →
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