VIP architecture, scoreboards, compliance suites, assertions, coverage, waveform-first debug, and signoff-quality protocol closure.
Start with the topic hub to learn the contract.
Use mechanism and reports pages to connect rules to metrics.
Use debug and worked-example pages for interview and on-call practice.
Close with checklist and PPA impact before signing any change.
vip-and-agent-architecture/ — VIP & Agent Architecture
scoreboard-and-checker-strategy/ — Scoreboard & Checker Strategy
compliance-and-coverage-plan/ — Compliance & Coverage Plan
protocol-waveform-debug/ — Protocol Waveform Debug
Verification closes the gap between 'works in directed test' and 'legal under all stressed traffic'.
VERIFICATION CLOSURE LOOP
spec clause -> test -> assertion -> coverage -> waiver -> signoff
^ |
+--------- gap found --------+COVERAGE vs ESCAPE RATE
escapes
|*
| *
| *
| ** <- knee: more random helps
| ****
+----------------> constrained-random depthcompliance pass rate
coverage closure
scoreboard mismatch rate
assertion fire count
waiver log
Block passed VIP compliance but chip failed: system test omitted cross-master ID reuse through a bridge. Scoreboard key did not include upstream port ID.
If VIP pass but silicon fail, check integration assumptions.
If scoreboard noisy, fix key (ID+port+addr).
If coverage plateau, add compliance gap analysis not more repeats.
Ask: what is the first transaction that deviates, and which spec rule does it test?