Interview prompt

DUT has read and write channels. Sketch one scoreboard with two compare paths.

WHITEBOARD CHAIN

1. DECLARE    interfaces / types / ports you need
2. SKELETON   class extends + utils macro + key methods
3. MECHANISM  fill one critical method while narrating
4. PITFALL    name one bug juniors make on this pattern
5. TEST       how you would smoke-test the component

Reference sketch (≤40 lines)

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uvm_analysis_imp_rd #(txn, sb) rd_imp;
uvm_analysis_imp_wr #(txn, sb) wr_imp;
txn exp_rd[$], act_rd[$], exp_wr[$], act_wr[$];
// separate compare_head per stream

Common pitfalls

• Mixing read/write in one FIFO without opcode tag.

• Cross-stream ordering assumed when independent.

Smoke test (5 minutes)

• Directed read then write; verify separate queues drain.