UVM Coding Practice · Senior

config_db Hierarchical Paths

set/get paths from top to agent.

Interview prompt

Push apb_vif from top to agent driver — exact set/get strings.

diagram

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)

systemverilog

// top
uvm_config_db#(apb_vif)::set(this, "env.agent*", "vif", vif);
// agent build
uvm_config_db#(apb_vif)::get(this, "", "vif", vif);

Common pitfalls

Path typo.
get before set in same phase wrong hierarchy.

Practice this lesson