Primary debug scenario

Symptom: AXI write timeout after 1000 cycles. VIP shows AW sent but no B response. Need to find why.

Triage steps

1. Waveform: AW channel — was AW accepted (awready)?

2. W channel: did all W beats complete with WLAST?

3. If W incomplete: find which beat stalled and why (wready?).

4. If W complete but no B: check slave state machine.

5. Correlate with VIP monitor timestamp for AW and W events.

Common pitfalls

• Debugging the timeout without finding first stalled channel.

• Loading every signal — focus on relevant channels.

• Not correlating waveform with VIP transaction log.