Stepping through code and examining data is one thing, but observing the application in real-time and tracing program flow and data accesses reveals a lot more about an application’s behavior. Tanto Port Trace records all trace information transmitted by a microcontroller’s On-Chip Debugging Support. This normally includes details about branches, accesses to selected variables and sometimes information on task switching in real-time operating systems. With some chips, it’s possible to trigger on the occurrence of particular events in real-time. The HiTOP user interface transforms this raw information into an easily read symbolic high-level language representation. As expected, Tanto Port Trace is universal hardware that can be used with a great variety of microcontrollers.