Debugger Trace Technology Trends
With the introduction of higher speed RISC processors, running at frequencies over 100MHz, the use of on-chip cache, RAM, or FLASH memories has become necessary in many cases. This often results in much of the processor's bus activity being invisible to the external pins of the processor. Hence, the traditional method of collecting trace information is no longer viable. This being the case, one might wonder if the days of the trace buffer and even the in-circuit-emulator, might pass into ancient history.