Low-cost in-circuit debugging

With the rise of low-cost in-circuit debugging capabilities, such as the ARM’s ICE, it’s easy and cost effective to single-step code instruction-by-instruction. Variables can be examined and modified, register contents displayed, memory dumped but, generally only when the target system is stopped. However, many real-time systems cannot afford to be stopped. So, how do you see what’s happening in your system without having to hit a breakpoint? How do you see and monitor the behavior of your system at run-time without potentially interfering and affecting its dynamics?.

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