<p><span class="h-card" translate="no"><a href="https://mastodon.social/@whitequark" class="u-url mention">@<span>whitequark</span></a></span> yes. I implemented a step debugger, breakpoints and memory inspection when we designed the processor originally. In reality the code is all real time dsp, so debugging is mostly done in rtl/cocotb sim where we just spit out a trace file based on watching a variable and/or program counter. Or we do it in hardware using telemetry over a gigabit serial link where we can stream out whatever state we need to monitor. Or we use one channel of the audio output to monitor an internal node.</p>