Re: Can a Pico debug a Pi?
I'm glad that you are looking to clear up anything confusing in the article, but you could still do better than to misrepresent what was said in these comments in order to make your point:
>> As far as I can ascertain, Raspberry Pis don’t have an SWD
> Yes, they do: you can use a few pins of the GPIO interface to talk SWD to another device
Hmm, sorry, but I think it was quite clear that was only asking about using SWD *INTO* the R'Pi, as he wrote (past the bit you quoted)
>> Raspberry Pis don’t have an SWD, while Raspberry Picos do. So you can’t use a Pico to debug a Pi
> if you run OCD software on a Pi Zero/3/4 you can debug another embedded type device directly, a Pico or Teensy or Arduino or whatever, without using a separate debug probe.
Yup, no-one disputes that.
> No, you can't probe a big Pi, because it's not an embedded device
Doesn't need to be embedded to be probable! Probing it will probably make a right mess of the OS timing, so you don't want to use a probe normally - unless you are trying to get into the Linux kernel and related bits (kernel modules). Which is what the other article I linked to is all about: