I was wondering: how can i analize the source code of a chip or any programmed piece of hardware? for example people who managed to find a 0day in the old version of nintendo switch; how did they find the code to analyze and find the bug? i would really like to get involved i 0days or reversing, and also would like to, i dont know, for example find an exploit/ a bug in my own home router/ in my calculator and stuff like that. I think knowing how the hardware is coded and how it works and have control on it is much more interesting than high level stuff.
I googled something but did not manage to get any information, maybe i'm just not enough good at googling :\
sorry if it may sound like a dummy question but i do not know very much about it.