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as each chip manufacturer who licences/implements the esp32 riscV architecture is able to modify it to suit requirememts, all things are possible, and generally are.

undocumented op codes are common across mamy mcu and mpu.

not familar with the jade hardware, but my common hardware hacking go to is that most electronics hardware development is lazy and if they used a reference / dev hardware kit from a 3rd party and not the manufacturer then its going to be open to all sorts of shit.

ESP32 is so open with 3rd party hardware poorly implemented.

a good read of the manufactures documentation compared to dev docs usually turns up somethimg as a starting point.

love to see what you turn up.