Im new in speedruns and im using sne9x, but i dont understand this: "More specifically, no letting the instruction pointer hit anywhere but ROM, open bus, and the intended RAM area ($7F8000-$7F8182), and no modifying the intended RAM area"

i dont know how to do it, someone can explain me (i use snes9x v1.54)

Do not worry, just play normally on a good and allowed snes9x version - like yours - and this will be fine :)

Ty, other question, the game requires something to take the cloud, cause' i always had taken the orb but the cloud never, and the most time the game crashes or rarely it seems that works but none item appears in the slot

The game crashes if Mario gets hurt. I never managed to take the cloud on the emu version - it lags a lot on my computer ; kinda nightmare -, but did it on the snes. Harder than the orb because you need be faster.