If you mean dump the cart and then immediately run the dump, that is perfectly possible, though in some cases dumping the cart requires prior knowledge of the carts internals (IIRC there is a big database of known NES carts and how to dump them).
If you mean dump the cart and then immediately run the dump, that is perfectly possible, though in some cases dumping the cart requires prior knowledge of the carts internals (IIRC there is a big database of known NES carts and how to dump them).