Can psp go be hacked? what can it do?

i used to have one of those big ol' fat psps back in the day with custom m33 firmware. well long story short the screen cracked and it broke and i'm about to purchase a psp go. but, i've had a lot of mixed answers when i ask if it is hackable or not. some people say yes, no and kind of. heres what i'm asking. can it be hacked to the point where i can play gba,gbc,nds,n64,snes emulators, playstation 1 roms, and psp iso's? if so what do i need to do and how to i go about doing it. if this isn't possible i'll probably get a psp slim or another fat one but i love the psp go its so tiny lol.