Using codes on the emulator

[truthkey]

What the thread says. I need to know how to use codes on an emulator, i mean, using codes for hacking the game.
I'm learning how to hack and i need to know, what do i need?

Thanks in advance. (I don't know if this is plugin related, if not, someone move it to the right place please)

[Godwin]

We don't move things to the right place from this section for a reason.