4 AA batteries?

[kirbyfanner]

So i've seen that people can run the SNES and psone screen off of 4 AA batteries. It makes sense, cause if one double A is like 1.5 volts, 4 in series would be six. The only thing is that 6 volts doesnt go in the 7805 Regulator, so how can i wire this to my devices that take 5v? thanks!