Nerd_1980

I've spent a few hours online searching for software to create my own video game style music. I came across something called Stomper Hyperion which sounds pretty cool but probably isn't exactly what I'm looking for. There HAS to be some kind of software that mimics the sounds made in the old nintendo and sega games of the 1980's, and allows you to create your own music with these sounds. Can anyone help me out?