How do I invert the Y axis in Fusion EMU?

[+xucaen]

Hi everyone,

 

I got Fusion EMU set up to play Sega CD games. I recently set up a 3d space shooter CD image, but I can't play it because of the way the Y axis is set up. When I play games like this, I am used to having the "up" steer the plane down, and "down" steers the plane up. The game I am trying to play has this reverse, and I just can not play it. Is there a short cut in the Fusion EMU to invert the Y axis? I have seen this type of thing on other EMUs but couldn't find it in Fusion. Yes, I could remap the buttons so up is down and down is up, and if that is the only way to do it, I'll do it. But I was hoping they had a short cut or setting somewhere to make it easier. Anyone know? Thanks!