96 GT manual tranny

I have a 96 gt and was driving when all the sudden I lost every gear but first. 1st, 2nd, and neutral all engage 1st gear. For the other gears, the car seems like it wants to go, but doesn't move. In reverse it doesn't move either, just bogs down like it's trying to go forward and reverse. Is there anyone that may help diagnose the potential problem from this description of the problem?