Okay, I'm gonna tell you how to do a cheat "jump" sound- you'll need a chorus pedal to thicken it up, but here goes...
Initialize a voice you hate. It's under utility, I believe. then go back to play/perform.
Set the algorithm to 8
Set Operator 4 feedback to 6
set all operator output levels to zero EXCEPT operator 4. Turn its output all the way up.
Now save the patch. You have a sawtooth wave.
It won't sound like an Oberhiem OB-Xa, but its a good start.
[This message has been edited by Justin Gazda (edited 08-09-2006).]