Setting up my MAME machine, and can't get the controls to respond.  I am using an older PS/2 jpac that has jumpers for frequency and MAME/Alt.  I have a jumper on the MAME (bottom and middle left pins).  
I am using MALA as my frontend, and works fine with a keyboard.  I just can't get the joystick and buttons to work.
What am I missing?
Thanks!
Theron