Using Dell Axim 400Mhz, running MameCE v9.5
Was able to load game like '1942', I reconfigure the fire1 button to button3 and fire2 to button4. But whenever I press the fire1 (button3), the game pause, I have to press it again to un-pause and fire.

What's the workaround? Does anyone else see this behaviour?
The fire button used to be pressing the middle of the navigator button (the big circle button in the middle)

Did you ever get it solved?

You have to reconfigure the keys.

Post back here for info.