> I have an ipaq 3630 and mame works fine but when trying to press 2 keys at the
> same time, e.g jump and run, it will not work. Have tried latest versions and
> older vesions. \my friends 3970 works fine with pressing both at the same time.
This is a know hardware bug with the iPaq 3600 Series Devices. The device does not accept multiple button presses. The only workarounds were:
1. Buy a gamepad addon device,
2. Set the Action button (pushing the gamepad center) to Fire button 1 and program both run and jump (or 2 moves simultaniously) for 1 button.