[smoorke]

Using uae-configuration to read win32.cpu_idle when the cpu idle slider is all the way to the left returns no value and quits with a warn.
Also using uae-configuration to set the cpu idle slider to the far left is not handled correctly as the value to do so with win32.cpu_idle is n/a.
I tried using a bunch of diffrent values
lower ones gave not enough % on the cpu meter while the really high values coused random slowdowns and jerky mouse movement

There are probably more quirks with uae-configuration and other uae variables but i havn't gotten around to testing everything yet