If Aaron is willing and you're willing, I wonder if there would be any interest in defining an "mFloat" data type. On platforms with hardware FP, it would be a #define to float. On platforms without hardware FP, it would fall back to a core class that overloads the necessary operators to implement decent fixed-point. Thoughts?

Couriersud: you're correct of course, but e.g. Dig Dug runs quite well on the SDLMAME port someone did for the Wii, which is a 730 MHz PowerPC. So I think non-discrete sound games should be capable of running well on the sort of ARM hardware under discussion.

Of course. Anything e.g. using a 8910 should work. I just wanted to inject some "expectation-management" into this thread in order to avoid that people later wonder why e.g. Donkey Kong does not perform on such a build.