LX Control on a Mac

Well - we are getting there. I just thought I'd update my readers on my progress of getting the Enttec DMX usb widget to work on a mac. Funnily enough, it's not that hard.
I have a little C program that controls my Martin Mania SCX500 quite well. Well - it does a couple of things, fades the light up from 0 to 100%, and pans from 0,0 to 256,256. It also can set random positions, intensity, gobo and colour.
Biggest challenge so far - update rate. Believe it or not, if you try and update the DMX widet 1000 times a second, the driver resets the widget and freezes your output. Solution? usleep for 10000 microseconds. This creates a smooth, stable and accurate DMX playback!
Will write more... have many questions and thoughts...