I have one of those yaroze things. I had all sorts of plans for it. Until I realized that the memory on the thing was identical to the size of the normal in store ones and getting at the CD for extra storage was basically broken at the SDK level. That made debugging 'interesting'. Even splurged for the codewarrior dev kit. It was a decent step down in tooling and memory that I could get on other platforms. Kind of fun for a bit.