I wonder what it would take to get the Arduino environment running again on PPC? Older versions were OK, but newer ones not. Is it the version of MacOS that prevents it running, or the CPU architecture? Surely Java should be OK whatever the CPU?
Incidentally, BeOS was a completely different OS from Unix or Linux or MacOS for that matter. Written by a company called Be, Inc.
Oh, and today at the local Linux user group, we had an Elonex mini laptop running Linux, but with a MIPS CPU. Very similar chip to the CPU in the PlayStation, in fact. Would be nice to be able to run the Arduino environment on that type of hardware, too!