@amije
Oh sorry, a little misunderstanding. In fact, that's an interesting idea - I will try it out immediately and report.
But it should work. I was always looking for some kind of burn-in test where I have both 68k and PPC running at 100% CPU utilization at the same time.
Update: Both work at the same time - even in the same window! The window is split and I have the 68k core running in the upper half and the PPC core running in the lower half of the window. Neat.