well, but AmigaOS already had this... remember PowerUp cards? there was 68k as a main cpu, and PowerPC was used from the beginning as just some kind of coprocessor, to make some computations faster. with a small list of new exec.library functions (like LaunchOnOtherCpuAsync(function,args)) would be enough for simple SMP :)

but these are really just my ideas as I know, how cpu 68k and ppc works, then i don't see this as a big issue.

bye, MarK.