But when your 68K has multi-core, can run at over 2 GHz, can run 64 bit code, or address the amount of memory modern processor can, let me know.
The AmigaOS used to be efficient enough and scalable enough to run on a 68000@7.14MHz with 256kB of memory. Now we need a 2 GHz clock speed and more than 4 GB of memory?
Sure, port Amiga OS4.1 to the 68K, where it will be too slow to run properly.
And once OS4.2 is released, it will be obsolete.
Different build scripts and conditional preprocessor directives would be necessary in some cases but most of the high level OS components should compile as is. I would hope AmigaOS 4 doesn't use a bunch of GCCisms as other compilers may generate better quality code for the 68k.
AND X64 IS the eventual goal, but not right now.
I hope not but it would be good to make the AmigaOS more portable in case of a processor switch. IMO, moving to x86_64 would divide what is left of the Amiga even more, a 64 bit little endian AmigaOS with SMP support would not be compatible with anything and the Amiga would lose most of what is left of its uniqueness.
Real 68k is ancient crap slower than first pentium.
My g4 is still faster than the slowest new PC laptops.
The 68060 is on par with a Pentium and the G4 is on par with a Pentium III. The only new laptops/netbooks as weak as a G4 are Atom or ARM based. Any feel of a G4 being faster than modern PC laptops is probably due to a more efficient OS. If you want to further talk hardware, please use the thread Eliyahu created for that purpose.
http://www.amiga.org/forums/showthread.php?t=69986&page=4