os 4.0

[Piru]

@A6000

A CISC processor does more work per instruction than a RISC processor so a JIT emulator could interpret several PPC instructions as one or two 68k instructions.

That'd work for only for VERY specific instruction sequences that are very unlikely to occur anyway. So this idea doesn't work, sorry.

Also the PPC runs at only 200/400mhz which is not necessarily that much faster than a 68060 running at 66-100mhz.

It is much faster. PPC does 3-5 instructions per clock cycle. 060 doesn't even do 2 in average, and some instructions take huge amount of cycles.

[Piru]

Of course it is possible. It's just very slow. Because it's so slow, no-one is likely going to bother with it.

x86 has several ppc emulators: qemu, pearpc, softpear, sheepshaver.