68060ec vs 68030

[Karlos]

What prevents a 68060 w.o an MMU or FPU from running 68030 code?

Nothing, provided you have the necessary exception handlers installed to emulate the missing integer instructions (32x32->64 bit multiply, bitfields and so on).

[Karlos]

And that you don't require any memory protection support. Exception handler for MMU is quite harder.

In essence the code can run provided that it won't use any of the missing functionality.

True, but I assumed (perhaps falsely) that this was a given.

[Karlos]

Hmm, perhaps it was something else I was thinking of?