New project for the benefit of all classic computing!

[commodorejohn]

So how do you load a program from disk then ? Because during load the CPU considers it as data but during execution as instructions.
So I think you external DMA hardware that is then also aware of the user data/instruction data split.

Naturally. The organization would work however you want it to work, since you'd be rolling your own MMU (or adapting an existing one) in any case; all the CPU cares about is that it gets instructions when it asks for instructions, and data when it asks for data.

[commodorejohn]

Yes, but the Amiga was designed around the 68000, not the other way around.