It doesn't.
Then it's worthless. The scaling is ignored on the 68000 with no exception. It would crash most of the time later on. The 68k instruction set is designed to be forward compatible but not backward.
There is also the issue of non-byte memory accesses on the 68000. An exception handler can catch this and do the access correctly but it is slow.
We need 68020+ fpgas with AGA+. That's what I'm waiting for.
