Yes, one way to get virtual memory with 68000 machines and 68020 machines
without a PMMU is to add a 68030 accelerator board. Warning: adding a
68030 accelerator board to your 68000- or 68020-based system does not
guarantee that one of the third-party virtual-memory products will support
the upgrade you have added.
If virtual memory support is your goal, verify with the board manufacturer
that their product works with your virtual-memory products. Likewise,
check with the virtual-memory product's manufacturer to verify that their
product works with your 68030 accelerator board.