My understanding is that it's based on the LC I architecture, which is affected by this limit (and so to are various other machines which are based on it, of course).

If the limit can be lifted, great! But I'm not totally sure it's as simple as changing ROMs with a later system (though that might enhance other aspects of the machine, I suppose). Somehow, I think It could be some sort of limit that's built into the hardware.

We might have to consider not only changing the ROMs, but perhaos also replacing the MMU (if it's a separate chip) or whatever it is, and rework the board so that it'll work (if that's even possible).

...goes back to do more homework...

c