JDW and ROM switching:
Shouldn't be too hard to implement. Similar hacks were common in the Apple II world in the 1980s to switch the Disk II card ROM or Language Card between different ROMs.
Mac128 and RAM switching:
I suspect that there may be a very simple way to implement this hack, but I'll wait for Tom Lee to comment.
My reservations are that any switch mechanism and associated cables will generate noise on a sensitive circuit. The Apple II hacks were implemented on a much slower computer.
See also: http://www.folklore.org/StoryView.py?project=Macintosh&story=PC_Board_Esthetics.txt&topic=Hardware%20Design&sortOrder=Sort%20by%20Date&detail=medium
Shouldn't be too hard to implement. Similar hacks were common in the Apple II world in the 1980s to switch the Disk II card ROM or Language Card between different ROMs.
Mac128 and RAM switching:
I suspect that there may be a very simple way to implement this hack, but I'll wait for Tom Lee to comment.
My reservations are that any switch mechanism and associated cables will generate noise on a sensitive circuit. The Apple II hacks were implemented on a much slower computer.
See also: http://www.folklore.org/StoryView.py?project=Macintosh&story=PC_Board_Esthetics.txt&topic=Hardware%20Design&sortOrder=Sort%20by%20Date&detail=medium