AFAIR tho im not sure its even 128k, I think disk cards themselves are more like 110k and even then FDS Zelda had separate sides mostly for main menu and saves.

AFAIR tho im not sure its even 128k, I think disk cards themselves are more like 110k and even then FDS Zelda had separate sides mostly for main menu and saves. IOW might have been able to fit in 96Kb or less.