The TerraONION software suite and menu system are sensitive to file integrity.
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Some converters require you to insert a Japanese cartridge into a secondary slot or a "key cartridge" to disable the CIC. Modern "top-only" converters have solved this. The TerraONION software suite and menu system are
: Part of the bsnes emulator project, this tool is highly regarded for cleaning ROM collections and ensuring they meet modern emulator standards. smc to sfc converter top