the EXT port on the bottom of the N64 was only be used in Japan for the N64DD. It has never served any known purpose on the worldwide market. Here is an explanation of what is was used for “Plugging into the extension port on the underside of the console, it allows the Nintendo 64 to use proprietary 64 MB magnetic disks for expanded and rewritable data storage, a real-time clock for persistent game world design, and a standard font and audio library for further storage efficiency. “ from [https://en.wikipedia.org/wiki/64DD|here]
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the EXT port on the bottom of the N64 was only be used in Japan for the N64DD. It has apparently never seen any known purpose on the worldwide market. Here is an explanation of what is was used for “Plugging into the extension port on the underside of the console, it allows the Nintendo 64 to use proprietary 64 MB magnetic disks for expanded and rewritable data storage, a real-time clock for persistent game world design, and a standard font and audio library for further storage efficiency. “ from [https://en.wikipedia.org/wiki/64DD|here]
'''++@yukaissleepy++'''
the EXT port on the bottom of the N64 was only be used in Japan for the N64DD. It has never served any known purpose on the worldwide market. Here is an explanation of what is was used for “Plugging into the extension port on the underside of the console, it allows the Nintendo 64 to use proprietary 64 MB magnetic disks for expanded and rewritable data storage, a real-time clock for persistent game world design, and a standard font and audio library for further storage efficiency. “ from [https://en.wikipedia.org/wiki/64DD|here]