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foone🏳️⚧️ on Twitter: "So a really neat feature of the Famicom Disk System was the copy protection, which was physical. See how some letters of NINTENDO are inset? There's matching tabs in
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Hardcore Gaming 101 Presents: The Complete Guide to the Famicom Disk System: Kalata, Kurt, Hubbard, Dustin: 9781546928317: Amazon.com: Books
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