> The copy-protection mechanism of the SNES is something I already dig into in my 10NES article. It works by having two chips talking in lockstep. One chip is i

> The copy-protection mechanism of the SNES is something I already dig into in my 10NES article. It works by having two chips talking in lockstep. One chip is in the console, the other in the cart. If the console CIC sees something it does not like, it resets every processor. It was easily defeated for consumers though (but probably not for game producers/editors)... Back then we all had a "backup device" for our SNES: a device you'd plug into the SNES and which had a floppy drive. So we'd "backup" all our games on very cheap 3"1/2 floppies. All that was needed for the system to work was to have one original cartdridge, which you'd plug into the copier, and the device would reuse that cartdridge's CIC chip. https://en.wikipedia.org/wiki/Game_backup_device https://en.wikipedia.org/wiki/Game_backup_device