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> Or are all the extensions patented as well Yes. So, if you want to reimplement a CPU from 1999, you will probably be fine without any kind of license. If you
by bdowling 6y ago
> Or are all the extensions patented as well
Yes. So, if you want to reimplement a CPU from 1999, you will probably be fine without any kind of license. If you want to add features or use new methods, however, you may run into infringement issues.