3 ms·

I'm not sure "arm-core-disabled-by-fuse" is gonna be sufficient to persuade arms legal department to stop charging royalties...

• axoltl 2y ago
  That's actually a super common way to handle licensing in hard IP. You don't want to spin different revisions of a chip with and without the IP, that's expensive. So you build in fuses to permanently disable the IP. This happens a lot with hardware video encoder/decoder blocks.
  • mschuster91 2y ago
    Or you do it the other way around in software - remember the Pi 1/2 era where you had to buy separate licenses for MPEG/h264 HW decoders, tied to the Pi's serial number?
    • sylware 2y ago
      That's why the fuse, with proper sales accounting, is so much important.