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Provably correct hardware not possibleProvably correct hardware not possiblePosted Nov 23, 2011 12:52 UTC (Wed) by pjm (subscriber, #2080)In reply to: Provably correct hardware not possible by Cyberax Parent article: Interview with Andrew Tanenbaum (LinuxFr.org)
> Digital circuitry is _digital_. It's specifically designed to not care about small deviations in voltage levels.
In practice, it's quite common for PC hardware not to behave according to spec (bits flipped in transit): common enough that I've noticed it myself on more than one machine, and common enough that I'm quite surprised that you apparently haven't noticed it.
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Provably correct hardware not possible Posted Nov 23, 2011 15:28 UTC (Wed) by Cyberax (✭ supporter ✭, #52523) [Link]
These are defects. Barring really bad design, you can't predict them or use them to reliably exploit something.
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