PDP-11/45 RSTS/E boot problem

Liam Proven lproven at gmail.com
Fri Feb 15 09:29:20 CST 2019

On Fri, 15 Feb 2019 at 14:59, Paul Koning <paulkoning at comcast.net> wrote:
> Speaking of sounds made by machines, there is a famous security paper from a few years ago in which researchers read the encryption keys out of smartphones by listening to the sounds made by the device while it was execution the crypto algorithms.

... wow.

> These hardware wizard stories remind me of a legendary repair wizard, non-computer industrial devices I think.  He was called in to fix a tricky problem at the customer site.  Studied it for a while, took out a small hammer, whacked the device at some spot, and reported "fixed".  He then sent in a bill for $500.
> Customer challenged that with a demand to itemize the work.  The itemized bill came back like this:
>         1. Applying impact to the device: $5
>         2. Knowing where and how to apply the impact: $495

110 years old, and still apt.


I first encountered it in the form of one of the AI Koans. I guess
these are probably familiar to all here, but in case:


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