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The information on Groklaw is not intended to constitute legal advice. While Mark is a lawyer and he has asked other lawyers and law students to contribute articles, all of these articles are offered to help educate, not to provide specific legal advice. They are not your lawyers.

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Norden used to use one... | 343 comments | Create New Account

Comments belong to whoever posts them. Please notify us of inappropriate comments.

These days, a PIC will do low-latency interrupts in a single chip

Authored by: Anonymous on Friday, June 21 2013 @ 08:05 PM EDT

There are radiation hardened component for most or all chips used in the PDP-11.
The only exception might be the LSI-11 chips like J11, but the Russians might
still make some.

[ Reply to This | Parent | # ]

Norden used to use one...

Authored by: jesse on Saturday, June 22 2013 @ 07:21 AM EDT

A radiation hardened PDP-11/34, with some interfacing extensions.

If I remember right, it was used in some fighter aircraft around 1980.

[ Reply to This | Parent | # ]

There is no reason for rad-hard in this application

Authored by: jrl on Monday, June 24 2013 @ 09:48 AM EDT

What possible reason is there for the controllers to be
in a radiation environment? Particularly if they
are clunky systems like a PDP-11, a pretty big target
for a high-energy proton. The trick is to use cables and
actuator rods and stuff, and put the compute behind a
big bunch of shielding.

No matter how rad-hard you make it, it only drives down
the frequency of mishaps. Anything more than zero is too
much.

[ Reply to This | Parent | # ]

There is no reason for rad-hard in this application - Authored by: albert on Monday, June 24 2013 @ 10:38 AM EDT

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