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From: Kragen Javier Sitaker <kragen@canonical.org>
Newsgroups: comp.arch
Subject: Re: PDP-10 Styles of addressing
Date: Wed, 02 Sep 2026 13:55:58 -0300
Organization: Primarily biological and memetic
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John Levine <johnl@taugh.com> writes:

> It appears that MitchAlsup  <user5857@newsgrouper.org.invalid> said:
> The PDP-6 and -10 could take an interrupt before
> each address calculation so if an interrupt arrived in the middle of
> an indirect chain, it just started it over when the interrupt returned.
> (...)
> One time when I was supposed to be doing something else I wrote a little
> program that made a longer and longer interrupt chain until the program
> stalled, which told me how often the clock interrupted.

For “interrupt chain” here we should read “indirect chain”, I think?

Kragen