The Unix Heritage Society mailing list
 help / color / mirror / Atom feed
From: Jon Steinhart <>
Subject: Re: [TUHS] Encoding an ISA: Random Logic vs. Control Stores
Date: Tue, 30 Nov 2021 15:07:29 -0800	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <Yaabjh0kjYlDq7N5@beryllium.local>

Humm writes:
> Quoth Jon Steinhart:
> > writes:
> >> Can someone please explain why it's called "random" logic? Discrete
> >> logic I understand (more or less), but I've not heard the term "random"
> >> used in this context before now.
> >
> >Well, as a recovered random logic designer, I think that the name comes
> >from there being no particular structure to the logic.  Many parts of
> >logic design are very regular, think memory.  But that regularity doesn't
> >exist when, for example, decoding irregular instructions.
> Now that’s a “random” definition.
> -- 
> Humm

OK, I'll try again.  For anybody familiar with Portland, Oregon, it's the
difference between driving in Northwest where there's a rectangular grid
numbered in one direction and alphabetical in the other, and approaching
the Ross Island Bridge from the west side which appears to be designed by
someone following a goat while tripping their brains out.  One can address
Northwest Portland quite easily unlike getting onto the Ross Island Bridge.

  reply	other threads:[~2021-11-30 23:10 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-30  8:07 pbirkel
2021-11-30 15:19 ` Ron Natalie
2021-11-30 15:30   ` arnold
2021-11-30 15:39     ` Ralph Corderoy
2021-11-30 18:50     ` Jon Steinhart
2021-11-30 21:45       ` Humm
2021-11-30 23:07         ` Jon Steinhart [this message]
2021-11-30 23:18           ` Henry Bent
2021-12-01  5:00             ` Jon Steinhart
2021-12-01  6:27               ` pbirkel
2021-12-01 16:42                 ` ron minnich
2021-12-01 17:08                   ` Ron Natalie
2021-12-01 21:56                   ` [TUHS] Encoding an ISA Warren Toomey
2021-12-01 13:59 [TUHS] Encoding an ISA: Random Logic vs. Control Stores Paul Ruizendaal
2021-12-01 14:55 Douglas McIlroy
2021-12-01 20:27 ` Jon Steinhart
2021-12-01 21:14 ` Lawrence Stewart
2021-12-01 22:09   ` Jon Steinhart

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).