From: Dennis Ritchie <dmr@bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Datakit info ? - off topic
Date: Fri, 6 Oct 2000 10:12:16 +0000 [thread overview]
Message-ID: <39DD3805.98CD2B01@bell-labs.com> (raw)
In-Reply-To: <1502308426@snellwilcox.com>
steve.simon@snellwilcox.com wrote:
>
> I'am building a very lightweight protocol for inter CPU comms in a
> multiprocessor embedded system. What I have heard of Datakit and its Media
> Access protocols is interesting and I would like to learn more.
>
> I send this here as I read 9fans, and also I reckon that somone listening will be
> able to help very easily.
>
> Anyone have any pointers to papers (preferably online) on Datakit
> implementation?
I looked around amongst my own stuff for Datakit material, but didn't
find the papers describing the MAC through transport protocols.
They are quite interesting and innovative in a variety of ways,
and the resulting product seems to have made a fair amount of money
over the years, but it's been distinctly musty for a while. For better or worse,
the approach is basically that of ATM: small fixed-length packets with
nonce virtual-circuit addressing in each packet, hardware-switched.
One unusual approach was use of a 9-bit datapath in most of the hardware
(making a distinction between control and data bytes).
If you're really interested, follow up privately.
Dennis
next prev parent reply other threads:[~2000-10-06 10:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-10-05 9:38 steve.simon
2000-10-06 10:12 ` Dennis Ritchie [this message]
2001-01-04 4:20 ` [9fans] an OS design Rick Hohensee
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:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=39DD3805.98CD2B01@bell-labs.com \
--to=dmr@bell-labs.com \
--cc=9fans@cse.psu.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* 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).