On 10/04/2018 11:26 AM, Paul Koning via cctalk wrote:
That's sort of accurate. A quick look shows some key differences: V2 adds
the "collision presence test" -- verifying the collision detect signal
is working. There is also the "jabber timer" -- a watchdog timeout that
stops excessively
> On Oct 4, 2018, at 1:30 PM, Grant Taylor via cctalk
> wrote:
>
> On 10/04/2018 11:26 AM, Paul Koning via cctalk wrote:
>> That's sort of accurate. A quick look shows some key differences: V2 adds
>> the "collision presence test" -- verifying the collision detect signal is
>> working.
I have now finally concluded the PDP-15 documentation scanning project.
Many year ago my father saved a big lot of PDP-15 documentation that was
thrown out from Philips in Stockholm. I have over the years scanned
documents on request which has ended up at bitsavers. Some docuements were
already
On 10/04/2018 11:07 AM, Eric Smith via cctalk wrote:
The Ethernet I and II standards are available from Bitsavers:
http://bitsavers.trailing-edge.com/pdf/xerox/ethernet/
Cool.
From the preface of _The Ethernet_ Version 2.0: Version 2.0 of the
Ethernet specification reflects the
> On Oct 4, 2018, at 1:07 PM, Eric Smith via cctalk
> wrote:
>
> On Tue, Oct 2, 2018 at 10:55 PM Grant Taylor via cctalk <
> cctalk@classiccmp.org> wrote:
>
>> On 10/02/2018 05:27 PM, Eric Smith via cctalk wrote:
>>> 3 Mbps Ethernet is _NOT_ Ethernet I. Both Ethernet I and II were 10 Mbps
On Thu, Oct 4, 2018 at 11:39 AM Paul Koning via cctalk <
cctalk@classiccmp.org> wrote:
>
>
> > On Oct 4, 2018, at 1:30 PM, Grant Taylor via cctalk <
> cctalk@classiccmp.org> wrote:
> >
> > On 10/04/2018 11:26 AM, Paul Koning via cctalk wrote:
> >> That's sort of accurate. A quick look shows some
https://cleveland.craigslist.org/sys/d/data-general-free-for-good/6714121268.html
> On Oct 4, 2018, at 1:43 PM, Warner Losh wrote:
>
>
>
> On Thu, Oct 4, 2018 at 11:39 AM Paul Koning via cctalk
> wrote:
>
>
> > On Oct 4, 2018, at 1:30 PM, Grant Taylor via cctalk
> > wrote:
> > ...
> > That makes me wonder about the "heartbeat" switch that I see on older AUI
> >
On Tue, Oct 2, 2018 at 10:55 PM Grant Taylor via cctalk <
cctalk@classiccmp.org> wrote:
> On 10/02/2018 05:27 PM, Eric Smith via cctalk wrote:
> > 3 Mbps Ethernet is _NOT_ Ethernet I. Both Ethernet I and II were 10 Mbps
> > DIX standards, with II having only minor differences from I.
>
> Okay.
On 10/04/2018 02:31 AM, Peter Corlett via cctalk wrote:
It was probably just known as "Ethernet". If there's only one kind,
why give it a longer name to distinguish it from future variants that
may never come to be? My bumph tells me it was called "Experimental
Ethernet", but I suspect that's
On Wed, Oct 3, 2018 at 11:21 PM Mark Kahrs via cctalk
wrote:
> I was there and it was always called "The Ethernet". When the 10 Mb
> standard came into being, it was then referred to as "The Experimental
> Ethernet". If you want to be *really* pedantic, you could refer to it as
> the "2.94 MHz
Den tis 2 okt. 2018 kl 00:27 skrev Al Kossow via cctalk <
cctalk@classiccmp.org>:
> I'm interested.
> PDP-15 software in any form is pretty rare
>
>
>
Good that we have a taker. I have no such scanner available that could
possible scan these in a good way.
I will retrieve them and pack them and
On 10/04/2018 12:16 PM, Paul Koning via cctalk wrote:
I had to look up SQE. http://www.ethermanage.com/ethernet/sqe/sqe.html
It's 802-speak for the same signal.
I agree that it's the same concept and function. Though the link you
shared states that there is some timing difference between
Someone linked this to me on IRC. I called, but it was already
claimed. Just hope it gets to a good home.
-Ian
On Thu, Oct 4, 2018 at 2:32 PM jos via cctalk wrote:
>
> On 04.10.2018 20:03, John Foust via cctalk wrote:
> >
> >
On 04.10.2018 20:03, John Foust via cctalk wrote:
https://cleveland.craigslist.org/sys/d/data-general-free-for-good/6714121268.html
A MP/200. 16 bit CPU built with AMD2901.
Rare beast, alas mine doesn't post. Powersupply is OK.
Lack of schematics / detailed documentations hampers
On Thu, Oct 4, 2018 at 1:55 PM Bill Degnan wrote:
> I must have misrepresented this then, the book does claim Aloha Net to be
> just a working name in the very beginning. When it got to the beta testing
> phase it was already called Ethernet
>
After you referenced _Where Wizards Stay Up Late_,
I got it, awesome, tons of gold to scrap. I then sold the keyboard and
threw the terminal over the bridge. I just had to tell the guy I was from
the museum of computers in Cleveland. oops sorry I mean I did not get it.
ha ha
On Thu, Oct 4, 2018 at 2:51 PM Ian Primus via cctalk
wrote:
>
>
>
> Thanks! From that, it sounds like the name "Alto Aloha" was only used
> during early planning, before CSMA/CD was invented, and that nothing that
> was actually built ever used that name, contrary to the account in _Where
> Wizards Stay Up Late_.
>
I must have misrepresented this then, the
On Thu, Oct 04, 2018 at 03:37:59PM -0400, Bill Degnan via cctalk wrote:
> oops sorry I mean I did not get it.
dang, and I already had my samurai sword nearly sharpened.
mcl
The typo(s) in the quote are mine, not the book's.
On Thu, Oct 4, 2018 at 5:18 PM Mattis Lind via cctalk
wrote:
>
> I have now finally concluded the PDP-15 documentation scanning project.
>
Thanks for doing this!
--
Regards,
Torfinn Ingolfsen
On 10/02/2018 09:20 PM, Bill Degnan via cctalk wrote:
I think Metcalfe was just giving credit for where he got the idea of
letting packets collide like alohanet was doing. He took their idea
and improved with collision detection and borrowed the name of his
improvements and subsequent network
> From: Eric Smith
> I think the account given in the book may be a bit confused on this
> point. ... That sequence of events is contradicted by Pelkey ...
> describes the name change from Alto Aloha to Ether as happening in May
> 1973 in agreement with WWSUL, except that in
I got a request for a scan of the Micro Peripherals Inc MPI 91/92 Product
Manual. I have the manual, I will scan it and post if no one has a copy.
But I don't want to go through the effort if it exists somewhere already.
I noticed on bitsavers there was no MPI nor Micro Peripherals Inc section
so
On Thu, Oct 4, 2018, 14:19 Eric Smith wrote:
> except that in the Pelkey account the Alto network wasn't designed and
> built until June, _after_ the name change.
>
I should have written that it the design and construction _started_ in
June. The initial Ethernet wasn't completed until late
On 10/4/2018 8:34 PM, Bill Degnan via cctalk wrote:
I got a request for a scan of the Micro Peripherals Inc MPI 91/92 Product
Manual. I have the manual, I will scan it and post if no one has a copy.
But I don't want to go through the effort if it exists somewhere already.
I noticed on
Hi,
two weeks before I was asked from a friend if it's worth to
rescue an HP1000 A600 computer from the stuff available at a local
scrapp seller in Erfurt.
Of course I've answered yes!
Unfortunately someone at the scrap site has pulled some cards and at
least in one case a chip fom a card. There
On Wed, 3 Oct 2018, Adrian Graham wrote:
Here?s a pic of my RX50 and TK50. I?ve not tried to power them up for
years.
Speaking of TK50 and since I'm playing with them at the moment, is there
any information on the SCSI command set for the TK50Z? My goal is to talk
to one on a Linux system,
On Tue, Oct 02, 2018 at 11:34:54AM -0600, Grant Taylor via cctalk wrote:
> Does anybody know names / terms that correspond to the original 3 Mbps
> Ethernet?
> I.e. 10 Mbps Ethernet is also knows as Ethernet II (2) and D.I.X. (for
> Digital, Intel, and Xerox).
> Was the first 3 Mbps Ethernet
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