12 May
2002
12 May
'02
5:50 a.m.
Hello Again!
I'm going to be getting the rest of the bits for my IPC this weekend, I
was wondering how I could network it up without resorting to thicknet. I
have a hub that Does AUI, 10-bT and thinnet, the IPC has AUI as well.
The official way to link the two (female) AUI ports is two tranceivers
and a thicknet cable which I can't be done with - I have been reading
about an AUI crossover cable, with maybe a homebrew collision generator
PCB...
Any experience with this sort of thing, guys? Tips?
Alex
--
My computer's heavier than yours.
--
12 May
12 May
6:54 a.m.
On 12 May 2002, Alex White wrote:
Hello Again!
I'm going to be getting the rest of the bits for my IPC this weekend, I
was wondering how I could network it up without resorting to thicknet. I
have a hub that Does AUI, 10-bT and thinnet, the IPC has AUI as well.
The official way to link the two (female) AUI ports is two tranceivers
and a thicknet cable which I can't be done with - I have been reading
about an AUI crossover cable, with maybe a homebrew collision generator
PCB...
Any experience with this sort of thing, guys? Tips?
I keep a drawerful of AUI-10bT transceivers. They're usually a buck
or 2 at computer junk stores, and work fine with any box I've ever stuck
one on.
Doc
7:02 a.m.
Alex White wrote:
I'm going to be getting the rest of the bits for
my IPC this weekend, I
was wondering how I could network it up without resorting to thicknet. I
have a hub that Does AUI, 10-bT and thinnet, the IPC has AUI as well.
Arrgghhh... If only you'd said! I have some AUI-to-10-base-T
tranceivers that you could have had along with the keyboard
and stuff.
The official way to link the two (female) AUI ports is
two tranceivers
and a thicknet cable which I can't be done with
Shame, I've got some thicknet cable in the loft! But in fact, you
can fit AUI-to-thinnet transceivers and just use BNC cables. Which
is what I do at home.
- I have been reading
about an AUI crossover cable, with maybe a homebrew collision generator
PCB...
I've heard of these, but never seen it done. Much simpler to use
transceivers, especially now that everybody's throwing them out
in favour of twisted-pair wiring.
--
John Honniball
coredump(a)gifford.co.uk
7:06 a.m.
On 12 May 2002, Alex White wrote:
Hello Again!
I'm going to be getting the rest of the bits for my IPC this weekend, I
was wondering how I could network it up without resorting to thicknet. I
have a hub that Does AUI, 10-bT and thinnet, the IPC has AUI as well.
The official way to link the two (female) AUI ports is two tranceivers
and a thicknet cable which I can't be done with - I have been reading
about an AUI crossover cable, with maybe a homebrew collision generator
PCB...
Any experience with this sort of thing, guys? Tips?
Alex
--
My computer's heavier than yours.
--
All you need is a AUI --> Thinnet (10Base2) or AUI --> 10Bt tranceiver.
Quite common and inexpensive
If you can't find one, I'll ship you one for postage..
Peter Wallace
9:29 a.m.
All you need is a AUI --> Thinnet (10Base2) or AUI
--> 10Bt tranceiver.
I get the impression that two-node 10Bt networking can be done with
nothing but a crossover cable. (IE the chaining connection on hubs is
just a crossover) Is this possibly true, using just the cable?
John A.
10:06 a.m.
On Sun, 12 May 2002, John Allain wrote:
Yup. Normal ethernet cable is straight thru - data pins are 1/2, 3/6
(those are pairs). To get a crossover cable, 1->3, 2->6, 3->1, 6->2 on
each end. The numbering is done like this (looking at the plug as if we
were the jack the plug is about to go into:
_
___//___
| |
|________|
||||||||||
12345678
-- Pat
All you need
is a AUI --> Thinnet (10Base2) or AUI --> 10Bt tranceiver.
I get the impression that two-node 10Bt networking can be done with
nothing but a crossover cable. (IE the chaining connection on hubs is
just a crossover) Is this possibly true, using just the cable?
10:11 a.m.
On Sun, 2002-05-12 at 19:29, John Allain wrote:
Yes, but apparently it only works when both adaptors are full-duplex.
Half-duplex mode needs collision-detect circuitry building in (as the
transciever that you are eliminating contains this, and the host
doesn't.) Apparently.
See: http://mail-index.netbsd.org/port-vax/1999/07/09/0014.html
Alex
--
My computer's heavier than yours.
--
All you need
is a AUI --> Thinnet (10Base2) or AUI --> 10Bt tranceiver.
I get the impression that two-node 10Bt networking can be done with
nothing but a crossover cable. (IE the chaining connection on hubs is
just a crossover) Is this possibly true, using just the cable?
10:44 a.m.
On Sun, 2002-05-12 at 20:11, Alex White wrote:
On Sun, 2002-05-12 at 19:29, John Allain wrote:
Yes, but apparently it only works when both adaptors are full-duplex.
Half-duplex mode needs collision-detect circuitry building in (as the
transciever that you are eliminating contains this, and the host
doesn't.) Apparently.
See: http://mail-index.netbsd.org/port-vax/1999/07/09/0014.html
Alex
(for the AUI hack I was talking about earlier)
--
My computer's heavier than yours.
--
All you
need is a AUI --> Thinnet (10Base2) or AUI --> 10Bt tranceiver.
I get the impression that two-node 10Bt networking can be done with
nothing but a crossover cable. (IE the chaining connection on hubs is
just a crossover) Is this possibly true, using just the cable?
10:24 a.m.
I get the impression that two-node 10Bt networking can
be done with
nothing but a crossover cable. (IE the chaining connection on hubs is
just a crossover) Is this possibly true, using just the cable?
If all you're trying to do is hook two machines together you
don't need a hub or anything else, just a CAT5 cross-over cable. You
can either roll your own or Belkin makes a nice one, p/n R7J304.
They're actually pretty easy to find. We used to play network games
like this between two systems without actually being connected to the
LAN.
Jeff
--
Home of the TRS-80 Model 2000 FAQ File
http://www.cchaven.com
http://www.geocities.com/siliconvalley/lakes/6757
10:29 a.m.
John Allain wrote:
Yes, just swap the pairs in the RJ45 - pins one and two are one pair, and 3
& 6 are the other pair that you need to worry about. This works between two
machines very well indeed.
1 2 3 4 5 6 Contacts uppermost
+-------------+
| | | | | | | |
| | | | | | | |
| | It's bad ASCII art time, folks!
| |
| |
| +-+ |
| |C| |
| |L| |
| |I| |
| |P| |
| |
Cheers,
Dave.
All you need
is a AUI --> Thinnet (10Base2) or AUI --> 10Bt tranceiver.
I get the impression that two-node 10Bt networking can be done with
nothing but a crossover cable. (IE the chaining connection on hubs is
just a crossover) Is this possibly true, using just the cable?
John A.
12:05 p.m.
Dave Woodman wrote:
John Allain wrote:
Yes, just swap the pairs in the RJ45 - pins one and two are one pair, and 3
& 6 are the other pair that you need to worry about. This works between two
machines very well indeed.
All you
need is a AUI --> Thinnet (10Base2) or AUI --> 10Bt tranceiver.
I get the impression that two-node 10Bt networking can be done with
nothing but a crossover cable. (IE the chaining connection on hubs is
just a crossover) Is this possibly true, using just the cable?
John A.
1 2 3 4 5 6 Contacts uppermost
+-------------+
| | | | | | | |
| | | | | | | |
| | It's bad ASCII art time, folks!
| |
| |
| +-+ |
| |C| |
| |L| |
| |I| |
| |P| |
| |
Cheers,
Dave.
Of course, I really mean
1 2 3 4 5 6 7 8 Contacts uppermost
+-----------------+
| | | | | | | | | |
| | | | | | | | | |
| | It's bad ASCII art time, folks!
| |
| |
| +-+ |
| |C| |
| |L| |
| |I| |
| |P| |
| |
I learn to count to eight next month!
Dave.
11:49 a.m.
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1:45 p.m.
On Sun, 2002-05-12 at 21:49, Tony Duell wrote:
I beleive that one is possible. In fact I've seen crossover cables on
sale for this purpose (this doesn't mean they _work_ of course :-)).
I'm using one right now (I have a mongerel of a network...)
--
My computer's heavier than yours.
--
All you need is a AUI --> Thinnet (10Base2)
or AUI --> 10Bt tranceiver.
I get the impression that two-node 10Bt networking can be done with
nothing but a crossover cable. (IE the chaining connection on hubs is
just a crossover) Is this possibly true, using just the cable?
7:16 a.m.
On 12 May 2002, Alex White wrote:
Hello Again!
I'm going to be getting the rest of the bits for my IPC this weekend, I
was wondering how I could network it up without resorting to thicknet. I
have a hub that Does AUI, 10-bT and thinnet, the IPC has AUI as well.
The official way to link the two (female) AUI ports is two tranceivers
and a thicknet cable which I can't be done with - I have been reading
about an AUI crossover cable, with maybe a homebrew collision generator
PCB...
Any experience with this sort of thing, guys? Tips?
Find yourself a 10Base2 or 10BaseT AUI transciever. Building an AUI
concentrator might be fun, but I'm sure it'd be a pain in the preverbial
ass. Look on eBay, there's usually stuff like this there. Four of them
are listed right now:
http://search.ebay.com/search/search.dll?MfcISAPICommand=GetResult&ht=1…
-- Pat
8:15 a.m.
OK guys, message received: "Stop farting around homebrewing stuff"
*grin*
Alex
--
My computer's heavier than yours.
--
11:41 a.m.
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1:48 p.m.
On Sun, 2002-05-12 at 21:41, Tony Duell wrote:
Yep, i'm insane like you. I recon I
could do it with plain logic blocks
and a few op-amps. And a few twinkly LEDs.
Alex
--
My computer's heavier than yours.
--
Hello Again!
I'm going to be getting the rest of the bits for my IPC this weekend, I
was wondering how I could network it up without resorting to thicknet. I
have a hub that Does AUI, 10-bT and thinnet, the IPC has AUI as well.
The official way to link the two (female) AUI ports is two tranceivers
and a thicknet cable which I can't be done with - I have been reading
But unless you're as insane as me and like soldering up chips, then just
getting a transceiver is a lot simpler...
8108
days inactive
8108
days old
16 comments
9 participants
participants (9)
-
allain＠panix.com -
ard＠p850ug1.demon.co.uk -
coredump＠gifford.co.uk -
dave＠naffnet.org.uk -
doc＠mdrconsult.com -
jhellige＠earthlink.net -
meltie＠myrealbox.com -
pat＠purdueriots.com -
pcw＠mesanet.com