27 Mar
2001
27 Mar
'01
6:16 p.m.
On Mar 28, 2:47, Iggy Drougge wrote:
This weekend, along with a batch of PS/2s, I received
a 3Com 3c588 1988
vintage MultiConnect Repeater. It's a 19" case with space for sixteen
cards.
Mine features one card indicating power with a green
LED as well as a
DB-9
female connector, then fourteen cards equipped with a
BNC connector, an
activity led, one partition LED and a partition/reset switch each.
Whenever a card is connected to a 10b2 network, the partition light
(which
otherwise emits a steady red light) begins to flicker.
Upon flicking the
switch into reset mode, the partition light goes out. The network works
fine
as long as there is no partitioning. I suppose its
purpose is to not leak
traffic between several networks.
Not quite. "Partitioning" is network jargon for disconnecting a port or
segment. If there's no terminator, the transceiver will behave as though
continually detecting collisions, and the repeater will automatically
disconnect ("partition") that transceiver from the rest. The red LED
lights up to tell you it has done so. It won't self-reset because if it
really were connected to a faulty network segment, it might end up going in
and out of operation.
What is the purpose of the DB-9 connector?
I'm not familiar with this particular repeater, but I imagine it's a serial
port for management and setup. Modern 3Com equipment has a serial port
wired to the same (non)standard as PC 9-pin ports, but that one may not be
wired in the normal way. It may also do auto-baud-rate detection, and it
probably won't emit anything until it receives a couple of carriage
returns. My old SynOptics 2813 hubs have a DA9 as well, and it's some odd
connection for a modem (they also have a DB25 whichj is a normal serial
port).
I'd pull the card and see if anything on it gives you any clues.
Could this repeater slow a network down?
Unlikely. You can get different cards for those repeaters -- 10baseT,
10base2, 10base5/AUI, and the 10baseT cards have 3 ports each. 3Com
wouldn't have done that if it were going to significantly impact bandwidth.
It's basically just a buffer; it doesn't process the data passing through
like a switch does. Any intelligence in it is just for monitoring and
setup (partitioning, etc).
Another thing you could try is snooping on the network packets (if you have
snoop, tcpdump, or similar) to see if the repeater emits any packets when
it first powers up. It might be trying to BOOTP to get an IP address, and
if you give it one, you can probably telnet to it and look at the setup.
It probably needs a password, though.
What does partitioning actually entail?
See above. Some more modern 3Com hubs also have the capability to split
the unit into segments (eg, the SuperStack II PS 40 hubs and others can
have 4 segments) but assigning ports to different segments isn't usually
called partitioning.
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
28 Mar
28 Mar
3:39 p.m.
Pete Turnbull skrev:
On Mar 28, 2:47, Iggy Drougge wrote:
This weekend,
along with a batch of PS/2s, I received a 3Com 3c588 1988
vintage MultiConnect Repeater. It's a 19" case with space for sixteen
cards.
Mine features one card indicating power with a
green LED as well as a
DB-9
female connector, then fourteen cards equipped
with a BNC connector, an
activity led, one partition LED and a partition/reset switch each.
Whenever a card is connected to a 10b2 network, the partition light
(which
otherwise emits a steady red light) begins to
flicker. Upon flicking the
switch into reset mode, the partition light goes out. The network works
fine
> as long as there is no partitioning. I suppose its purpose is to not leak
> traffic between several networks. Not quite. "Partitioning" is network jargon
for disconnecting a port or
segment. If there's no terminator, the transceiver will behave as though
continually detecting collisions, and the repeater will automatically
disconnect ("partition") that transceiver from the rest. The red LED
lights up to tell you it has done so. It won't self-reset because if it
really were connected to a faulty network segment, it might end up going in
and out of operation.
I see. I really must create a lot of small networks now, so that I may
saturate all those ports.
> What is the purpose of the DB-9 connector?
I'm not familiar with this particular repeater, but
I imagine it's a serial
port for management and setup. Modern 3Com equipment has a serial port
wired to the same (non)standard as PC 9-pin ports, but that one may not be
wired in the normal way. It may also do auto-baud-rate detection, and it
probably won't emit anything until it receives a couple of carriage
returns. My old SynOptics 2813 hubs have a DA9 as well, and it's some odd
connection for a modem (they also have a DB25 whichj is a normal serial
port).
What management would be involved with a repeater? All other hubs and
repeaters I've used have been entirely automatic.
I'd pull the card and see if anything on it gives
you any clues.
> Could this repeater slow a network down?
Unlikely. You can get different cards for those
repeaters -- 10baseT,
10base2, 10base5/AUI, and the 10baseT cards have 3 ports each. 3Com
wouldn't have done that if it were going to significantly impact bandwidth.
It's basically just a buffer; it doesn't process the data passing through
like a switch does. Any intelligence in it is just for monitoring and
setup (partitioning, etc).
I'd think so too, but I heard on Usenet that old repeaters (the kind which
actually call themselves repeaters =) could slow down modern networks. Don't
ask me how, though.
Another thing you could try is snooping on the network
packets (if you have
snoop, tcpdump, or similar) to see if the repeater emits any packets when
it first powers up. It might be trying to BOOTP to get an IP address, and
if you give it one, you can probably telnet to it and look at the setup.
It probably needs a password, though.
My, that's interesting. I'll let the OpenBSD machine have a go, then.
> What does partitioning actually entail?
See above. Some more modern 3Com hubs also have the
capability to split
the unit into segments (eg, the SuperStack II PS 40 hubs and others can
have 4 segments) but assigning ports to different segments isn't usually
called partitioning.
IOW it's just a glorified OFF switch. =)
--
En ligne avec Thor 2.6a.
Hackers do it with fewer instructions.
29 Mar
29 Mar
4:55 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
What is the
purpose of the DB-9 connector?
My old SynOptics 2813 hubs have a DA9 as well, and
it's some odd 
5:16 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
One teensy thing ... it's a DD-78, not DE, which is obvious when one considers
that the little VGA connector is in the 'E' shell.
Dick
----- Original Message -----
From: "Eric J. Korpela" <korpela(a)ellie.ssl.berkeley.edu>
To: <classiccmp(a)classiccmp.org>
Sent: Thursday, March 29, 2001 11:55 AM
Subject: D connector tirade (was: Re: Age-old ethernet equipment)
I'm going to pop in and point out a pet peeve of mine. The letter
following the D in a D-sub connector is the shell size.
The standard options I'm aware of are:
DE-9, DA-15, DB-25, DC-37, DD-50, DE-15, DA-26, DB-44, DC-62, DE-78,
and the occasional 2DE-19 and 2DB-52. Those 19 pin "D style" connectors
that Apple, Atari & NeXT were so fond of don't really count because
they were really just an attempt to force people to buy branded
products.
It's quite possible that someone made a DB-9 or a DA-9. If they did,
you certainly couldn't plug your mouse into one. (Actually there is
a DB-9W4 which has 5 standard pins and 4 places for either coax inserts
or size 8 pins (just in case you need to run 160 amps through your
connector.))
It doesn't so much bother me when people use "DB-9" in conversation, but
when people selling the things online have them listed incorrectly it
makes a search more difficult.
My next tirade will be on why you should always specify pins and sockets
rather than male or female. (It doesn't have anything to do with sexism.)
Now back to your regularly scheduled discussion.
Eric
What is the purpose of the DB-9 connector?
My
old SynOptics 2813 hubs have a DA9 as well, and it's some odd 
5:24 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
On Thu, 29 Mar 2001, Eric J. Korpela wrote:
The standard options I'm aware of are:
DE-9, DA-15, DB-25, DC-37, DD-50, DE-15, DA-26, DB-44, DC-62, DE-78,
and the occasional 2DE-19 and 2DB-52. Those 19 pin "D style" connectors
that Apple, Atari & NeXT were so fond of don't really count because
they were really just an attempt to force people to buy branded
products.
That's good to know about the 2DE-19. So now what I wonder is what's the
designation for the 23-pin D-sub connector used for RGB on the Amiga 500?
(or was it the disk drive? I don't rememeber)
ok
r.
6:09 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
That's good to know about the 2DE-19. So now what
I wonder is what's the
designation for the 23-pin D-sub connector used for RGB on the Amiga 500?
(or was it the disk drive? I don't rememeber)
It's video, and the official designation is PITA-23. :-P
--
----------------------------- personal page: http://www.armory.com/~spectre/ --
Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu
-- Eat healthy, stay fit, DIE ANYWAY! -----------------------------------------
9:07 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
Cameron Kaiser skrev:
> That's good to know about the 2DE-19. So now
what I wonder is what's the
> designation for the 23-pin D-sub connector used for RGB on the Amiga 500?
> (or was it the disk drive? I don't rememeber)
It's video, and the official designation is
PITA-23. :-P
Pain-in-the-arse-23?
Why? I find the Amiga video connector to be the most versatile I've ever
encountered. It's got both analogue and digital video as well as pins for
genlock, clocks, three kinds of sync, lots of DC and ground.
--
En ligne avec Thor 2.6a.
Eccovi una delle sigle francesi dedicate a questo shojo... come, non e' uno
shojo? Andate a spiegarlo ai francesi... questa e' una canzone da shojo,
quindi per me Goldrake e' uno shojo :p
Tacchan om den franska signaturmelodin till Goldorak (Grendizer)
9:16 a.m.
New subject: D connector tirade
Pain-in-the-arse-23?
Why? I find the Amiga video connector to be the most versatile I've ever
encountered. It's got both analogue and digital video as well as pins for
genlock, clocks, three kinds of sync, lots of DC and ground.
Mmm. Question. Is there any (safe) way to wire the 23 pin video connector
on an Amiga to the cm/y/k inputs on a 1085 line HDTV? :)
--
Jim Strickland
jim(a)DIESPAMMERSCUMcalico.litterbox.com
-----------------------------------------------------------------------
BeOS Powered!
-----------------------------------------------------------------------
9:56 a.m.
New subject: D connector tirade
On Thu, 29 Mar 2001, Jim Strickland wrote:
Mmm. Question. Is there any (safe) way to wire the
23 pin video connector
on an Amiga to the cm/y/k inputs on a 1085 line HDTV? :)
Aha! Now THAT is a very good question, and one that I would surely like to
hear the answer to. (:
The inputs aren't CMYK, BTW. Actually, they're not RGB (analog or
digital), either. Unless you're a lucky European with a SCART connector.
(:
It's Y'Pb'Pr', which is analog color-difference video (interlaced or
progressive scan), generically known as "YUV".
According to the DVD FAQ, YUV to RGB transcoders costing $200 to $300 are
rumoured to exist but "seem hard to track down." It mentions a $700
converter is available from avscience (http://www.avscience.com) and that
Extron (http://www.extron.com) has one for $900.
ok
r.
11:05 a.m.
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10:50 p.m.
New subject: D connector tirade
Jim Strickland skrev:
> Pain-in-the-arse-23?
> Why? I find the Amiga video connector to be the most versatile I've ever
> encountered. It's got both analogue and digital video as well as pins for
> genlock, clocks, three kinds of sync, lots of DC and ground.
Mmm. Question. Is there any (safe) way to wire the 23
pin video connector
on an Amiga to the cm/y/k inputs on a 1085 line HDTV? :)
You'd have to find some way to generate complement colours out of the RGB,
then, and don't ask me how to force it into outputting 1085 lines...
--
En ligne avec Thor 2.6a.
Netiquette: it's not just a good idea, there's actually an RFC about it!
For the full details, check out <http://www.faqs.org/rfcs/rfc1855.html>.
9:22 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
It's video,
and the official designation is PITA-23. :-P
Pain-in-the-arse-23?
Why? I find the Amiga video connector to be the most versatile I've ever
encountered. It's got both analogue and digital video as well as pins for
genlock, clocks, three kinds of sync, lots of DC and ground.
10:53 p.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
Cameron Kaiser skrev:
> >It's video, and the official designation
is PITA-23. :-P
>
> Pain-in-the-arse-23?
> Why? I find the Amiga video connector to be the most versatile I've ever
> encountered. It's got both analogue and digital video as well as pins for
> genlock, clocks, three kinds of sync, lots of DC and ground.
That's why it's a PITA. Finding cables for it
is expensive and few people
stock DB23 connectors.
Surely it can't be more uncommon than just about every other non-VGA
connector. At least my local electronics shop has got D23 connectors while 3W3
and 13W3 have to be specifically ordered.
--
En ligne avec Thor 2.6a.
Take a ride / Take me aside / Push me up to the life /?Down to Prag /
We go far /?I guess we'll crash slowly into tar
When I come home from the trench /?I telephone my friends / We take a car /
We may go far / I guess we'll crash slowly into tar
Strangers will come /?Hold on...
And late at night / we go to clubs /?where no one else is dressed up /
And when it's done / I must return /?I guess we'll crash slowly into tar
Crash Slowly - Strasse, 1981
30 Mar
30 Mar
12:37 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
That's why
it's a PITA. Finding cables for it is expensive and few people
stock DB23 connectors.
Surely it can't be more uncommon than just about every other non-VGA
connector. At least my local electronics shop has got D23 connectors while 3W3
and 13W3 have to be specifically ordered.
1:34 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
Finding appropriate cabling for our various hardware oddities would be easier,
indeed, if folks could just get the nomenclature straight. After all, given
that the price of the cable, or the necessary components, is going to be
painfully high, it would be comforting to know that one had specified the
components correctly.
Dick
----- Original Message -----
From: "Cameron Kaiser" <spectre(a)stockholm.ptloma.edu>
To: <classiccmp(a)classiccmp.org>
Sent: Friday, March 30, 2001 7:37 AM
Subject: Re: D connector tirade (was: Re: Age-old ethernet equipment)
http://www.armory.com/~spectre/ --
> >That's why it's a PITA. Finding
cables for it is expensive and few people
> >stock DB23 connectors.
>
> Surely it can't be more uncommon than just about every other non-VGA
> connector. At least my local electronics shop has got D23 connectors while
3W3
and 13W3 have
to be specifically ordered.
You're lucky. Not even the local Fry's carries them. I have to special order
them at exorbitant prices. For that matter, I haven't seen any 13w3 cables
at the local Fry's either.
--
----------------------------- personal page: Cameron Kaiser, Point Loma Nazarene University *
ckaiser(a)stockholm.ptloma.edu
-- /etc/motd: /earth is 98% full. please delete anyone you
can. ---------------
3:34 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
At 03:22 PM 3/29/01 -0800, Cameron Kaiser wrote:
That's why it's a PITA. Finding cables for it
is expensive and few people
stock DB23 connectors.
Has the world forgotten how to hack-saw two pins/sockets
off a regular -25? :-)
- John
2 Apr
2 Apr
1:53 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
--- John Foust <jfoust(a)threedee.com> wrote:
At 03:22 PM 3/29/01 -0800, Cameron Kaiser wrote:
I've seen that on commercial products - Genlocks, mostly. It works OK for
converting a DB-25S, but it gets ugly for a DB-25P. Fortunately, I still
have one or two Amiga connectors I got back in the bad old days.
-ethan
__________________________________________________
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That's why it's a PITA. Finding cables for
it is expensive and few people
stock DB23 connectors.
Has the world forgotten how to hack-saw two pins/sockets
off a regular -25? :-) 
5:08 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
On Mon, 2 Apr 2001, Ethan Dicks wrote:
I've seen that on
commercial products - Genlocks, mostly. It works OK for
converting a DB-25S, but it gets ugly for a DB-25P. Fortunately, I still
have one or two Amiga connectors I got back in the bad old days.
I found that it was ugly only in a completely literal way -- it definitely
LOOKED ugly. When I got my first Amiga 1000 in 1986?, I could not find a
source for D(almostB)23P, so I cut off one end of the shell and the last
two pins of a DB25P. It worked just fine, except that you had to look
while connecting, as it was now POSSIBLE to plug the connector in offset
That's why it's a PITA. Finding cables for it
is expensive and few people
stock DB23 connectors.
off a regular -25? :-) from its correct position.
--
Grumpy Ol' Fred cisin(a)xenosoft.com
9:55 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
Ethan Dicks skrev:
--- John Foust <jfoust(a)threedee.com> wrote:
> At 03:22 PM 3/29/01 -0800, Cameron Kaiser wrote:
> >That's why it's a PITA. Finding cables for it is expensive and few
people
> >stock DB23 connectors.
>
> Has the world forgotten how to hack-saw two pins/sockets
> off a regular -25? :-)
I've seen that on commercial products - Genlocks,
mostly. It works OK for
converting a DB-25S, but it gets ugly for a DB-25P. Fortunately, I still
have one or two Amiga connectors I got back in the bad old days.
If that holds true, then I'm not amazed that some people in another club who
are using Amigas for subtitling managed to plug a genlock into the serial
port. Bad idea.
--
En ligne avec Thor 2.6a.
G? med i SUGA, Swedish Usergroup of Amiga!
WWW: http://swedish.usergroup.amiga.tm/
BBS: 08-6582572, telnet://sua.ath.cx:42512
29 Mar
29 Mar
8:11 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
--- "r. 'bear' stricklin" <red(a)bears.org> wrote:
...So now what I wonder is what's the designation
for the 23-pin D-sub
connector used for RGB on the Amiga 500? (or was it the disk drive? I don't
rememeber)
Both. One female and one male.
-ethan
=====
Even though my old e-mail address is no longer going to
vanish, please note my new public address: erd(a)iname.com
The original webpage address is still going away. The
permanent home is: http://penguincentral.com/
See http://ohio.voyager.net/ for details.
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30 Mar
30 Mar
1:28 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
Yes, and the "female" was called a DsnS (S for socket) where s was shell-size
and n was for populated number of pins, and P/S for gender.
Dick
----- Original Message -----
From: "Ethan Dicks" <ethan_dicks(a)yahoo.com>
To: <classiccmp(a)classiccmp.org>
Sent: Thursday, March 29, 2001 3:11 PM
Subject: Re: D connector tirade (was: Re: Age-old ethernet equipment)
--- "r. 'bear' stricklin" <red(a)bears.org> wrote:
...So now what I wonder is what's the
designation for the 23-pin D-sub
connector used for RGB on the Amiga 500? (or was it the disk drive? I don't
rememeber)
Both. One female and one male.
-ethan
=====
Even though my old e-mail address is no longer going to
vanish, please note my new public address: erd(a)iname.com
The original webpage address is still going away. The
permanent home is: http://penguincentral.com/
See http://ohio.voyager.net/ for details.
__________________________________________________
Do You Yahoo!?
Get email at your own domain with Yahoo! Mail.
http://personal.mail.yahoo.com/?.refer=text
2 Apr
2 Apr
3:55 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
Yes, and the "female" was called a DsnS (S
for socket) where s was shell-size
and n was for populated number of pins, and P/S for gender.
Which brings me to the seond tirade. :) The reason to use pins and sockets it
that the sex of a socket is female, but the overall sex of the connector
containing the sockets is male for D connectors. (If you don't see what I mean,
find a D connector and look at it.) Likewise for a connector with pins, the
pins are male but the overall connector sex is female. In other words, the sex
of a D coonector is indeterminate. Most people will use male for the pins, but
in my work I've run into people (generally outside the US) who use the connector
sex. Using P and S is unmistakable.
Eric
29 Mar
29 Mar
8:30 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
r. 'bear' stricklin skrev:
On Thu, 29 Mar 2001, Eric J. Korpela wrote:
> The standard options I'm aware of are:
> DE-9, DA-15, DB-25, DC-37, DD-50, DE-15, DA-26, DB-44, DC-62, DE-78,
> and the occasional 2DE-19 and 2DB-52. Those 19 pin "D style" connectors
> that Apple, Atari & NeXT were so fond of don't really count because
> they were really just an attempt to force people to buy branded
> products.
That's good to know about the 2DE-19. So now what I
wonder is what's the
designation for the 23-pin D-sub connector used for RGB on the Amiga 500?
(or was it the disk drive? I don't rememeber)
Both. =)
--
En ligne avec Thor 2.6a.
"I'm all man underneath my skirt."
Boy George
5:57 a.m.
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30 Mar
30 Mar
1:24 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
The origitnal concept underlying this designiation scheme was based on the
notion that you had the 'D' for the shape, the <A..D> for the shell sizes
that
were in use at the time, 'E' and beyond coming later. and a number for the
number of POPULATED pin locations.
This notion didn't catch on, however, and I think few of us will remember
references to DB3 or the like, DB3 being the 'B' shell with pins 2, 3, and 7
populated, though that was a common configuration. I remember looking for such
references and really can't say I ever ran in to any. I do remember the
description in a parts catalog, however, though I don't remember whether it was
CANNON or APHENOL, or what.
If people would use this method, it would be quite clear, however.
Dick
----- Original Message -----
From: "Tony Duell" <ard(a)p850ug1.demon.co.uk>
To: <classiccmp(a)classiccmp.org>
Sent: Thursday, March 29, 2001 12:57 PM
Subject: Re: D connector tirade (was: Re: Age-old ethernet equipment)
I'm going to pop in and point out a pet peeve of mine. The letter
It's a pet peeve of mine too (especially when somebody claims that
there's no such thing as a DE9, and that the connector on their mouse is
a DB9).
What is
the purpose of the DB-9 connector?
My old SynOptics 2813 hubs have a DA9 as well,
and it's some odd following the D in a D-sub connector is the shell
size.
The standard options I'm aware of are:
DE-9, DA-15, DB-25, DC-37, DD-50, DE-15, DA-26, DB-44, DC-62, DE-78,
You must mean DD78 (I don't even want to think about cramming 78 pins
into a size E shell :-))
and the occasional 2DE-19 and 2DB-52. Those 19
pin "D style" connectors
that Apple, Atari & NeXT were so fond of don't really count because
they were really just an attempt to force people to buy branded
products.
I've seen the Apple disk drive connector refered to as a DF19. And a DG23
for the Amiga video connector. I don't think those names are in any way
official, but they do make some sort of sense
It's quite possible that someone made a DB-9 or a DA-9. If they did,
A friend of mine suggested that a DB9 should be the name for a DB25
connector with only pins 1-8 and 20 fitted :-). This was a common
connector on RS232 cables at one time (particularly ones made with
crimp-on pins).
No, I don't much care for that idea, but again, it has a certain logic to it.
-tony
4:22 a.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
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12:49 p.m.
New subject: D connector tirade (was: Re: Age-old ethernet equipment)
Now there's a case I had never worried about. I guess it could come up, since
the signals really needed for VGA are just the six video/return signals and the
two sync's and a common for them. That's 9, and certainly would warrant a valid
connector configuration that one could call DE9, though that one already exists.
I'm glad I don't have to explain that. There is, by the way, another more
"current" name for the 3-row, 'E'-shell connector commonly seen with 15
pins in
it in VGA applications. I'm not remembering it, though.
Dick
----- Original Message -----
From: "Tony Duell" <ard(a)p850ug1.demon.co.uk>
To: <classiccmp(a)classiccmp.org>
Sent: Friday, March 30, 2001 11:22 AM
Subject: Re: D connector tirade (was: Re: Age-old ethernet equipment)
>
> The origitnal concept underlying this designiation scheme was based on the
> notion that you had the 'D' for the shape, the <A..D> for the shell
sizes
that
were in use at
the time, 'E' and beyond coming later. and a number for the
Yes, that's the explanation I heard for why the 9 pin is size E (rather
than A, with all the others moving up one letter).
number of POPULATED pin locations.
The problem with that notation is : what do you call a connector formed
by taking a VGA connector shell (for want of a better name) and puting 9
pins in it. It can't be a DE9 because that's the normal E-shell with all
positions populated.
Also, IIRC, there were DE3 and DE5 connectors used by HP for serial lines
at one point. And the pin spacing was not the same as either the normal
DE9 or high-density DE15.
No, I think the number _has_ to be the total number of contact positions
that could be used.
-tony
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