13 Jul
2001
13 Jul
'01
2:42 p.m.
Hi. I seem to find this connector with 50 pins in three rows in a D-shell
on my VAXservers and VAXstations. I even have one or two on my DECsystem
5840. Could someone tell me what they are? Three rows. 17 - 16 - 17.
Peace... Sridhar
13 Jul
13 Jul
3:42 p.m.
Is it possible that they're SCSI? I've run across a lot of external HDs
with connectors like you describe, though never on a system. I found a
link to a picture at http://www.computeruniverse.net/products/90030799.asp
(I know that there are much better pages than that, but I couldn't find
them at the moment). Adapters are available to connect to most other kinds
of SCSI as well.
-Rob
On Fri, 13 Jul 2001, Master of all that Sucks wrote:
Hi. I seem to find this connector with 50 pins in three rows in a D-shell
on my VAXservers and VAXstations. I even have one or two on my DECsystem
5840. Could someone tell me what they are? Three rows. 17 - 16 - 17.
Peace... Sridhar
3:52 p.m.
Sorry for the extra reply, but I found a much better webpage describing
this SCSI connector (if that is what it is).
http://www.pcguide.com/ref/hdd/if/scsi/cables_Connectors.htm has info on
just about all of the SCSI connectors I've heard of; the one you have is
SCSI-1 standard, before Apple decided to rip out half of the pins.
-Rob
On Fri, 13 Jul 2001, Master of all that Sucks wrote:
Hi. I seem to find this connector with 50 pins in three rows in a D-shell
on my VAXservers and VAXstations. I even have one or two on my DECsystem
5840. Could someone tell me what they are? Three rows. 17 - 16 - 17.
Peace... Sridhar
4:39 p.m.
The only problem is that my DECsystem 5840 doesn't have a SCSI
controller. It has three of these connectors, however.
Peace... Sridhar
On Fri, 13 Jul 2001, Rob Lion wrote:
Sorry for the extra reply, but I found a much better
webpage describing
this SCSI connector (if that is what it is).
http://www.pcguide.com/ref/hdd/if/scsi/cables_Connectors.htm has info on
just about all of the SCSI connectors I've heard of; the one you have is
SCSI-1 standard, before Apple decided to rip out half of the pins.
-Rob
On Fri, 13 Jul 2001, Master of all that Sucks wrote:
Hi. I seem to find this connector with 50 pins in three rows in a D-shell
on my VAXservers and VAXstations. I even have one or two on my DECsystem
5840. Could someone tell me what they are? Three rows. 17 - 16 - 17.
Peace... Sridhar
4:52 p.m.
On Fri, Jul 13, 2001 at 07:42:27PM -0400, Master of all that Sucks wrote:
Hi. I seem to find this connector with 50 pins in three rows in a D-shell
on my VAXservers and VAXstations. I even have one or two on my DECsystem
5840. Could someone tell me what they are? Three rows. 17 - 16 - 17.
it's the MFM "Extention" cable. you can put external MFM devices on it.
-brian
5:03 p.m.
On Fri, Jul 13, 2001 at 07:42:27PM -0400, Master of
all that Sucks wrote:
That's one *seriously* old VAXserver 3100 then. Only the very first ones
used MFM disks as I understand it (I've never actually seen one).
Zane
Hi. I seem to find this connector with 50 pins in three rows in a D-shell
on my VAXservers and VAXstations. I even have one or two on my DECsystem
5840. Could someone tell me what they are? Three rows. 17 - 16 - 17.
it's the MFM "Extention" cable. you can put external MFM devices on it.
-brian 
5:24 p.m.
On Fri, Jul
13, 2001 at 07:42:27PM -0400, Master of all that Sucks wrote:
That's one *seriously* old VAXserver 3100 then. Only the very first ones
used MFM disks as I understand it (I've never actually seen one).
Hi. I seem to find this connector with 50 pins in three rows in a D-shell
on my VAXservers and VAXstations. I even have one or two on my DECsystem
5840. Could someone tell me what they are? Three rows. 17 - 16 - 17.
it's the MFM "Extention" cable. you can put external MFM devices on it.
-brian
14 Jul
14 Jul
3:23 p.m.
Mine has SCSI disks. Still don't know what that connector is, though.
Peace... Sridhar
On Fri, 13 Jul 2001, Zane H. Healy wrote:
On Fri, Jul
13, 2001 at 07:42:27PM -0400, Master of all that Sucks wrote:
That's one *seriously* old VAXserver 3100 then. Only the very first ones
used MFM disks as I understand it (I've never actually seen one).
Zane
Hi. I seem to find this connector with 50 pins in three rows in a D-shell
on my VAXservers and VAXstations. I even have one or two on my DECsystem
5840. Could someone tell me what they are? Three rows. 17 - 16 - 17.
it's the MFM "Extention" cable. you can put external MFM devices on it.
-brian 
11:43 p.m.
On 14 Jul, Master of all that Sucks wrote:
Mine has SCSI disks. Still don't know what that
connector is, though.
Look at the PCB that the connector sits on. If there is a
HDC9224
MFM/floppy controller like in the VAXstation 2000 or on the RQDX3 your
question is answered.
--
tschuess,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz
13 Jul
13 Jul
5:06 p.m.
How about on my DS5840/VAX6000? Doesn't have MFM.
Peace... Sridhar
On Fri, 13 Jul 2001, Brian Hechinger wrote:
On Fri, Jul 13, 2001 at 07:42:27PM -0400, Master of
all that Sucks wrote:
Hi. I seem to find this connector with 50 pins in three rows in a D-shell
on my VAXservers and VAXstations. I even have one or two on my DECsystem
5840. Could someone tell me what they are? Three rows. 17 - 16 - 17.
it's the MFM "Extention" cable. you can put external MFM devices on it.
-brian
4:57 p.m.
How about on my DS5840/VAX6000? Doesn't have
MFM.
Peace... Sridhar
Possibly a pertek interface.
behemoth.linc.com NetBSD 1.5 pmax mipsel
11:55 p.m.
Hi !
On Fri, 13 Jul 2001, Brian Hechinger wrote:
On Fri, Jul 13, 2001 at 10:06:19PM -0400, Master of
all that Sucks wrote:
On then VAX 4000/10x and some MicroVAXes, this is used for the QBus, but you
have 2 of them then, one male and one female.
Pertec also matches, but there you also usually have 2 connectors.
Last case: serial multiplexer, but the DEC stuff used Centronic connectors for
that usually.
...Michael
--
visit http://www.bsdfans.org/ Home network powered by: NetBSD OpenBSD FreeBSD
Solaris HP-UX IRIX AIX MUNIX Tru64 Ultrix VMS SINIX Dolphin_Unix OpenStep MacOS
How about on my DS5840/VAX6000? Doesn't have MFM.
i don't know about DEC, but i know Sun used to use that connector for SCSI. 
6:58 p.m.
Sounds like a part of a DMB32 (?) for Decnet WAN conections.
The VAX 6000 I used to admin had one as part of Shared Medical Systems
worldwide DECnet network in the early ninetys.
On Fri, 13 Jul 2001, Master of all that Sucks wrote:
How about on my DS5840/VAX6000? Doesn't have MFM.
Peace... Sridhar
On Fri, 13 Jul 2001, Brian Hechinger wrote:
--
On Fri, Jul 13, 2001 at 07:42:27PM -0400, Master
of all that Sucks wrote:
Hi. I seem to find this connector with 50 pins in three rows in a D-shell
on my VAXservers and VAXstations. I even have one or two on my DECsystem
5840. Could someone tell me what they are? Three rows. 17 - 16 - 17.
it's the MFM "Extention" cable. you can put external MFM devices on it.
-brian
17 Jul
17 Jul
4:27 a.m.
On Saturday 14 July 2001 02:06, Master of all that Sucks wrote:
How about on my DS5840/VAX6000? Doesn't have
MFM.
Peace... Sridhar
On Fri, 13 Jul 2001, Brian Hechinger wrote:
> On Fri, Jul 13, 2001 at 07:42:27PM -0400, Master of all that Sucks wrote:
> > Hi. I seem to find this connector with 50 pins in three rows in a
> > D-shell on my VAXservers and VAXstations. I even have one or two on my
> > DECsystem 5840. Could someone tell me what they are? Three rows. 17
> > - 16 - 17.
>
> it's the MFM "Extention" cable. you can put external MFM devices on
it.
>
> -brian
You are right. The VS3100 doesn't have MFM either. That type connector was
used for a lot of things. Most likely SCSI on the MV3100 and VS3100. I
think the 8-port serial card on the MV3100 used a centronics type connector
but may have also used one of those. If you have a male and a female it may
be the qbus extention or TSV05 cab kit. Also printer interfaces used that
connector. Only the old MV-I, MV-II, MV2000, etc used it for MFM or tape
although I suppose any q-bus vax could have an old MFM or tape controller or
any of the above on it.
PW
9:04 a.m.
I think the 8-port serial card on the MV3100 used a
centronics type
connector
but may have also used one of those.
Confusing matters somewhat may be the names, on my uVII the
centronics connector as described here connects to a "H3100"
adaptor. That was the name for the 8 port Serial card.
John A.
13 Jul
13 Jul
6:07 p.m.
Master of all that Sucks skrev:
Hi. I seem to find this connector with 50 pins in
three rows in a D-shell
on my VAXservers and VAXstations. I even have one or two on my DECsystem
5840. Could someone tell me what they are? Three rows. 17 - 16 - 17.
SCSI most probably. Or did the VAX 3100 use that HONDA68 connector?
--
En ligne avec Thor 2.6a.
I use OpenBSD 'coz it has a cool blowfish logo. The other BSDs look satanic.
- Anonymous Coward
14 Jul
14 Jul
6:40 a.m.
On 13 Jul, Master of all that Sucks wrote:
Hi. I seem to find this connector with 50 pins in three rows in a D-shell
on my VAXservers and VAXstations. I even have one or two on my DECsystem
5840. Could someone tell me what they are? Three rows. 17 - 16 - 17.
On the
older babyVAXen like the VAXserver 3100 this connector was an
MFM interface to connect external MFM drives. On newer MicroVAXen there
are two of these connectors with a QBus interface on them. I never saw
a babyVAX with build in Pertec interface and the connectors for SCSI
where HD SubD 68 or normal Centronics 50 pin. Serial multiplexers used
36 (?) pin Centronics connectors.
I don't know what the connectors on the biger machines may be used for.
--
tschuess,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz
8408
days inactive
8412
days old
18 comments
12 participants
participants (12)
-
allain＠panix.com -
dittman＠dittman.net -
healyzh＠aracnet.com -
jkunz＠unixag-kl.fh-kl.de -
linc＠thelinuxlink.net -
michael＠unixiron.org -
optimus＠canit.se -
peckrwood＠usa.net -
rnlion＠its.caltech.edu -
thompson＠mail.athenet.net -
vance＠ikickass.org -
wonko＠arkham.ws