1 Mar
2014
1 Mar
'14
1:44 a.m.
Hi!
I managed to netboot NetBSD 6.1.3 in my HP 9000/375.
Its external HD shows major failure (PCB, I suspect), so no local disk
by now :(
After some repairs, the 9121D passes all tests (confidence, and the ones
performed setting HPIB address and shorting the J7 test pin).
But when I connect it to the 375, I don't see the 9121 in the initial hw
list and I've not been able to figure out how to address it with NetBSD.
1) The SCSI/HP-IB and the HP-IB ports are equivalent?
2) The 9121 must be set to some "special" HP-IB address?
3) On the processor card, under the SCSI/HP-IB port, there's a 50pin
connector, which looks like a SCSI-50. Can I connect there a standard
SCSI disk?
Thanks!
--
Retromuseum:
http://www.supervinx.com/Retrocomputer
You can reach me at:
http://www.youtube.com/supervinx
http://www.myspace.com/supervinx
http://www.facebook.com/supervinx
1 Mar
1 Mar
10:55 p.m.
________________________________
From: supervinx <supervinx at libero.it>
To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
Sent: Saturday, March 1, 2014 1:44 AM
Subject: HP 9000/375, HP9121D and NetBSD
Hi!
I managed to netbootNetBSD 6.1.3 in my HP 9000/375.
Its external HD shows major failure (PCB, I suspect), so no local disk
by now :(
After some repairs, the 9121D passes all tests (confidence, and the ones
performed setting HPIB address and shorting the J7 test pin).
But when I connect it to the 375, I don't see the 9121 in the initial hw
list and I've not been able to figure out how to address it with NetBSD.
1) The SCSI/HP-IB and the HP-IB ports are equivalent?
2) The 9121 must be set to some "special" HP-IB address?
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
3) On the processor card, under the SCSI/HP-IB port, there's a 50pin
connector, which looks like a SCSI-50. Can I connect there a standard
SCSI disk?
If it does not say SCSI? Don't hook anything SCSI to it.? There Com board uses the
same Connection and if you connect? a SCSI? Device? you will see smoke and lots of
not good things will happen.? I? Know first hand.? Many years ago when these where
like gold,. I took one apart to clean it up.? Putting it back together I hook the SCSI
cable to the wrong connector,? I believe it was $1500.00 mistake
- Jerry
>>>
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Thanks!
--
Retromuseum:
http://www.supervinx.com/Retrocomputer
You can reach me at:
http://www.youtube.com/supervinx
http://www.myspace.com/supervinx
http://www.facebook.com/supervinx
2 Mar
2 Mar
1:39 p.m.
3) On the processor card, under the SCSI/HP-IB port,
there's a 50pin=0A=
connector, which looks like a SCSI-50. Can I connect there a standard=0A=
SCSI disk?=0A=
=0A=
If it does not say SCSI=A0 Don't hook anything SCSI to it.=A0 There Com boa=
rd uses the=0A=
same Connection and if you connect=A0 a SCSI=A0 Device=A0 you will see smok=
e and lots of=0A=
not good things will happen.=A0 I=A0 Know first hand.=A0 Many years ago whe=
n these where =0A=
like gold,. I took one apart to clean it up.=A0 Putting it back together I =
hook the SCSI =0A=
cable to the wrong connector,=A0 I believe it was $1500.00 mistake=0A=
YEs, HP used the 50 pin microribbon connector (liek a SCSI-1 connector)
for the RS232/RS422 port some HP9000s (certainly HP9000/200 machines) and
temrinals. The sstem power lines (+5V, +12V, -12V) are also on that
connector, which is useful (a)( as testpoints for them and (b) as a
powersurce for interface converfters such as current loop).
Therefore conenctign a SCSI device to that connector generally lets majic
smoke out of the SCSI device. I am not sure if power lines get shorted
together ro to ground (they may well do), an HP PSU should stand that, but..
Incidentally, on the HP900/200 DIO cards this 50 pin microribbon
conenctor is sued both for the RS232 port and for the GPIO (no, I do not
mean GPIB) 16 pin parallel I/O port. The difference is that the RS232
conenctor has spring clip latches to hold the plug in, the GPIO one has
screw-down jackposts. But I would have expected better from HP!
-tony
1:50 p.m.
On 03/01/2014 01:44 AM, supervinx wrote:
1) The SCSI/HP-IB and the HP-IB ports are equivalent?
...
3) On the processor card, under the SCSI/HP-IB port, there's a 50pin
connector, which looks like a SCSI-50. Can I connect there a standard
SCSI disk?
There's a hint in this thread from 2006
<http://www.classiccmp.org/pipermail/cctech/2006-April/019783.html> that
for the 9000/345 at least, there's a daughter card / controller that may
switch the function of the Centronics 50 connector from SCSI to "high
speed HP-IB." I know my 9000/380 system board has the C50 connector
labeled "SCSI/HS HP-IB," but haven't investigated further.
This is distinct from the C50 connector in a much older DIO card in my
/380 that's defintely a serial port option. I'm sure connecting a SCSI
device to that would indeed do the bad things that Jerry Wright mentioned...
You might want to check the 9000/375 installation guide. Link to
hpmuseum.net <http://www.hpmuseum.net/exhibit.php?hwdoc=1055>.
Good luck!
--Steve.
4:33 p.m.
Well, folks... so the story goes...
On the back, there were a HP-IB connector, with the lable "SCSI/ HS
HP-IB".
Inside, it's connected to a daughterboard and through a flat cable to
the processor card mainboard.
Nearby, on the MB, there's a 50pin connector.
I guessed it was deactivated by plugging the daughterboard...
I checked it with a multimeter: all odd pins are grounded, and the even
numbered grounded pins are compatible with a SCSI-1 connector.
But... the connector has a reversed notch!!!
I mean that pluggin' a standard notched SCSI flat cable connects pin 1
to pin 50. This is confirmed lookin' on the bottom of the board, where
pins are numbered...
Avoiding this trap is easy: cut the notch on the cable and connect it
the right way.
Just to be sure, when everything was powered down, I connected the cable
and a SCSI disk, checking connections. Everything was OK.
So I prepared a 1Gb SCSI disk, putting there an image of HP-UX 9.03,
coming from a 9000/425t
I crossed my fingers and powered it.
After having figured out the right jumpers position (I needed
TErmination, ParityEnable, TerminationPower), besides the 1Z netboot
options, appeared the new SCSI disk :)
I booted HP-UX, reconfigured it for the new machine (hostname and ip
address) and everything went well!
HP-UX made no complain at all :P
Here there are two preliminary screenshots...
http://www.supervinx.com/Retrocomputer/HP/300/Telnet_Login.png
http://www.supervinx.com/Retrocomputer/HP/300/Vue.png
Last step is to connect the 9121D.
NetBSD doesn't see it...
Can't figure why the connector had a reversed notch. Holy smoke
production???? :D
Thank you all!
3 Mar
3 Mar
1:45 a.m.
From: "supervinx" <supervinx at libero.it>
Sent: Monday, March 03, 2014 1:33 AM
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Subject: Re: HP 9000/375, HP9121D and NetBSD
[... snip ...]
I checked it with a multimeter: all odd pins are grounded, and the even
numbered grounded pins are compatible with a SCSI-1 connector.
But... the connector has a reversed notch!!!
I mean that pluggin' a standard notched SCSI flat cable connects pin 1
to pin 50. This is confirmed lookin' on the bottom of the board, where
pins are numbered...
That happened to me too! Long ago I won an HP 21MX front panel
on eBay. I added a "blinkenlight" Core and I/O board to it using the
50-wire console connection cable. After soldering all wires, I took
my beeper to check that I did everything correctly ...
It was then that I found out that the red strip along the ribbon cable
was *NOT* pin 1, but pin 50 !! I had to start all over again, grrrr.
Till then I always thought that the red stripe (or any marking) denotes
pin #1. Nowadays I do not take that for granted, but check (twice)!
- Henk
7 Mar
7 Mar
8:40 a.m.
On Mon, Mar 3, 2014 at 4:45 AM, Henk Gooijen <henk.gooijen at hotmail.com>wrote:
From: "supervinx" <supervinx at
libero.it>
Sent: Monday, March 03, 2014 1:33 AM
To: "General Discussion: On-Topic and Off-Topic Posts" <
cctalk at classiccmp.org>
Subject: Re: HP 9000/375, HP9121D and NetBSD
[... snip ...]
This is quite an interesting discussion, as I, too, have a 9000/375, and I
have the machine maxed out, on RAM, as well. I haven't managed to get it
going, yet, due to a combination of lack of time, and disk issues.
Do you think that a bootable disk could be prepared by a non-HP machine? I
have NetBSD running in a number of locations, and could definitely use
that, as a helper. However, I have no other HP equipment.
- Alex
I checked it with a multimeter: all odd pins are grounded, and the even
numbered grounded pins are compatible with a SCSI-1 connector.
But... the connector has a reversed notch!!!
I mean that pluggin' a standard notched SCSI flat cable connects pin 1
to pin 50. This is confirmed lookin' on the bottom of the board, where
pins are numbered...
That happened to me too! Long ago I won an HP 21MX front panel
on eBay. I added a "blinkenlight" Core and I/O board to it using the
50-wire console connection cable. After soldering all wires, I took
my beeper to check that I did everything correctly ...
It was then that I found out that the red strip along the ribbon cable
was *NOT* pin 1, but pin 50 !! I had to start all over again, grrrr.
Till then I always thought that the red stripe (or any marking) denotes
pin #1. Nowadays I do not take that for granted, but check (twice)!
- Henk
8 Mar
8 Mar
5:14 a.m.
From: "J. Alexander Jacocks" <jjacocks at gmail.com>
Sent: Friday, March 07, 2014 5:40 PM
To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>
Subject: Re: HP 9000/375, HP9121D and NetBSD
On Mon, Mar 3, 2014 at 4:45 AM, Henk Gooijen
<henk.gooijen at hotmail.com>wrote:
Alex,
have a look at http://www.hp9845.net/9845/projects/hpdrive/
maybe that's something you can use. You only need an old PC and
a compatible GP-IB card (ISA or PCI, depending on the PC slots)
- Henk
From: "supervinx" <supervinx at
libero.it>
Sent: Monday, March 03, 2014 1:33 AM
To: "General Discussion: On-Topic and Off-Topic Posts" <
cctalk at classiccmp.org>
Subject: Re: HP 9000/375, HP9121D and NetBSD
[... snip ...]
This is quite an interesting discussion, as I, too, have a 9000/375, and I
have the machine maxed out, on RAM, as well. I haven't managed to get it
going, yet, due to a combination of lack of time, and disk issues.
Do you think that a bootable disk could be prepared by a non-HP machine?
I
have NetBSD running in a number of locations, and could definitely use
that, as a helper. However, I have no other HP equipment.
- Alex
I checked it with a multimeter: all odd pins are grounded, and the even
numbered grounded pins are compatible with a SCSI-1 connector.
But... the connector has a reversed notch!!!
I mean that pluggin' a standard notched SCSI flat cable connects pin 1
to pin 50. This is confirmed lookin' on the bottom of the board, where
pins are numbered...
That happened to me too! Long ago I won an HP 21MX front panel
on eBay. I added a "blinkenlight" Core and I/O board to it using the
50-wire console connection cable. After soldering all wires, I took
my beeper to check that I did everything correctly ...
It was then that I found out that the red strip along the ribbon cable
was *NOT* pin 1, but pin 50 !! I had to start all over again, grrrr.
Till then I always thought that the red stripe (or any marking) denotes
pin #1. Nowadays I do not take that for granted, but check (twice)!
- Henk
3902
days inactive
3909
days old
7 comments
6 participants
participants (6)
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ard＠p850ug1.demon.co.uk -
classiccmp＠crash.com -
g-wright＠att.net -
henk.gooijen＠hotmail.com -
jjacocks＠gmail.com -
supervinx＠libero.it