SCSI jumpers!!

[machinehead]

Does anyone know how to set jumpers on a SCSI drive to use 2 HDs?
I have the address jumpers down, but what is "drive motor enable" and "parity/no parity" mean?
Also, OS 3.1 will not read or save to my
Seagate Barracuda 15150n drive. I have tried every jumper combination that I can think of and nothing works. Maybe the drive is bad?
HD tool box will not read the drive info either.
Help meeeeeee. :-x  :-x

[iamaboringperson]

SCSI jumpers!!

You got my attention!! :-D

Does anyone know how to set jumpers on a SCSI drive to use 2 HDs?

Yes.

I have the address jumpers down, but what is "drive motor enable" and "parity/no parity" mean?

Only adjust the address an termination! Parity is for error checking.

HD tool box will not read the drive info either.

I have an IBM drive that just won't work with my A 4000 T SCSI controller.

It is possible I guess that some models don't work.

Do you have other SCSI devices that do work?
Can you test the drives on other computers?

[zipper]

I've never needed to adjust other jumpers than SCSI ID and one drive to supply term power to my CSPPC SCSI bus. Well, my SG supplies the termination for the other end, as they used to be the only ones to have that option for 68pin bus some years ago.

[machinehead]

My original 40 MB Quantum works great! The external SCSI CD works great. Is there some 3rd party HD installer that works with the A3000?

Thanks for the jumper info!
Dave

[melott]

I've not had any luck with IBM drives on an Amiga.
I guess some will work and some won't.
As for the jumpers, usually all you have to set is
address and termination. Trial & Error.

You can try 'HDInstTools' from Aminet. It work
well on most OS's, You just have to set the Icon
information to the name of your SCSI controller.

[desborough]

1) To eliminate a faulty HD try connecting just the Seagate drive, and running HD toolbox to see if it can find the drive now, hardware conflicts are common with SCSI.
2) Make sure you are not using the same device ID as the SCSI controller.
3) Make sure the last devices on the internal and external chains are terminated and all other devices including the SCSI contrroller are unterminated.

Just found this site. thought it might help. :-)

[Cyberus]

iamaboringperson wrote:

SCSI jumpers!!

You got my attention!! :-D

i've got a SCSI tshirt, does that count?

/hides

[Snuden]

machinehead wrote:
Does anyone know how to set jumpers on a SCSI drive to use 2 HDs?
I have the address jumpers down, but what is "drive motor enable" and "parity/no parity" mean?

The different scsi units must each have a unique address on the scsi bus. The controller is always address 7, and your two harddrives could be 0 and 1. Drive motor enable should be set to 1. It is most likely used to control wether or not the drive waits for a Start Unit command before it spins up. Parity is used for error correction and should always be enabled. Have you remembered to terminate the scsi bus correctly and enabled the supply termination power jumper on your scsi units, if they have one that is?

Also, OS 3.1 will not read or save to my
Seagate Barracuda 15150n drive. I have tried every jumper combination that I can think of and nothing works. Maybe the drive is bad?

Could be. If you have access to a pc with scsi you can test the drive there.

HD tool box will not read the drive info either.
Help meeeeeee. :-x  :-x

That most likely though is because HDToolbox isn't configured to talk to the driver for your scsicontroller and instead just uses scsi.device.

[iamaboringperson]

Cyberus wrote:

iamaboringperson wrote:

SCSI jumpers!!

You got my attention!! :-D

i've got a SCSI tshirt, does that count?

/hides

Yes, that counts too!!

[Herewegoagain]

machinehead wrote:
Does anyone know how to set jumpers on a SCSI drive to use 2 HDs?
I have the address jumpers down, but what is "drive motor enable" and "parity/no parity" mean?
Also, OS 3.1 will not read or save to my
Seagate Barracuda 15150n drive. I have tried every jumper combination that I can think of and nothing works. Maybe the drive is bad?
HD tool box will not read the drive info either.
Help meeeeeee. :-x  :-x

Dave, I'm very sorry that I haven't sent you that info yet.  As soon as I saw this thread I knew it was you.  I'll try and pop the case on the Amiga tonight and see how mine are set.   What was the other drive you got? Or were they both 15150's?

[machinehead]

These are both 15150n Seagate Barracudas. In the meantime, I downloaded HDtoolbox v. 6.9 from Aminet. This installer tells me the drives are not supported.
This could be the case as mellot mentioned with the IBM drives.

[zipper]

I have used 5 different IBM drives: SCSI3(narrow), UWSCSI and U2WSCSI with my CSPPC w/o any problems...

[Herewegoagain]

I'm almost sure that's the same drive as I have in my A3000... but the more I think about it (it's been a while since I installed it), the more I think mine may be a Hawk drive instead of a Barracuda.  I'll still look and see.

[Herewegoagain]

Well Dave, I've looked at my drives and the one that I thought was a 15150N (Barracuda) is actually a 15230N (Hawk).  I have a few 15150N's but they were all 68pin and at one time they use to be in my PC.  Sorry to tell you the wrong thing.  The other drive I have in there is a Seagate ST34371N (Barracuda).   If you cannot get that one to work for you let me know, and I'll pull the second Hawk drive out of my machine and swap it to you for one of yours.  I basically just had it there for a backup anyway.

In the mean time, here are the jumper settings according to Seagates website:

http://www.seagate.com/support/disc/scsi/st15150n.html

Let me know what the results are.  

Tony