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Author Topic: 68 pin SCSI in Amiga  (Read 2798 times)

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Offline spaceman88Topic starter

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68 pin SCSI in Amiga
« on: July 07, 2009, 11:59:25 PM »
Hi,
Will an Amiga work with a 68 pin SCSI hard drive (2.1 Gig, Seagate) if you use a 68 to 50 pin adaptor? A shop about 50 miles away is giving a couple away, if I go pick them up!
 

Offline Matt_H

Re: 68 pin SCSI in Amiga
« Reply #1 on: July 08, 2009, 12:09:47 AM »
Should be fine.
 

Offline spaceman88Topic starter

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Re: 68 pin SCSI in Amiga
« Reply #2 on: July 08, 2009, 01:25:07 AM »
Quote from: Matt_H;514879
Should be fine.


Thanks, I thought it should be OK , but I never heard of an Amiga user doing it.
Len
 

Offline nishtek

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Re: 68 pin SCSI in Amiga
« Reply #3 on: July 08, 2009, 02:11:44 AM »
Will work great.
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Offline LoadWB

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Re: 68 pin SCSI in Amiga
« Reply #4 on: July 08, 2009, 06:16:37 AM »
I've used a couple with Zip drives and CD-ROMs, worked fine.  But I cannot vouch for how well they work with hard drives.  I would assume that they should work fine, considering.

You might want to make sure you are using ones which terminate the unused lines.  I have used ones which I pulled from narrow tape drives installed in Dell servers with 68-pin SCSI, made by Datamate.  They work in both directions, too: I have one in a narrow SCSI controller in a Sun IPX Station running a Western Digital 9GB 68-pin drive.
 

Offline klx300r

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Re: 68 pin SCSI in Amiga
« Reply #5 on: July 08, 2009, 07:12:52 AM »
yep..no problem!
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Offline zipper

Re: 68 pin SCSI in Amiga
« Reply #6 on: July 08, 2009, 10:37:06 AM »
Using 3 of them; u160 and u320, no problems, SG and IBM 9 - 36 Gigs but on 68pin cable of CSPPC. Had also 50pin "SCSI3" with adapter on 68pin.
 

Offline orange

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Re: 68 pin SCSI in Amiga
« Reply #7 on: July 08, 2009, 11:52:21 AM »
I had problems when using simple adapter. HDD didn't work, just like  LoadWB said.
Better sorry than worry.
 

Offline mdivancic

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Re: 68 pin SCSI in Amiga
« Reply #8 on: July 08, 2009, 12:56:39 PM »
Quote from: orange;514937
I had problems when using simple adapter. HDD didn't work, just like  LoadWB said.


It will depend on the adapter and the hard drive. Simple adapters without termination require drives that have a jumper setting to switch them to narrow mode. On drives that have it the jumper is usually labeled SS or SW. I've got three large drives running using these $1 adapters, but some drives just don't work, even with the jumper set.

The more expensive adapters with termination should work with all drives, but I haven't tried one of these yet.
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Offline save2600

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Re: 68 pin SCSI in Amiga
« Reply #9 on: July 08, 2009, 01:38:42 PM »
As Mikey said, not all 68-pin drives seem to work with the adapters. I know because I've tried about a half a dozen of them. I currently use a Quantum 16gb 68-pin with my 2060 card though with no problems. The better 50<>68 pin adapters have the termination you may need...
 

Offline ChaosLord

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Re: 68 pin SCSI in Amiga
« Reply #10 on: July 08, 2009, 01:48:22 PM »
Any idea where I can buy one of these adapters that terminates the unused lines?
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Offline save2600

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Re: 68 pin SCSI in Amiga
« Reply #11 on: July 08, 2009, 06:02:21 PM »
« Last Edit: July 08, 2009, 06:09:15 PM by save2600 »
 

Offline Zac67

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Re: 68 pin SCSI in Amiga
« Reply #12 on: July 08, 2009, 07:07:49 PM »
It might be easier to switch to 68pin cabling incl. terminators and use adaptors for the 50pin devices which should be still be available, esp. when you're planning to add more than one wide device.
 

Offline orange

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Re: 68 pin SCSI in Amiga
« Reply #13 on: July 08, 2009, 08:00:32 PM »
hm, would 68pin cable and terminator eliminate the need for 'advanced' adapter (or HDD with jumper)?
Better sorry than worry.
 

Offline Zac67

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Re: 68 pin SCSI in Amiga
« Reply #14 on: July 08, 2009, 08:36:26 PM »
Wide cable terminators are usually no problem to obtain and once the bus is terminated in whole there's no need for 'half-terminators' any more. You can also use built-in terminators on the end drives instead of cable terminators. OTOH most wide drives run fine on a narrow bus, there are few refusing to (esp. IBMs).