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10 July 2020, 03:03
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#1 |
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Registered User
Join Date: Oct 2008
Location: Australia
Age: 55
Posts: 222
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SCSI Terminating resistors
Hi Guys, I need to purchase some scsi terminating resistors for my Amiga 3000 to go on the MB. What type do I require besides them being 8 pin? Thanks, Stephen Last edited by vk3heg; 10 July 2020 at 04:14. Reason: adding text |
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10 July 2020, 03:57
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#2 |
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Junior Member
Join Date: Jan 2002
Location: PDX
Age: 62
Posts: 2,395
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I think there are two kinds of terminators:
1) The kind you are talking about go onto the SCSI device itself. ALSO 2) There are the kinds that go onto the ends of cables too, basically after the last SCSI device. Not sure if there are any of the 50-pin type any longer without salvaging something, I've seen the kind go onto the Fast SCSI cables however. Doing a quick Google search brings up a lot of matches. scsi termination resistor |
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10 July 2020, 07:37
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#3 |
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Join Date: Jul 2003
Location: Helsinki / Finland
Age: 43
Posts: 9,861
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http://www.amigawiki.de/dnl/schematics/A3000.pdf page 15.
You could also just plug in a 25pin external active terminator to the rear scsi port. This is what I have done with mine. |
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10 July 2020, 10:33
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#4 |
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Registered User
Join Date: Dec 2016
Location: East Kilbride, Scotland
Posts: 451
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https://www.mouser.co.uk/ProductDeta...4608X-104-331L
Dual terminated Isolated resistor pack - 8 pins. |
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12 July 2020, 05:41
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#5 |
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Registered User
Join Date: Aug 2008
Location: London / Canada
Posts: 781
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I took the resistors from an old SCSI hard drive that was dead and put them on my A3000 motherboard and they work fine. I guess i got lucky finding them on that drive. My rev 6 A3000 came with the resisters already on it, my rev 9 didn't have them...so I added them.
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12 July 2020, 12:18
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#6 |
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Semi-Retired
Join Date: Mar 2012
Location: Leiden / The Netherlands
Posts: 1,999
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Added an external SCSI 25 pins terminator. Which gets swapped sometimes with an external SCSI tower. I rather do that then to open the Amiga every time I change something externally.
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14 July 2020, 08:47
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#7 |
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Registered User
Join Date: Oct 2008
Location: Australia
Age: 55
Posts: 222
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Thanks guys. Now I just need to find a place that either has stock or doesn't want 1000% times more in postage than what they are worth.
My A3000 is naked at the moment, so access to the mb is not a issue. #-) Last edited by vk3heg; 14 July 2020 at 08:48. Reason: Spelling. |
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