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Help with getting an IBM DDRS-34560 working

BetaC

Well-known member
As per the title, I’m trying to figure out why this 4.5GB SCSI drive doesn’t like showing up to any of my pre-G3 hardware. I’m using a passive adapter, and I’ve tried multiple different configurations for the jumpers, but nothing seems to work when 50 pins are involved.
 

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BetaC

Well-known member
How do I find an adapter that has that feature? I’m currently using a mono price adapter, which doesn’t specify.
 

trag

Well-known member
@BetaC There was also a long thread about adapters for SCA drives (wide 80 pin drives) and upper byte termination several years ago. Maybe more than one. The end point was that @max1zzz ended up designing and building some adapters. I think they're long since gone. But it might be a useful read if you can find the thread.

They're difficult to find, usually. And sometimes sellers claim they have upper byte termination and they don't. If there's just two SCSI connectors and maybe a few jumpers on the adapter, then there's no components providing any termination...
 

BetaC

Well-known member
@BetaC There was also a long thread about adapters for SCA drives (wide 80 pin drives) and upper byte termination several years ago. Maybe more than one. The end point was that @max1zzz ended up designing and building some adapters. I think they're long since gone. But it might be a useful read if you can find the thread.

They're difficult to find, usually. And sometimes sellers claim they have upper byte termination and they don't. If there's just two SCSI connectors and maybe a few jumpers on the adapter, then there's no components providing any termination...
Thank you for the advice, I ended up just giving the drive away to a coworker who has a late PCI Mac that can just use it. Prices for the adapters I saw just made a scsi to flash solution look less expensive.
 

max1zzz

Well-known member
The end point was that @max1zzz ended up designing and building some adapters. I think they're long since gone. But it might be a useful read if you can find the thread.
I actually redesigned the adapters a couple of years back and still sell them :)
£13 each or £12 if you buy more than one. International shipping is expensive these days though.

There is a thread in the trading section though it's pretty buried now, I really need to set up a online store at some point....
 
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