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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Jose on June 07, 2003, 02:30:35 AM
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Hi guys. Has anyone used an UW-SCSI hd on a SCSCI2 controler?. Is the UW version compatible with earlier versions? I think there are some adaptors around, are those just pin adaptors or do they have a small circuit to convert protocols?
The idea is to get a good 2.5" SCSI disk in my A1200. Maybe a 3.5" but I guess that won't be possible without modifiing the case.
I notced that the sizes of 2.5" ones are really small though, so I'm stuck anyway :-x
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All SCSI devices should be backward compatible with older SCSI standards. Problem is that, AFAIK, UW-SCSI uses 64 pin and SCSI-2 uses 50 pin. You'll need an adaptor. But the protocol doesn't need converting.
My advice - get a cheap 2.5" IDE drive and an IDE->SCSI converter. It's cheaper and better than a SCSI one. Don't know if such a converter will fit with a 2.5" drive in an A1200 desktop case, though...
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My advice - get a cheap 2.5" IDE drive and an IDE->SCSI converter. It's cheaper and better than a SCSI one. Don't know if such a converter will fit with a 2.5" drive in an A1200 desktop case, though...
The controller native in the A1200 is IDE. I am assuming that Jose is speaking about a SCSI card connected to the A1200 in addition to the IDE on the motherboard.
I have basically the same question. With an adapter UW-SCSI controllers can handle 50 pin SCSI1 and SCSI2 drives, but can the older SCSI cards types 1 and 2 with 50 pins handle the 68 pin UW drives? 50 pin SCSI drives are getting hard to find for the old A4000
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it's surely possible to use a UW scsi drive on a Scsi2 adapter. I'm using one seagate 68-pin UW and one IBM 80-pin U2W drive on my draco with a 80 to 68/50 adapter right now. The problem you would have is that this adapter is quite large to fit in a 1200 case. The 68 to 50 ones are alot smaller though and I think you could use one of those. There is no circuitry at all on those adapter, it's just pin-to-pin conversion as the protocol is still the same. Another problem I can think of is that scsi disks tend to run faster than IDE ones and thus produce more heat. I have no clue about the 2.5" ones though, as I have never seen one.
Justin
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Right, thanks for the info. Haven't been much on the net ultimately and so the late reply.
NOw I just need to find a good SCSI drive for my A1200.
The Blizzard SCSI kit, wich is what I have, can handle around 10Mb I'm told, (or is that 10MB :-o ), so it should be more than enouph for a CLassic A1200:-D