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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: lauri.lotvonen on October 19, 2009, 09:26:25 PM

Title: IDC50 to DB25
Post by: lauri.lotvonen on October 19, 2009, 09:26:25 PM
My question is about connecting a external cd-rom having a IDC50 connector
to amiga 1200 Blizzard SCSI IV kit, DB25 female port.
Is there such a cable or adapter that does this : IDC50 male to DB25 female ?
Or do I have to try and solder it myself ? Thanks :)
Title: Re: IDC50 to DB25
Post by: meega on October 19, 2009, 09:42:06 PM
Quote from: lauri.lotvonen;526546
IDC50 male to DB25 female ?


There is such a thing.

http://www.qvs.com/internal-adaptor.asp

There are bound to be others.
Title: Re: IDC50 to DB25
Post by: Damion on October 19, 2009, 09:42:19 PM
Quote from: lauri.lotvonen;526546
My question is about connecting a external cd-rom having a IDC50 connector
to amiga 1200 Blizzard SCSI IV kit, DB25 female port.
Is there such a cable or adapter that does this : IDC50 male to DB25 female ?
Or do I have to try and solder it myself ? Thanks :)


Something like this (http://www.computercablesource.com/scsi-adapter-db-25-female-with-pc-l-bracket-to-idc-50-male-external-to-internal-se-895.html)? (Couldn't find one with a female DB25, but this would work with an adapter.)
Title: Re: IDC50 to DB25
Post by: meega on October 19, 2009, 09:53:31 PM
I think you're asking for the wrong thing though... don't you want an IDC50 female to DB25 male connecting cable?
Title: Re: IDC50 to DB25
Post by: Zac67 on October 19, 2009, 10:01:34 PM
An external drive is bound to have a Centronics style connector - if you need a DB25 to Centronics50 cable, I've got a few spares. I could probably cram it into a letter envelope for 3 € to Finnland.
(http://upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Centronics_50_SCSI_connector.JPG/240px-Centronics_50_SCSI_connector.JPG)
Title: Re: IDC50 to DB25
Post by: amiga92570 on October 19, 2009, 10:09:58 PM
http://www.computercablesource.com/scsi-adapter-db-25-female-with-pc-l-bracket-to-idc-50-male-external-to-internal-se-895.html
Title: Re: IDC50 to DB25
Post by: zipper on October 20, 2009, 05:21:24 AM
http://www.damicon.fi/scsi/index.html ? (google...)
Title: Re: IDC50 to DB25
Post by: lauri.lotvonen on October 20, 2009, 07:53:35 AM
Quote from: meega;526551
I think you're asking for the wrong thing though... don't you want an IDC50 female to DB25 male connecting cable?
Sorry, I think youre right, so I need that cable.Anyone ?

So my setup would be like this :
I have a few year old usb 2.0 external cd-rom for my pc, I opened it up and there is just an ordinary IDC50 male port connected to the usb adaptor, and some power cables going to actual cd-rom. So I would get rid of the usb adaptor and connect IDC50 male port directly to the SCSI kit DB25 female port. Could this work, the actual cd-rom is just an ordinary SCSI device..

some pics :

http://pho.to/get-shared-image/7A06161E-B78B-0AD4-0D23-95FD7CF00538.jpg

http://pho.to/get-shared-image/25B9EA93-6E81-3914-3530-46001603BB7B.jpg

http://pho.to/get-shared-image/76A5FECF-4FED-2B64-8D40-F4BDFDA9C324.jpg
Title: Re: IDC50 to DB25
Post by: elginseam on October 20, 2009, 08:50:42 AM
The last photograph shows only a 40pin ribbon cable. I would suggest it is a USB to IDE interface not SCSI.
Title: Re: IDC50 to DB25
Post by: lauri.lotvonen on October 20, 2009, 09:44:25 AM
Seems like cd-rom is a IDE , not SCSI...
this get's a "little off-topic, but can IDE be connected to SCSI ?
Or should I buy a IDE splitter, and connect the cd-rom where my hard drive is connected. (talking about A1200).
Title: Re: IDC50 to DB25
Post by: meega on October 20, 2009, 11:06:04 AM
I think a buffered 4-way IDE adapter (with relevant software) would likely be the best option. You might then fit a slimline CD/DVD drive internally in the A1200 (they are incredibly cheap these days - you might even get given one for free by some kind soul), and you also get the ability to add other IDE devices if you want.
Title: Re: IDC50 to DB25
Post by: ferix on October 20, 2009, 11:15:24 AM
I don't know the Blizzard's pinot, but if It's the same as the one of the classic macs, there are lots of adapters.
DB25 scsi where used for years on old macs, and there were adapters of any type.

 (http://www.computercablesource.com/scsi-adapter-db-25-female-with-pc-l-bracket-to-idc-50-male-external-to-internal-se-895.html)
Title: Re: IDC50 to DB25
Post by: meega on October 20, 2009, 11:39:22 AM
Quote from: ferix;526599
I don't know the Blizzard's pinot,


It's standard.
Title: Re: IDC50 to DB25
Post by: ferix on October 20, 2009, 12:30:22 PM
Quote from: meega;526601
It's standard.
Well, I guessed It. ;)
Title: Re: IDC50 to DB25
Post by: lauri.lotvonen on October 20, 2009, 04:46:10 PM
Quote from: meega;526597
I think a buffered 4-way IDE adapter (with relevant software) would likely be the best option. You might then fit a slimline CD/DVD drive internally in the A1200 (they are incredibly cheap these days - you might even get given one for free by some kind soul), and you also get the ability to add other IDE devices if you want.

Would a laptop cd-drive do the job, I have plenty lying around somewhere..?
And for the IDE adapter, this one : http://amigakit.leamancomputing.com/catalog/product_info.php?cPath=42&products_id=532

BTW,thanks a lot you all have been very helpfull ! :)
Title: Re: IDC50 to DB25
Post by: kickstart on October 20, 2009, 06:15:28 PM
For use two dispositives, like hd+cdrom or cf+cdrom, use the native ide interface of the a1200, just only need a 2,5 to 3,5 cable, its cheaper and runs fine.
Title: Re: IDC50 to DB25
Post by: lauri.lotvonen on October 20, 2009, 09:34:57 PM
Quote from: kickstart;526659
For use two dispositives, like hd+cdrom or cf+cdrom, use the native ide interface of the a1200, just only need a 2,5 to 3,5 cable, its cheaper and runs fine.
Is this what you mean : http://amigakit.leamancomputing.com/catalog/product_info.php?products_id=438 ?

I found this from my old Compaq Desktop Pro :

http://pho.to/get-shared-image/C65713E9-5A29-B854-9915-61617020B34F.jpg

http://pho.to/get-shared-image/DB12DD72-64AB-17F4-71D5-B9EF56030F1D.jpg

But there is no power cable going to the cd-drive, is it powered trough the IDE cable ? This drive would really fit my miggy, as it's the same colour and all :lol:
Title: Re: IDC50 to DB25
Post by: meega on October 20, 2009, 09:46:48 PM
The internal IDE header of the A1200 can provide about 1 amp of 5V, not much more. I have a 2006 manufactured slim optical drive here that takes 1500mA of 5V, I wouldn't be happy running that without separate power... and I certainly wouldn't run it at the same time as a 2.5" hard disk that is powered through the same 44-way cable.

Does the label tell you what the power requirements are?
Title: Re: IDC50 to DB25
Post by: lauri.lotvonen on October 21, 2009, 06:21:51 AM
Quote from: meega;526678
The internal IDE header of the A1200 can provide about 1 amp of 5V, not much more. I have a 2006 manufactured slim optical drive here that takes 1500mA of 5V, I wouldn't be happy running that without separate power... and I certainly wouldn't run it at the same time as a 2.5" hard disk that is powered through the same 44-way cable.

Does the label tell you what the power requirements are?

My drive is manufactured in 1999, but the power requirements are the same as yours: 5V DC , 1.5A = 1500mA. How did you power yours ? And yes, I have a CF hard drive going trough same time... I assumed that if the cd-drive worked on my Compaq without a separate power, it would work with my Amy. Wow im getting stupid :roflmao:

Opened my A1200 and found that there is a 2,5 44pin to 3,5 40pin adapter installed, since I have a CF hard drive, now I just need a 40pin female to 2xmale ide cable, is there such a thing? so my configuration would be : from 44pin to adapter, from adapter to CF and CD-drive.
Title: Re: IDC50 to DB25
Post by: meega on October 21, 2009, 09:54:17 AM
I didn't say I was using it - I said I have one here... it's on a shelf with other bits waiting for me to hack the case.  :hammer:

If I want to use SCSI/CD directly with my A1200 then at the moment I plug in a Squirrel and use a proper 50-way Centronics interfaced external cased drive (which has its own internal 240V mains supply). I don't want to draw 12-15W through the A1200 IDE header.

You can ignore the power used by the CF card, so you have 5-6W available through the header. My normal hard drive uses 0.7A (3.5W) which is just dandy, but I have an old Hitachi 1GB 2.5" hard drive that does work from the A1200 44-way, it uses 1.2A (6W) - that's the limit in my opinion. Whether you want to try 7.5W of CD is entirely up to you - I won't do it.

You might try tapping 5V from the floppy drive power header - it's largely idle in a hard drive or CF based system, and you probably won't be using floppy and CD at the same time very often.