SCSI cdrom to A590

[Speelgoedmannetje]

Hello all,
I just purchased an old external SCSI cdrom drive (for about 50 eurocents). It didn't came with a cord. Can I use a straight through 25-25 pin cord? Are there drivers available for Workbench 1.3?

[meega]

Speelgoedmannetje wrote:Can I use a straight through 25-25 pin cord?
Not recommended.

[tabuhuso]

Yes you can use 25 to 25 scsi cable. But don't forget adjust scsi ID for external scsi box :-)

[Speelgoedmannetje]

Ehm, I don't understand, I was talking about a standard 25-25 pin male-male 'extension' cable, but I guess I need a special SCSI cable? Can I make one myself? I'm not allergic to soldering...
And the A590 harddrive is set to 1, with those four switches. Do I need to set it to 2, or?

[meega]

25-way D-connector to 50-way SCSI cables have 50 wires in them, 25 of which are grounds, and all those grounds run to the same pin on the 25-way connector. The ground wires are there to prevent cross-talk, in much the same way that 80-conductor IDE cables (for use with 40-pin headers/devices) allow higher data speeds than the 40-way cables. If you can find a 25-way to 25-way SCSI lead, it should still have 50 conductors in it.

It is not recommended to use 25-way straight-through extender cables in place of a proper SCSI lead.

Ebay Search (http://computers.listings.ebay.co.uk/Cables-Connectors_SCSI-Cables_W0QQfclZ3QQfromZR13QQloglZ0QQsacatZ31494QQs ocmdZListingItemList)

[Speelgoedmannetje]

Both systems have 25 pin adapters...

[meega]

From page 5 of the search that I posted, Item (http://cgi.ebay.co.uk/NEW-SCSI-Grade-DB25-Male-to-Male-1-0m_W0QQitemZ130212781782QQihZ003QQcategoryZ31494QQ ssPageNameZWDVWQQrdZ1QQcmdZViewItem) which is claimed to be SCSI-grade, using twisted-pair cable.

[Speelgoedmannetje]

A thanks, I think I'll have to buy one. I already found one in a nearby store on the internet. :-)

[meega]

It seems better value to me than soldering my own such lead. Time is money and all that - not to mention the risk of getting something wrong or having to trace a poor or broken connection. :-)

[Speelgoedmannetje]

Hmyes, but I'm a piss-poor student, with a bit of time and quite some skill with the soldering iron...

[meega]

25 wires onto one connection, at both ends... Also, the thickness (more to the point, thinness) of the wires is important. I think it is worth €15 or so (less if you can find one second-hand) to be able to blame someone else if it doesn't work. :lol:

[Matt_H]

@ Speelgoedmannetje

BabelCDFS (http://babel.de/amiga.html) is 1.3 compatible.

[Speelgoedmannetje]

meega wrote:
25 wires onto one connection, at both ends... Also, the thickness (more to the point, thinness) of the wires is important. I think it is worth €15 or so (less if you can find one second-hand) to be able to blame someone else if it doesn't work. :lol: But the pin config is just straight through, because I can easily get a high-quality cable (if I do not already have one. :-)

[Speelgoedmannetje]

Matt_H wrote:
@ Speelgoedmannetje

BabelCDFS (http://babel.de/amiga.html) is 1.3 compatible.Thanks! :-D

oooh when this gonna work, I'll be so happy! :-D

[meega]

Get yourself a cheap 25-way male D to 50-way male Centronics SCSI lead (pretty standard, lots available, second-hand plentiful, etc) and one of these (http://cgi.ebay.co.uk/25-pin-D-Sub-to-50-pin-Centronics-SCSI-Adapter_W0QQitemZ260227206632QQcmdZViewItem) and you will have the best of all possible worlds :-)

[Speelgoedmannetje]

meega wrote:
Get yourself a cheap 25-way male D to 50-way male Centronics SCSI lead (pretty standard, lots available, second-hand plentiful, etc) and one of these (http://cgi.ebay.co.uk/25-pin-D-Sub-to-50-pin-Centronics-SCSI-Adapter_W0QQitemZ260227206632QQcmdZViewItem) and you will have the best of all possible worlds :-) The only thing that I can find (I can't buy with ebay -yet) is this (http://intronics.hd.nl/p/INTRONICS/AK5742)
Just googled on the serial number.... found out that on another site it's regarded as a printer cable. (and it's a LOT cheaper there)
SOLVED.

[meega]

The standard such cable is one of these (http://cgi.ebay.co.uk/Standard-External-SCSI-Cable-25DM-50CM-NEW-inc-UK-p-p_W0QQitemZ120242147624QQihZ002QQcategoryZ31494QQs sPageNameZWDVWQQrdZ1QQcmdZViewItem) which with the little adapter such as this (http://cgi.ebay.co.uk/25-pin-D-Sub-to-50-pin-Centronics-SCSI-Adapter_W0QQitemZ260227206632QQcmdZViewItem) would give a very useful combination.

[Speelgoedmannetje]

I've just been to a nearby electronics shop, and the point is with these cables that they need to be IEEE 1284 compliant, which not all parallel cables are. I ordered one by them.