Date   : Thu, 03 Apr 2008 19:59:43 +0100
From   : acorn@... (Andy Ford)
Subject: Wires cut in floppy ribbon cable?

Hi Kris

Not sure if this will help, but here is a pinout of the standard 34 way 
floppy drive connectors :)

http://www.allpinouts.org/index.php/Internal_Diskdrive





Kris Adcock wrote:
> Evening all!
>
> I've just tried to replace the ribbon cable on a 5.25-inch floppy drive. 
> The drive works fine, but the cable was manky, so I swapped it for a 
> nicer one.
>
> But when the Beeb accesses the drive, it makes an awful grinding noise!
>
> On closer inspection, it seems that the first two wires of the old cable 
> (the one with the stripe, and the one after) have been cut deliberately 
> (there's a one-centimetre section very neatly clipped out).
>
> So what does the cutting do? An idiosyncracy of the drive? I know that 
> alternate lines in a floppy cable are 0v, so presumably it's just the 
> one wire that is actually important.
>
> Not a big deal, I suppose - just something else to look out for when I'm 
> trying to build working drives from assorted non-working ones. :)
>
> Cheers,
>
> Kris.
>
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