[Coco] Need help (of course)

[Arthur Flexser]

I believe that the drives lacking jumpers is the reason why Tandy used
pulled pins on the connector for drive selection on the drives for old
CoCos.  Sounds like your 5-1/4" drive is one of those requiring it.  Your
problem is that both drives are selected at once.

Art

On Fri, Dec 5, 2014 at 3:36 PM, Bill <cwgordon at carolina.rr.com> wrote:

> Dunno, the single drives work great, even though the 5 1/4" is a 35 track.
> Works well as drive 0. No jumpers anywhere on the drive.
>
> And the 3 1/2" works as well. I can use it as drive 0 OR drive 1,
> depending where on the cable it is. No jumpers on this one, either.
>
> But together, they BOTH light up when either is accessed with a known-good
> cable.
>
> I'm stumped!!
>
> -----Original Message-----
> From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Gene Heskett
> Sent: Friday, December 05, 2014 2:08 PM
> To: coco at maltedmedia.com
> Subject: Re: [Coco] Need help (of course)
>
> Sounds like you might have a duff cable?  Or a drive that doesn't care?
> Two jumpers on the DS row of pins maybe?  Or an accidental bridge between
> traces on the 3.5" DS less drive?  Either way that would have the effect of
> bridging the select lines together as there aren't any isolation buffers on
> any drive I have ever had.
>
> Weirdsville...
>
>
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