[Coco] Need help (of course)

[Richard E Crislip]

On Fri, 5 Dec 2014 20:51:51 -0500
Bill Pierce via Coco <coco at maltedmedia.com> wrote:

> 
> According to what I read in a Rainbow article just recently (Marty
> Goodman?), when a drive is accessed, they all should spin, but only
> the drive accessed should light up. 
> 
> Bill Pierce
> "Today is a good day... I woke up" - Ritchie Havens
>  
> 
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> 
>  
>  
> -----Original Message-----
> From: Richard E Crislip <rcrislip at neo.rr.com>
> To: coco <coco at maltedmedia.com>
> Sent: Fri, Dec 5, 2014 8:09 pm
> Subject: Re: [Coco] Need help (of course)
> 
> 
> On Fri, 5 Dec 2014 15:36:11 -0500
> "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... 
> > 
> > 
> 
> That's normal, at least in my experience. You hit one and they all
> spin up.
> 
> Cheers
> 

You are absolutely correct. I spoke up before my left lobe kicked in
8=/. As you point out, they all spin up, but only the selected drive
should light up. The point being discussed here is that all the drives
were lighting up.

Cheers