[Coco] Need help (of course)

[Arthur Flexser]

You're right, Al.  I had my Drive 0 closest to the CoCo for so many years
that I overlooked that you had it the opposite way.  I suppose there's no
particular reason for it to matter which way you hook it up in that respect?

Art

On Sat, Dec 6, 2014 at 1:18 AM, Al Hartman <alhartman6 at optonline.net> wrote:

> I wrote that you put the terminating resistor in Drive 0:, and pin the
> connector furthest away from the controller as Drive 0:.
>
> I made up these cables for years at Stony Clove Computer Center and
> Spectrum Projects.
>
> Check again.
>
> -[ Al ]-
>
> -----Original Message----- From: Arthur Flexser
> Sent: Saturday, December 06, 2014 12:25 AM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] Need help (of course)
>
> Al, my recollection is that the terminating resistor should go on the LAST
> drive on the cable, not the first.  No?  (The name "terminating" certainly
> would seem to suggest that.)
>
> Art
>
> On Fri, Dec 5, 2014 at 11:12 PM, Al Hartman <alhartman6 at optonline.net>
> wrote:
>
>  What is normally done on TRS-80 Disk drives is that you jumper DS0 and DS1
>> on every drive. Put the terminator in the Drive 0:, and remove it on all
>> other drives.
>>
>> Then, you remove the pins from the edge connector on the drive cable for
>> the unused drive selects, causing each connector to select only one
>> position with drive 0: being the furthest from the controller. You can
>> have
>> 4 single sided drives this way. If you want to use double sided drives on
>> a
>> Coco, I think you have to jumper ds3 to the side select pin with a wire in
>> both drives, and you can only have two drives in DEB. OS-9 might let you
>> have 3 double-sided drives, but someone else would have to tell you.
>>
>> -[ Al ]-
>>
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>>
>>
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