[Coco] again 3.5" drive

[Joel Ewy]

Gene Heskett wrote:
> On Tuesday 22 April 2008, Diego Barizo wrote:
>   
>> Once I was sure that the 3.5" drive was working OK, I went fishing for a
>> cable that would let me connect 1x 5.25 + 1x3.5 drives
>> Got one that is like this
>> 3.5           5.25          3.5          5.25
>> (unused)    controller      drive        drive
>>
>> ||------------|||------------||----------|||
>> ||------------|||------------||----------|||
>> ||------------|||------------||----------|||
>>
>> When I connect just one drive, the 3.5 acts as drive 1, and the 5.25 as
>> drive 0
>> But when both are connected, and I try to access drive 0, both drives
>> light up.
>> I removed the D0 jumper from the 5.25 (It had both D0 and D1, now just
>> D1) and now both light up when accessing drive 1.
>> I'm guessing this has to do with jumper settings on the 3.5 drive
>> (doesn't have real jumpers, but there are 4 holes in the circuit board
>> in an area labeled DX, with pairs marked as 1 and 0, without any
>> connection between them).
>> But if it were jumpered, wouldn't it always react as the selected drive?
>> Or as drive 0 if working as single drive?
>> My final goal is to have the 3.5 as 0, and the 5.25 as 1...
>>
>> Diego
>>     
>
> AFAIK Diego, all 3.5 drives are factory programmed as drive 1, and the twist 
> in the end section of the cable makes the one on the end of the cable drive 
> 0.
>
>   
Most are but not all.  I have some older drives that have nice little
slide switches or jumpers to permit a right and proper drive selection
just like God intended.  Most of these date from the time when you'd pay
$50 for a 3.5" HD floppy drive and think that was a good deal.  I've
also seen some that have unpopulated pads for jumpers or switches.  The
newer drives though, are too cheap to bother with such niceties.

JCE
> Set the 5.25 as drive 1, and use a twisted cable with the 5.25" on the 
> untwisted connector in the middle.  No terms on the 5.25" either.  
>
> Theoretically that should work, but then we've all seen that sig that says its 
> a long way from theory to practice. :-)
>
>   
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>>     
>
>
>
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