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   comp.sys.tandy      Life is dandy cuz you're gettin a Tandy!      5,684 messages   

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   Message 4,909 of 5,684   
   Michael Black to Ira   
   Re: Model 4 Disk Drive Issue   
   30 Jul 08 21:35:48   
   
   From: et472@ncf.ca   
      
     This message is in MIME format.  The first part should be readable text,   
     while the remaining parts are likely unreadable without MIME-aware tools.   
      
   On Wed, 30 Jul 2008, Ira wrote:   
      
      
   > That’s his story.  He has also cleaned the drive heads, and has returned the    
   > drives to their original installed order (so no terminating resistor issues    
   > from the swapping).  I have provided him an additional set of disks which    
   > have produced the same results.   
   >   
   Is the cable in the right way?   
      
   I remember when I got a 3.5" drive, and an adaptor, and it wasn't    
   immediately clear which way to plug it in.  The first way did weird   
   things, what exactly I can't remember (and it was a Color Computer).   
   But once I had the drive connector the right way, I realized that since   
   the wrong way puts ground on all kinds of pins that are used for things   
   (since one side of the connector is just ground pins), it would cause   
   activity without actually working.  The control pins tend to require   
   ground to be "on", so grounding things like the motor on and head   
   select and write and whatever else ended up with a spinning drive   
   that actually erased what I had on the floppy.   
      
   The connector at the floppy I don't think can be reversed, since   
   there should be a slot to make it clear, but I don't know what   
   the connector is at the drive controller.  If it's ambiguous,   
   and reversible, that might be the problem.   
      
      Michael   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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