Wild-hair floppy drive question

[Doc Shipley]

Randy McLaughlin wrote:

> From: "Randy McLaughlin" <cctalk at randy482.com>
> Sent: Monday, June 13, 2005 5:57 PM
> 
> 
>> From: "Tony Duell" <ard at p850ug1.demon.co.uk>
>> Sent: Monday, June 13, 2005 4:45 PM
>>
>>
>>>>    Well, I found a couple of 3.5" drives that can be jumpered, and the
>>>> Altos doesn't recognize 'em at all.  I suspect it wants a drive that
>>>> does DD only.
>>>
>>>
>>> Wild guess. Pin 34 changed its definition at some point (IIRC it used to
>>> be Rdy/, it bacame disk_change/). Maybe that's your problem.
>>>
>>>>
>>>> > If not a TEAC FD55GFV will work as a DSQD 5.25".
>>>>
>>>>    Do you have the jumper settings for that?  TEAC's documentation
>>>> drives me up the wall.  I have an FD55GFR that I can make boot and 
>>>> read,
>>>
>>>
>>> The thing that really annoys me about the Teac documentation is that the
>>> jumpers are not explained in the service manual (and on later drives 
>>> with
>>> one big ASIC, you can't really work them out). OK, they're probably in
>>> the OEM manaul, or something, but if all you have is the service manual,
>>> that's not a lot of help...
>>>
>>> -tony
>>
>>
>>
>> I'll lookup the exact Teac jumpers but not only do you have to change 
>> the two speed jumper but you must make sure pin 2 is grounded to 
>> select the correct speed.
>>
>> Randy
>> www.s100-manuals.com
> 
> 
> To make the Teac 1.2mb drive act like a QD drive there are two options:
> 
> Jumper I on, LG off, low on pin 2 of the 34 pin connector or Jumper I 
> on, LG on, high on pin 2 of the 34 pin connector.

   Thanks.  I think it was the flip-flop on pin 2 that was hammering me.

   I'm suddenly in the middle of a Tivoli TSM migration, but when things 
cool off  abit I'll try this.


	Doc