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drives:8 [2022/02/14 17:57] – wohalidrives:8 [2024/05/27 05:55] (current) – pdevine
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 The D Bit [[http://www.dbit.com/fddc.html|FDDC]] "is a DC-DC converter which boosts/negates the voltages from a PC power supply to those needed by most 8" floppy drives. It can attach to an IDE power connector on a PC's power supply that has sufficient capacity to power both the PC and an 8" drive". The D Bit [[http://www.dbit.com/fddc.html|FDDC]] "is a DC-DC converter which boosts/negates the voltages from a PC power supply to those needed by most 8" floppy drives. It can attach to an IDE power connector on a PC's power supply that has sufficient capacity to power both the PC and an 8" drive".
  
-Care must be taken to ensure the +5V supply to the drive is well regulated - otherwise, damage to the Applesauce may occur.+Care must be taken to ensure the +5V supply to the drive is well regulated - otherwise, damage to the Applesauce may occur. In addition, remember to always power up the Applesauce before powering up the floppy drive. And power down the drive before powering down the Applesauce. This will help to reduce the chance of potentially damaging the AS by having power back fed into it. 
  
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 ===== Specific Drive Information ===== ===== Specific Drive Information =====
  
 +==== NEC 1165 ====
 +
 +^ Index sensor: |   True |
 +^ # of sides:   |      2 |
 +^ Tracks:       |     77 |
 +^ Step time:    |   3 ms |
 +^ Settle time:  |  18 ms |
 +
 +TODO(vtgearhead): Jumpers and photo.
 +
 +=== Notes ===
 +
 +Manuals [[https://retrocmp.de/fdd/nec/fd1165q_i.htm|available]].
 +
 +----
 ==== QumeTrak 842 ==== ==== QumeTrak 842 ====
  
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 The 3-pin connector powers the spindle motor which runs //all the time//. For running with the Applesauce, one can make a {{ drives:qumetrak_842_ac_power_cord.jpeg?linkonly| power cord }} that plugs into the wall. The 3-pin connector powers the spindle motor which runs //all the time//. For running with the Applesauce, one can make a {{ drives:qumetrak_842_ac_power_cord.jpeg?linkonly| power cord }} that plugs into the wall.
 +
 +Verify the rubber grommets on the solenoids are in good order. Gummy or dry grommets can prevent the head load from engaging or disengaging. Bad grommets can also be a problem on the drive door lock.
  
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 It can be convenient to configure the drive to not lock the drive door when accessing, especially when dealing with damaged, flaky, or moldy media. It can be convenient to configure the drive to not lock the drive door when accessing, especially when dealing with damaged, flaky, or moldy media.
 +
 +----
 +
 +==== Tandon (TM848, etc.) ====
 +
 +Use of these drives is **strongly discouraged**. The cone/clamp hub mechanism applies too great of a clamping force, and can tear the hub out of the diskette, ruining the media. You have been warned!