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Atari XF551 Disk Drive Firmware upgrade ROM chip
For the Atari 400 800 XL and XE series computers!



The Atari XF551 5 1/4" Disk Drive that stores 360K on a DSDD Diskette.


 Up for auction is a Firmware upgrade ROM chip for the Atari XF551
disk drive.  Please note that the actual disk drive is not included.

You have a choice of a Bob Woolley or HyperXF ROM chip for your XF551 disk drive.

These ROMs will upgrade your drive to the latest ROM available which fixes a lot of problems and makes the drive more stable.  You can now also use a PC 3.5" 720K drive mech with your Atari for 2880 blocks of data on a DSDD diskette!

Your choice on which ROM for the drive:

-Bob Woolley ROM is just a patched ROM for use of a 3.5" 80 track drive. (The Original way it was done, leaves the drive stock)

-HyperXF is a extensive upgrade with lots of features like sector skewing for faster read/write and partitioning.  You have a choice for the 3.5" or 5.25" version (if you just want to upgrade and keep the 5.25" drive mech)

(NOTE: Skills for removal of old drive ROM chip and light soldering might be required.  Chip is almost always in a socket already but if not then you will have to remove the old OS chip and install a socket for the new chip.  Installation instructions included.)




The Atari XF551 modified with 3.5" Disk Drive that stores 720K.



OS:

Atari DOS (varous)

Type:

Firmware ROM chip

Version:

NA

Machines:

Atari 400 800 XL XE series

Comments:

Upgraded ROM for XF551 disk drive.  Fixes some bugs and gives the option to use a 3.5" drive mech, for storing double the data on a disk.  720K.


Condition Report:
This ROM is new and never used.  Guaranteed to work, just send it back and I will issue a replacement!

Thank you,
TjLaZah Auctions.

Shipping/Handling is $6 USA/Canada and $10 for Worldwide shipping.  It will be carefully packed in a box for safe arrival.  I will be shipping it First Class/Priority Mail.  If you have any questions please send me a message.

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