xD cards are just raw NAND chips.  As such, you should use Yaffs if
you want a NAND specific filesystem.  Of course, this means that you
can't use the card in regular card readers.  I've used xD cards in
past projects as variable sized NAND chips - they work well with
YAFFS.  Unless you need to use the cards in other devices, use Yaffs.
Using FAT may not even offer regular device compatibility - I have no
idea what format the xD spec requires.

Cheers,
Brad

2008/8/25 pandi <pandi0077@gmail.com>:
> Hi all
>  I am developing low level interface driver for XD(extreme digital)
> controller and need to interface   it with application layer via file
> system. shall i use flash file system(YAFFS) for interfacing or FAT
> system for interface? which file system will be suites the needs?
>
> also i need to know on what basis we need to select file system interface.
>
> can any one help me on this?
>
> thanks in advance
>
> pandi
>
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