The major difference in YAFFS2 is the support for flash parts with zero
rewrite. YAFFS1 keeps track of what data, files etc are deleted by the use of
deletion markers. Writing the deletion marker has two down-sides:
1) Some flash parts do not tolerate any rewrites.
2) Obviously more writes == slower.
YAFFS2 supports page sizes > 512bytes. You could hack YAFFS1 (ie. increase
chunk size to 2k) to do this too, but YAFFS2 does straight off.
Bigger chunks means less chunks per MB which means less RAM footprint.
-- CHarles
On Tuesday 19 October 2004 01:33, Li Xin-a16157 wrote:
> They are essentially interchangeable, although only YAFFS2 will support
> newer hardware (2k page size, no page rewriting).
> -----------------------------------------------------
>
> Does this mean the current YAFFS doesn't support 2K page size Nand flash?
>
> Li Xin
> Best Regards.
>
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