Hi, > i am not able to understand you question fully > From what i understood i feel putting yaffs file system support in > bootloader can be tricky & difficult(i believe). My point is, if sizeof (base boot codes + yaffs direct interface) <= 16K, I can put a full bootloader into yaffs. the bootloader in yaffs can do a lots of things, include 2nd phase boot and kernel loader. if not, it's too bad. Sorry for my English. Best Regards, Russell Greece. .