External Flash programming

Hi,

I want to store a large image on external flash device (k9f1g08u0c, SAMSUNG NAND FLASH)...

In order to do this, I need programming algorithm for the flash, I don't know how to do that. I read the guides on
www.keil.com/.../ulink2_su_newalgorithms.htm

But I do not have enough knowledge to write erase, programpage , and other necessary functions...

Any idea, guidance is very welcome ...

thanks

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