read/write nor flash memory...?

Hi,

I want to read and write the nor flash but not as MTD(char or block) partition.

For ex:

I have my data 'A' I want it to write to some memory address for ex:0x0700001(address of nor flash). and read it using flash address ie 0x0700001.

That is I want to access nor flash memory directly with address. how to do this...??