Solution:

Here are the new ADAM-4500 library for access Flash ROM (170KB for users). You'll have following 4 function call which shown as below: ProgramByte ProgramSector EraseSector read_mem Besides, you must aware the different "Memory Mapping" between ADAM-5510/A2 and ADAM-4500, so you just can access 0xF0000 - 0xF3FFF(144KB - 160KB of Application ROM Disk) by above 4 function. I image if our application less then 140KB, then we can use this sector for our data storage (each sector is 16KB in ADAM-4500, and each sector is 32KB in ADAM-5510/A2). The example '4500_ROM.C' just shown you how to access Flash ROM. It erase the sector, program the sector, and then verify the written data.