The Page size has been set to 1 byte instead of the previous 256.
Although 256 is the physical page size, the driver supports
writing 1 byte at a time.
The FlashIAP is supposed to have access to the full application
memory, so the address scope has been changed to encompass
the entire external flash.
The address translation has also been changed to reflect the memory
layout in the documentation:
Realtek Ameba1 Memory Layout: 5.1 Flash Memory