The RCM6750 got two section of battery-backup RAM: The internal 32KB RAM and the external 512KB RAM.
From the .org file that created after every compilation using Dynamic C, we can see that the battery backup RAM address is from 200000h to 208000h which is 8000h in size which equals to 32KB. So, that refers to the internal 32KB RAM right?
Then how bout the 512KB external RAM? What is the address for accessing the external RAM?