See Section 7 for details of the power-up and system reset operations.
During power-up and system reset the first non-RAM address above 1000 hex is located and its address retained using a nondestructive test. The first byte of every OK memory "block" is tested to see if it is alterable, if so, the original value is restored and the next block is tested, and if not, that address is considered to be the end of RAM.
