Write a subroutine that finds the whether a 4-digit decimal has the following property:

Take the square of the sum of the upper half, and the lower half of the 4-digit decimal number passed in r16:r17 and it is equal to the original number.

If it is true, the subroutine returns 1 in r22. Otherwise, it returns 0 in r22. Then write a main program to test this subroutine. The main program finds all the 4-digit decimal number having this property and store them in data memory starting from 0x2000.

This is being written in assembly language for an atxmega128a1u