Question $19$: Check Even Parity

Write a subroutine that takes the address of a counted string in the register R$0.$ It should check

for an even number of set bits in each character of the string. If all the bytes have an even parity

then it should set the Z$-$flag, if one or more bytes have an odd parity it should clear the Z$-$flag.

Use the associated test file to see the string you must operate on$.$ What is listed

here is for explanotery purpose only.

Note that ${19}_{16}$ is ${00011001}_2$ which has three $1$ bits and thus has an odd parity.

Solve using Cpulator ARMv$7$