Hi Ankit, Your a[32] array and b[32] array are not stored in registers, they are stored in memory. But you are using a "r" specifier instead of a "m" specifier. I changed your example to use "m", and set b to all 255, and also changed the printf loop to print each time instead of just the first time, and then the assembly snippet copied a to b in four iterations. HTH, --Eljay
