ADD r2,r1,r3   # add instruction in ARM architecture to do r2 = r1 + r3
               # r1, r2, r3 refer to values stored in register r1, r2, r3
               # using ARM since Intel isn't the best when learning about ISA

ADD16 r2,r1,r3 # perform addition half-word wise (assuming 32 bit word size)