3) a) For each MIPS instruction except for the branch instruction, show the value of the opcode ( OP), source register (RS), and target register (RT) fields. For the I-typ the immediate field, and for the R-type instructions, show (RD) field. e instructions, show the value of the value of the destination register b) The following program tries to register Sa1, counting the number of words copied in register $vO. The program stops copying when it finds a word equal to 0. You do not have to preserve the contents of registers $v1, sao, copy words from the address in register $a0 to the address in and Sa1. This terminating word should be copied but not counted addi svo. Szero, 0 # Initialize count # Read next word from source # write to destination # Advance pointer to next source # Advance pointer to next destination # Loop if word copied != zero loop: lw Sv1, 0(Sao) sw Sv1, O(Sa1) addi Sao, $ao, 4 addi $a1, Sa1, 4 beq Sv1, Szero, loop