Figure Q(a) (b) Analyze the pipeline datapath in Figure Q2(a) by considering the following questions: (1) Explain the need for platform registers. [5 marks] () Discuss the inputs to MUX A. (5 marks) 31 25 24 20 19 15 14 10 9 DR SA SB Three-register type OPCODE Two-register type OPCODE DR SA Immediate Branch OPCODE DR SA Target offset Figure Q(a)ii Table Q(a) Symbolic Notation code Operation No Operation Move A Add Subtract AND NOP MOVA ADD SUB AND OR XOR NOT ADI SBI ANI OR Exclusive-OR Complement Add Immediate Subtract Immediate AND Immediate OR Immediate Exclusive-OR Immediate Add Immediate Unsigned 0000000 1000000 0000010 XX00101 0001000 0001001 0001010 0001011 0100010 0100101 0101000 0101001 0101010 ORI XRI AIU 1000010 Figure Q(a) (b) Analyze the pipeline datapath in Figure Q2(a) by considering the following questions: (1) Explain the need for platform registers. [5 marks] () Discuss the inputs to MUX A. (5 marks) 31 25 24 20 19 15 14 10 9 DR SA SB Three-register type OPCODE Two-register type OPCODE DR SA Immediate Branch OPCODE DR SA Target offset Figure Q(a)ii Table Q(a) Symbolic Notation code Operation No Operation Move A Add Subtract AND NOP MOVA ADD SUB AND OR XOR NOT ADI SBI ANI OR Exclusive-OR Complement Add Immediate Subtract Immediate AND Immediate OR Immediate Exclusive-OR Immediate Add Immediate Unsigned 0000000 1000000 0000010 XX00101 0001000 0001001 0001010 0001011 0100010 0100101 0101000 0101001 0101010 ORI XRI AIU 1000010