Consider a new variant of the sw instruction (sw_inc) that increments the base register by 4 (so as to point to the next memory word) after storing the contents of the source register into memory. The instruction sw_inc $s0,500($s1), for example, would have the same effect as the following two instructions:

sw $s0,500($s1)

addi $s1,$s1,4

Describe the modifications to the single cycle datapath that would be needed to implement sw_inc, and give the control signal settings that would be required for this instruction.