R1 = 0R2 = 0R3 = 1R1 = R1 + R3 = 0 + 1 = 1R2 = R2 + R3 = 0 + 1 = 1R3 = R1 - R2 = 1 - 1 = 0R4 = R1 & R3 = 1 & 0 = 0R5 = R2 | R3 = 1 | 0 = 1R6 = R1 + R2 = 1 + 1 = 2R7 = R2 + R6 = 1 + 2 = 3output = R7Control Signal Truth TableInstructionstateRFSrcMuxSelwewaddr[2:0]raddr[2:0]raddr2[2:0]op[1:0]OutLoadR1 = 0S001100x0R2 = 0S101200x0R3 = 1S211300x0R1 = R1 + R3S30111300R2 = R2 + R3S40122300R3 = R1 - R2S..