COMPLETE SIGNAL SET HERE IS THE COMPLETE SIGNAL SEQUENCE FOR MARIE'S ADD INSTRUCTION: P3 P2 P1 PO TO P4 P3 T1 MARX : MBR M[MAR] AO P5 P1 PO T2 Cr T3 : AC AC + MBR [Reset counter] THESE SIGNALS ARE ANDED WITH COMBINATIONAL LOGIC TO BRING ABOUT THE DESIRED MACHINE BEHAVIOR. NOTE THAT THE SIGNALS CORRESPOND TO 1 SIGNALS FOR EXAMPLE, IN THE SECOND OPERATION DATA IS A READ FROM MEMORY AND WRITTEN TO THE MBR. P4 P3 INDICATES A WRITE TO THE MBR SINCE ITS ID = 3 (11 IN BINARY) THE OTHER PART OF THIS OPERATION IS A READ FROM MEMORY. READS ARE INDICATED BY PO P1 P2. HOWEVER, BECAUSE THE MEMORY ID=0 (PO 0, P10, P2 = 0), THESE SIGNALS ARE NOT "TURNED ON", SO THEY DO NOT APPEAR IN THE LIST OF SIGNALS.