basic structure for 8 bit CPU

8 bit memory to build 8 bit CPU

8 bit CPU without memory

Just need clarification that how to connect RAM (memory) to 8 bit CPU ? please give circuit in Logisim software.

and also explain steps that are given in first photo and also following photo

1. Create a project Lab3.circ in the Logisim. 2. Add a circuit window to test the 8-bit RAM, replicate the circuit in the lab notes and practice with the steps following the diagram 3. Add a circuit window to implement the 8-bit CPU design in the lab notes 4. In the 8-bit CPU, the highest 2-bit in the instruction register IR will hold the operation code. The 8-bit CPU will do the following operations: . For instruction 00, do 8-bit XOR, test 00000010 XOR 00000011 = 00000001 o For instruction 01, do 8-bit AND test 00000010 AND 00000011 = 00000010 o For instruction 10, do 8-bit NOT operation, the Operand will be in the register ACC, test NOT 00000010 = 11111101. For instruction 11. do 8-bit OR test 00000010 OR 00000011 = 00000011 CPU BUS External Input MARin PCin PCout MAR PC +1 MEMenabler MEMin MEMout PC+tout MEM Rin IR Cin Cout control unit Bin Bout ALUout ACCin ACCOU! ALU Tmp IMPIO. TMPout can come from CPU BUS 8-bit RAM 000 10001 EXTinput Can go to CPU BUS DO 00 00 00 08 00 04100 00 00 00 08100 00 00 00 Oc100 00 00 00 sel clr tero p0001000 MEMoutput O MARin Do MEMIO 00000010 1 store, o load Address MEMenable MEMIKO 8-bit CPU No Memory