Please TYPE your answer not hand written.

The program execution of Figure 3.5 is described in the text using six steps. Expand this description to show the use of the MAR and MBR.

Please TYPE your answer not hand written.

CPU registers Memory 300 1 9 4 0 301 5 9 4 1 302 2 9 4 1 CPU registers Memory 30 0 PC300 194 0 AC 301 5 9 4 1 19 4 0 IR 302 2 94 1 3 0 1 PC 0 0 0 3 AC 19 4 0 IR 940 0 0 0 3 941 0 0 0 2 940 0 0 0 3 941 0 0 0 2 Step 1 Step 2 Memory CPU registers Memory 300 1 9 4 0 301 5 9 4 1 302 2 9 4 1 CPU registers 30 1 PC300 194 0 0 0 0 AC 30159 41 5 9 4 IR302 2 9 4 1 3 0 2 PC 5AC 5 9 4 IR 940 0 0 0 3 941 0 0 0 2 940 0 0 0 3 941 0 0 0 2 Step 3 Step 4 CPU registers Memory CPU registers Memory 300 1 9 4 0 301 5 9 4 1 302 2 9 4 1 30 2 PC300 194 0 0 0 0 5 AC 3015 941 2 94 IR 302 2 9 4 1 3 0 3 PC 5 AC 2 9 41 IR 940 0 0 0 3 941 0 0 0 2 940 0 0 0 3 941 0 0 0 5 Step 5 Step 6 Figure 3.5 Example of Program Execution (contents of memory and registers in hexadecimal) CPU registers Memory 300 1 9 4 0 301 5 9 4 1 302 2 9 4 1 CPU registers Memory 30 0 PC300 194 0 AC 301 5 9 4 1 19 4 0 IR 302 2 94 1 3 0 1 PC 0 0 0 3 AC 19 4 0 IR 940 0 0 0 3 941 0 0 0 2 940 0 0 0 3 941 0 0 0 2 Step 1 Step 2 Memory CPU registers Memory 300 1 9 4 0 301 5 9 4 1 302 2 9 4 1 CPU registers 30 1 PC300 194 0 0 0 0 AC 30159 41 5 9 4 IR302 2 9 4 1 3 0 2 PC 5AC 5 9 4 IR 940 0 0 0 3 941 0 0 0 2 940 0 0 0 3 941 0 0 0 2 Step 3 Step 4 CPU registers Memory CPU registers Memory 300 1 9 4 0 301 5 9 4 1 302 2 9 4 1 30 2 PC300 194 0 0 0 0 5 AC 3015 941 2 94 IR 302 2 9 4 1 3 0 3 PC 5 AC 2 9 41 IR 940 0 0 0 3 941 0 0 0 2 940 0 0 0 3 941 0 0 0 5 Step 5 Step 6 Figure 3.5 Example of Program Execution (contents of memory and registers in hexadecimal)