Note: Subject : Computer organization and architecture

4. Using the hardware given to the right, show the addition of two numbers in steps as it would take place. A = 8.625, B=-7.125 Show the steps in detail. Also show the contents of different registers (RI,.. R8) and control bits (CI, .. C9). It is noted that Control bits (CI, .. C9) could be either 1 or 0 and you can assign the logic levels for particular operations. You must present your answer in a Table, given below. (Increase no of columns and rows as required) Operation R1 R2 R3 C1 C2 Comments if any Time Step 1 2 3 R1 Exponent Praction Expono Praction R2 Smal ALU Compare exponents Exponent R3 C2 c, OD C1 C4 Caree SR4 BALU Add C5 c7 C6 Incremento dorment SMR5 C8 Normal R6 09 8 Rounding hardware R7 Sign Exponent Fraction R8