Revise the floating point addition unit presented in the textbook (Figure 3.15) to reflect the following requirements/restrictions: (1) add two numbers of same sign only (i.e. both positive or both negative), (2) replace the rounding unit with a truncation unit, i.e. modify Figure 3.15 by simplifying the normalization stage and control unit so there is no iteration back), (3) explicitly show how hidden one is handled. No need to trace data.

SignExponent Sign Exponent Fraction Fraction Compare Small ALU Exponent difference C0 1 Shift smaller number right Control Shift right Add Big ALU ncrement oShift left or right decrement Normalize Rounding hardware Round SignExponent Fraction SignExponent Sign Exponent Fraction Fraction Compare Small ALU Exponent difference C0 1 Shift smaller number right Control Shift right Add Big ALU ncrement oShift left or right decrement Normalize Rounding hardware Round SignExponent Fraction