- Consider the hybrid addition of a carry-save unsigned number X and an unsigned conventional number Y. Similar to the hybrid radix-2 redundant addition discussed in Section 14.3.1, the first step of this addition is computed as :
(a) Let and Design a parallel adder similar to the hybrid adder in Fig. 14.1 for a wordlength of 8. Specify appropriate encoding of ti and ui.
(b) Design the corresponding msd-first and lsd-first serial architectures.
- The adder in Fig. 14.5 computes S<2,1> = (X<2,1> + Y +) – Y −. Redesign another possible redundant adder architecture for the addition computation using S<2,1> = (X<2,1> – Y −) + Y + in
(b) lsd-first digit-serial, and
Fig. 14.23 Block diagram of msd-first redundant to nonredundant converter.
(c) msd-first digit-serial
- Design the msd-first and lsd-first serial architectures for the addition of 2 carry-save numbers. ...