BOOTH multiplier

The Booth multiplier was selected as it is relatively simple and allows the previously defined ripple-carry adder/subtractor to be used. Also, it is a good method of designing multiplier hardware that must operate on signed numbers. 

A multiplier based on the Booth recoding scheme is shown in Figure 6.25. The operation of this multiplier can be summarized as follows ... 

Figure 6.25 Structure of a simple Booth parallel multiplier.

Table 6.6 Logic synthesis and area optimization statistics for the Booth 2 x2 multiplier architecture. Resources were not shared and performance optimization did not reduce the delay...

The Booth recoding algorithm of this multiplier required a behavioural implementation as opposed to the structured approach taken with the carry-lookahead adder. A behavioural style allows the multiplier to be implemented in different ways, such as a function or a process. The former ap-... 

---