1. 8 Bit Multiplier Verilog Code
2. 4 Bit Serial Multiplier Verilog Code For 1
3. Approximate Multiplier Verilog Code

.Part of thebook series (CCIS, volume 269) AbstractHighly efficient arithmetic operations are necessary to achieve the desired performance in many real-time systems and digital image processing applications. In all these applications, one of the important arithmetic operations frequently performed is to multiply and accumulate with small computational time. In this paper, a serial - parallel multiplier, which can be used to perform either signed or unsigned multiplications, is presented. In this multiplier one factor B( n) is fed serially with word length n=4 while the other A( m) is stored in parallel with number of bits m=4.

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8 Bit Multiplier Verilog Code

Baugh-Wooley algorithm necessitates complementation of last bit of each partial product except the last partial product in which all but the last bit are complemented. In the proposed algorithm all bits of the last partial product are complemented. This modification results in considerable reduction in hardware compared to Baugh-Wooley multiplier.

This multiplier can be used for implementation of discrete orthogonal transforms, which are used in many applications, including image and signal processing. Also a fully pipelined 2-D bit-level systolic architecture is presented for efficient implementation of discrete orthogonal transforms using a serial-parallel matrix-vector multiplication scheme.

A comparison with similar structures has shown that the proposed structure requires less computation time. Cite this paper as:Murty M.N., Nayak S.S., Padhy B., Panda S.N. (2012) 4-Bit Serial-Parallel Multiplier and Bit-Level Systolic Architecture for Implementation of Discrete Orthogonal Transforms. In: Krishna P.V., Babu M.R., Ariwa E. (eds) Global Trends in Computing and Communication Systems.

Communications in Computer and Information Science, vol 269. Springer, Berlin, Heidelberg. DOI Publisher Name Springer, Berlin, Heidelberg. Print ISBN 978-3-642-29218-7. Online ISBN 978-3-642-29219-4.

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4 Bit Serial Multiplier Verilog Code For 1

Library ieee;use ieee.stdlogic1164. All;use ieee.stdlogicarith. All;entity SerialMultiplier1 is port(A,B: IN stdlogicvector( 15 downto 0);reset: IN stdlogic;X: OUT stdlogicvector( 31 downto 0));end SerialMultiplier1;architecture behavior of SerialMultiplier1 is signal R1,R2,R3: stdlogicvector( 31 downto 0):= ( others = '0');begin process(reset)begin if reset= '1' thenX '0');end if;end process;process(A,B)begin for i in 0 to 31 loop if i = 0 then if B(i) = '1' thenR1( 15+i downto i) '0');end if;X(i) 0 and i '0');end if;R3 '0');elseX(i). Library ieee;use ieee.stdlogic1164. All;use ieee.stdlogicarith.

Approximate Multiplier Verilog Code

All;entity tbSerialMultiplier1 is end tbSerialMultiplier1;architecture behavior of tbSerialMultiplier1 is component SerialMultiplier1port(A,B: IN stdlogicvector( 15 downto 0);reset: IN stdlogic;X: OUT stdlogicvector( 31 downto 0));end component;signal A,B: stdlogicvector( 15 downto 0);signal reset: stdlogic;signal X: stdlogicvector( 31 downto 0);beginDUT: SerialMultiplier1 port map(A,B,reset,X);process begin wait for 0 ns;A.