8bit Multiplier Verilog Code Github Here

iverilog -o multiplier_tb multiplier.v tb_multiplier.v vvp multiplier_tb gtkwave dump.vcd | Architecture | LUTs (approx, 7-series) | Max Freq (MHz) | Power | Best for | |---------------|-------------------------|----------------|--------|-------------------------| | * operator | 0 (uses DSP48) | 450+ | Low | FPGA with DSP slices | | Array | 250-300 | 150 | Medium | ASIC, no DSP FPGA | | Sequential | 50-80 | 200 | Low | Low-area, slow designs | | Booth | 180-220 | 250 | Medium | Signed multiplication | | Wallace tree | 300-350 | 300 | High | High-speed DSP, ASIC |

// Adder tree (simplified example – real design uses full adders) assign sum_stage0 = 8'b0, pp0 + 7'b0, pp1, 1'b0; assign sum_stage1 = sum_stage0 + 6'b0, pp2, 2'b0; // ... continue for all partial products assign P = sum_stage3; // Final result after all additions endmodule

module mult_8bit_comb ( input [7:0] a, b, output reg [15:0] product ); always @(*) begin product = a * b; // Synthesized into LUTs or DSP slices end endmodule : Minimal code, fast simulation. Cons : No control over architecture; may waste resources on FPGAs if not using DSP slices. 8bit multiplier verilog code github

: High — this is the most common "learning multiplier" on repositories. Look for tags like sequential , FSM , shift-add . Verilog Implementation #4: Booth-Encoded Multiplier (Signed) Booth multiplication reduces the number of partial products by encoding overlapping groups of bits. For an 8-bit multiplier, radix-4 (modified Booth) reduces 8 partial products to 4 or 5.

module wallace_tree_8bit ( input [7:0] A, B, output [15:0] P ); // Step 1: generate partial products wire [7:0] pp[0:7]; genvar i, j; generate for(i = 0; i < 8; i = i+1) begin assign pp[i] = 8A[i] & B; end endgenerate // Step 2: reduction using full/half adders (not shown in full) // The tree would reduce 8 vectors to 2 vectors (sum and carry) wire [15:0] sum_vec, carry_vec; iverilog -o multiplier_tb multiplier

module array_multiplier_8bit ( input [7:0] A, B, output [15:0] P ); wire [7:0] pp0, pp1, pp2, pp3, pp4, pp5, pp6, pp7; wire [15:0] sum_stage0, sum_stage1, sum_stage2, sum_stage3; // Generate partial products (AND gates) assign pp0 = 8A[0] & B; assign pp1 = 8A[1] & B; assign pp2 = 8A[2] & B; assign pp3 = 8A[3] & B; assign pp4 = 8A[4] & B; assign pp5 = 8A[5] & B; assign pp6 = 8A[6] & B; assign pp7 = 8A[7] & B;

: Educational FPGAs (like BASYS 3 or DE10-Lite), resource-constrained designs without DSP slices. Verilog Implementation #3: Sequential (Pipelined) Multiplier Best for low-area designs where speed is not critical. The multiplication takes 8 clock cycles. : High — this is the most common

module multiplier #(parameter WIDTH = 8) ( input [WIDTH-1:0] a, b, output [2*WIDTH-1:0] product ); assign product = a * b; endmodule For signed, use signed keyword: