8bit Multiplier Verilog Code Github May 2026

The Wallace tree uses parallel carry-save adders to reduce partial products in logarithmic time. An 8-bit Wallace tree reduces 8 products to 2 in 3–4 levels, then a final fast adder.

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;
// Step 3: final addition
assign P = sum_vec + (carry_vec << 1);

endmodule

Performance: Fastest for 8-bit (critical path ~log2(8) adder delays).
Area: Larger than sequential but smaller than full array (due to compression).
GitHub search tip: Look for wallace-tree-verilog or compressor-adder. 8bit multiplier verilog code github

---

├── 8bit_multiplier.v # Combinational multiplier ├── 8bit_multiplier_seq.v # Sequential multiplier
├── tb_8bit_multiplier.v # Testbench ├── Makefile # Simulation commands └── README.md # This file The Wallace tree uses parallel carry-save adders to

## Usage

How to synthesize: combinational module maps directly to multiplier DSP/logic; sequential maps to small FSM + adder.
License: MIT (or choose preferred)