module multiplier_8bit( input [7:0] A, input [7:0] B, output [15:0] Product );
module multiplier_8bit( input [7:0] A, input [7:0] B, output [15:0] P );
for high-speed parallel processing. The design is verified through a Verilog testbench and simulated to ensure functional accuracy. 2. Introduction
#10 A = 8'h10; B = 8'h10; // 16 * 16 = 256 #10 check_result(16, 16, 256); 8bit multiplier verilog code github
Takes three inputs ($A, B, C_in$) and outputs a Sum and a Carry.
This report outlines several common implementations for an 8-bit multiplier in Verilog available on GitHub, categorized by their architectural approach. Common 8-Bit Multiplier Architectures
run: vvp $(OUTPUT)
// Generate partial products using AND gates genvar i, j; generate for (i = 0; i < 8; i = i + 1) begin for (j = 0; j < 8; j = j + 1) begin assign pp[i][j] = a[j] & b[i]; end end endgenerate
a = 8'd0; b = 8'd100; #10; expected = 16'd0; check_result();
$finish; end
// Task for checking specific cases easily task check_result; input [7:0] val_a; input [7:0] val_b; input [15:0] expected; begin if (P === expected) $display("%0t\t %d\t %d\t %d\t PASS", $time, val_a, val_b, P); else $display("%0t\t %d\t %d\t %d\t FAIL (Expected %d)", $time, val_a, val_b, P, expected); end endtask
+-----------------------+ data_a [7:0] | | ------------->| Mux / Sign Extension |--> signed_a [15:0] --+ data_b [7:0] | | | ------------->| Mux / Sign Extension |--> signed_b [15:0] --+| Multiplier |===> product [15:0] is_signed | | | Core Math | ------------->|-----------------------+-----------------------+ | clk / rst_n -------------------------------------------------------------->| Use code with caution. How to Run and Simulate
If the current multiplier bit is 1 , the multiplicand is added to the accumulated partial product. If the current multiplier bit is 0 , nothing is added. module multiplier_8bit( input [7:0] A, input [7:0] B,
/////////////////////////////////////////////////////////////////////////////// // 8-bit Sequential Multiplier // Implementation: Shift-and-add algorithm // Uses less hardware but takes 8 clock cycles ///////////////////////////////////////////////////////////////////////////////