Subversion Repositories integer_square_root

`timescale 1ns / 100ps
//////////////////////////////////////////////////////////////////////////////////
// Company: 
// Engineer: Yihua Liu
// 
// Create Date: 2022/06/06 13:54:21
// Design Name: 
// Module Name: mult
// Project Name: lab_3_a
// Target Devices: xczu7eg-ffvf1517-2-i
// Tool Versions: 
// Description: 
// 
// Dependencies: 
// 
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
// 
//////////////////////////////////////////////////////////////////////////////////


// This is an 8 stage (9 depending on how you look at it) pipelined 
// multiplier that multiplies 2 64-bit integers and returns the low 64 bits 
// of the result.  This is not an ideal multiplier but is sufficient to 
// allow a faster clock period than straight *
// This module instantiates 8 pipeline stages as an array of submodules.
module mult(
                                input clock, reset,
                                input [63:0] mcand, mplier,
                                input start,
                                
                                output [63:0] product,
                                output done
                        );

        // This parameter is used to change the number of stages.
        // For example, if N_STAGE = 8, we are using an 8-stage pipelined multiplier.
    parameter N_STAGE = 8;
        logic [63:0] mcand_out, mplier_out;
        logic [(N_STAGE-1)*64-1:0] internal_products, internal_mcands, internal_mpliers;
        logic [N_STAGE-2:0] internal_dones;
  
        mult_stage #(.N_STAGE(N_STAGE)) mstage [N_STAGE-1:0]  (
                .clock(clock),
                .reset(reset),
                .product_in({internal_products,64'h0}),
                .mplier_in({internal_mpliers,mplier}),
                .mcand_in({internal_mcands,mcand}),
                .start({internal_dones,start}),
                .product_out({product,internal_products}),
                .mplier_out({mplier_out,internal_mpliers}),
                .mcand_out({mcand_out,internal_mcands}),
                .done({done,internal_dones})
        );

endmodule