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带有握手信号的无符号数乘法verilog+ testbench 代码

uumultiplier.v

module uumultiplier #(parameter       NUMBER1      =      8                    ,parameter       NUMBER2                                                                                                                                                                                                            =      10)(input  [NUMBER1-1 : 0]                  input1       ,input  [NUMBER2-1 : 0]                  input2       ,input                                   clk          ,input                                   rst_n        ,input                                   begin_en     ,output  reg                             finish_en    ,output  reg [NUMBER1+NUMBER2 : 0]       out);//======================================================================================\//                define parameter  and  internal signal                                \//======================================================================================\reg [NUMBER1+NUMBER2 : 0]       out1    ;//==========================================================================================\//                     next   is  main  code                                                 \\//===========================================================================================\\
always@(posedge clk or negedge rst_n)beginif(rst_n == 0)beginout <= 0 ;endelse  if(begin_en && finish_en )beginout <= input1 * input2 ;endelseout <= out ;endalways@(posedge clk or negedge rst_n )beginif(rst_n == 0)beginout1 <= 0 ;endelseout1 <= out ;endalways@(posedge clk or negedge rst_n)beginif(rst_n == 0)beginfinish_en <= 1'b1 ;endelse if(out != out1)beginfinish_en <= 1'b1 ;endelsefinish_en <= 1'b0 ;endendmodule

uumultiplier_tb.v

module uumultiplier_tb #(parameter       NUMBER1      =      8                    ,parameter       NUMBER2      =      10                   );reg  [NUMBER1-1 : 0]                  input1      ;
reg  [NUMBER2-1 : 0]                  input2      ;
reg                                   clk         ;
reg                                   rst_n       ;
reg                                   begin_en    ;
wire                             finish_en        ;
wire [NUMBER1+NUMBER2 : 0]       out              ;uumultiplier#(.NUMBER1    ( NUMBER1 ),.NUMBER2    ( NUMBER2 )
)u_uumultiplier(.input1     ( input1     ),.input2     ( input2     ),.clk        ( clk        ),.rst_n      ( rst_n      ),.begin_en   ( begin_en   ),.finish_en  ( finish_en  ),.out        ( out        )
);always    #5     clk = ~clk   ;initial begin clk =  0 ;rst_n = 0 ;input1 = 1 ;input2 = 1 ;begin_en = 1 ;#20rst_n = 1 ;input1 = 10 ; input2 = 8 ;#20input1 = 12 ; input2 = 8 ;#20 input1 = 1 ; input2 = 8 ;#20input1 = 3 ; input2 = 5 ;end
endmodule