实验现象：

程序运行时，绿色led闪烁（目前，具体的乘法器调用请参考iCore3乘法器例程）

核心代码：

module multiplier_ctrl(    input clk_25m,    input rst_n,    output fpga_ledg);//--------------------clk_10hz------------------------------//reg[22:0]cnt;reg clk_10hz;always @(posedge clk_25m or negedge rst_n)    if(!rst_n)        begin            clk_10hz <= 1'd0;            cnt <= 23'd0;        end    else if(cnt == 23'd2499_999)        begin            clk_10hz <= ~clk_10hz;            cnt <= 23'd0;        end    else cnt <= cnt + 1'd1;//--------------------data_in&data_out-----------------------//reg[7:0]a;always @(posedge clk_10hz or negedge rst_n)    if(!rst_n)        a <= 8'd0;    else if(a == 8'd250)        a <= 8'd0;    else a <= a + 1'd1;        my_mult  u1(    .dataa(a),    .datab(a),    .result(out));wire [15:0]out;assign fpga_ledg = out[6];//--------------------endmodule----------------------------//endmodule

源代码下载链接：

链接： 密码：h80p

iCore4链接：