八位流水线乘法器

[复制链接]

1649|0

手机看帖

扫描二维码
随时随地手机跟帖

电梯直达

楼主

布川酷子|

楼主 | 2011-10-17 11:13 | 只看该作者回帖奖励

|倒序浏览 |阅读模式

乘法器, ST, store, AI, ge

贴代码如下：
module multiplier_8(clk,rst_n,mul_a,mul_b,result
);
input clk;
input rst_n;
input[7:0] mul_a;
input[7:0] mul_b;
output[15:0] result;
reg[15:0] result;
reg[15:0] store7;
reg[15:0] store6;
reg[15:0] store5;
reg[15:0] store4;
reg[15:0] store3;
reg[15:0] store2;
reg[15:0] store1;
reg[15:0] store0;
reg[15:0] add01;
reg[15:0] add23;
reg[15:0] add45;
reg[15:0] add67;
reg[15:0] add0123;
reg[15:0] add4567;
[email=always@(posedge]always @ (posedge[/email][email=always@(posedge] clk or [/email][email=always@(posedge]negedge[/email][email=always@(posedge] rst_n)[/email]

begin
if(!rst_n)
begin
  store7 <= 16'b0;
  store6 <= 16'b0;
  store5 <= 16'b0;
  store4 <= 16'b0;
  store6 <= 16'b0;
  store2 <= 16'b0;
  store1 <= 16'b0;
  store0 <= 16'b0;
  add01  <= 16'b0;
  add23  <= 16'b0;
  add45  <= 16'b0;
  add67  <= 16'b0;
  add0123  <= 16'b0;
  add4567  <= 16'b0;
end
else

begin
  store7 <= mul_b[7] ? {1'b0,mul_a,7'b0}:16'b0;
  store6 <= mul_b[6] ? {2'b0,mul_a,6'b0}:16'b0;
  store5 <= mul_b[5] ? {3'b0,mul_a,5'b0}:16'b0;
  store4 <= mul_b[4] ? {4'b0,mul_a,4'b0}:16'b0;
  store3 <= mul_b[3] ? {5'b0,mul_a,3'b0}:16'b0;
  store2 <= mul_b[2] ? {6'b0,mul_a,2'b0}:16'b0;
  store1 <= mul_b[1] ? {7'b0,mul_a,1'b0}:16'b0;
  store0 <= mul_b[0] ? {8'b0,mul_a}:16'b0;
  add67  <= store7+store6;
  add45  <= store5+store4;
  add23  <= store3+store2;
  add01  <= store1+store0;
  add0123  <= add01 + add23;
  add4567  <= add45 + add67;
  result <= add0123 + add4567;
end
end
endmodule
代码说明如下：
两个N位二进制数经x,y的乘积用简单的方法计算就是利用移位操作来实现，用公式可以表示为：