名称:FIFO设计(深度16,位宽为8)Verilog代码modelsim仿真
软件:modelsim
语言:Verilog
代码功能:
FIFO设计(深度16,位宽为8)
1、设计深度16,位宽为8的FIFO
2、支持输出almost_full,almost_empty
FPGA代码Verilog/VHDL代码资源下载:www.hdlcode.com
演示视频:
设计文档:
1. 程序文件
2. Testbench文件
3. 仿真图
部分代码展示:
//fifo 16×8fifo
module a_fifo
(
input clk,
input rst,
input [7:0] din,
input wr_en,
input rd_en,
output reg [7:0] dout,
output empty,
output full,
output almost_full,
output almost_empty
);
reg [7:0] ram [15:0];
reg [6:0] count=7'd0;
reg [6:0] rp=7'd0;
reg [6:0] wp=7'd0;
integer i;
always@(posedge clk)
if(rst)begin
wp<=7'd0;
rp<=7'd0;
dout<=8'd0;
count<=7'd0;
for(i=0;i<16;i=i+1)
ram[i]<=8'b00000000;
end
else
case({rd_en,wr_en})
2'b00:count<=count;
2'b01:
if(~full)begin
ram[wp]<=din;
if(wp>=7'd15)
wp<=7'd0;
else
wp<=wp+7'd1;
count<=count+7'd1;
rp<=rp;
end
2'b10:
if(~empty)begin
dout<=ram[rp];
if(rp>=7'd15)
rp<=7'd0;
else
rp<=rp+7'd1;
count<=count-7'd1;
end
2'b11:
if(empty)begin
ram[wp]<=din;
if(wp>=7'd15)
wp<=7'd0;
else
wp<=wp+7'd1;
count<=count+7'd1;
end
else if(full)begin
dout<=ram[rp];
if(rp>=7'd15)
rp<=7'd0;
else
rp<=rp+7'd1;
count<=count-7'd1;
end
else begin
点击链接获取代码文件:http://www.hdlcode.com/index.php?m=home&c=View&a=index&aid=1122
阅读全文
679