异步fifo测试程序求助

本人这两天看Clifford E. Cummings写的异步fifo type2，是用象限法判断的，觉着差不多懂了，把源码拷贝进去，然后写测试程序，但发现波形中的读写指针都不走啊，求助各位！文章中的结构是这样的：

附上测试代码，各位看看代码是不是有问题啊：
module fifo2_test;

// Inputs
reg [7:0] wdata;
reg winc;
reg wclk;
reg wrst_n;
reg rinc;
reg rclk;
reg rrst_n;

// Outputs
wire [7:0] rdata;
wire wfull;
wire rempty;

// Instantiate the Unit Under Test (UUT)
fifo2 uut (
.rdata(rdata),
.wfull(wfull),
.rempty(rempty),
.wdata(wdata),
.winc(winc),
.wclk(wclk),
.wrst_n(wrst_n),
.rinc(rinc),
.rclk(rclk),
.rrst_n(rrst_n)
);

initial begin
// Initialize Inputs
wdata = 0;
//winc = 0;
//wclk = 0;
//wrst_n = 0;
rinc = 0;
rclk = 0;
rrst_n = 0;
      end
// Wait 100 ns for global reset to finish


// Add stimulus here
initial begin
wclk=0;
forever //generate wclk singal
#10
wclk=！wclk;
end

initial begin
winc=0;
#100
winc=1 ;
end







//forever//generate rclk singal
//begin
//#10;
//rclk=~rclk;
//end

initial begin
wrst_n=1;
#50 wrst_n=0;
end



initial begin
rrst_n=1;
#80
rrst_n=0;
end


initial begin
rinc=0;
#150
rinc=1;
end

initial begin
rclk=0;
forever
#20
      rclk=！rclk;
      end


initial
begin
wdata=0;
#100

        @(posedge wclk) wdata=01101100;
     @(posedge wclk) #0 wdata=01111111;
     @(posedge wclk) #0 wdata=10000000;
     @(posedge wclk) #0 wdata=11111000;
     @(posedge wclk) #0 wdata=10100001;
     @(posedge wclk) #0 wdata=11100011;
     @(posedge wclk) #0 wdata=10011011;
     @(posedge wclk) #0 wdata=10110111;
     @(posedge wclk) #0 wdata=01111000;
     @(posedge wclk) #0 wdata=11100111;

        @(posedge wclk) wdata=01101101;
     @(posedge wclk) #0 wdata=11111111;
     @(posedge wclk) #0 wdata=10110000;
     @(posedge wclk) #0 wdata=11111100;
     @(posedge wclk) #0 wdata=10100011;
     @(posedge wclk) #0 wdata=1110111;
     @(posedge wclk) #0 wdata=10011011;
     @(posedge wclk) #0 wdata=10110111;
     @(posedge wclk) #0 wdata=01111010;
     @(posedge wclk) #0 wdata=11101111;



end
endmodule

wrst_n这样命名，应该是低电平有效吧，你把作为高电平有效了。