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📄 双端口ram的设计与测试（verilog） - 学习实例 - hdl语言 - eda专业论坛 最专业的fpga-ic设计论坛 - powered by discuz!.mht

📁 实现双口ram的读写功能
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      <DIV class=3Dt_smallfont>2007-9-22=20
      =
14:53</DIV></DIV><BR><BR>=D0=B4=B5=C4=BA=DC=BE=AB=C1=B6<BR>=B1=E0=B3=CC=B7=
=E7=B8=F1=D2=B2=B2=BB=B4=ED=A3=AC=B8=C3=CE=C4=B5=B5=D6=D0=D7=A2=CA=CD=B5=C4=
=CF=E0=B5=B1=C3=F7=C8=B7<BR>=D7=D4=BC=BA=D7=DB=BA=CF=BA=CD=B7=C2=D5=E6=B2=
=E2=CA=D4=B9=FD=A3=AC=C3=BB=CE=CA=CC=E2<BR><FONT=20
      color=3Dseagreen><FONT=20
      =
color=3Dred>=CD=C6=BC=F6=A3=BA</FONT>=CF=EB=D1=A7=BA=C3=D0=B4RAM=BA=CD=B2=
=E2=CA=D4=B5=C4=D6=B5=B5=C3=D1=D0=BE=BF</FONT><BR><BR>[<I> =
=B1=BE=CC=FB=D7=EE=BA=F3=D3=C9 reader7510 =D3=DA=20
      2007-9-22 15:16 =B1=E0=BC=AD </I>]</DIV>
      <P =
class=3Dposttags>=CB=D1=CB=F7=B8=FC=B6=E0=CF=E0=B9=D8=D6=F7=CC=E2=B5=C4=CC=
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target=3D_blank>ROM</A> <A=20
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        <DT>=BB=FD=B7=D6</DT>
        <DD>1752&nbsp;</DD>
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        <DD>88 &nbsp;</DD>
        <DT>=D4=DA=CF=DF=CA=B1=BC=E4</DT>
        <DD>54 =D0=A1=CA=B1&nbsp;</DD>
        <DT>=D7=A2=B2=E1=CA=B1=BC=E4</DT>
        <DD>2007-5-26&nbsp;</DD>
        <DT>=D7=EE=BA=F3=B5=C7=C2=BC</DT>
        <DD>2008-12-13&nbsp;</DD></DL>
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onclick=3D"$('postmessage_849276').className=3D't_bigfont'">=B4=F3</EM> =
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 =B7=A2=B1=ED=D3=DA=20
      2007-9-22 14:56&nbsp; <A=20
      =
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      <DIV class=3D"postmessage defaultpost">
      <DIV class=3Dad_pip id=3Dad_thread3_1><A =
href=3D"http://www.vibesic.com/"><FONT=20
      color=3D#ff1155><B>FPGA=B7=BD=B0=B8
      <P>FPGA=C9=E8=BC=C6=B7=FE=CE=F1
      <P>=CF=EE=C4=BF=CD=E2=B0=FC</B></FONT></A></P></DIV>
      <DIV id=3Dad_thread4_1></DIV>
      <H2>=B2=E2=CA=D4</H2>
      <DIV class=3Dt_msgfont=20
      =
id=3Dpostmessage_849276>=B2=E2=CA=D4=D0=B4=B5=C4=B1=C8=C9=E8=BC=C6=B3=A4=B6=
=E0=C1=CB=A3=AC=D0=B4=B5=C4=BA=DC=BA=C3=D6=B5=B5=C3=D1=A7=CF=B0=A3=AC=D2=B2=
=BF=C9=D2=D4=D6=B1=BD=D3=D3=C3=D4=DA=C4=E3=B5=C4=C9=E8=BC=C6=D6=D0<BR>`ti=
mescale 1=20
      ns/100 ps<BR>module test;<BR>parameter width =3D 8; // bus=20
      width<BR>parameter addr =3D 8; // # of addr lines<BR>parameter =
numvecs =3D 20;=20
      // actual number of vectors<BR>parameter Clockper =3D 1000; // =
100ns=20
      period<BR>reg [width-1:0] Data;<BR>reg [addr-1:0] WAddress,=20
      RAddress;<BR>reg Clock, WE, RE,rst;&nbsp;&nbsp;//addition =
rst<BR>reg=20
      [width-1:0] data_in [0:numvecs-1];<BR>reg [width-1:0] data_out=20
      [0:numvecs-1];<BR>wire [width-1:0] Q;<BR>integer i, j, k,=20
      numerrors;<BR>ram u0(.data(Data), .q(Q),=20
      .clk(Clock),<BR>.rst(rst),<BR>.wen(WE),<BR>.ren(RE), =
.waddr(WAddress),=20
      .raddr(<BR>RAddress));<BR>initial<BR>begin<BR>// sequential test =
patterns=20
      entered at neg edge Clock<BR>data_in[0]=3D8'h00;=20
      data_out[0]=3D8'hxx;<BR>data_in[1]=3D8'h01;=20
      data_out[1]=3D8'hxx;<BR>data_in[2]=3D8'h02;=20
      data_out[2]=3D8'hxx;<BR>data_in[3]=3D8'h04;=20
      data_out[3]=3D8'hxx;<BR>data_in[4]=3D8'h08;=20
      data_out[4]=3D8'hxx;<BR>data_in[5]=3D8'h10;=20
      data_out[5]=3D8'hxx;<BR>data_in[6]=3D8'h20;=20
      data_out[6]=3D8'hxx;<BR>data_in[7]=3D8'h40;=20
      data_out[7]=3D8'hxx;<BR>data_in[8]=3D8'h80;=20
      data_out[8]=3D8'hxx;<BR>data_in[9]=3D8'h07;=20
      data_out[9]=3D8'h01;<BR>data_in[10]=3D8'h08;=20
      data_out[10]=3D8'h02;<BR>data_in[11]=3D8'h09;=20
      data_out[11]=3D8'h04;<BR>data_in[12]=3D8'h10;=20
      data_out[12]=3D8'h08;<BR>data_in[13]=3D8'h11;=20
      data_out[13]=3D8'h10;<BR>data_in[14]=3D8'h12;=20
      data_out[14]=3D8'h20;<BR>data_in[15]=3D8'h13;=20
      data_out[15]=3D8'h40;<BR>data_in[16]=3D8'h14;=20
      data_out[16]=3D8'h80;<BR>data_in[17]=3D8'haa;=20
      data_out[17]=3D8'h80;<BR>data_in[18]=3D8'h55;=20
      data_out[18]=3D8'haa;<BR>data_in[19]=3D8'haa;=20
      =
data_out[19]=3D8'h55;<BR>end<BR>initial<BR>begin<BR>rst=3D0;<BR>Clock =
=3D=20
      0;<BR>WE =3D 0;<BR>RE =3D 0;<BR>WAddress =3D 0;<BR>RAddress =3D =
0;<BR>Data =3D=20
      0;<BR>numerrors =3D 0;<BR>#200 rst=3D1;&nbsp;&nbsp;//there rst =
reset to=20
      ram<BR>#200 rst=3D0;<BR>end<BR>always#(Clockper / 2) Clock =3D=20
      ~Clock;<BR>initial<BR>begin<BR>#2450 WE =3D 1;<BR>#8000 WE =3D =
0;<BR>RE =3D=20
      1;<BR>#8000 RE =3D 0;<BR>WE =3D 1;<BR>#1000 RE =3D=20
      1;<BR>end<BR>initial<BR>begin<BR>#1450;<BR>for (k =3D 0; k &lt;=3D =
width; k =3D=20
      k + 1)<BR>#1000 WAddress =3D k;<BR>WAddress =3D=20
      0;<BR>end<BR>initial<BR>begin<BR>#9450;<BR>for (j =3D 0; j &lt;=3D =
width; j =3D=20
      j + 1)<BR>#1000 RAddress =3D j;<BR>RAddress =3D=20
      0;<BR>end<BR>initial<BR>begin<BR>$display("\nBeginning=20
      Simulation...");<BR>//skip first rising edge<BR>for (i =3D 0; i =
&lt;=3D=20
      numvecs-1; i =3D i + 1)<BR>begin<BR>@(negedge Clock);<BR>// apply =
test=20
      pattern at neg edge<BR>Data =3D data_in<I>;<BR>@(posedge =
Clock)<BR>#450;=20
      //45 ns later<BR>// check result at posedge + 45=20
      ns<BR>$display("Pattern#%d time%d: WE=3D%b; Waddr=3D%h; RE=3D%b; =
Raddr=3D%h;=20
      Data=3D%h; Expected Q=3D%h;Actual Q=3D%h", i, $stime, WE, =
WAddress, RE,=20
      RAddress,Data, data_out<I>, Q);<BR>if ( Q !=3D=3D data_out<I>=20
      )<BR>begin<BR>$display(" ** Error");<BR>numerrors =3D numerrors +=20
      1;<BR>end<BR>end<BR>if (numerrors =3D=3D 0)<BR>$display("Good! End =
of Good=20
      Simulation.");<BR>else<BR>if (numerrors &gt; =
1)<BR>$display(<BR>"%0d=20
      ERRORS! End of Faulty=20
      Simulation.",<BR>numerrors);<BR>else<BR>$display(<BR>"1 ERROR! End =
of=20
      Faulty Simulation.");<BR>#1000 $finish; // after 100 ns=20
      later<BR>end<BR>endmodule</I></I></I><BR><BR>[<I> =
=B1=BE=CC=FB=D7=EE=BA=F3=D3=C9 reader7510 =D3=DA=20
      2008-12-13 11:01 =B1=E0=BC=AD </I>]</DIV>
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        <DT>=CC=FB=D7=D3</DT>
        <DD>139&nbsp;</DD>
        <DT>=BE=AB=BB=AA</DT>
        <DD><A=20
        =
href=3D"http://www.edacn.net/bbs/digest.php?authorid=3D128121">0</A>&nbsp=
;</DD>
        <DT>=BB=FD=B7=D6</DT>
        <DD>1752&nbsp;</DD>
        <DT>=BB=EE=D4=BE=D6=B8=CA=FD</DT>
        <DD>88 &nbsp;</DD>
        <DT>=D4=DA=CF=DF=CA=B1=BC=E4</DT>
        <DD>54 =D0=A1=CA=B1&nbsp;</DD>
        <DT>=D7=A2=B2=E1=CA=B1=BC=E4</DT>
        <DD>2007-5-26&nbsp;</DD>
        <DT>=D7=EE=BA=F3=B5=C7=C2=BC</DT>
        <DD>2008-12-13&nbsp;</DD></DL>
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      <STRONG title=3D=B6=A5=B2=BF onclick=3Dscroll(0,0)>TOP</STRONG> =
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href=3D"http://edacn.net/bbs/viewthread.php?tid=3D140053&amp;extra=3Dpage=
%3D1"><FONTCOLOR=3D0000FF><B>=CA=FD=D7=D6=C7=B0=B6=CB=C9=E8=BC=C6=CC=E1=B8=
=DF=B0=E0=BF=AA=B0=E0=D6=D0=A3=AC=D2=BB=A1=A2=C8=FD=CD=ED=A3=AC=D6=DC=C1=F9=
=B0=D7=CC=EC=CA=DA=BF=CE=A3=AC=BB=B6=D3=AD=C3=E2=B7=D1=CA=D4=CC=FDb&gt;</=
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