Update v1.0.6

2016-02-16 23:22:09 +05:30
parent 62d04a0372
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+<!doctype html>
+
+<title>CodeMirror: Verilog mode</title>
+<meta charset="utf-8"/>
+<link rel=stylesheet href="../../doc/docs.css">
+
+<link rel="stylesheet" href="../../lib/codemirror.css">
+<script src="../../lib/codemirror.js"></script>
+<script src="verilog.js"></script>
+<style>.CodeMirror {border: 2px inset #dee;}</style>
+<div id=nav>
+  <a href="http://codemirror.net"><img id=logo src="../../doc/logo.png"></a>
+
+  <ul>
+    <li><a href="../../index.html">Home</a>
+    <li><a href="../../doc/manual.html">Manual</a>
+    <li><a href="https://github.com/marijnh/codemirror">Code</a>
+  </ul>
+  <ul>
+    <li><a href="../index.html">Language modes</a>
+    <li><a class=active href="#">Verilog</a>
+  </ul>
+</div>
+
+<article>
+<h2>Verilog mode</h2>
+<form><textarea id="code" name="code">
+/* Verilog demo code */
+
+module butterfly
+  #(
+    parameter WIDTH = 32,
+    parameter MWIDTH = 1
+    )
+   (
+    input wire                     clk,
+    input wire                     rst_n,
+    // m_in contains data that passes through this block with no change.
+    input wire [MWIDTH-1:0]        m_in,
+    // The twiddle factor.
+    input wire signed [WIDTH-1:0]  w,
+    // XA
+    input wire signed [WIDTH-1:0]  xa,
+    // XB
+    input wire signed [WIDTH-1:0]  xb,
+    // Set to 1 when new data is present on inputs.
+    input wire                     x_nd,
+    // delayed version of m_in.
+    output reg [MWIDTH-1:0]        m_out,
+    // YA = XA + W*XB
+    // YB = XA - W*XB
+    output wire signed [WIDTH-1:0] ya,
+    output wire signed [WIDTH-1:0] yb,
+    output reg                     y_nd,
+    output reg                     error
+    );
+
+   // Set wire to the real and imag parts for convenience.
+   wire signed [WIDTH/2-1:0]        xa_re;
+   wire signed [WIDTH/2-1:0]        xa_im;
+   assign xa_re = xa[WIDTH-1:WIDTH/2];
+   assign xa_im = xa[WIDTH/2-1:0];
+   wire signed [WIDTH/2-1: 0]       ya_re;
+   wire signed [WIDTH/2-1: 0]       ya_im;
+   assign ya = {ya_re, ya_im};
+   wire signed [WIDTH/2-1: 0]       yb_re;
+   wire signed [WIDTH/2-1: 0]       yb_im;
+   assign yb = {yb_re, yb_im};
+
+   // Delayed stuff.
+   reg signed [WIDTH/2-1:0]         xa_re_z;
+   reg signed [WIDTH/2-1:0]         xa_im_z;
+   // Output of multiplier
+   wire signed [WIDTH-1:0]          xbw;
+   wire signed [WIDTH/2-1:0]        xbw_re;
+   wire signed [WIDTH/2-1:0]        xbw_im;
+   assign xbw_re = xbw[WIDTH-1:WIDTH/2];
+   assign xbw_im = xbw[WIDTH/2-1:0];
+   // Do summing
+   // I don't think we should get overflow here because of the
+   // size of the twiddle factors.
+   // If we do testing should catch it.
+   assign ya_re = xa_re_z + xbw_re;
+   assign ya_im = xa_im_z + xbw_im;
+   assign yb_re = xa_re_z - xbw_re;
+   assign yb_im = xa_im_z - xbw_im;
+   
+   // Create the multiply module.
+   multiply_complex #(WIDTH) multiply_complex_0
+     (.clk(clk),
+      .rst_n(rst_n),
+      .x(xb),
+      .y(w),
+      .z(xbw)
+      );
+
+  always @ (posedge clk)
+    begin
+       if (!rst_n)
+         begin
+            y_nd <= 1'b0;
+            error <= 1'b0;
+         end
+       else
+         begin
+            // Set delay for x_nd_old and m.
+            y_nd <= x_nd;
+            m_out <= m_in;
+            if (x_nd)
+              begin
+                 xa_re_z <= xa_re/2;
+                 xa_im_z <= xa_im/2;
+              end
+         end
+    end
+   
+endmodule
+</textarea></form>
+
+    <script>
+      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
+        lineNumbers: true,
+        mode: "text/x-verilog"
+      });
+    </script>
+
+    <p>Simple mode that tries to handle Verilog-like languages as well as it
+    can. Takes one configuration parameters: <code>keywords</code>, an
+    object whose property names are the keywords in the language.</p>
+
+    <p><strong>MIME types defined:</strong> <code>text/x-verilog</code> (Verilog code).</p>
+  </article>