2015-02-19 06:36:54 -06:00
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<html><head>
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<title>YosysJS Example Application #02</title>
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<script type="text/javascript" src="yosysjs.js"></script>
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2021-09-18 09:24:40 -05:00
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<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/wavedrom/2.8.1/skins/default.min.js" ></script>
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<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/wavedrom/2.8.1/wavedrom.min.js"></script>
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2015-02-19 06:36:54 -06:00
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<style type="text/css">
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.noedit { color: #666; }
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</style>
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<script id="golden_verilog" type="text/plain">
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module ref(input clk, reset, input [7:0] A, output reg [7:0] Y);
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always @(posedge clk) begin
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if (reset)
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Y <= 0;
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else
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Y <= ((Y << 5) + Y) ^ A;
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end
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endmodule
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</script>
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</head><body>
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<div id="popup" style="position: fixed; left: 0; top: 0; width:100%; height:100%; text-align:center; z-index: 1000;
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background-color: rgba(100, 100, 100, 0.5);"><div style="width:300px; margin: 200px auto; background-color: #88f;
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border:3px dashed #000; padding:15px; text-align:center;"><span id="popupmsg">Loading...</span></div>
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</div>
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<h1>YosysJS Example Application #03</h1>
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<b>Your mission:</b> Create a behavioral Verilog model for the following circuit:
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<p/>
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2015-02-21 07:25:34 -06:00
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<div id="main" style="visibility: hidden">
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<svg id="schem" width="800"></svg>
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<p/>
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<pre id="code" style="width: 800px; border:2px solid #000; padding: 0.5em;"><span class="noedit">module top(input clk, reset, input [7:0] A, output reg [7:0] Y);
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2015-02-21 07:31:02 -06:00
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always @(posedge clock) begin</span><span class="edit" contenteditable="true">
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Y <= A | {4{reset}};
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</span><span class="noedit">end
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endmodule</span></pre><p/>
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2015-02-21 07:25:34 -06:00
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<input type="button" value="Check Model" onclick="check_model()"> <span id="checkmessage"></span>
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<p/>
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<p id="wave"> </p>
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</div>
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2015-02-19 06:36:54 -06:00
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<script type="text/javascript">
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function on_ys_ready() {
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ys.write_file('golden.v', document.getElementById('golden_verilog').textContent);
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ys.run('echo on; read_verilog golden.v; proc;;');
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ys.run('show -notitle -width -stretch');
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YosysJS.dot_into_svg(ys.read_file('show.dot'), 'schem');
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document.getElementById('popup').style.visibility = 'hidden';
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document.getElementById('popupmsg').textContent = 'Please wait..';
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2015-02-21 07:25:34 -06:00
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document.getElementById('main').style.visibility = 'visible';
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2015-02-19 06:36:54 -06:00
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}
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function check_model() {
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function work() {
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ys.remove_file('wave.json');
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ys.write_file('code.v', document.getElementById('code').textContent);
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ys.errmsg = '';
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ys.run('design -reset; read_verilog code.v; hierarchy -top top; proc; opt; flatten; hierarchy; ' +
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'read_verilog golden.v; proc; miter -equiv -ignore_gold_x -make_outputs -flatten ref top miter; ' +
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'hierarchy -top miter; clean -purge; sat -set-init-undef -seq 8 -dump_json wave.json -show-ports ' +
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'-max_undef -prove trigger 0 miter');
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w = document.getElementById('wave')
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if (ys.errmsg) {
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w.innerHTML = '<b><pre>ERROR: ' + ys.errmsg.replace('&', '&').replace('<', '<').replace('>', '>') + '</pre></b>';
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} else {
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wdata = ys.read_file('wave.json');
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if (wdata) {
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wdata = JSON.parse(wdata);
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function wsignal(signame, newname) {
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for (i = 0; i < wdata["signal"].length; i++)
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if (wdata["signal"][i].name == signame) {
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if (newname)
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wdata["signal"][i].name = newname;
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return wdata["signal"][i];
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}
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return {};
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}
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wdata2 = {
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"signal" : [
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{ name: 'clk', wave: 'P........' },
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wsignal("trigger"),
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{},
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[ "Inputs", wsignal("in_reset", "reset"), wsignal("in_A", "A") ],
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{},
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[ "Y Output", wsignal("gold_Y", "Ref"), wsignal("gate_Y", "UUT") ],
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],
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"config" : wdata["config"]
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};
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wdata2 = JSON.stringify(wdata2)
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w.innerHTML = '<b>The model did not pass verification:</b><p/>' +
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'<script type="WaveDrom">' + wdata2 + '<\/script>';
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WaveDrom.ProcessAll();
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} else {
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w.innerHTML = '<b>Congratulations! The model did pass verification.</b><p/>';
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}
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}
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document.getElementById('popup').style.visibility = 'hidden';
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}
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document.getElementById('popup').style.visibility = 'visible';
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window.setTimeout(work, 100);
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}
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YosysJS.load_viz();
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var ys = YosysJS.create('', on_ys_ready);
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ys.logprint = true;
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</script>
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</body></html>
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