2015-02-16 05:41:48 -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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</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;"><div
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style="width:300px; margin: 200px auto; background-color: #88f; border:3px dashed #000;
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padding:15px; text-align:center;"><span id="popupmsg">Loading...</span></div>
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</div>
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<h1>YosysJS Example Application #02</h1>
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<iframe id="ys" style="width: 800px; height: 100px;"></iframe><p/>
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<textarea id="code" style="width: 800px; height: 300px;">
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// borrowed with some modifications from
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// http://www.ee.ed.ac.uk/~gerard/Teach/Verilog/manual/Example/lrgeEx2/cooley.html
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module up3down5(clock, data_in, up, down, carry_out, borrow_out, count_out, parity_out);
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input [8:0] data_in;
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input clock, up, down;
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output reg [8:0] count_out;
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output reg carry_out, borrow_out, parity_out;
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reg [9:0] cnt_up, cnt_dn;
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reg [8:0] count_nxt;
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always @(posedge clock)
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begin
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cnt_dn = count_out - 3'b 101;
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cnt_up = count_out + 2'b 11;
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case ({up,down})
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2'b 00 : count_nxt = data_in;
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2'b 01 : count_nxt = cnt_dn;
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2'b 10 : count_nxt = cnt_up;
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2'b 11 : count_nxt = count_out;
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default : count_nxt = 9'bX;
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endcase
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parity_out <= ^count_nxt;
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carry_out <= up & cnt_up[9];
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borrow_out <= down & cnt_dn[9];
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count_out <= count_nxt;
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end
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endmodule
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</textarea><p/>
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<input type="button" value="Before Behavioral Synth" onclick="synth1()">
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<input type="button" value="After Behavioral Synth" onclick="synth2()">
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<input type="button" value="After RTL Synth" onclick="synth3()">
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<input type="button" value="After Gate-Level Synth" onclick="synth4()"><p/>
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<svg id="svg" width="800"></svg>
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</td></tr></table>
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<script type="text/javascript">
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YosysJS.load_viz();
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function on_ys_ready() {
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document.getElementById('popup').style.visibility = 'hidden';
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document.getElementById('popupmsg').textContent = 'Please wait..';
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}
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function synth1() {
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function work() {
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ys.write_file("input.v", document.getElementById('code').value);
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ys.run('design -reset; read_verilog input.v; show -stretch');
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2015-02-16 06:23:54 -06:00
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YosysJS.dot_into_svg(ys.read_file('show.dot'), 'svg');
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2015-02-16 05:41:48 -06:00
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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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function synth2() {
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function work() {
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ys.write_file("input.v", document.getElementById('code').value);
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ys.run('design -reset; read_verilog input.v; proc; opt_clean; show -stretch');
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2015-02-16 06:23:54 -06:00
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YosysJS.dot_into_svg(ys.read_file('show.dot'), 'svg');
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2015-02-16 05:41:48 -06:00
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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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function synth3() {
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function work() {
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ys.write_file("input.v", document.getElementById('code').value);
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ys.run('design -reset; read_verilog input.v; synth -run coarse; show -stretch');
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2015-02-16 06:23:54 -06:00
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YosysJS.dot_into_svg(ys.read_file('show.dot'), 'svg');
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2015-02-16 05:41:48 -06:00
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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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function synth4() {
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function work() {
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ys.write_file("input.v", document.getElementById('code').value);
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ys.run('design -reset; read_verilog input.v; synth -run coarse; synth -run fine; show -stretch');
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2015-02-16 06:23:54 -06:00
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YosysJS.dot_into_svg(ys.read_file('show.dot'), 'svg');
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2015-02-16 05:41:48 -06:00
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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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var ys = YosysJS.create('ys', on_ys_ready);
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ys.verbose = true;
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ys.echo = true;
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</script>
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</body></html>
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