diff --git a/index.html b/index.html
index 34656d5cf724fb44d7dd164454cdd9d491c76a72..6bb1cece0a5244c7d30f7f1ce431430dc939b616 100644
--- a/index.html
+++ b/index.html
@@ -1,147 +1,9 @@
-<html>
-<head>
-</head>
-<body>
-
<!DOCTYPE html>
+<html lang="en">
+<head>
<meta charset="utf-8">
-<style>
-body {
- font: 14px sans-serif;
-}
-
-text {
- font: 10px sans-serif;
-}
-.axis path,
-.axis line {
- fill: none;
- stroke: #999;
- shape-rendering: crispEdges;
-}
-.dot {
- stroke: #000;
- stroke-width:0px;
-}
-
-</style>
-
-<body>
-
-<script src="d3.v3.min.js"></script>
-
-<h1>Ring Oscillators</h1>
-<p>We started this page to catalog tests of speed for a variety of microprocessors and electronics modules. Here we define speed as how fast information can transit from external electronics into the core where microcode is running and back out again. A good way to test this is by constructing a ring oscillator, which simply sends token back and forth, producing a waveform that can be measured with an oscilloscope.</p>
-
-<h2>GPIO</h2>
-<p>To measure speed across a GPIO layer, we use a logic level as our token. We also enforce that the token must reach the CPU, where code is running, rather than simply be inverted by digital logic or an event system.</p>
-
-<div id='gpio'></div>
-
-<h2>RF</h2>
-<p>To measure speed across a radio link, we use the smallest supported packet.</p>
-<div id='rf'></div>
-
-<h2>WildWest</h2>
-<p>Here we test embedded platforms that stray from the Harvard Architecture ... I.E FPGAs, PSOCs etc, including event systems or digital logic configurable in other microcontrollers (i.e. the XMEGA).</p>
-<div id='wildwest'></div>
-
-<p>This page is part of a public gitlab project available <a href='https://gitlab.cba.mit.edu/pub/ring'>here</a>.</p>
-
-<p>We've also started testing embedded network performance. That documentation is <a href="https://pub.pages.cba.mit.edu/networks/">here</a>.
-
-<script>
-function make_graph(div_id,json_key,axis_labels,use_khz){
- var margin = {top: 20, right: 20, bottom: 30, left: 40},
- width = 960 - margin.left - margin.right,
- height = 600 - margin.top - margin.bottom;
- var x = d3.scale.linear().range([0, width]);
- var y = d3.scale.linear().range([height, 0]);
- //var y = d3.scale.log().range([height, 0]);
- var color = d3.scale.category10();
- var xAxis = d3.svg.axis().scale(x).orient("bottom").tickSize(-height,0);
- var yAxis = d3.svg.axis().scale(y).orient("left").tickSize(-width,0);
-
- var svg = d3.select(div_id).append("svg")
- .attr("width", width + margin.left + margin.right)
- .attr("height", height + margin.top + margin.bottom)
- .append("g")
- .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
-
- d3.json("ring.json", function(error, json) {
- if (error) throw error;
- data = json[json_key];
- console.log(data);
- update(data);
- });
-
- function update(data) {
- var cols = d3.scale.category10();
-
- function period_to_freq(p){
- if (use_khz) return 1000./p;
- else return 1/p;
- }
-
- //for linear
- x.domain([0,d3.max(data, function(d) { return 1.01*d.dev_board_price; })]).nice();
- y.domain([0,d3.max(data, function(d) { return 1.01*period_to_freq(d.ring_period); })]).nice();
- //for log
- //x.domain(d3.extent(data, function(d) { return 1.1*d.dev_board_price; })).nice();
- //y.domain(d3.extent(data, function(d) { return 1.1*period_to_freq(d.ring_period); })).nice();
-
- var node = svg.selectAll("g").data(data).enter().append("g").append("a")
- .attr("xlink:href", function(d) { return d.subdirectory_path; });
-
- node.append("circle")
- .attr("class", "dot")
- .attr("cx", function(d) { return x(d.dev_board_price); })
- .attr("cy", function(d) { return y( 1.0*period_to_freq(d.ring_period) ); })
- .attr("r", 3.5)
- .style("fill",function(d,i){return cols(i);});
- node.append("text")
- .attr("x", function(d) { return x(d.dev_board_price)+5; })
- .attr("y", function(d) { return y( 1.0*period_to_freq(d.ring_period) ); })
- .style("font-size","15px")
- .style("font-family","sans-serif")
- .text(function(d) { return d.name; });
-
- svg.insert("g",":first-child")
- .attr("class", "x axis")
- .attr("transform", "translate(0," + height + ")")
- .call(xAxis)
- .append("text")
- .attr("class", "label")
- .attr("x", width)
- .attr("y", 25)
- .style("text-anchor", "end")
- .style("font-size","15px")
-
- .text(axis_labels[0]);
-
- svg.insert("g",":first-child")
- .attr("class", "y axis")
- .call(yAxis)
- .append("text")
- .attr("class", "label")
- .attr("transform", "rotate(-90)")
- .attr("y", -25)
- .attr("dy", ".2em")
- .style("text-anchor", "end")
- .style("font-size","15px")
- .text(axis_labels[1])
- }
-
-
-}
-
-make_graph("#gpio","gpio",["dev board price ($)", "ring frequency (MHz)"],0)
-make_graph("#rf","rf",["dev board price ($)", "ring frequency (kHz)"],1)
-make_graph("#wildwest","wildwest",["dev board price ($)", "ring frequency (MHz)"],0)
-
-
-</script>
-
-
-</body>
-</html>
+<title>ring oscillator timing tests</title>
+</head>
+<body link="black" alink="black" vlink="black">
+<font face="bitstream vera sans,arial,helvetica,sans-serif">
+prior page <a href=prior/index.html>here</a>
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diff --git a/prior/index.html b/prior/index.html
new file mode 100644
index 0000000000000000000000000000000000000000..34656d5cf724fb44d7dd164454cdd9d491c76a72
--- /dev/null
+++ b/prior/index.html
@@ -0,0 +1,147 @@
+<html>
+<head>
+</head>
+<body>
+
+<!DOCTYPE html>
+<meta charset="utf-8">
+<style>
+body {
+ font: 14px sans-serif;
+}
+
+text {
+ font: 10px sans-serif;
+}
+.axis path,
+.axis line {
+ fill: none;
+ stroke: #999;
+ shape-rendering: crispEdges;
+}
+.dot {
+ stroke: #000;
+ stroke-width:0px;
+}
+
+</style>
+
+<body>
+
+<script src="d3.v3.min.js"></script>
+
+<h1>Ring Oscillators</h1>
+<p>We started this page to catalog tests of speed for a variety of microprocessors and electronics modules. Here we define speed as how fast information can transit from external electronics into the core where microcode is running and back out again. A good way to test this is by constructing a ring oscillator, which simply sends token back and forth, producing a waveform that can be measured with an oscilloscope.</p>
+
+<h2>GPIO</h2>
+<p>To measure speed across a GPIO layer, we use a logic level as our token. We also enforce that the token must reach the CPU, where code is running, rather than simply be inverted by digital logic or an event system.</p>
+
+<div id='gpio'></div>
+
+<h2>RF</h2>
+<p>To measure speed across a radio link, we use the smallest supported packet.</p>
+<div id='rf'></div>
+
+<h2>WildWest</h2>
+<p>Here we test embedded platforms that stray from the Harvard Architecture ... I.E FPGAs, PSOCs etc, including event systems or digital logic configurable in other microcontrollers (i.e. the XMEGA).</p>
+<div id='wildwest'></div>
+
+<p>This page is part of a public gitlab project available <a href='https://gitlab.cba.mit.edu/pub/ring'>here</a>.</p>
+
+<p>We've also started testing embedded network performance. That documentation is <a href="https://pub.pages.cba.mit.edu/networks/">here</a>.
+
+<script>
+function make_graph(div_id,json_key,axis_labels,use_khz){
+ var margin = {top: 20, right: 20, bottom: 30, left: 40},
+ width = 960 - margin.left - margin.right,
+ height = 600 - margin.top - margin.bottom;
+ var x = d3.scale.linear().range([0, width]);
+ var y = d3.scale.linear().range([height, 0]);
+ //var y = d3.scale.log().range([height, 0]);
+ var color = d3.scale.category10();
+ var xAxis = d3.svg.axis().scale(x).orient("bottom").tickSize(-height,0);
+ var yAxis = d3.svg.axis().scale(y).orient("left").tickSize(-width,0);
+
+ var svg = d3.select(div_id).append("svg")
+ .attr("width", width + margin.left + margin.right)
+ .attr("height", height + margin.top + margin.bottom)
+ .append("g")
+ .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
+
+ d3.json("ring.json", function(error, json) {
+ if (error) throw error;
+ data = json[json_key];
+ console.log(data);
+ update(data);
+ });
+
+ function update(data) {
+ var cols = d3.scale.category10();
+
+ function period_to_freq(p){
+ if (use_khz) return 1000./p;
+ else return 1/p;
+ }
+
+ //for linear
+ x.domain([0,d3.max(data, function(d) { return 1.01*d.dev_board_price; })]).nice();
+ y.domain([0,d3.max(data, function(d) { return 1.01*period_to_freq(d.ring_period); })]).nice();
+ //for log
+ //x.domain(d3.extent(data, function(d) { return 1.1*d.dev_board_price; })).nice();
+ //y.domain(d3.extent(data, function(d) { return 1.1*period_to_freq(d.ring_period); })).nice();
+
+ var node = svg.selectAll("g").data(data).enter().append("g").append("a")
+ .attr("xlink:href", function(d) { return d.subdirectory_path; });
+
+ node.append("circle")
+ .attr("class", "dot")
+ .attr("cx", function(d) { return x(d.dev_board_price); })
+ .attr("cy", function(d) { return y( 1.0*period_to_freq(d.ring_period) ); })
+ .attr("r", 3.5)
+ .style("fill",function(d,i){return cols(i);});
+ node.append("text")
+ .attr("x", function(d) { return x(d.dev_board_price)+5; })
+ .attr("y", function(d) { return y( 1.0*period_to_freq(d.ring_period) ); })
+ .style("font-size","15px")
+ .style("font-family","sans-serif")
+ .text(function(d) { return d.name; });
+
+ svg.insert("g",":first-child")
+ .attr("class", "x axis")
+ .attr("transform", "translate(0," + height + ")")
+ .call(xAxis)
+ .append("text")
+ .attr("class", "label")
+ .attr("x", width)
+ .attr("y", 25)
+ .style("text-anchor", "end")
+ .style("font-size","15px")
+
+ .text(axis_labels[0]);
+
+ svg.insert("g",":first-child")
+ .attr("class", "y axis")
+ .call(yAxis)
+ .append("text")
+ .attr("class", "label")
+ .attr("transform", "rotate(-90)")
+ .attr("y", -25)
+ .attr("dy", ".2em")
+ .style("text-anchor", "end")
+ .style("font-size","15px")
+ .text(axis_labels[1])
+ }
+
+
+}
+
+make_graph("#gpio","gpio",["dev board price ($)", "ring frequency (MHz)"],0)
+make_graph("#rf","rf",["dev board price ($)", "ring frequency (kHz)"],1)
+make_graph("#wildwest","wildwest",["dev board price ($)", "ring frequency (MHz)"],0)
+
+
+</script>
+
+
+</body>
+</html>
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