Examples
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127
docs/samples/lua.html
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127
docs/samples/lua.html
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<!doctype html>
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<title>Lua interpreter</title>
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<script src="../../build/libv86.js"></script>
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<script>
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"use strict";
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window.onload = function()
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{
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var emulator = new V86Starter({
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memory_size: 32 * 1024 * 1024,
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vga_memory_size: 2 * 1024 * 1024,
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// Uncomment to see what's going on
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//screen_container: document.getElementById("screen_container"),
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bios: {
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url: "../../bios/seabios.bin",
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},
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vga_bios: {
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url: "../../bios/vgabios.bin",
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},
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cdrom: {
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url: "../../images/linux.iso",
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},
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autostart: true,
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disable_keyboard: true,
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});
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var data = "";
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emulator.add_listener("serial0-output-char", function(char)
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{
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if(char !== "\r")
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{
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data += char;
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}
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if(data.endsWith("login: "))
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{
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console.log("Do login");
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emulator.serial0_send("root\n");
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}
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else if(data.endsWith("/root% "))
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{
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console.log("Now ready");
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document.getElementById("status").textContent = "Ready.\n";
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document.getElementById("run").disabled = false;
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}
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});
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emulator.add_listener("serial0-output-line", function(line)
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{
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// filter noise
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if(!line.startsWith("/root% lua -e") &&
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!line.startsWith("> ") &&
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line.indexOf("Welcome to Buildroot") === -1 &&
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line.indexOf("login:") === -1 &&
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line.trim() !== "")
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{
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document.getElementById("result").textContent += line;
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}
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});
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document.getElementById("source").onkeydown = function(e)
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{
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if(e.which == 13 && e.ctrlKey)
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{
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document.getElementById("run").onclick();
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}
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};
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document.getElementById("run").onclick = function()
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{
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var code = document.getElementById("source").value;
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emulator.serial0_send("lua -e " + bashEscape(code) + "\n");
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document.getElementById("result").textContent = "";
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document.getElementById("status").textContent = "Running ...\n";
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this.disabled = true;
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};
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};
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// https://gist.github.com/creationix/2502704
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// Implement bash string escaping.
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function bashEscape(arg)
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{
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return "'" + arg.replace(/'+/g, function (val) {
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return "'" + val.replace(/'/g, "\\'") + "'";
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}) + "'";
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}
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</script>
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<textarea id=source rows=20 cols=80>
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k = 1
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x = 0
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while k < 1000 do
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x = x + 1 / (k * k)
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k = k + 2
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end
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print(math.sqrt(x*8))
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function factorial(n)
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if n == 0 then
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return 1
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else
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return n * factorial(n - 1)
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end
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end
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print("factorial(10):", factorial(10))
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</textarea>
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<button disabled id=run>run (ctrl-enter)</button>
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<br>
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<hr>
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<pre id=status>Wait for boot ...</pre>
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<pre id=result></pre>
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<hr>
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<div id="screen_container">
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<div style="white-space: pre; font: 14px monospace; line-height: 14px"></div>
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<canvas style="display: none"></canvas>
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</div>
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107
docs/samples/save_restore.html
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107
docs/samples/save_restore.html
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<!doctype html>
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<title>Save and restore</title>
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<script src="../../build/libv86.js"></script>
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<script>
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"use strict";
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window.onload = function()
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{
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var emulator = new V86Starter({
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memory_size: 32 * 1024 * 1024,
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vga_memory_size: 2 * 1024 * 1024,
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screen_container: document.getElementById("screen_container"),
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bios: {
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url: "../../bios/seabios.bin",
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},
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vga_bios: {
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url: "../../bios/vgabios.bin",
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},
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cdrom: {
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url: "../../images/linux.iso",
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},
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autostart: true,
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});
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var state;
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document.getElementById("save_restore").onclick = function()
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{
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var button = this;
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if(state)
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{
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button.value = "Save state";
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emulator.restore_state(state);
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state = undefined;
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}
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else
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{
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emulator.save_state(function(error, new_state)
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{
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if(error)
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{
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throw error;
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}
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button.value = "Restore state";
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state = new_state;
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});
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}
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button.blur();
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};
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document.getElementById("save_file").onclick = function()
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{
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emulator.save_state(function(error, new_state)
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{
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if(error)
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{
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throw error;
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}
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var a = document.createElement("a");
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a.download = "v86-state.bin";
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a.href = window.URL.createObjectURL(new Blob([new_state]));
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a.dataset.downloadurl = "application/octet-stream:" + a.download + ":" + a.href;
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a.click();
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});
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this.blur();
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};
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document.getElementById("restore_file").onchange = function()
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{
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if(this.files.length)
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{
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var filereader = new FileReader();
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emulator.stop();
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filereader.onload = function(e)
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{
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emulator.restore_state(e.target.result);
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emulator.run();
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};
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filereader.readAsArrayBuffer(this.files[0]);
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this.value = "";
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}
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this.blur();
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};
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};
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</script>
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<input id="save_restore" type="button" value="Save state">
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<input id="save_file" type="button" value="Save state to file">
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Restore from file: <input id="restore_file" type="file">
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<hr>
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<!-- A minimal structure for the ScreenAdapter defined in browser/screen.js -->
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<div id="screen_container">
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<div style="white-space: pre; font: 14px monospace; line-height: 14px"></div>
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<canvas style="display: none"></canvas>
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</div>
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85
docs/samples/serial.html
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85
docs/samples/serial.html
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<!doctype html>
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<title>Serial example</title>
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<script src="../../build/libv86.js"></script>
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<script>
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"use strict";
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window.onload = function()
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{
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var emulator = new V86Starter({
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// Uncomment to see what's going on
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//screen_container: document.getElementById("screen_container"),
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bios: {
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url: "../../bios/seabios.bin",
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},
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vga_bios: {
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url: "../../bios/vgabios.bin",
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},
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cdrom: {
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url: "../../images/linux.iso",
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},
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autostart: true,
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disable_keyboard: true,
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});
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// In this example we wait for output from the serial terminal, which
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// should be running busybox. We log in as soon as a prompt appears and then
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// retrieve a directory listing of the root directory
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var data = "";
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var stages = [
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{
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test: "login:",
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send: "root\n",
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},
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{
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test: "/root% ",
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send: "ls -1 --color=never /\n",
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},
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{
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test: "/root% ",
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send: "lua -e 'print(3+4)'\n",
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},
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];
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var stage = 0;
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emulator.add_listener("serial0-output-char", function(char)
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{
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if(char === "\r")
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{
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return;
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}
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data += char;
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document.getElementById("terminal").value += char;
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var current = stages[stage];
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if(!current)
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{
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return;
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}
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if(data.endsWith(current.test))
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{
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stage++;
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emulator.serial0_send(current.send);
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var log = "Sending: " + current.send.replace(/\n/g, "\\n") + "\n";
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document.getElementById("log").value += log;
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}
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});
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};
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</script>
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<textarea readonly rows=25 cols=60 id="log">Waiting for boot ...
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</textarea>
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<textarea readonly rows=25 cols=60 id="terminal"></textarea>
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<div id="screen_container">
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<div style="white-space: pre; font: 14px monospace; line-height: 14px"></div>
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<canvas style="display: none"></canvas>
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</div>
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78
docs/samples/two_instances.html
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78
docs/samples/two_instances.html
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<!doctype html>
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<title>Two emulators</title>
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<script src="../../build/libv86.js"></script>
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<script>
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"use strict";
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window.onload = function()
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{
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var container1 = document.getElementById("screen_container1");
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var container2 = document.getElementById("screen_container2");
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var emulator1 = new V86Starter({
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screen_container: container1,
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bios: {
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url: "../../bios/seabios.bin",
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},
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vga_bios: {
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url: "../../bios/vgabios.bin",
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},
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cdrom: {
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url: "../../images/linux.iso",
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},
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autostart: true,
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});
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var emulator2 = new V86Starter({
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screen_container: container2,
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bios: {
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url: "../../bios/seabios.bin",
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},
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vga_bios: {
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url: "../../bios/vgabios.bin",
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},
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cdrom: {
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url: "../../images/linux.iso",
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},
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autostart: true,
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});
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emulator2.keyboard_set_status(false);
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container1.addEventListener("mousedown", function(e)
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{
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container1.style.borderColor = "yellow";
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container2.style.borderColor = "black";
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emulator1.keyboard_set_status(true);
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emulator2.keyboard_set_status(false);
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}, false);
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container2.addEventListener("mousedown", function(e)
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{
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container1.style.borderColor = "black";
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container2.style.borderColor = "yellow";
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emulator1.keyboard_set_status(false);
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emulator2.keyboard_set_status(true);
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}, false);
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emulator1.add_listener("serial0-output-char", function(char)
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{
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emulator2.serial0_send(char);
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});
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};
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</script>
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Click on a screen to control it.<hr>
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<div id="screen_container1" style="float: left; margin: 10px; border: 3px solid yellow;">
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<div style="white-space: pre; font: 14px monospace; line-height: 14px"></div>
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<canvas style="display: none"></canvas>
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</div>
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<div id="screen_container2" style="float: left; margin: 10px; border: 3px solid black;">
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<div style="white-space: pre; font: 14px monospace; line-height: 14px"></div>
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<canvas style="display: none"></canvas>
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</div>
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