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3fdfd79 Sep 12, 2015
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<!doctype html>
<title>Save and restore</title>
<script src="../build/libv86.js"></script>
<script>
"use strict";
window.onload = function()
{
var emulator = new V86Starter({
memory_size: 32 * 1024 * 1024,
vga_memory_size: 2 * 1024 * 1024,
screen_container: document.getElementById("screen_container"),
bios: {
url: "../bios/seabios.bin",
},
vga_bios: {
url: "../bios/vgabios.bin",
},
cdrom: {
url: "../images/linux.iso",
},
autostart: true,
});
var state;
document.getElementById("save_restore").onclick = function()
{
var button = this;
if(state)
{
button.value = "Save state";
emulator.restore_state(state);
state = undefined;
}
else
{
emulator.save_state(function(error, new_state)
{
if(error)
{
throw error;
}
console.log("Saved state of " + new_state.byteLength + " bytes");
button.value = "Restore state";
state = new_state;
});
}
button.blur();
};
document.getElementById("save_file").onclick = function()
{
emulator.save_state(function(error, new_state)
{
if(error)
{
throw error;
}
var a = document.createElement("a");
a.download = "v86state.bin";
a.href = window.URL.createObjectURL(new Blob([new_state]));
a.dataset.downloadurl = "application/octet-stream:" + a.download + ":" + a.href;
a.click();
});
this.blur();
};
document.getElementById("restore_file").onchange = function()
{
if(this.files.length)
{
var filereader = new FileReader();
emulator.stop();
filereader.onload = function(e)
{
emulator.restore_state(e.target.result);
emulator.run();
};
filereader.readAsArrayBuffer(this.files[0]);
this.value = "";
}
this.blur();
};
};
</script>
<input id="save_restore" type="button" value="Save state">
<input id="save_file" type="button" value="Save state to file">
Restore from file: <input id="restore_file" type="file">
<hr>
<!-- A minimal structure for the ScreenAdapter defined in browser/screen.js -->
<div id="screen_container">
<div style="white-space: pre; font: 14px monospace; line-height: 14px"></div>
<canvas style="display: none"></canvas>
</div>