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v86
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<!doctype html>
<title>Basic Emulator</title><!-- not BASIC! -->

<script src="../build/libv86.js"></script>
<script>
"use strict";

window.onload = function()
{
    var start = Date.now();

    setInterval(function()
    {
        document.getElementById("time").textContent = Math.round((Date.now() - start) / 1000);
    }, 999);

    var emulator = new V86({
        wasm_path: "../build/v86.wasm",
        memory_size: 512 * 1024 * 1024,
        vga_memory_size: 8 * 1024 * 1024,
        screen_container: document.getElementById("screen_container"),
        bios: {
            url: "../bios/seabios.bin",
        },
        vga_bios: {
            url: "../bios/vgabios.bin",
        },
        initial_state: {
            url: "../images/arch_state-v2.bin.zst",
        },
        filesystem: {
            baseurl: "../images/arch/",
        },
        autostart: true,
    });

    document.getElementById("status").textContent += ".";

    emulator.add_listener("emulator-ready", async function()
    {
        document.getElementById("status").textContent += ".";

        var code = "console.log(3 * 7);\n";
        var buffer = new Uint8Array(code.length);

        buffer.set(code.split("").map(function(chr) { return chr.charCodeAt(0); }));

        await emulator.create_file("/root/code.js", buffer);
        emulator.serial0_send("node /root/code.js > /root/out.txt 2> /root/out.txt\n");
    });

    var serial_out = "";
    emulator.add_listener("serial0-output-byte", async function(byte)
    {
        var chr = String.fromCharCode(byte);
        serial_out += chr;

        if(serial_out.endsWith("root@nyu"))
        {
            const data = await emulator.read_file("/root/out.txt");
            document.getElementById("output").textContent += String.fromCharCode.apply(this, data);
        }
    });
}
</script>

<pre><span id=time></span> <span id=status></span></pre>

<!-- 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>

<hr>

<pre id=output></pre>