Third-party components
Nothing here is proprietary. Everything is taken unmodified from upstream unless noted.
| Component | Used for | License | Source |
|---|---|---|---|
v86 (libv86.js, v86.wasm) 0.5.472 |
x86 PC emulator running both DOS machines, NE2000 NIC, DHCP/DNS responder | BSD-2-Clause | https://github.com/copy/v86 |
SeaBIOS and VGABIOS (inside assets.b64.js) |
BIOS of the emulated PCs, as shipped with v86 | LGPL-3.0 / LGPL-2.1+ | https://github.com/copy/v86/tree/master/bios |
| FreeDOS 1.4 Floppy Edition (kernel, FreeCOM) | DOS on the boot floppy (dosmqtt.img inside assets.b64.js) |
GPL-2.0 | https://www.freedos.org/ |
Crynwr NE2000 packet driver 11.4.3 (NE2000.COM) |
DOS driver for the emulated NE2000 card | Crynwr "freely copyable; source must be available" (GPL-style); source: Crynwr packet drivers 11.x | http://www.georgpotthast.de/sioux/packet.htm , https://archive.org/details/PKTD11A_ZIP |
mTCP 2026-10-10 by Michael B. Brutman (DHCP.EXE, TCP/IP library) |
DHCP client (unmodified binary) and the TCP/IP stack linked into A.EXE and B.EXE | GPL-3.0-or-later | http://www.brutman.com/mTCP/ |
| Open Watcom 1.9 | Compiler used to build A.EXE and B.EXE (not distributed) | Sybase Open Watcom Public License | https://openwatcom.org/ |
A.EXE and B.EXE are built from src/a.cpp, src/b.cpp and src/mqtt.h plus the mTCP library sources
(TCPLIB/, TCPINC/ of the mTCP source archive). src/build.sh shows the exact compiler options.
src/make_image.sh assembles the boot floppy and src/build_assets.py packs it into assets.b64.js.
The Gradio demo sends the typed question to a third-party public Gradio Space (default tencent/Hy3) over HTTPS and prints its reply; that service has its own terms and the reply is not our content.
The MQTT brokers (broker.emqx.io, test.mosquitto.org, broker.hivemq.com) are third-party public services.
No credentials are used.