From Chris’s Notes:
This is AmigaOS 3.9 XL, also known as Amithlon, I prefer calling it OS 3.9 XL. What is it? It is the successful attempt from Haage and partner in circa 2000-2001 to port AmigaOS to X86 hardware through emulation via a QNX linux type kernel to run AmigaOS 68k on Intel hardware, and it works VERY GOOD. Thought to be lost to history you can get everything you need from archive.org here https://archive.org/details/amithlon