Windows XP 2002 for the Itanium: Unbridled rage
A QEMU fork now emulates the original Itanium (Merced) well enough to run Windows XP and Server 2003. The author details building an Itanium cross-compiler on macOS, compiling the firmware, and installing XP after several attempts. The same setup also runs early Windows Server builds, though other OSes like HP-UX remain unsupported.
Don’t you love broken binary compatibility? This is why 80386 is just as relevant in 2026 as it was in 1987.