NT Virtual DOS Machine. Not the real one, but this one runs on 64-bit Windows (x64 and ARM64). It also runs on Linux (32 and 64 bit) and MacOS.

Ted Fried's MicroCore Labs Projects which include microsequencer-based FPGA cores and emulators for the 8088, 8086, 8051, 6502, 68000, Z80, Risc-V, and also Typewriter and EPROM Emulator projects.

It also appears to be lost to history or, at least, the Internet's recollection of it. Joy says he wasn't able to find a manual for it – or any real information at all – via Google. Despite that, he ...