v7/x86: the last true UNIX, ported to x86

V7/x86 is a port of the Seventh Edition of the UNIX operating system to the x86 (i386) based PC. UNIX V7 was the last general distribution (around 1979) to come from the Research group at Bell Labs, the original home of UNIX. The port was done mostly around 1999 when Ancient UNIX" source code licenses first became available, and was revised for release, with some enhancements, during 2006-7.

The distribution includes the full UNIX Version 7 operating system, with source code, pre-built binaries, man pages, and original Version 7 documentation. Also included are a custom UNIX-style x86 assembler, an ACK-based C compiler, and several key early UCB software components such as the C shell, the editors ex and vi, and the pager more.

I'm inclined to try and run this virtually, to see just how bastardised and messy UNIX has become in our current UNIX derivatives.