Curious minds .. etc

Several years ago (OK, maybe 12 years ago) I did an experiment where I 
unpacked a
freebsd 1.1 (or maybe 2.0?) image into a subdirectory, and after 
installing various
compat packagesand options and a.out support and changing MAX_PID to 
be 60000, I was able to
chroot to it and do a "make world". Things were stupidly fast.


Has anyone been able to do such a thing in recent years? One wonders 
what options one
would need and what the oldest Version we could run in this way was..


J