I spoke with David Schmidt (of symbolics-dks.com) on the phone recently.
Sadly, there is no way to legally emulate a Symbolics machine on a PC. Symbolics' intellectual property is basically in purgatory, the people who own it or have owned it apparently vastly overestimated the value of the IP and refuse to do anything with the IP aside from exchanging it for large sums of money - which nobody is willing to do.
There is a copy of a more recent version of Genera floating around on torrent sites, but from what David Schmidt tells me, it's pretty incomplete.
Sadly, there is no way to legally emulate a Symbolics machine on a PC. Symbolics' intellectual property is basically in purgatory, the people who own it or have owned it apparently vastly overestimated the value of the IP and refuse to do anything with the IP aside from exchanging it for large sums of money - which nobody is willing to do.
There is a copy of a more recent version of Genera floating around on torrent sites, but from what David Schmidt tells me, it's pretty incomplete.