> We would need to start with a working Bliss-64 (or Bliss-32) compiler.
We would need both.
Good news is that the GEM back end can emit x86 code.
Bad news is nobody has visited that code in a long while, and most of the people who know how it works are no longer with the company.
That’s really the problem here, because the last time I looked at this sort of thing (ie, moving Bliss source to a new platform), a LOT of the details of the internals of Bliss aren’t documented outside DEC, and they probably were not documented inside of DEC much either. They were carried around in a few people’s heads, much like the details of some of their PDP-11 OS’s.