Postscipt laser connection to *uport or Xenix

[debula]

I need to ask what may well seem to be a brain-dead question, but here goes
anyway:  If I want to share a Postscript laser printer (with Appletalk
connector) between some MACs & PC's (one of which will be running *uport
or Xenix).  Any suggestions?  Has anyone ever used TOPS or LocalTalk as
a UNIX task under MERGE or VP/ix?  I know this is a somewhat off the wall
question, but I am very interested in finding out the answer (or if this
is a big "no can do").  Thanks for any help.