The First Unix Port (1998) [pdf]
bitsavers.informatik.uni-stuttgart.de
bitsavers.informatik.uni-stuttgart.de
IIRC, the most interesting part of the presentation was a slide titled "Is UNIX portable?" Miller said, of course it is, I ported it! But then he showed a chart with the number of lines of code in the distribution and the number he had to replace for the Interdata mini, and the proportion was quite large! His punch line was that yes, he had ported UNIX, but it wasn't quite so clear that you could call it portable.
The result was a Unix that ran VAX native in a VM, each copy ran in a single VMS process ... Then I did V7, much easier the second time around
The end of the link says "We here at Bell Laboratories were truly dumfounded when this visitor from an unknown school in Australia reported his elegant procedure and remarkable success. Our own people took considerably longer to move UNIX to an Interdata machine, not because they were not as clever but because they had a different objective: a portable Unix rather than a UNIX port. But I think they'd . have blinked before undertaking the heroic effort that Richard Miller did and he did not even have a Unix computer to port from. "
I cannot see that as any sort of dispute.