On Wed, 28 Apr 2021 at 12:01, Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org> wrote:

Are you sure that 4.3BSD Quasijarus supports running on a 4000VLC, or
utilizing SCSI devices? Last time I looked it didn't support anything
newer than the pure QBus MicroVAXen and VAXstations, and the only SCSI
devices supported were those on MSCP-to-SCSI controllers.

Indeed, on Quasijarus the GENERIC config file only supports (see https://github.com/abs0/4.3BSD-Quasijarus/blob/main/sys/conf/GENERIC.vax):
cpu             "VAX8600"
cpu             "VAX8200"
cpu             "VAX780"
cpu             "VAX750"
cpu             "VAX730"
cpu             "VAX630"
cpu             "VAX650"

I think the only Unix to ever support the VLC was NetBSD, or maybe some versions of OpenBSD did too?