Back in the early 90's, I had a friend with one of these. It was a neat machine. I remember an unusual windowing system on it ("MGR", I think?) We were starting to get into PC unix clones - first Coherent, then Linux (SLS distro?) - around the same time.
MGR was a later one - it could run (slowly) with an unmodified machine but really needed a VIDPAL to be used best. VIDPAL was a replacement PAL which enabled user-mode access to the framebuffer.
