Varisystems, Compugraphic

The gentlemen who sold me the classic PDP-8 recently told me that he had worked in the early 70's at an outfit called Varisystems. They made dedicated typesetting systems, one of which he had installed to replace the PDP-8. He showed me a few bits and pieces that he had saved, including a wire-wrapped TTL CPU, a core stack, and a removable (technician-only) diagnostic panel. From the panel, I concluded that it was most likely a single accumulator machine. Has anyone else seen one of these machines or know any more about them? There was also an auction on eBay recently of some spare parts for a Compugraphics typesetter that indicated that it too was based on a proprietary CPU. The machine in question was from the late 60's. I had never heard of them until the 80's, when they were building systems around the PERQ (!!) and funding some development work at CMU. --Bill