This is - surprise! - a clone of the DEC DZV11. Sometimes part numbers are your friends! Webster was an Australian company that made many Q-bus and a few Unibus DEC-compatible options. Here in North America, they were frequently relabeled with the "Aviv", "DSD", "Sigma", "Qualogy", and a few other trademarks. Strangely enough, "Wombat", the Webster MSCP config utility, was never renamed :-). Even if they tried, Webster's chief software designer left some Easter Eggs behind that'll pop up his name from the Wombat menu! -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927