From: "Lee Gleason" <lee.gleason at comcast.net> I'm even more curious what a PDT-11 optimization is doing in an RSX driver...was there at one time an RSX product product planned for the PDT family? I've never met a PDT-11/110 in person. The docs say they were downline-load-only -- so what DID they run? MRRT11? RSX11S would certainly make sense. Also, DEC dumped a lot of the PDTs to their own employees, so maybe someone made a few tweaks to the RSX code for their own evil purposes at home. John Wilson D Bit