From: CSBVAX::CSBVAX::MRGATE::"SMTP::CRVAX.SRI.COM::RELAY-INFO-VAX" 18-MAR-1989 01:21 To: MRGATE::"ARISIA::EVERHART" Subj: RE: Unibus address changes on 5.0?? Received: From KL.SRI.COM by CRVAX.SRI.COM with TCP; Fri, 10 MAR 89 21:57:18 PDT Received: from icdc.llnl.gov by KL.SRI.COM with TCP; Fri, 10 Mar 89 21:33:58 PST Date: Fri, 10 Mar 89 21:34 PST From: "Kevin Oberman, LLNL, (415)422-6955" Subject: RE: Unibus address changes on 5.0?? To: INFO-VAX@KL.SRI.COM X-VMS-To: IN::KL.SRI.COM::INFO-VAX >One of our systems engineers is claiming that VMS 5.0 requires address >changes on the unibus. Specifically we are using the Ungermann-Bass DMF32 >and the DH-11 (the later for DDN). Any info would be appreciated. Bad documentation strikes again! The situation is that the AUTOCONFIGURE operation detacts that the devices are at the "old" addresses. The system treats this correctly and everything works. So, as specified in the release notes, you re-address the involved devices. You reboot. You get the warning message again! The answer is in the release notes. There is a SYSGEN parameter (I don't remember just which one, and the release notes are at the office) that controls the behavior. If set to a 0, it uses the old addressing scheme. If set to 1, it checks the hardware and guesses if the old or new system should be used. BUT, it send out the warning message REGARDLESS. The only way to eliminate the message is to change the SYSGEN parameter to 2. The idea is that the default (1) will usually work OK, and will warn the manager of the potential problem. If you don't want to change or the system guessed wrong and things don't work, set the value to 0 and everything is as in V4. Once you've re-addressed things, you change the parameter to 2 and the new scheme will be used exclusively. No warnings, but if things are not re-addressed, they won't work! The "old" system will be supported for a limited time only, so when it's convenient, change the addresses and the SYSGEN parameter. I'm not sure if the old system is still supported in V5.1. This is all from memory of several months ago, so check the release notes before you screw things up on my say-so. R. Kevin Oberman Lawrence Livermore National Laboratory Internet: oberman@icdc.llnl.gov (415) 422-6955 Disclaimer: Don't take this too seriously. I just like to improve my typing and probably don't really know anything useful about anything.