Article View: comp.sys.dec
Article #1739DMAC support for Unibus in VAX 6000 series?
From: scheun
Date: Wed, 18 Jul 1990 15:50
Date: Wed, 18 Jul 1990 15:50
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1294 bytes
I don't know exactly if this is the right newsgroup to direct my question. We have apoor, old, overloaded VAX 11/785 which we would like to replace by a shining new VAX from the 6000 series. There is however one problem. We have a connection to LCN (Loosely Coupled Network, a CDC network) through a DMAC interface. CDC does noet have a BI interface to replace the DMAC. A solution would be to attach a Unibus to the BI bus and use this for the DMAC. Now I have heard rumours that CDC does not support this configuration. Up till now I have not been able to get a denial nor confirmation from our local CDC contact. I have two questions: 1 What are the experiences with a Unibus connected to a BI bus in a VAX 6000 series computer? 2 Does anyone know of a situation where a DMAC interface is used as described above? Willem van der Scheun SARA (Academic Computing Services Amsterdam) Amsterdam
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arc1-ca.pugleaf.net!utzoo!attcan!uunet!jarthur!usc!ucsd!ucbvax!bloom-beacon!eru!luth!sunic!mcsun!hp4nl!vax1.sara.nl!scheunShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!jarthur!usc!ucsd!ucbvax!bloom-beacon!eru!luth!sunic!mcsun!hp4nl!vax1.sara.nl!scheun From: scheun@vax1.sara.nl Newsgroups: comp.sys.dec Subject: DMAC support for Unibus in VAX 6000 series? Message-ID: <1990Jul18.165010.2382@vax1.sara.nl> Date: 18 Jul 90 15:50:07 GMT Organization: SARA, Academic Computing Services Amsterdam (NL) Lines: 20