> On Mar 9, 2017, at 12:27 PM, Timothe Litt <l...@ieee.org> wrote: > > .. > With respect to an earlier question about CI emulation: The best approach > may be to emulate it as multicast ethernet. Setup a couple of groups for > each star coupler. Each coupler supports up to 32 nodes. For VMS, half o > them hosts, half storage. CI is a 50Mb/s (might be 70, but I remember 50 > from the initial doc) CSMA/CD bus.
70 Mb/s is the number I always saw. > The cabling is redundant (A & B cables), so assign one MC group to each per > star. (Yes, there are DECnet drivers for on multiple OSs. I think it was > considered a multipoint medium with addresses related to (CI) node numbers > rather than an ethernet (broadcast) - but it's been a while.) I don't think DECnet ever supported CI. It certainly doesn't show up in the DECnet architecture specs anywhere. paul _______________________________________________ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh