> >Am Dienstag, 18. September 2018, 16:27:49 MESZ hat Noel Chiappa ><j...@mercury.lcs.mit.edu> Folgendes >geschrieben: > > > > > > > From: Pierre Gebhardt > > > As I don't have core memory modules available, I thought of using MS11 > > memory, which, according to my research, seems to be an option for > > 11/40 systems. > >Err, which kind of MS11? There are lots of different ones: > > http://gunkies.org/wiki/MS11 > >and they don't all work in every UNIBUS PDP-11! > >Your options are the -E/-J group, and the -L, but the latter are a bit hard >to find, and expensive. (There may be non-DEC equivalents, but I don't know >about them.) They all need a MUD backplane such as the DD11-C or DD11-D.
Indeed, these are MS11-LB boards, but I don't know yet, if they work. Got them a long time ago with a bunch of other untested unibus boards. With the BA11-F enclosure actually came a DD11-DK backplane. On Henk's website, I saw that one of his systems also has a DD11-DK backplane mounted in it despite the shorter cable lengths compared to a DD11-DF according to what Paul Anderson wrote. I will have a look at this as soon as I have time and will extend the cables accordingly, if required. Thanks a lot for all the great hints provided so far by the list member :) All the best, Pierre
