18 Sep
2018
18 Sep
'18
1:59 p.m.
Am Dienstag, 18. September 2018, 16:27:49 MESZ hat Noel Chiappa <jnc at
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