27 Jan
2020
27 Jan
'20
11:29 a.m.
On Sun, Jan 26, 2020 at 2:08 PM Noel Chiappa via cctalk
<cctalk at classiccmp.org> wrote:
So I've decided to try and build up a KE11-A
Extended Arithmetic Element. I
have most of the boards (although I*m missing a M234 Register dual-width
board, if anyone has one).
I have one but no spare parts.
The main thing I'm missing at this point is a
backplane.
If not, if someone does have one, even if you want to hang onto it, I'd really
appreciate good photos of the pin side of the backplane, so I have a more
detailed idea (than just the prints) on how the wiring goes.
It's on my list to start examining and refurbing my PDP-11/20. I will
take pictures when I get things started, but if anyone else has one,
feel free to jump in. It will be some time before I get to mine.
And speaking of the prints, although there are a
scanned set online, they are
pretty low-res, and some parts (e.g. the wire list, which was typical line
printer output) are hard to read as a result. So a new scan would be really,
really appreciated.
I will keep an eye out for my prints as I go through things. I have
_some_ original prints from 1970 (with the characteristic cover page).
I will watch for the KE11A in the stack in the hopes that it's not a
copy of a copy of a copy.
I have wanted to restore mine for a long time - in particular, I want
to run the UNIX v1 kernel that's part of the PUPS collection. About
the only major thing that I will have to emulate is the swap disk. I
have an RK11-D and an RK11-C (if I can get that working). I've been
starting the organization process for all of this but haven't begun
moving hardware yet.
Cheers,
-ethan
Thanks (I hope)!
Noel