After a few days of work, I have successfully restored and booted a
MicroPDP-11/23+. This is the first PDP-11 that I've actually restored, and
one of four that I want to get working this summer. This is also only the
second PDP-11 that I've even *used*.
Here's what the cards look like:
Backplane: H9278-A (3xQ22/CD 5xQ22/Q22)
AAAAAAAAAA BBBBBBBBBB CCCCCCCCCC DDDDDDDDDD
1 M8189----(KDF11-BF)------------------------
2 M8067-LB-(MSV11-P)-------------------------
3 M9047---------------- SPACER-CARD----------
4 M9047---------------- M9047----------------
5 M9047---------------- M9047----------------
6 M9047---------------- M9047----------------
7 M7957----(DZV11-M)-------------------------
8 M8639-YA-(RQDX1)---------------------------
I've got another MSV11-P card that I'll stick in there as soon as I get its
jumpers changed. Per Tony's info, I did not remove any grant jumpers on the
CPU and memory cards; neither card uses the CD bus, so removal is not
necesary. Per Ethan's help, the cards have been reorganized for maximum
expansion ease.
I did have to replace the power supply and the CPU card. Them's the breaks.
It's got RT-11 5.1 and CTS-300 8.1 installed, and it boots. I've got some
playing to do!
Many thanks go out to:
- The people who run documentation websites
- Ethan Dicks and Tony Duell for help
- Jeffrey Worley for the majority of the parts
- Eric Dittman for the BA23 plastic shell
--
Jeffrey Sharp
The email address lists_at_subatomix.com is for mailing list traffic. Please
send off-list mail to roach jay ess ess at wasp subatomix beetle dot com.
You may need to remove some bugs first.
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Received on Fri May 31 2002 - 02:56:46 BST