From 01d3285e6ae32899b8a0314a49bda96bf4e4824d Mon Sep 17 00:00:00 2001 From: Bdale Garbee Date: Thu, 9 Dec 2004 00:01:00 -0700 Subject: [PATCH] post --- .../blog/posts/Another_Year_Another_Post.mdwn | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 bdale/blog/posts/Another_Year_Another_Post.mdwn diff --git a/bdale/blog/posts/Another_Year_Another_Post.mdwn b/bdale/blog/posts/Another_Year_Another_Post.mdwn new file mode 100644 index 0000000..0a5bd76 --- /dev/null +++ b/bdale/blog/posts/Another_Year_Another_Post.mdwn @@ -0,0 +1,25 @@ +Occasionally, the list of things I really should be working on gets a little +overwhelming. Late last night was one of those times. So, I spent a couple +hours playing with the pile of PDP-11 parts... + +Took the BA-11N apart far enough to extract the backplane, and added the wires +necessary to support 22-bit addressing. Put everything back together, and had +a bit of a scare since I couldn't seem to get the console talking to me +again. Found a problem in my serial cabling, after which all was well. + +Dug the DELQA out of the stack, stuck it in the chassis below the KDJ11-D/S, +and confirmed that the Decserver 550 firmware still in the CPU board was able +to discover it. + +Extracted the CQD-223/TM SCSI board from the s-box front panel it came in, +and realized it's not going to fit into the slot spacing of the BA11-N as-is. +The problem is that the 50-pin header for the drive cable is straight, so by +the time you put a cable on it the stack is too thick for a backplane +slot. So, either I +need to scare up a Qbus continuity card or something to let me +skip a slot and give the card double height, or alternatively I can replace +the 50-pin header with a right-angle box header and the card should fit... + +At that point, I decided I'd made enough progress, and called it a night. + +[[!tag tags/retro]] -- 2.30.2