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+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]]