DEC PDT-11/150 – Part 3. Healing hands.

I was preparing to share with you all my efforts driving the ODT with PDP11GUI.

I have been using it to assemble Marco-11 assembler code and squirt it across to the PDT’s ODT. The problem is that when I came to fire up the machine to do a bit more and maybe take some screenshots I can’t get to the ODT because the machine is now asking for a boot floppy!

So that’s how you get it to try and boot. You write about it on your website and shame it into trying. I am part delighted and part deeply suspicious. Computers don’t heal by themselves.

I kind of miss the ODT to be honest. At least with that I could make some progress and fire octal code at it.

So what happens now?

Not much. It doesn’t seem to touch the disk drives when I answer its question. It just tells me there is “No boot on volume” and asks me again. It doesn’t even seem to rattle the disk.

The funny thing is, when it only went to the ODT, it seemed to get the drives to seek to track zero and it’s stopped doing that now. Curious.

 

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