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  1. C

    Restoring MC.LCS.MIT.EDU at long last

    Well, after sitting in a dark corner for probably 30 years now I think it's time I started to tackle the restoration of the last of the ITS systems: MC. MC is an interesting one: Way back in the day it had a massive systems failure and was pulled out of service. As a temporary measure...
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    About re-producing PDP-11/70

    Had an RP07. Ok, it is beyond insanely mighty, but once you get it, it needs to run. Otherwise the heads would stick to the platter with the usual hilarity when fired up. That would be an amazing thing to see though.... I've kept my RM80 around mainly so I will have a drive for when I rebuild...
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    Classic PDP-8 Donation at the RICM

    *nod* I printed mine with the trusty Ender 3d pro. Work and look fine. Granted they are black, but I could easily re-print them in a more appropriate set of colors. PETG is tough: I printed some bushings for my Porsche 928S seats. Very heavy loads, 4 years in and works fine.
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    About re-producing PDP-11/70

    I believe the 11/70 could handle the mighty RM80.
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    MM8-AB documentation question.

    Have you tried setting the second board to 0000 base address to see if it works? That could triangulate the problem to your memory board or a flip flop in the main system.
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    Classic PDP-8 Donation at the RICM

    FYI: I have printed pdp8/L switches using PETG at 220-230c temps and they not only work just fine, but look good and the pivots have held up for 2+ years as the DEP and EXAM switches. So there is that. PLA will not work at all, PETG is a different animal.
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    DEC units on ebay

    Oh they're also doing repeater watches? Oh well, that's it for Ebay for me.
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    DEC units on ebay

    Eh, either Ebay will be left holding the bag or (more likely) Ebay will come up with procedures so onerous that a refund will be impossible to get. Ebay profits, the scammers profit, the users lose but hey, what else are the users going to do? The finest line of poetry ever uttered in the...
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    DEC units on ebay

    Wow, haven't seen fraud at this scale in awhile. Thanks for the warning in general!
  10. C

    NEXT computers hook up and after boot help

    Indeed. I could not understand that: I wound up writing and compiling enough POSIX bits to allow NeXTStep to continue to compile sendmail and BIND (it was my mail server) but the lack of official support was just plain annoying.
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    NEXT computers hook up and after boot help

    Cloth and gentle cleaner. Please don't try to mix and match cables till you have figured out what is what (I'm not sure how one can plug the color NeXT into a B/W monitor). Buy a few batteries and get the good systems working first, then start branching out.
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    NEXT computers hook up and after boot help

    The Next printer is basically a Canon engine fed from the NeXT which does all the rendering. Pretty simple. The 030,040 B/W cubes and the B/W Nextstations used a cable that connected from the system to the NeXT monitor which had two ports for the mouse and keyboard. These were non-ADB. for the...
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    NEXT computers hook up and after boot help

    Right off the bat I would say simplify your testing as much as possible. You have two systems "that you can get into", let's focus on this first. 1) What are they 2) What have you cabled up 3) What do they do? Pics could help as well. First goal is to get the system running, then see what you...
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    DEC Paper Tape Punch/Reader Pricing

    Wow, I really screwed up my math somehow. My error. Ah I'll bet I calced it at 50 chars per minute, not second. Or maybe I was thinking an RM80....
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    How picky is NT 4.0 with CPUs?

    I'd have to look in my old Lotus Notes/CC:Mail stuff but I think we got NT 4.0 prerelease running on a 386/33. At some point everyone said "Nope, gotta have Intel's 486 cache commands" and it all went down.
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    DEC Paper Tape Punch/Reader Pricing

    RK drive is actually useful, aside from making amazing sounds it will boot an OS and run it well. High speed paper tape makes a nice woosh woosh sound as it runs the tape from one side and folds it up on the other. But really it does get old quickly and are you really going to copy your RK05...
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    Setting up a DECnet network with a Pro380 and Windows client?

    Nicely done. Good move to just replace all the chips, if one goes bad the rest are probably on the way. So have you got DECNET up and running again?
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    DEC Paper Tape Punch/Reader Pricing

    It's a bargain given that a VHS tape for "Beauty and the Beast" goes for $25,000.... Seriously, I had one. No way it's worth that much. When you have loaded OS8 onto an RK08.RK03 from a box of paper tapes you realize just how pointless it can be.
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    RL02 use and restoration - Hive knowledge request please!

    My blocked filters were black with crud. Easy to spot. I would bet that they would sound different, as instead of airflow in the tub you would have the blades stalling on a partial vacuum.
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    Compaq Portable III What’s this?

    Tape drive! More to the point you could snap on a module like that which contained an ISA bus slot for an extra device. My guess is there is an ISA tape controller in there and of course the drive. Display is probably a loose/broken wire in the ribbon cable.
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