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  1. Close. Don Nelson of CDC COBOL who was pretty...

    Close. Don Nelson of CDC COBOL who was pretty much a fixture at CODASYL gatherings played the bass drum in the LTHMB--the one with the fixture for a beer stein.
  2. If it's the bezel being out of whack, that's not...

    If it's the bezel being out of whack, that's not so hard to fix--just unscrew the retaining clip, straighten it, and then re-install.

    At least that's what I see from your photos (my eyes aren't...
  3. It's worthwhile mentioning that the third-party...

    It's worthwhile mentioning that the third-party terminal vendors got in on the action too. We used C. Itoh terminals with our VAX--cheaper, and in some respects, better. Televideo and Wyse made a...
  4. If you're looking for a quote on repairs, you...

    If you're looking for a quote on repairs, you might give these guys a call. They will be expensive, if they'll even give a quote. If you're dealing with physically broken components (e.g. bezels,...
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    That's too bad--I stated what I did because too...

    That's too bad--I stated what I did because too often, some enterprising person will diagnose an "alignment error" and attempt to remedy it--when the situation was only that the sensor was dirty. I...
  6. Cue the Los Trancos Woods Marching Band. (Who...

    Cue the Los Trancos Woods Marching Band.

    (Who can tell me what this refers to--and why it's relevant to COBOL?)
  7. Seconded on that.

    Seconded on that.
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    Unless you've taken the drive apart, the...

    Unless you've taken the drive apart, the likelihood is that there was nothing wrong with your drive's alignment in the first place. I trust that you marked the original position of the Track 0...
  9. Later, the switches became more of a notion when...

    Later, the switches became more of a notion when multi-user/programming got to be a thing.

    For example, on a CDC 6600 running the SCOPE or NOS operating system (can't remember what the Chippewa OS...
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    Yup, I can state definitively that it's TeleDisk....

    Yup, I can state definitively that it's TeleDisk. Dave Dunfield also wrote a utility to convert to IMD.
  11. Find the datasheets and check. I used them on a...

    Find the datasheets and check. I used them on a MCT 80386 CPU board with no issues.
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    DEC used its own drive electronics for the RX02...

    DEC used its own drive electronics for the RX02 drive (M7745 R/W board). Again, not an uncommon practice with peripherals in general. Witness the number of systems that used CDC/MPI hard disk...
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    Probably the mech is Calcomp (I know of no other...

    Probably the mech is Calcomp (I know of no other drive make that looks like that), but with Digital's electronics. Not uncommon back in the day--even Apple and Commodore did it.
  14. Sense switches go way back into the mainframe...

    Sense switches go way back into the mainframe day. "2 up and go" was a familiar instruction in the old days.
    ...
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    I recall that the 140 has an "interesting" 40 pin...

    I recall that the 140 has an "interesting" 40 pin connector wherein the DC (5 and 24 volt) are fed in. In my case, not using a keyed connector led to some "interesting" events. Not a standard...
  16. Note that NJ is looking for volunteers; so unlike...

    Note that NJ is looking for volunteers; so unlike the run-up to Y2K.

    Good luck with that. They might as well be looking for experts with COMTRAN experience.
  17. Mine are Hyundai HY51C1000LS-10 devices, which...

    Mine are Hyundai HY51C1000LS-10 devices, which I'm assuming are low-power CMOS 100 nsec. chips.
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    Those look like Calcomp 140 drives.

    Those look like Calcomp 140 drives.
  19. I'd have to look at them and check the datasheet.

    I'd have to look at them and check the datasheet.
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    Personally, I'd go for the glitchworks version...

    Personally, I'd go for the glitchworks version with the coin-cell holder. That should handle the problem forever.
  21. I saw the thread title and thought that you were...

    I saw the thread title and thought that you were looking for new 1103 DRAMs. My thought was "that's going to be expensive, even if he finds any". (Yes, they're 18 pin) :)

    I've got some Hyundai...
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    What the traditional tool used is a degaussing...

    What the traditional tool used is a degaussing coil:

    https://i.ebayimg.com/images/g/TDwAAOSw5gVehnzY/s-l1600.jpg
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    Reminds of the trick with a compass and a room...

    Reminds of the trick with a compass and a room full of metal office furniture. Have someone move one of the pieces and it's possible to tell which one.

    In your case, a degaussing coil should...
  24. Just image-google "Wood PC Case". There are...

    Just image-google "Wood PC Case". There are some remarkable examples.

    I'd prefer any of those to the plexiglass-and-blue-LED contraptions.
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    Got a digicam? Most will register the output of...

    Got a digicam? Most will register the output of an IR LED. Try it yourself with a TV remote control.
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