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    My Altair 8800 didn't come with a serial number...

    My Altair 8800 didn't come with a serial number badge. (It's a Rev0). Were the numbered ones only for the factory-assembled jobs?
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    Better to just clean the board well. Solder...

    Better to just clean the board well. Solder doesn't stick to oxidized/corroded copper.

    Plumber's flux is mostly ammonium chloride which, when heated tends to get everywhere you don't want it...
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    Yup. Look for my earlier postings about testing...

    Yup. Look for my earlier postings about testing various ones. Some are better than others, obviously. ;)
  4. Thread: Disks

    by Chuck(G)
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    Wash the cookie with a mild detergent and discard...

    Wash the cookie with a mild detergent and discard the cover (it's contaminated and you're not likely to be able to clean it). Place in a fresh cover. You may also want to "bake" the cookie at about...
  5. About the closest I can find online is this DRI...

    About the closest I can find online is this DRI tutorial. The same BASIC (with changes) was deployed on the Atari ST.
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    Which accounts for your readings. Depending on...

    Which accounts for your readings. Depending on your preferences, I'd probably not bother to fix anything that's still working. For the larger values (>10 F), you can also use electrolytic caps,...
  7. 32bit Win7 plays well with dual-boot. I'm...

    32bit Win7 plays well with dual-boot. I'm running a triple-boot P4 system with Ubuntu 32-bit, Win7 32-bit and Win98SE. No issues--just be sure to install Linux after Win7, so Win7 doesn't...
  8. Thread: Se440bx2

    by Chuck(G)
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    Usually you can use slot 1 CPUs up to about 1GHz...

    Usually you can use slot 1 CPUs up to about 1GHz on 440BX boards. It's a good chipset with very decent ISA support; something that cannot be said of later chipsets. Slockets can extend the range....
  9. The 16s was also used as an adjunct to certain...

    The 16s was also used as an adjunct to certain Japanese PLCs. I've got some documentation (somewhere) that mentions that the floppy format used with a certain PLC is compatible with the 16s.
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    Wasn't the Prairietek 120 a bit different from...

    Wasn't the Prairietek 120 a bit different from bog-standard XTA/ATA?

    I also recall that some of the CDC 5.25" Wren models had an ATA interface.
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    Yup, industrial pneumatics are usually static...

    Yup, industrial pneumatics are usually static affairs. But fluidics was very hot back in the 60s--and has been quietly applied to quite a number of applications, including control of large ship...
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    Well, the last thing I want to do is kill your...

    Well, the last thing I want to do is kill your Lisa. :)
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    I may still have one of my old Monsanto LEDs. ...

    I may still have one of my old Monsanto LEDs. It's not very bright, IIRC.
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    No, because IDE doesn't cover the specific...

    No, because IDE doesn't cover the specific aspects of the interface. Just that simple.
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    Gripe all you like, but "PATA" is quite...

    Gripe all you like, but "PATA" is quite descriptive. A interface based on the PC AT hard disk controller that employs a parallel connection. SATA is similarly named, but employs a serial...
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    Constants used in the 8087 NDP

    http://www.righto.com/2020/05/extracting-rom-constants-from-8087-math.html

    Ken Shirriff has decapped an 8087 NDP and extracted some interesting constants.
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    No, it's called "XTA". You can always use a...

    No, it's called "XTA".

    You can always use a SATA-PATA converter.
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    You might want to look into industrial control...

    You might want to look into industrial control instrumentation for pneumatics. The standard there was generally 3-15 psi (i.e. all positive pressure). Lots of 1/4" plated copper tubing. Some...
  19. Thread: Disks

    by Chuck(G)
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    Nope, that's all audio tape; different reels and...

    Nope, that's all audio tape; different reels and media characteristics.

    All the 1/2" open-reel computer tape you'll find today is old(er).

    Bottom line is that there's no significant demand...
  20. Thread: Disks

    by Chuck(G)
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    You know of someone still manufacturing 1/2"...

    You know of someone still manufacturing 1/2" 2400' open-reel computer tape? Care to divulge that information? I suspect that several people would be most appreciative, yours truly being one of...
  21. Once we get to the other side of this pandemic...

    Once we get to the other side of this pandemic and have a chance to look around, I fear that a lot of things that we've considered as part of our environment will be missing. With Paul Allen gone, I...
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    Recall, also that industry has used both...

    Recall, also that industry has used both pneumatic and hydraulic methods for computation. They have the advantage of ruggedness and operating over a wide temperature range. The disadvantage, of...
  23. There are several similar packages; all use the...

    There are several similar packages; all use the same (parallel) cable. Microsoft and Norton have similar offerings.
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    Faulty inverter boards weren't uncommon in...

    Faulty inverter boards weren't uncommon in earlier LCD monitors, mostly because of terrible design. You could purchase complete kits of replacement semiconductors for inverter boards. Of course,...
  25. Thread: Computer Fun

    by Chuck(G)
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    It's funny how a little bit of airflow can solve...

    It's funny how a little bit of airflow can solve problems. I've got a couple of OrangePi Zero "cubes" here. One has a small 40mm 12v fan running on 5V (super quiet) and the thing runs for days (3...
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