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Type: Posts; User: Chuck(G)

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  1. POST codes on some systems are output to the...

    POST codes on some systems are output to the printer port. See old discussion here.

    Basically 8 LEDs connected to the data lines on the printer port.
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    See the eeVblog YT channel. There are a couple...

    See the eeVblog YT channel. There are a couple of good videos on this.

    DMMs in general have gotten a lot better over the years. 6000 count multimeters are now pretty close to the "budget"...
  3. In fact, I suspect that with the proper BIOS,...

    In fact, I suspect that with the proper BIOS, just about any MFM controller can be programmed for 3K RPM drives. Mostly a matter of getting the LLF to hang onto each track a bit longer.

    I...
  4. But at 3K RPM, rotational latency is about 17...

    But at 3K RPM, rotational latency is about 17 percent higher than a standard 3600 RPM drive. I suppose that you could take a 3600 RPM drive and play with the tach circuit to make it 3000, but...
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    The fan noise is nothing compared to the...

    The fan noise is nothing compared to the compressors in a bank of tape drives (CDC 657/659). It was white noise, but LOUD. Our department issued earplugs.
  6. It depends on the ability to share IRQ and DMA...

    It depends on the ability to share IRQ and DMA resources. Some cards treat the bus as if they owned it, others can step out of the way. Floppy controllers, for example, have that latter ability,...
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    I've got a Sanco 8001 sample in the hoard, but...

    I've got a Sanco 8001 sample in the hoard, but it's a 5.25" format; it is, however, MFM.
  8. At this stage in my life, I'm happy that I can...

    At this stage in my life, I'm happy that I can sign up for my Covid jab using Firefox... :)
  9. Two ST506 interface controllers in the same box? ...

    Two ST506 interface controllers in the same box? I'd bet against it. You'd have to assign different ports, IRQ and DMA and then find a BIOS to work with the second one. I'm not saying that it's...
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    There are plenty of "PWM fan temperature control"...

    There are plenty of "PWM fan temperature control" modules with temperature probes very inexpensive on eBay. Most are rated for 12VDC, but there should be no reason that they can't be run at 10VDC.
  11. I don't understand FF ESR works fine on my...

    I don't understand FF ESR works fine on my system, but maybe the world is different for us Linux users.

    I've also got Chromium and Brave, but they're really two sides of the same coin.
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    Probably seen too much spilled coffee, or Jolt...

    Probably seen too much spilled coffee, or Jolt cola, then.
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    My HP Vectra was made in France...

    My HP Vectra was made in France...
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    With the proviso that all of the APPENDed files...

    With the proviso that all of the APPENDed files appear only in the currently logged directory. You can even APPEND files from other partitions--back when the maximum size of a partition was 32 MB,...
  15. I've used those eBay headers and the pins fit...

    I've used those eBay headers and the pins fit fine in machine-pin sockets. The problem is that the pins are very fragile because they're so small. A DIP plug with flat pins might be more suitable...
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    Think of APPEND as sort of a symbolic link. You...

    Think of APPEND as sort of a symbolic link. You have files in several directories, but are using a command that operates in the currently logged directory. You'd like to access them all without...
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    Never had a membrane go bad on any of the...

    Never had a membrane go bad on any of the buckling-spring Model M's that I own in 30 years. Must be living right.
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    There's always liquid nitrogen...

    There's always liquid nitrogen :)
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    We used an 11/750 with the Fuji Eagle and a CDC...

    We used an 11/750 with the Fuji Eagle and a CDC Hawk and, of course, the Cipher streamer for backup. We also had two large MPI line printers and probably 15 (I don't recall the exact number) C Itoh...
  20. What I was thinking. You can find the small...

    What I was thinking. You can find the small all-thread as engineering findings. example It's not cheap. The cited example is about 1.1 mm in diameter.

    Some hobby shops carry threaded rod as...
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    I think I still have at least one banging around...

    I think I still have at least one banging around in my scrap metal box. It's quite heavy steel for what it does. I can post a photo if anyone's interested. Were I doing this today, I'd try...
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    It's just a keyboard with a beeper.

    It's just a keyboard with a beeper.
  23. If you've got Win32, there's still...

    If you've got Win32, there's still Ghostscript--I've used that for a long time on both DOS/Win and Linux.
  24. Virtualbox runs NT just fine--it emulates the...

    Virtualbox runs NT just fine--it emulates the needed peripherals. Heck, I ran early Microsoft Xenix on it and still run Win98 when the need arises.

    But again, the problem is that we don't have...
  25. In Virtualbox or qemu, I suspect that it would...

    In Virtualbox or qemu, I suspect that it would run just fine. I think I've got the disc for it; I know that I've still got RH5.
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