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Type: Posts; User: Chuck(G)

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  1. Replies
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    When we were getting our pre-release stepping of...

    When we were getting our pre-release stepping of the 286 system going, Microsoft was handling the non-kernel aspects of SCO Xenix, while Intel was tasked with getting the kernel to work. They were...
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    Well, you can get the 5.25" 1.2M drive to read in...

    Well, you can get the 5.25" 1.2M drive to read in HD mode by calling it a 1.44M drive--and you can probably write, but not format that 1.2M in HD mode.



    Realistically, virtually all common...
  3. Thread: Sym-1

    by Chuck(G)
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    "2 row 6 position 0.156 spacing card edge...

    "2 row 6 position 0.156 spacing card edge connector"

    Here's what they look like

    Should be pretty easy to find from the usual sources--just pay attention to spacing.
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    IMD doesn't give a pig's patoot about the BIOS. ...

    IMD doesn't give a pig's patoot about the BIOS. It doesn't use it--direct hardware access.

    Try taking a known-good floppy and using the "Align" function to step through the sides and cylinders...
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    Those errors can usually be traced down to the...

    Those errors can usually be traced down to the disk you're trying to read or the drive you're trying to read said disk with.
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    IMD isn't set up to run from floppy. You need a...

    IMD isn't set up to run from floppy. You need a functioning hard disk.
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    Hmmm, I googled it and found it in 20 seconds: ...

    Hmmm, I googled it and found it in 20 seconds:

    http://www.classiccmp.org/dunfield/img/index.htm

    Gotta teach googling skills one of these days. :)
  8. It's only a box. I've built drive enclosures...

    It's only a box. I've built drive enclosures out of cedar, acrylic and metal. Haven't done one out of brass yet, but I've got the raw materials.
  9. Yes, the ISA bus is what it is.

    Yes, the ISA bus is what it is.
  10. Well the single FH drive 8" cabinet I bought from...

    Well the single FH drive 8" cabinet I bought from Jade back in the day was more or less a U-shaped piece of sheet metal for the cover and an L-shaped one for the drive support.

    Grab some sheet...
  11. I wonder if the DMA setting is for a laser...

    I wonder if the DMA setting is for a laser printer driver.
  12. Just walk across the floor in bare feet--you'll...

    Just walk across the floor in bare feet--you'll find them. :)

    ...or did you mean PINs (Personal Identification Numbers)?
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    Looks like the original one that I'm still using...

    Looks like the original one that I'm still using in a system. You probably won't be disappointed. For the time, CerDIP packaging was superior to plastic.
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    I think that the explanation is at least...

    I think that the explanation is at least plausible and initially has nothing to do with LOADALL, but rather how segment register accesses differed in real and protected mode.

    To me, the 286...
  15. ...and folks were modifying 5150 and 5160...

    ...and folks were modifying 5150 and 5160 parallel ports to make them EPP before the PS/2. We just called them "bidirectional".
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    Have you disabled the floppy controller in your...

    Have you disabled the floppy controller in your BIOS? Looks like you haven't.
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    So, the same chipset on the Supermicro P6xxx...

    So, the same chipset on the Supermicro P6xxx boards--runs fine at 100MHz FSB, can be overclocked to 133, weather permitting. Should have no problem with CPUs up to 1.4GHz/1.3GHz in proper slockets...
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    Yup, that's why there are boxes drawn around the...

    Yup, that's why there are boxes drawn around the silkscreen legend.
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    What's the chipset? The board may have been...

    What's the chipset? The board may have been rolled out when the fastest CPU available was 600MHz. Basically, for P3 systems, you have FSB frequencies of 133 and 100 MHz; the multiplier is...
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    It's pretty straightforward. Let's take your...

    It's pretty straightforward. Let's take your example of A: 1.2M and B: 720K

    1,2 = jumpers on for the first drive connected to CN2
    3 = off, 4 = on for a second drive connected to CN2
    5 and 6...
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    The battery on my Quadboard started leaking about...

    The battery on my Quadboard started leaking about 4 years after purchase. I ran some leads off the board to connect the battery externally, where it could do no harm. Still have the board, but...
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    There should be a boatload of information on the...

    There should be a boatload of information on the Epson.

    But I've replaced 8086 CPUs in several systems with NEC V30s, including a GridCase and an AT&T PC6300. No problems at all.
  23. I note that the DDJ code also includes...

    I note that the DDJ code also includes parallel-port connections (nibble at a time), so that should be useful.
  24. Also, here are the source and compiled...

    Also, here are the source and compiled executables from an old 1996 DDJ article by Kyle York on building a serial network redirector:

    https://app.box.com/s/d5adl9w983x6f62n60l3c6prwbc176wf
    ...
  25. Well, go back to my pdos code; it's mostly C,...

    Well, go back to my pdos code; it's mostly C, with some assembly support in order to (a) eliminate any DOS system calls that might be made by the runtime which would corrupt the system stack or (b)...
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