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Type: Posts; User: Chuck(G)

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  1. 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...
  4. ...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.
  12. 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.
  13. 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
    ...
  14. 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)...
  15. Oh, I'm sure that an x86 emulator, if it hasn't...

    Oh, I'm sure that an x86 emulator, if it hasn't been written already, could boot DOS. I know that there's a version of Linux that runs on the 32F407. Few who program one realize that the thing even...
  16. I'll take your questions in reverse order. #6....

    I'll take your questions in reverse order.

    #6. EPP has the capability to do DMA transfers, which is what the timing note is talking about. You still deadman-time the transfer, but DMA handles...
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    Or the guy who runs his car on water using magic...

    Or the guy who runs his car on water using magic pills?

    I can see the 5170 being used a multi-user system; after all, we had Z80 boxes being used in that way also. We ran a (gasp) 8085 in 5-user...
  18. I have a digicam set up as a sort of copy stand. ...

    I have a digicam set up as a sort of copy stand. Every once in awhile, it seems to think that I'm lying on my side. I run the result through gimp, but it is annoying. There's probably a setting...
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    Shame that--retroarchive.org is a goldmine of...

    Shame that--retroarchive.org is a goldmine of information. :(
  20. Er, every PS/2 had EPP (bidirectional)...

    Er, every PS/2 had EPP (bidirectional) capabilities, which dates from 1987.
  21. Could well be--I don't know much about that...

    Could well be--I don't know much about that particular model.
  22. Deskpro M--is that the 486 CPU on a card EISA...

    Deskpro M--is that the 486 CPU on a card EISA model? It may simply be too old to support ECP/EPP.
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    IBM PCjr TRM...

    IBM PCjr TRM PDF page 164.
  24. Some SPP implementations still observe bit 5 in...

    Some SPP implementations still observe bit 5 in the control register as switching off the data drivers. Have you tried that?
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    I tried the fan with a 5VDC supply--spins right...

    I tried the fan with a 5VDC supply--spins right up, pushing a lot of air, drawing about 600 ma. and fairly quiet. I may use it that way. Much lower than that (e.g. 3VDC), the fan squeals, but...
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