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  1. RETRO TECH: MACINTOSH video on youtube (and a reverse history lesson for old people)

    So I ran across this today (do not watch without reading the entire post first):


    https://youtu.be/VJI88QIW7H4

    ...and, once I'd re-learned to keep my stomach acid where it belongs, found it to...
  2. Not odd at all, and we're happy to have you. ...

    Not odd at all, and we're happy to have you. You've already got a really nice collection, and it looks like most of it is in working condition too.
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    It's possible it was never on simtel. Many...

    It's possible it was never on simtel.

    Many archives updated files as they were uploaded. For example, http://ftp.lanet.lv/ftp/mirror/x2ftp/msdos/programming/serial/ has jcom174d.zip which is...
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    You may want to state in your request whether...

    You may want to state in your request whether you're looking for working pieces, or whether you need a certain cosmetic condition.
  5. I wouldn't waste your time -- just go straight to...

    I wouldn't waste your time -- just go straight to ImgBurn and attempt the erase. It will either work, or give you a media error, and in either situation the case will be solved.
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    Many thanks! Moved to the public section of the...

    Many thanks! Moved to the public section of the FTP site.

    I'm concerned about the SCP images. If the Hx* tools can't translate the SCP images to raw or imagedisk properly, then are the SCP...
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    If they're turn-key systems, then why bother...

    If they're turn-key systems, then why bother updating them and risk unknown behavior?
  8. +1 ImgBurn. You didn't state the age of these...

    +1 ImgBurn.

    You didn't state the age of these discs, only that you wrote them on a W95 system. If the data was written 10 years ago, on 20-year-old media, the dye might have solidified by now,...
  9. Or, they were reformatted after use. If you're...

    Or, they were reformatted after use.

    If you're not getting any errors when you put them in, then Occam's Razor applies here.
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    Yes, but this isn't a tragedy -- there are...

    Yes, but this isn't a tragedy -- there are multiple archives on archive.org, and in the unlikely event those go away, my mirror still exists. And I'll bet there are others.
  11. Why would DMA be necessary to update the video...

    Why would DMA be necessary to update the video card?

    I don't know the answers offhand, but this may help: https://retrocmp.de/hardware/pc-elevator-286/pc-elevator-286.htm
    In particular, he has...
  12. I thought the hot-switch was a low/high speed of...

    I thought the hot-switch was a low/high speed of the accelerated CPU, not a switch between CPUs, but I could be wrong.

    One of the more interesting accelerators I have is an 8086 accelerator for...
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    I'm willing to bet the claim was manually...

    I'm willing to bet the claim was manually identified (ie. not a 'bot, but a real person working for the BBC whose job it is to find misuse found it and flagged it). This is atypical, but it does...
  14. If memory serves, you run UP.COM to boot the...

    If memory serves, you run UP.COM to boot the board and switch to it, then DOWN.COM if you want to come back "down" to the 8088. The 8088 continues running, but IIRC the 286 board reboots every time...
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    Absolutely. If you're using reference material...

    Absolutely. If you're using reference material to illustrate or expand on a point you're making, that's exactly what the (USA's) Fair Use clause was created to defend. It is in the strongest spirit...
  16. The PC-elevATor is one of the rarer boards that...

    The PC-elevATor is one of the rarer boards that was a complete 286-on-a-card; when you enable acceleration, the entire system runs off the card. That's why it doesn't need a ribbon cable to the CPU...
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    The only way to shoot CRTs is full manual. If...

    The only way to shoot CRTs is full manual. If you aren't comfortable enough yet to do that, at a bare minimum, shoot in shutter-priority ("S") mode and set the shutter to 1/60, and then at least the...
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    The shutter-ISO-aperture triangle is fairly easy...

    The shutter-ISO-aperture triangle is fairly easy to work with, but you have to have a camera and lens that allows you to manipulate all three independently in manual mode. For shots of...
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    No, I don't think it's necessary -- the IMD...

    No, I don't think it's necessary -- the IMD conversions appear just fine. I was just miffed the HxC software GUI claimed to be able to extract files when that feature doesn't work (it makes files,...
  20. Yes, it's actually pretty snappy. It won't give...

    Yes, it's actually pretty snappy. It won't give you magical 286 powers as Chuck mentioned, but it's a noticably faster feel than just an NEC V30 upgrade.

    I see the CPU cable in the background of...
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    Using HxC's software, I was able to convert them...

    Using HxC's software, I was able to convert them to ImageDisk and verify correctness, at least to the naked eye -- all attempts to extract the files using HxC's GUI failed; it wrote garbage files. ...
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    The older versions don't require Windows.

    The older versions don't require Windows.
  23. Seconded request for software (and I'm extremely...

    Seconded request for software (and I'm extremely jealous, I've been looking for that for a while!)
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    Link is mangled. Here is the correct link:...

    Link is mangled. Here is the correct link: ftp://ftp.oldskool.org/pub/tvdog/tandy1000/misc/setbpb.zip

    It works by feeding DOS new parameters for the device via INT 21,44 subfunction D (Generic...
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    Just because Borland/Anders did something doesn't...

    Just because Borland/Anders did something doesn't mean it was the best way to do it :-) For example, that count-down method you initially picked has proven to be the biggest complaint about Turbo...
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