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Type: Posts; User: kgober

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  1. Replies
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    Given that a D81 file is 819200 bytes (822400...

    Given that a D81 file is 819200 bytes (822400 bytes if you include error bytes), I can't help but wonder where you are planning to write these images? Do you have a drive attached to your C128 that...
  2. I store expansion cards in a similar fashion. ...

    I store expansion cards in a similar fashion. Sometimes I don't have enough antistatic bags for each card to have its own, or the bags I have are too big. In such situations I might put 2 cards in...
  3. Thread: Uh... hi?

    by kgober
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    12
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    339

    Hi, welcome!

    Hi, welcome!
  4. Replies
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    370

    I checked one of my boot floppies and it has...

    I checked one of my boot floppies and it has LASTDRIVE=Z, but it also uses the VLM client rather than NETX. so maybe that's the difference, DOS LAN Requestor and NETX use drives after LASTDRIVE,...
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    add LASTDRIVE=Z in your CONFIG.SYS. That tells...

    add LASTDRIVE=Z in your CONFIG.SYS. That tells DOS to allocate space for drive letters all the way to Z. Then when you load NETX it will use the first unused drive letter in the range C-Z (iirc) to...
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    My guess is that this is the CPU card intended to...

    My guess is that this is the CPU card intended to be used with a passive EISA backplane. The 2 ports are probably for display and keyboard. Other slots in the backplane would have contained your...
  7. Sticky: As PC/XT clones go, it's slightly less generic...

    As PC/XT clones go, it's slightly less generic than most. It uses a power supply with the switch on the back rather than on the side. It appears to have an infrared port on the bottom front edge --...
  8. Thread: Covid-19

    by kgober
    Replies
    191
    Views
    9,881

    This is a good video explaining things:...

    This is a good video explaining things: https://youtube.com/watch?v=BYTFk34nhol

    The opportunity to stop COVID-19 has passed in most places, so the current objective is to slow the spread so that...
  9. Replies
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    I believe the cause of this is related to...

    I believe the cause of this is related to COVID-19 having a fairly large contagious period before symptoms develop. So you can have it and not realize for many days, meanwhile spreading it to...
  10. Replies
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    We're not trying to win you over, we're trying to...

    We're not trying to win you over, we're trying to get you to stop making false claims just because you don't like Unix.

    It's ok not to like Unix or Linux, but please stop claiming that DOS can do...
  11. Replies
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    2,211

    I took some time to test a few programs to see...

    I took some time to test a few programs to see what worked on a VT52 and what did not. Most things worked adequately (although mg and tetris were a little odd looking without reverse video) but two...
  12. Connect the terminal to a serial port. I have a...

    Connect the terminal to a serial port. I have a vague recollection that when you power on the system (or maybe it's when you boot from install media) you get a prompt asking which device you want to...
  13. Sticky: I had a CGA card with two RCA connectors years...

    I had a CGA card with two RCA connectors years ago, and I think one of them was monochrome and the other was color. Presumably the monochrome one was better for 80-column text and the other one...
  14. Replies
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    Can confirm, I think it took only a few hours to...

    Can confirm, I think it took only a few hours to write the receive handling (including escape code processing) in my own VT52 emulator. By far the largest amount of coding time was spent on...
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    528

    Oh, maybe the problem is finding sprocket-feed...

    Oh, maybe the problem is finding sprocket-feed paper that's 8.5" wide *total*. It suddenly occurs to me that all my fanfold paper is 9.5" wide (8.5", plus 0.5" on each side for the sprocket holes)...
  16. Sticky: I see OPTi 82C571 and 82C572 chips, and searching...

    I see OPTi 82C571 and 82C572 chips, and searching for those yields:
    https://ia801301.us.archive.org/24/items/bitsavers_optibrochuhure1993_1065722/ISA_VL_Chipset_Brochure_1993.pdf

    The brochure...
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    I have some fanfold paper, which I'm confident...

    I have some fanfold paper, which I'm confident won't be of any interest purely due to the expense of shipping it across the pond. But it does make me wonder whether you've considered using fan-fold...
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    I really appreciate that I can have 200+ tabs...

    I really appreciate that I can have 200+ tabs open in Chrome for over a week and performance doesn't suffer much. If the new Edge can't do this I think I'll need to keep using Chrome.
  19. I assume because it's posted in "Marketplace /...

    I assume because it's posted in "Marketplace / Vintage Computer Auctions" that it's for sale. The link takes you to the auction.
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    I would guess BD CSM is a self-test diagnostic...

    I would guess BD CSM is a self-test diagnostic code indicating there's some kind of problem with the system. Is that code mentioned in any of the system manuals?
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    I'm surprised to hear it as well. I saw an...

    I'm surprised to hear it as well. I saw an Adaptec disk controller in the list as well that I thought would get some interest. And you don't see Localtalk cards very often; I'm surprised you had no...
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    It looks like that terminal might also be known...

    It looks like that terminal might also be known as the Zentec 9003. See if this document helps:...
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    This is basically what you need to do, and the...

    This is basically what you need to do, and the command to save the BAM (and any other dirty buffers) is commonly called "closing a file".

    If you are feeling truly inspired, you might consider...
  24. Finalization was only 'final' using CD-R media. ...

    Finalization was only 'final' using CD-R media. For a CD-RW you could always 'unfinalize' a disc by erasing it completely. Recall that multi-session discs were a thing, and finalization was how you...
  25. On the PC, the tools I generally used for this...

    On the PC, the tools I generally used for this kind of thing in the DOS days were Turbo Debugger to identify what to patch (and to test patches), and Norton Disk Editor to actually apply (i.e. save)...
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