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  1. Oh my, no, just no. Don't worry about that! :)...

    Oh my, no, just no. Don't worry about that! :) Flash media don't really care of the drive geometry or media type (fixed/removable; that's purely an OS thing).
    Just think of the many "Raspberry Pi"...
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    Not sure if this is of any help, but DOS Plus is...

    Not sure if this is of any help, but DOS Plus is CP/M-86-based, too. Albeit a bit older than that IBM AT-patched CP/M-86 version..
    It has an MS-DOS 2.x ABI compatibility layer, which could be...
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    Good work! :D Btw, in respect to VM...

    Good work! :D

    Btw, in respect to VM performance..

    In Virtualbox, there's a CPU tab where you can limit the CPU usage for your DOS VM.
    Without some tools, like DOSidle (DOS) or WQGHLT (Win 3.x...
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    On a vintage PC, I often use one of these: a)...

    On a vintage PC, I often use one of these:

    a) WinImage 3 on Windows 3.1x (works on a 286)
    -> video https://youtu.be/2HIk4YhBrGk
    b) Disk Copy Fast (DCF, DOS)
    -> video...
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    I second that. PC-DOS 3.30 added features from...

    I second that. PC-DOS 3.30 added features from the AT world and contained a few bugfixes, also.
    For example, it could handle an AT-style Real Time Clock and newer disk formats (like 3.5" with...
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    Update. I'm still searching for that compiler.....

    Update. I'm still searching for that compiler..
    In the mean time, I found another copy here: https://page.auctions.yahoo.co.jp/jp/auction/p674746410
    Unfortunately, 7000 Yen (~57 or ~$65) is quite...
  7. Thread: NEC V20 and CP/M

    by Jo22
    Replies
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    3,946

    Hey, hey, I didn't mean to criticize anyone....

    Hey, hey, I didn't mean to criticize anyone. Sorry, if it looked that way. :ashamed2:
    I was just curious why back in these days -when CP/M still played a vital role- CP/M Plus or MP/M weren't so...
  8. Thread: NEC V20 and CP/M

    by Jo22
    Replies
    48
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    3,946

    Thank you everyone! I do now understand why CP/M...

    Thank you everyone! I do now understand why CP/M 1.x and 2.2 were such a great break-trough on early micros from the 1970s. :)
    Tiny requirements and flexibility (CP/M was among the first portable...
  9. Thread: NEC V20 and CP/M

    by Jo22
    Replies
    48
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    3,946

    Hm. So there was no interest in actually making...

    Hm. So there was no interest in actually making use of the huge amount of features and fallow memory available on the IBM PC (32-64KiB vs. 256-704KiB) ?
    That's a bummer. :shocked: I assumed the...
  10. Thread: NEC V20 and CP/M

    by Jo22
    Replies
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    3,946

    Ah, I see. Thank your very much for the...

    Ah, I see. Thank your very much for the explanation! :)
    While I "grew up" with the Z80 (one of my first PCs was a Sharp MZ-700), I also valuable its relatives. Both have the same parents, after all....
  11. Hi, I can't answer this directly. You can lift...

    Hi, I can't answer this directly. You can lift the label and check the engravement, though. :)
    I bet it's a flavour of the 8042 microcontroller (datasheets available on the web).
  12. Hmm. Can you still boot from floppy ? If so, I'd...

    Hmm. Can you still boot from floppy ? If so, I'd run CheckIt! and have a look at the memory overview.
    Perhaps the XT-IDE Universal BIOS and the MFM Controller's ROM occupy the same load address..
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    Any model up to 8GB, I would say. If it's larger,...

    Any model up to 8GB, I would say. If it's larger, 16-Bit DOS will likely be confused (as well as some FastDisk drivers for Win 3.1x will be confused).
    It's not about partition sizes, but total...
  14. Microsoft Windows 95 in an emulator ? ;) ...

    Microsoft Windows 95 in an emulator ? ;)

    https://news.ycombinator.com/item?id=10914643
    https://vimeo.com/176489297
  15. I apologize, I didn't write it very well. I meant...

    I apologize, I didn't write it very well. I meant to say that the vintage floppy could be corrupted, because (current) librarians have no clue how to write-proctect a 5.25" disk.
    If the floppy disk...
  16. 5.25" disk - hole/corner covered = protected...

    5.25" disk - hole/corner covered = protected
    3.5" disk - hole covered = unprotected


    https://upload.wikimedia.org/wikipedia/commons/9/9b/Floppy_tabs_3x2.jpg
    "A sheet of 5-1/4" floppy disk write...
  17. Plus the circumstances that there used to be...

    Plus the circumstances that there used to be professional monochrome monitors at the time.
    Monitors from the security sector could display 800 lines, for example, which is still relevant for modern...
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    Poll: Absolute periodcorrectness is an illusion. ;) ...

    Absolute periodcorrectness is an illusion. ;)

    (In reality, generations blur smoothly, fading from one to another.)


    PS: PC-MOS/386 is missing from the list..
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    That's not even necessary if you're lucky. Some...

    That's not even necessary if you're lucky. Some notebooks/laptops exposed the whole ISA bus to a proprietary connector intended for a docking station. :)
  20. Thread: NEC V20 and CP/M

    by Jo22
    Replies
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    3,946

    Thanks a lot for the tip with the NSC800, I...

    Thanks a lot for the tip with the NSC800, I didn't know this before! :)
    By "embedded", I meant that the i8085 was quite popular for single-board computers (SBCs), on controllers on ISA/S-100 cards...
  21. I know that Windows 98SE is beloved within the...

    I know that Windows 98SE is beloved within the vintage community, but please people be careful when using it with vintage floppies.
    If your original is unprotected, as companion floppies of books...
  22. Thread: NEC V20 and CP/M

    by Jo22
    Replies
    48
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    3,946

    This is an really interesting thread, I must...

    This is an really interesting thread, I must admit. I always have been fascinated by that 8080 emulation mode of the V-Series chips.
    However, there's one important thing to keep in mind - While the...
  23. Hi, the driver I meant was "Midext MIDI driver...

    Hi, the driver I meant was "Midext MIDI driver for PC speaker" - It can be found at https://remember.the-aero.org/speaker/index.htm . :)


    This reminds me of another thread over here at Vogons....
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    In that case, maybe a NEC V30 could help. It...

    In that case, maybe a NEC V30 could help. It understands most of the 80186 instructions, I believe, as found in the 80286' real-mode instructions set.
    Of course, this would mean having to replace an...
  25. I think the same. That MS driver is of an old...

    I think the same. That MS driver is of an old *.drv type, so it also works on a 80286 in Windows' Standard Mode.
    If memory serves, it can even run on Win98SE and Windows Millenium (WinMe).
    In...
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