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    One of my projects that is geared towards older...

    One of my projects that is geared towards older systems is 50,000+ lines of code. It takes my older system 3+ minutes to compile it, and that's with smart compiling/linking. My modern Windows 10...
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    If your Tandy 1000 has a hard drive, it seems...

    If your Tandy 1000 has a hard drive, it seems faster to edit/compile/test on the Tandy and then push the finished file back to the Mac when done.

    I use Turbo Pascal 7 as my Pascal and Assembler...
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    I always need the extra memory. If you...

    I always need the extra memory.



    If you have to jump through hoops to install something, it's generally not worth attempting to run that something once installed.
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    Another take: Get your game working at an...

    Another take: Get your game working at an acceptable speed first, then worry about snow avoidance later.
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    That didn't work for me, primarily because as you...

    That didn't work for me, primarily because as you noted warm reboots don't restore interrupt vectors. Something always hung the system, maybe because I always load a packet driver, and use 4dos as a...
  6. They were ordered on a whim, so testing will be...

    They were ordered on a whim, so testing will be quick and silly. I was only going to test with RGBI 16 colors.
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    Yes. Too much dark arts necromancy involved. ...

    Yes. Too much dark arts necromancy involved. While the "undocumented" low DOS RAM MCB chain is well-documented, I couldn't find sufficient documentation on how the UMB chain works. The first UMB...
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    Here's the program and source code I wrote that...

    Here's the program and source code I wrote that can patch floppy and hard disk MBRs for this: ftp://ftp.oldskool.org/pub/misc/Software/Patches/patch704.zip

    Final results are 694KB free after...
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    So, I solved my problem, DOS extends into A000,...

    So, I solved my problem, DOS extends into A000, and I now get 680+ KB free without any UMB issues. But I don't think many people are going to like my solution...

    I tried adjusting the BDA to 704k...
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    Already tried; QRAM fails to load, as there is...

    Already tried; QRAM fails to load, as there is another UMB provider present.

    Another thing I'm going to try is writing a device driver to extend DOS to 704k, to be run before the XMS/UMB provider...
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    Don't your feet hit the system under the desk?

    Don't your feet hit the system under the desk?
  12. Meanwhile, I ordered some Chromadepth glasses on...

    Meanwhile, I ordered some Chromadepth glasses on a whim and will be curious to see how well the effort works with the CGA 16-color palette.
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    I removed STOPMAX from config.sys and rebooted,...

    I removed STOPMAX from config.sys and rebooted, and... it still worked. So STOPMAX must have been a vestigial line during my testing.

    Some research shows that while the DOS low RAM MCB chain is...
  14. Did this for years with an unpowered manual...

    Did this for years with an unpowered manual switch without any trouble. My current setup has the DB9 split, so I can capture and view at the same time. TTL is very forgiving.
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    Turns out the UMB MCB chain is a complete second...

    Turns out the UMB MCB chain is a complete second chain that the MCB hammer will need to address; it isn't relocating it, so that's why it gets stomped. The first UMB can be located through a pointer...
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    Thanks very much, this was helpful. While The...

    Thanks very much, this was helpful.

    While The Last Byte was unable to do what I wanted -- it doesn't allow you to mix and match methods, so I couldn't do "adapter RAM" + "EMS4" -- I was able to...
  17. That's awesome :-) Best of luck with the rest.

    That's awesome :-) Best of luck with the rest.
  18. Actually, a lot of people did, but mostly because...

    Actually, a lot of people did, but mostly because they used their systems for word processing or spreadsheets, and VGA allowed them to get bigger screens with clearer text.



    This is one area...
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    In the interest of testing whether or not...

    In the interest of testing whether or not something is wrong with your hardware, try this: ftp://ftp.oldskool.org/pub/misc/Software/Games/outrun.zip
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    I just tested 5 versions of Out Run floating...

    I just tested 5 versions of Out Run floating around on the internet. These downloads boiled down to two versions: The original release, and the later release that supported Tandy DAC digitized sound...
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    Now that's interesting, that did not work for me...

    Now that's interesting, that did not work for me at all. Are we talking DOSMAX21? If not, what version are you using? Also, could you post your CONFIG.SYS?
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    Cool! Now I have something new to try. PC...

    Cool! Now I have something new to try.



    PC DOS 7 only loads DOS memory structures high, but not the kernel. DR DOS 6 *does* load the kernel high, although ironically I had trouble getting DOS...
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    Asking for copies of pirated games is discouraged...

    Asking for copies of pirated games is discouraged on this forum. That said, any cursory internet search will find you several different downloads of outrun, and I'm sure one of those will have a...
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    QRAM attempts everything it can sense, and most...

    QRAM attempts everything it can sense, and most of the command-line options are to tell it NOT to do something. If it detects supported shadow RAM chipsets, it will do the needful.
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    I've run my own mail server since 1998, after...

    I've run my own mail server since 1998, after permanently losing touch with online friends having changed email addresses 3 times in 6 years due to job moves and folding companies. I wanted a...
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