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Post by sld on May 2, 2021 20:00:42 GMT 1
Hi.
I recently downloaded the most recent version of vDos to my computer. It’s a 64-bit machine running Windows 10.
I copied my DOS program files into the vDos file. There aren’t many. It’s a 16-bit program from the 1980’s or 90’s.
I can open my DOS program using vDos but that’s all I can do. The splash screen displays the usual text at the bottom of the page, “Press RETURN to continue …” but the cursor doesn’t flash as it’s supposed to, and pressing RETURN does nothing.
Can you help me get past my DOS program’s splash screen? Is there anything you need?
Thanks.
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Post by Jos on May 2, 2021 21:24:19 GMT 1
I hate flashing/distracting things, so the DOS cursor in vDos doesn’t blink.
Hard to tell why your program doesn’t proceed hitting the requested ENTER. Could be it relies on the redirection of the low level keyboard INT 9 interface.
You can send me the program by wetransfer.com. Though mind, it has to be a ‘serious’ program to get me interested.
Jos
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Post by sld on May 3, 2021 22:37:47 GMT 1
Thanks Jos for your quick reply. What address do I use to send the program to you?
To answer your concern, it’s a serious program. It’s called Fourier Analysis Forecaster, or FAF for short. You use it to map a trendline and sine waves to a data series, like the price history of a security or an index average like the Dow Jones 30 Industrial Average. Just load the data in, tell it what kind of trend line you want, and it calculates the trend line plus 9 sine waves. You can then transfer the equations into Excel and do what you want from there. I use it to do stock market research. I've tried to find a modern program that does the same thing, but haven't been successful. Thanks. SLD
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Post by Jos on May 4, 2021 21:50:16 GMT 1
You can send it (eventually by wetransfer.com) to jas@vdos.info. The “a” of course should a “o”.
Jos
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Post by sld on May 5, 2021 13:02:54 GMT 1
Hi Jos. Just sent the files by wetransfer. Please let me know if you didn't get them. Thanks. SLD
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Post by Jos on May 5, 2021 15:11:03 GMT 1
I didn't get it.
Jos
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Post by sld on May 5, 2021 17:42:41 GMT 1
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Post by Jos on May 5, 2021 21:35:30 GMT 1
I had a first look at your FAF program.
It was an OMG experience: It reads the DOS CON: device to interact with the keyboard, instead of using BIOS functions. OK, it’s a dinosaur, perhaps that’s even intended so you can redirect input, automate things?
After displaying “Press RETURN to continue …” the program calls the DOS API to read 1 byte/character from CON:. vDos correctly returns the RETURN key when pressed. The following tests by the program also seem correct, was it ENTER… But it somehow stays in a loop, constantly reading CON: for 1 byte. The logic of this everlasting loop mystifies me due to illogical code sequences, like: MOV [BP-06],AL CMP BYTE PTR [BP-06],1A JNZ ….
The program saves a register to memory, then uses that same memory content for a test while that is already at hand (AL). Just one simple example of the illogical code sequences, complicating to spot what’s going on.
I have to let it be until I have more time (to waste). Hopefully I come back to you in a month or so, sorry.
Jos
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Post by sld on Jun 5, 2021 17:21:14 GMT 1
Hi Jos. I'm hoping you can find the time for my issue. I still can't find a program that does what this one does, and I've tried. Thanks, and all the best. SLD
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Post by Jos on Jun 5, 2021 18:18:20 GMT 1
I did forget about you, probably hoping at that time you would find another solution. FAF however doesn’t work with DOSBox either, though it runs in NTVDM. I’ll have a closer look next week.
Jos
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Post by Jos on Jun 11, 2021 19:00:41 GMT 1
I’ll send you a modified vDos.exe to test. FAF seems to work correctly, but I have no clue if it all makes sense.
Jos
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Post by sld on Jun 15, 2021 2:02:52 GMT 1
Hi Jos. I tried posting something on Friday but it doesn't look like it went up. Anyway, FAF works perfectly in VDOS on my computer. Thank you very much. Can I make a donation to your site? SLD
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Post by Jos on Jun 15, 2021 7:59:53 GMT 1
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Post by sld on Jun 17, 2021 13:04:38 GMT 1
Hi Jos. Sent my donation June 15. Hope you received it. Again, thanks for your help. SLD
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Post by Jos on Jun 17, 2021 14:55:04 GMT 1
I got it, thank you.
Jos
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