Recent content by doshea

I've seen it pointed out that if someone writes an article about some topic that you happen to need to know about, and you do some search for that topic, read the AI summary and find it useful enough that you don't have to click through to the article, then you've deprived the author of that...

I don't know a whole lot about tape, but I found this at https://en.wikipedia.org/wiki/End-of-file#tape_mark because I thought tape marks might make a counter-example: https://en.wikipedia.org/wiki/Magnetic-tape_data_storage#IBM_formats says something about NRZI encoding, so I suppose that...

In the past, I'm pretty sure that Cygwin's dd was able to read and write floppy disks, but I probably haven't tried it since Windows 8 was relatively new. I probably didn't try it with a 720K disk in a "1.44M" drive either. Good luck!

In Turbo C++ 1.0 I found a "No declaration for function 'ident'" warning checkbox I could turn on, under "Options" -> "Compiler" -> "Messages..." -> "Frequent errors..." -> "More", which gave me the same sort of warnings I got in Borland C++ 3.1.

Did you have some #includes you didn't show? I tried this in Turbo C++ 1.0 and 3.0 and got rubbish values from coreleft() and the pointers always ended up showing as 0000:0004 or something. Once I tried building in Borland C++ 3.1, it complained about there not being prototypes for anything...

Just to add to things already said in the thread: - My recollection is that one of the later 1-2-3 Release 2 versions came out (2.3?) around the same time as Release 3, and you were encouraged to stick with R2 if you had a more resource-constrained system. I think they added a WYSIWYG add-on to...

If you'd particularly like to do this from DOS, this post has some DOS ports of dd, but you'd need to use the DOS FORMAT command against a real floppy drive (at least real from DOS's perspective) and then create an image of that floppy, rather than use mkfs.fat.

Is it returning NULL at least? Perhaps if the variable you're assigning the result of malloc() to is called p for example, it would be worth printing sizeof(p) to verify that it's really a 4 byte far pointer as you expect? And welcome to the forum, nice to see another DOS coder!

That's a shame, I was wondering if perhaps it did too many things for an add-in API to be able to support it :( Or perhaps they wanted to support earlier versions when there may not yet have been an API yet.

I was watching a video on YouTube which mentioned a "HAL" addin which provided a natural language interface to 1-2-3, and it happens to actually be available online with documentation and is for release 2: https://winworldpc.com/product/lotus-hal/1x I think the example I saw was it being asked...

I watched this video some time ago where someone did something like this - I'm afraid I can't recall precisely what they did - with one of those drives from an IBM PS/2 which had quite distinctive sounds:

IBM Enhanced 5250 Emulation Program 2.12 (software only), 2.2 (software only) and 2.4 (manual only) According to my notes, versions 2.12 and 2.2 always use IRQ 5. I assume the manual should be the same as the one I linked above, not sure if I ever checked this though. I think I was wrong in my...

Maybe it would be worth doing a Google search for "ipad smb" or something, and then changing "Any time" to like 2014-2016 or some relevant date range (perhaps only possible on the desktop version of the site), to see what apps people were saying were useful back at the time this particular iPad...

I interpret all of this as meaning that it's inspired by MS-DOS 3.31, but not based on any of its binaries, so not subject to the limitations that Chuck(G) mentioned. From Comparison.txt I can only guess that the main inspiration it takes from MS-DOS 3.31 is that DOS can be really small (which...

"Royalty free" generally means that there is no cost for each unit you ship, but there is an up-front cost, i.e. it's non-free, so I assume you'll charge for this? I got the impression that PC-DOS 7.1 was not something that anyone could sell, because it was based on software whose licenses...