DOS ain't dead

not setting carry (Developers)

posted by ecm  , Düsseldorf, Germany, 17.10.2025, 18:43

>
> I think that's covered by this:
>
> Greater than 73H on MSDOS 7.0
>
> It's only 74H and above that I am expecting to have the "carry issue"
> on that particular version of MSDOS.

Indeed the maximum command is 73h, but the "high" functions aren't the only ones that use MS-DOS v1 style return. So it's a valid question to study what exactly it does for function 71h.

---
l

Complete thread:

• not setting carry - kerravon, 16.10.2025, 10:29
  • not setting carry - ecm, 16.10.2025, 16:17
    • not setting carry - bretjohn, 16.10.2025, 23:59
      • not setting carry - ecm, 17.10.2025, 09:30
    • not setting carry - kerravon, 17.10.2025, 07:58
      • not setting carry - ecm, 17.10.2025, 10:29
        • not setting carry - kerravon, 17.10.2025, 10:55
          • not setting carry - ecm, 17.10.2025, 11:31
            • not setting carry - kerravon, 17.10.2025, 16:51
              • not setting carry - ecm, 17.10.2025, 18:43
                • not setting carry - kerravon, 17.10.2025, 19:05