> On May 27, 2025, at 5:31 PM, Aitor Santamaría via Freedos-devel > <freedos-devel@lists.sourceforge.net> wrote: > > Hi, > > Thanks to all for the attention. > Actually I seem to vaguely remember some such list in an undocumented DOS > book or document, but was unable to find it, and hoped someone would. > > Thanks anyway! > Aitor
I think in general for MS-DOS and other DOS, there are usually 4 type programs which return of EXIT CODE. 1) Programs like CHOICE that return a code to provide information. 2) Programs that may return an OS, BIOS or Language based error number. Like hat list I mentioned earlier or ones like those in my ancient Pascal source https://github.com/shidel/DustyTP7/blob/master/ERROR/INCLUDE/ERCONST.INC <https://github.com/shidel/DustyTP7/blob/master/ERROR/INCLUDE/ERCONST.INC> For example, may of the old programs compiled by Turbo Pascal that use the Borland CRT unit fail with runtime error 200 (Divide by zero). 3) Programs with return simply 0 for success and either 1 or some custom error value for failure.
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