[EXTERNAL] Re: Compile as DOS application?

Mon Jun 2 17:15:46 GMT 2025

> They won't, and Cygwin itself has no way of changing that. 64-bit
> editions of Windows cannot run anything 16-bit (technically, the V86
> mode is gone from both the CPUs and the system). That does mean DOS
> itself is not available, and therefore nothing expecting to run in DOS
> can run either.

You can use DOSBox (IIRC 0.74-3 was the latest version) on any current Windows OS to run those applications.
HTH,
Anton Lavrentiev
Contractor NIH/NLM/NCBI