DOS ain't dead

MSDOS close to Unix (Developers)

posted by kerravon, Ligao, Free World North, 26.12.2021, 08:17

[post split due to unaccepted word]

I recently noticed that the MSDOS 2.0 API is very
close to Unix with INT 21H APIs like open, read,
write, seek, close.

I know that various C compilers for MSDOS came with
functions like open() but I never used them so I'm
not sure of the details.

I'm wondering whether Microsoft effectively introduced
something similar to POSIX with their C compiler,
providing wrappers for each of their system calls, or
at least the most important ones.

In which case, a true 32-bit successor to MSDOS would
be something that provides a 32-bit open() with the
same parameters as MSDOS 2.0. Win32 should not
be considered the successor.

Is there a possibility of a rival to POSIX here?
I never liked POSIX when they made fork() a requirement.

Complete thread:

• MSDOS close to Unix - kerravon, 26.12.2021, 08:17 (Developers)
  • MSDOS close to Unix - kerravon, 26.12.2021, 08:18
  • MSDOS close to Unix - tkchia, 26.12.2021, 09:05
    • MSDOS close to Unix - kerravon, 27.12.2021, 04:31
      • MSDOS close to Unix - jhall, 27.12.2021, 20:02
  • MSDOS close to Unix - DosWorld, 10.01.2022, 20:35
    • MSDOS close to Unix - kerravon, 11.01.2022, 02:19