From what you say, it comes as freeware without source. Therefore, even if it might eventually come (I don't think so either) as a "Third Party" utility, having no sources it cannot replace FreeCOM (which by the way is also a quite good tool) (although I might be wrong, Jeremy, Jim or Bernd can tell me wrong).
FreeCOM is still preferred, due to size and license. Just as I prefer the FreeDOS kernel over the Win9x kernel (io.sys).
Silly Microsoft for including a bitmap into a 220KB kernel which was also intended to be put on bootdisks with only 1.44MB capacity.
With WinME they corrected this, but the WinME's IO.SYS file does not allow many operations (SYS C: for example).
WinME 's IO.SYS is 44KB, if I remember correctly.
Anyway, 4DOS is *VERY* powerfull, but the shell is about 200KB. Very interesting as a 3rd-party freeware application.
No way they would release it as open source, as JPsoft has other products based on the 4DOS code.
when no XMS memory is available (a clean boot process), both 4DOS and FreeCOM use enormous amounts of memory.
This can be demonstrated by using FreeDOS HIMEM.EXE options as implemented by Michael Devore to limit the available XMS-memory to just
the amount needed for DOS=HIGH (put kernel parts in High Memory Area).
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