The Origins of DOS

Warren Wolfe wizard at
Fri Oct 27 21:16:52 CDT 2006

On Fri, 2006-10-27 at 20:57 -0500, Jim Isbell, W5JAI wrote:

> OK, where did TRSDOS fit in?  It was before MSDOS as far as sale to the public.

    It was its own universe, Jim.  The links and questionable parentage
of the original version of DOS are tied directly to CP/M, which was the
first O/S for personal computers that any significant number of
businesses embraced.  And, Windows came out of the DOS world, and now
dominates as few products have dominated before.  (Note: I am NOT
claiming this is a GOOD thing.)

    From what I can tell, TRSDOS was not a rip-off of anyone's software,
and nobody bothered to rip it off, so it's pretty much out of the world
of O/S scandal.  It actually was pretty decent, and had a few ideas of
merit that didn't make it into the mainstream world for a while.  It was
just totally tied to Radio Shack computing, and suffered a mortal wound
when IBM came out with their PC.  No fault of its own.


            Warren E. Wolfe
            wizard at

More information about the cctech mailing list