On Wed, 18 Oct 2000, Keith Kern wrote:
>
>
> I heard that Gates stole dos from IBM when he was working for them. Then he
> modified it a little and put it out on the market at MS-DOS, instead of IBM's
> PC-DOS. Then he just kept modifing it and then put a gui interface with it,
> Windows 2.0.
>
> Jake
>
Nope. MS-DOS was a port of CP/M to the 16 bit Intel processors by a small
west cost company, and Microsoft purchased it. Later, Digital Research
did their own port as well. But the Microsoft version was something like
$50, and the Digital Research version was over $100, so most people went
with the Microsoft version. This was when purchased with the system -
retail price of the two versions was comparable.
The big advantage of both versions was that CP/M programs could be ported
without too much trouble, because file access and I/O access was basicly
the same. Later, improvments in I/O and file system access were added,
and things like File Control Blocks were phased out.
An interesting side note - MS-DOS basicly stopped development at version
3.2 untill Digital Research released DR-DOS (4.0?) with added features
such as high memory support, extended memory support, and the ability to
load devices drivers and part of the OS in high memory. After this,
things got interesting for a while...
Mikkel
--
Do not meddle in the affairs of dragons,
for you are crunchy and taste good with ketchup.
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