Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site utah-cs.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!gatech!seismo!utah-cs!e-smith
From: e-smith@utah-cs.UUCP (Eric L. Smith)
Newsgroups: net.arch
Subject: History of MS-DOS (&PC-DOS)
Message-ID: <3581@utah-cs.UUCP>
Date: Sat, 14-Dec-85 19:30:36 EST
Article-I.D.: utah-cs.3581
Posted: Sat Dec 14 19:30:36 1985
Date-Received: Mon, 16-Dec-85 04:02:38 EST
References: <12200023@orstcs.UUCP>
Reply-To: e-smith@utah-cs.UUCP (Eric L. Smith)
Organization: University of Utah Ada-to-Silicon project
Lines: 24

In article <12200023@orstcs.UUCP> richardt@orstcs.UUCP (richardt) writes:
>
>1) IBM wanted CP/M-86.  When Microsoft informed them that DRI was respnsible
>for CP/M, IBM went and talked to DRI.  DRI refused to give them exclusive
>rights to name and marketing, along the lines which PC-DOS now has.  IBM
>went back to MicroSoft and said "Write us an OS that can use CP/M calls and
>looks like CP/M-86."  Voila, MS-DOS is born.  Note that the CP/M "Call 5"
>convention is *still* supported in MS/PC-DOS.
>
Sorry, but Microsoft bought this thing called "86-DOS" from Seattle Computer
and turned it into MS/PC-DOS 1.0.  When I worked at Apparat in Denver, we had
a Seattle Computer system running more than a year before the IBM PC was
introduced, and all of our software moved directly to the PC without
modification.  This is how we got an assembler before the IBM Macro Assembler
became available.  The interupts and system calls were identical.
-- 
-------------------------------------------------------------------------------
Eric L. Smith  (801) 581-8100  e-smith@utah-cs.arpa  ...decvax!utah-cs!e-smith
3118 Merrill Engineering,  University of Utah,  Salt Lake City, UT  84112

The opinions expressed herein do not necessarily represent those of the
University of Utah, my friends, enemies, computer, or even me.  :-)

Is this the most magnificant fire you have seen or am I crazy?