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From: bandy@amdcad.UUCP (Andy Beals)
Newsgroups: comp.sys.amiga,comp.sys.mac,comp.sys.m68k,comp.sys.ibm.pc
Subject: Minor historical point: the origin of ms-dos
Message-ID: <14439@amdcad.UUCP>
Date: Thu, 22-Jan-87 15:42:15 EST
Article-I.D.: amdcad.14439
Posted: Thu Jan 22 15:42:15 1987
Date-Received: Fri, 23-Jan-87 03:49:54 EST
References: <8520@topaz.RUTGERS.EDU> <1270@cbmvax.cbmvax.cbm.UUCP>
Reply-To: bandy@amdcad.UUCP (Andy Beals)
Organization: Advanced Micro Devices, Sunnyvale, California
Lines: 23
Summary: CP/M predates MS-DOS
Xref: mnetor comp.sys.amiga:1613 comp.sys.mac:905 comp.sys.m68k:141 comp.sys.ibm.pc:1169

In article <1270@cbmvax.cbmvax.cbm.UUCP> daveh@cbmvax.cbm.UUCP (Dave Haynie) writes:
>Technically, the Atari doesn't even HAVE an OS.  
>A DOS, maybe,

DOS stands for "Disk Operating System".

>The Atari's BIOS is an attempted clone of MS-DOS

Wrong.  If you would sit down and read the CP/M68K manuals, you would
find that it is essentially just a port of CP/M80 to the 68k.  I won't
say anything about CP/M in general being a single-user clone of TOPS-10...

MS-DOS (or PC-DOS) began life as Seattle Microcomputer Product's DOS-86,
an 8086 clone of CP/M80 (circa '80 or '81), which they sold as operating
system software (along with a translated, slow and unoptimized copy of
Microsoft Basic (v4.51?)) for the 8086 s100 board that they made.  As far
as I remember, DOS-86 arrived on the scene a little earlier than DRI's
CP/M86.

With a mind for ancient history,
	andy
-- 
Andrew Scott Beals, {lll-crg,decwrl,allegra}!amdcad!bandy +1 408 749 3683