Article View: comp.sys.ibm.pc
Article #15594Re: Minor historical point: the origin of ms-dos
From: davidsen
Date: Thu, 05 Feb 1987 16:07
Date: Thu, 05 Feb 1987 16:07
18 lines
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1494 bytes
When I upgraded my S100 system from Z80 to 8086, I was a Seattle
dealer. The first cut of the o/s was called "QDOS" (quick and
dirty operating system), and was similar to DOS1.0, which is an
attempt to look like CP/M-86. I later bought a generic version
of CP/M-86 and ported it to my machine, rolling my own BIOS. It
took me an entire weekend to get it working!
The main difference was that QDOS had a flat file system, while
CP/M-86 had 16 "user numbers". Think of that as 16
subdirectories names 0-15. Programs in user 0 could be executed
from anywhere on the disk. Enough on origins, already, it makes
me feel old.
--
bill davidsen sixhub \
ihnp4!seismo!rochester!steinmetz -> crdos1!davidsen
chinet /
ARPA: davidsen%crdos1.uucp@crd.ge.com (or davidsen@crd.ge.com)
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!rutgers!im4u!ut-sally!seismo!mcnc!gatech!cuae2!ihnp4!chinet!steinmetz!davidsen From: davidsen@steinmetz.UUCP Newsgroups: comp.sys.ibm.pc Subject: Re: Minor historical point: the origin of ms-dos Message-ID: <1178@steinmetz.steinmetz.UUCP> Date: Thu, 5-Feb-87 11:07:33 EST Article-I.D.: steinmet.1178 Posted: Thu Feb 5 11:07:33 1987 Date-Received: Sun, 8-Feb-87 04:02:09 EST References: <8520@topaz.RUTGERS.EDU> <1270@cbmvax.cbmvax.cbm.UUCP> <2955@watdcsu.UUCP> <1001@gould9.UUCP> Reply-To: davidsen@kbsvax.UUCP (william E Davidsen) Organization: General Electric CRD, Schenectady, NY Lines: 18