From: grante@visi.com (Grant Edwards)
Subject: Re: M2 history - relations to Ada
Date: 1999/02/05
Date: 1999-02-05T00:00:00+00:00 [thread overview]
Message-ID: <4Ruu2.3162$NN.150859@ptah.visi.com> (raw)
In-Reply-To: 87ww1x3ogi.fsf@mihalis.ix.netcom.com
Chris Morgan (mihalis@ix.netcom.com) wrote:
: > Just one small point of clarification about this "history:"
: > Gates didn't write DOS. Microsoft, which had been writing language
: > translators -- e.g., BASIC and FORTRAN -- _bought_ DOS from Seattle Computer
: > Products.
:
: Didn't SCP nickname it QDOS or "quick and dirty operating system" and
: wasn't it just a rip off of CP/M?
Definitely.
The FCB structure was almost identical, the layout of .com files was
the same. You could call BIOS routines by doing a jump to address
0005 just like CP/M. The systems calls were the same as CP/M, etc.
Of course, parts of CP/M were pretty transparently borrowed from RSTS
and possibly other systems at DEC (which is where Gary Kildall worked
before he became Digital Research and started selling CP/M).
--
Grant Edwards
grante@visi.com
next prev parent reply other threads:[~1999-02-05 0:00 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-01-22 0:00 Time to join the fold? Mike Silva
1999-01-22 0:00 ` Tucker Taft
1999-01-25 0:00 ` Mike Silva
1999-01-25 0:00 ` Pat Rogers
1999-01-25 0:00 ` robert_dewar
1999-02-02 0:00 ` news.oxy.com
1999-01-25 0:00 ` dennison
1999-01-31 0:00 ` Matthew Heaney
1999-02-01 0:00 ` Dynamicly declaring arrays (was: Time to join the fold?) dennison
1999-02-01 0:00 ` Larry Kilgallen
1999-02-01 0:00 ` Matthew Heaney
1999-02-02 0:00 ` robert_dewar
1999-02-02 0:00 ` news.oxy.com
1999-02-02 0:00 ` nabbasi
1999-02-02 0:00 ` dennison
1999-02-02 0:00 ` robert_dewar
1999-02-02 0:00 ` dennison
1999-02-02 0:00 ` Al Christians
1999-02-02 0:00 ` William Clodius
1999-02-03 0:00 ` Robert A Duff
1999-02-03 0:00 ` Modula 2 William Clodius
1999-02-02 0:00 ` Dynamicly declaring arrays (was: Time to join the fold?) robert_dewar
1999-02-03 0:00 ` news.oxy.com
1999-02-03 0:00 ` Robert I. Eachus
1999-02-04 0:00 ` M2 history - relations to Ada news.oxy.com
1999-02-04 0:00 ` David C. Hoos, Sr.
1999-02-04 0:00 ` news.oxy.com
1999-02-04 0:00 ` G.S. Vigneault
1999-02-04 0:00 ` Jean-Pierre Rosen
1999-02-04 0:00 ` Chris Morgan
1999-02-04 0:00 ` Jerry van Dijk
1999-02-05 0:00 ` Grant Edwards [this message]
1999-02-04 0:00 ` Aron Felix Gurski
1999-02-05 0:00 ` Robert Lanziner-Furtenbach
1999-02-04 0:00 ` David C. Hoos, Sr.
1999-02-05 0:00 ` Robert Lanziner-Furtenbach
1999-02-04 0:00 ` Chuck Clark
1999-02-10 0:00 ` Andreas Borchert
1999-02-04 0:00 ` robert_dewar
1999-02-02 0:00 ` Dynamicly declaring arrays (was: Time to join the fold?) dennison
1999-01-26 0:00 ` Time to join the fold? Jean-Pierre Rosen
1999-01-26 0:00 ` dennison
1999-01-26 0:00 ` Pascal MALAISE
1999-01-27 0:00 ` Steve Whalen
1999-02-01 0:00 ` Robert I. Eachus
1999-01-23 0:00 ` Steve Whalen
1999-01-23 0:00 ` Tom Moran
1999-01-24 0:00 ` Steve Whalen
1999-01-24 0:00 ` Tom Moran
1999-01-23 0:00 ` Matthew Heaney
1999-01-23 0:00 ` Tom Moran
1999-01-24 0:00 ` Larry Kilgallen
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