Editing DR-DOS (section)

==References==
{{Reflist|refs=
<ref name="about">{{cite web |title=About DRDOS |work=DRDOS Embedded DOS |publisher=[[DRDOS, Inc.]] |date=2013 |url=http://drdos.com/company/about-drdos/ |url-status=usurped |archive-url=https://web.archive.org/web/20180603094924/http://drdos.com/company/about-drdos/ |archive-date=2018-06-03 |access-date=2015-01-18}}</ref>
<ref name="Wein_2009_DOSPLUS">{{cite web |title=DRI History and Joe Wein |author-first=Josef "Joe" |author-last=Wein |editor-first=Herbert R. |editor-last=Johnson |date=2010-02-19 |orig-date=November 2009 |url=http://retrotechnology.com/dri/dri_wein.html |access-date=2017-01-17 |url-status=live |archive-url=https://web.archive.org/web/20170117185919/http://retrotechnology.com/dri/dri_wein.html |archive-date=2017-01-17}}</ref>
<ref name="podtech">[https://web.archive.org/web/20091226162826/http://www.podtech.net/scobleshow/technology/1593/the-rest-of-the-story-how-bill-gates-beat-gary-kildall-in-os-war-part-1 The rest of the story: How Bill Gates beat Gary Kildall in OS war, Part 1 {{!}} ScobleShow: Videoblog about geeks, technology, and developers]</ref>
<ref name="DRI_1984_PCMODE">{{cite journal |editor-first=Nan |editor-last=Borreson |publisher=[[Digital Research]] |date=March 1984 |title=PC-Mode bridges CP/M and PC-DOS |journal=Digital Dialogue - Employee Newsletter of Digital Research Inc. |volume=3 |number=1 |page=3 |url=http://corphist.computerhistory.org/corphist/view.php?s=documents&id=1008 |access-date=2017-09-10 |url-status=live |archive-url=https://web.archive.org/web/20170910122042/http://corphist.computerhistory.org/corphist/view.php?s=documents&id=1008 |archive-date=2017-09-10}} [https://web.archive.org/web/20170105175506/http://corphist.computerhistory.org/corphist/documents/doc-4468e75a9255a.pdf]</ref>
<ref name="DRI_1984_CDOS31">{{cite journal |editor-first=Nan |editor-last=Borreson |publisher=[[Digital Research]] |title=Concurrent DOS bridges PC-DOS, CP/M |journal=Digital Research News - for Digital Research Users Everywhere |volume=4 |number=2 |page=3 |date=May 1984 |url=http://corphist.computerhistory.org/corphist/view.php?s=documents&id=1011 |access-date=2017-09-10 |url-status=live |archive-url=https://web.archive.org/web/20170910122747/http://corphist.computerhistory.org/corphist/view.php?s=documents&id=1011 |archive-date=2017-09-10 |quote="[[Concurrent DOS 3.1|Concurrent DOS Release 3.1]] is rapidly gaining momentum and support from a wide range of microcomputer manufacturers," Wandryk said. "Some 60 hardware companies have licensed the product since it was released in early March."}} [http://corphist.computerhistory.org/corphist/documents/doc-4468e75a9255a.pdf]</ref>
<ref name="DOS Plus">{{cite book |title=Master 512 Technical Guide |chapter=Chapter 7: DOS Plus: A short history |author-first=Robin |author-last=Burton |location=Leicestershire, UK |publisher=[[Dabs Press]] |publication-place=Prestwich, Manchester, UK |date=September 1989 
|isbn=1-870336-80-1 |edition=First edition, first printing |chapter-url=http://bbc.nvg.org/doc/Master%20512%20Technical%20Guide/m512tech07.htm#Elements%20of%20DOS%20Plus |access-date=2018-05-09 |url-status=live |archive-url=https://web.archive.org/web/20170910174042/http://bbc.nvg.org/doc/Master%20512%20Technical%20Guide/m512tech07.htm |archive-date=2017-09-10}} [https://web.archive.org/web/20240725173413/https://acorn.huininga.nl/pub/docs/manuals/Acorn/80186%20Second%20Processor/Master%20512%20Technical%20Guide.pdf]</ref>
<ref name="Infoword_1988">{{cite magazine |title=Award Software plans to implement Digital Research's OS on ROM chip |author-first=Bob |author-last=Ponting |date=1988-08-15 |magazine=[[InfoWorld]] |url=https://books.google.com/books?id=ZzoEAAAAMBAJ&pg=PA18 |access-date=2014-09-06}}</ref>
<ref name="Caldera_1997_Multi">{{cite book |publisher=[[Caldera, Inc.]] |date=August 1997 |title=OpenDOS Developer's Reference Series &mdash; OpenDOS Multitasking API Guide &mdash; Programmer's Guide |id=Caldera Part No. 200-DOMG-004 |url=http://www.drdos.net/documentation/multtask/01mtch1.htm#651 |url-status=dead |archive-url=https://web.archive.org/web/20170910173003/http://www.drdos.net/documentation/multtask/01mtch1.htm |archive-date=2017-09-10}} (Printed in the UK.)</ref>
<ref name="Chappell_AARD">{{cite web |url=http://members.ozemail.com.au/~geoffch@ozemail.com.au/editorial/aard/index.html |title=The AARD Code |access-date=2007-09-20 |archive-url=https://web.archive.org/web/20100113045219/http://members.ozemail.com.au/~geoffch@ozemail.com.au/editorial/aard/index.html |archive-date=2010-01-13 |url-status=dead}}</ref>
<ref name="DDJ">[http://www.ddj.com/windows/184409070?pgno=4 Dr. Dobb's Journal investigation]</ref>
<ref name="Egbert_1998">{{cite journal |title=Microsoft: Vorgetäuschter Bug legte DR-DOS lahm |language=de |author-first=Egbert |author-last=Meyer |date=1998-08-27 |journal=[[Heise Online]] |publisher=[[Verlag Heinz Heise]] |url=https://www.heise.de/newsticker/meldung/Microsoft-Vorgetaeuschter-Bug-legte-DR-DOS-lahm-14173.html |access-date=2018-07-14 |url-status=live |archive-url=https://web.archive.org/web/20180714175147/https://www.heise.de/newsticker/meldung/Microsoft-Vorgetaeuschter-Bug-legte-DR-DOS-lahm-14173.html |archive-date=2018-07-14}} [https://heise.de/-14173]</ref>
<ref name="Timeline_2014_DOSV">{{cite web |title=Timeline of DOS/V versions |date=2014-11-28 |language=ja |url=http://lsair.html.xdomain.jp/a/e/timeline-of-dosv-versions.html |access-date=2017-01-16 |archive-url=https://web.archive.org/web/20170118051949/http://lsair.html.xdomain.jp/a/e/timeline-of-dosv-versions.html |archive-date=2017-01-18 |url-status=dead}}</ref>
<ref name="DRDOS60V_ViewMAX">{{cite web |author-first1=Roy |author-last1=Tam |author-first2=John C. |author-last2=Elliott |title=DR DOS 6.0/V |date=2014-01-12 |url=https://www.betaarchive.com/forum/viewtopic.php?t=30331 |access-date=2017-01-16 |url-status=live |archive-url=https://web.archive.org/web/20180903045928/https://www.betaarchive.com/forum/viewtopic.php?t=30331 |archive-date=2018-09-03}} (NB. Has screenshots of a [[DBCS]]-enabled version of [[ViewMAX 2]] running on DR&nbsp;DOS 6.0/V and a [[hex dump]] of the corresponding DRFONT database <code>SCREENHZ.FNT</code> for its <code>[[$FONT.SYS]]</code>.)</ref>
<ref name="CW_1992_PalmDOS">{{cite journal |title=Markt für Desktop-Betriebssysteme im Visier - Novell kündigt die ersten Low-end-Produkte mit dem Betiebssystem DR DOS 6.0 an |language=de |date=1992-09-11 |journal=[[Computerwoche]] |publisher=[[IDG Business Media GmbH]] |location=Munich, Germany |author=CW |url=https://www.computerwoche.de/a/novell-kuendigt-die-ersten-low-end-produkte-mit-dem-betiebssystem-dr-dos-6-0-an,1135975 |access-date=2017-07-04 |url-status=live |archive-url=https://web.archive.org/web/20170704215744/https://www.computerwoche.de/a/novell-kuendigt-die-ersten-low-end-produkte-mit-dem-betiebssystem-dr-dos-6-0-an%2C1135975 |archive-date=2017-07-04}}</ref>
<ref name="Dynamic_Idle_Detection">{{cite web |archive-url=https://web.archive.org/web/20120407072428/http://www.wikipatents.com/US-Patent-5355501/idle-detection-system |archive-date=7 April 2012 |url=http://www.wikipatents.com/US-Patent-5355501/idle-detection-system |title=US Patent 5355501 - Idle detection system}}</ref>
<ref name="sdtimes novell v microsoft">{{cite web |url=http://www.sdtimes.com/blog/post/2011/12/19/Novell-v-Microsoft-trial-ends-in-hung-jury.aspx |title=Novell v. Microsoft trial ends in hung jury |publisher=[[SD Times]] |date=2011-12-19 |access-date=2012-03-02 |author-first=J. D. |author-last=Hildebrand |archive-url=https://web.archive.org/web/20120515082145/http://www.sdtimes.com/blog/post/2011/12/19/Novell-v-Microsoft-trial-ends-in-hung-jury.aspx |archive-date=2012-05-15 |url-status=dead}}</ref>
<ref name="pcmag novell dos">{{cite magazine |url=https://www.pcmag.com/encyclopedia_term/0,2542,t=Novell+DOS&i=48102,00.asp |archive-url=https://archive.today/20130131022157/http://www.pcmag.com/encyclopedia_term/0,2542,t=Novell+DOS&i=48102,00.asp |url-status=dead |archive-date=31 January 2013 |title=Novell DOS |magazine=[[PC Magazine]] |access-date=2012-03-02 }}</ref>
<ref name="Scott_1991_Merger">{{cite journal |title=Novell/DRI merger to reap better client management |author-first=Karyl |author-last=Scott |date=1991-07-29 |journal=[[InfoWorld]] |url=https://books.google.com/books?id=mVAEAAAAMBAJ&pg=PA33 |access-date=2017-01-21 |page=33}}</ref>
<ref name="BW_1991">{{cite news |title=Novell and Digital Research sign definitive merger agreement |date=1991-07-17 |work=[[Business Wire]] |url=http://tech-insider.org/personal-computers/research/1991/0717.html |access-date=2017-01-24 |url-status=live |archive-url=https://web.archive.org/web/20180818133749/https://tech-insider.org/personal-computers/research/1991/0717.html |archive-date=2018-08-18}}</ref>
<ref name="Allchin_1992">{{cite web |title=Novell/Digital Research reach definitive agreement… |author-first=James Edward |author-last=Allchin |author-link=James Edward Allchin |date=1992-05-27 |orig-date=1991-07-17 |type=Court document |id=Plaintiff's exhibit 828, [[Comes v. Microsoft]] |url=http://antitrust.slated.org/www.iowaconsumercase.org/011607/0000/PX00838.pdf |access-date=2017-01-21 |url-status=live |archive-url=https://web.archive.org/web/20161119074834/http://antitrust.slated.org/www.iowaconsumercase.org/011607/0000/PX00838.pdf |archive-date=2016-11-19}}</ref>
<ref name="nytimes rivals boost">{{cite news |url=https://www.nytimes.com/1994/07/24/business/the-executive-computer-microsoft-s-operating-system-rivals-get-a-boost-sort-of.html?scp=1&sq=&pagewanted=2 |title=The Executive Computer; Microsoft's Operating System Rivals Get a Boost, Sort Of |newspaper=[[The New York Times]] |date=1994-07-24 |access-date=2012-03-02 |author-last=Fisher |author-first=Lawrence M. |url-access=limited}}</ref>
<ref name="extremetech msdos 30">{{cite news |url=http://www.extremetech.com/computing/91202-ms-dos-is-30-years-old-today |title=MS-DOS is 30 years old today |work=[[ExtremeTech]] |date=2011-07-27 |access-date=2012-03-02 |author-last=Anthony |author-first=Sebastian}}</ref>
<ref name="nytimes readies response">{{cite news |url=https://www.nytimes.com/1995/09/18/business/novell-readies-a-response-to-windows.html?scp=2&sq=&pagewanted=2 |title=Novell Readies a Response to Windows |newspaper=[[The New York Times]] |date=1995-09-18 |access-date=2012-03-02 |author-last=Fisher |author-first=Lawrence M. |url-access=limited}}</ref> 
<ref name="nytimes big losers">{{cite news |url=https://www.nytimes.com/1994/03/06/business/the-executive-computer-will-users-be-the-big-losers-in-software-patent-battles.html?scp=3&sq=&pagewanted=2 |title=The Executive Computer; Will Users Be the Big Losers in Software Patent Battles? |newspaper=[[The New York Times]] |date=1994-03-06 |access-date=2012-03-02 |author-last=Fisher |author-first=Lawrence M. |url-access=limited}}</ref>
<ref name="Caldera_1996_Suit">{{cite web |title=Software Developer Caldera sues Microsoft for Antitrust practices alleges monopolistic acts shut its DR DOS operating system out of market |work=[[Caldera News]] |date=1996-07-24 |url=http://www.maxframe.com/DR/Info/fullstory/ca_sues_ms.html |access-date=2017-06-24 |url-status=live |archive-url=https://web.archive.org/web/20170624232924/http://www.maxframe.com/DR/Info/fullstory/ca_sues_ms.html |archive-date=2017-06-24}}</ref>
<ref name="Sheesley_2008">{{cite web |title=My DOS version can beat up your DOS version |author-last=Sheesley |author-first=John |work=[[TechRepublic]] |date=2008-04-09 |url=http://www.techrepublic.com/blog/classic-tech/my-dos-version-can-beat-up-your-dos-version/118 |access-date=2012-03-02 |url-status=live |archive-url=https://web.archive.org/web/20191101213823/https://www.techrepublic.com/blog/classics-rock/my-dos-version-can-beat-up-your-dos-version/ |archive-date=2019-11-01}}</ref>
<ref name="Caldera_Fullstory_Tech">{{cite web |title=In the United States District Court - District of Utah, Central Division - Caldera, Inc. vs. Microsoft Corporation - Case No. 2:96CV 0645B - Caldera, Inc.'s Memorandum in opposition to defendant's motion for partial Summary Judgment on plaintiff's "Technological Tying" claim |author-first1=Stephen Daily |author-last1=Susman |author-link1=Stephen Daily Susman |author-first2=Charles R. |author-last2=Eskridge III |author-link2=Charles R. Eskridge III |author-first3=Harry P. |author-last3=Susman |author-first4=James T. |author-last4=Southwick |author-first5=Parker C. |author-last5=Folse III |author-first6=Timothy K. |author-last6=Borchers |author-first7=Ralph H. |author-last7=Palumbo |author-first8=Matthew R.<!-- Matt --> |author-last8=Harris |author-first9=Lynn M. |author-last9=Engel |author-first10=Philip S.<!-- Phil --> |author-last10=McCune |author-first11=Lawrence C. |author-last11=Locker |author-first12=Max D. |author-last12=Wheeler |author-first13=Stephen J. |author-last13=Hill |author-first14=Ryan E. |author-last14=Tibbitts |date=May 1999 |type=Court document |publisher=[[Caldera, Inc.]] |url=http://www.maxframe.com/DR/Info/fullstory/tech.html<!-- http://www.calderathin.com/legal/index.html exact former url not known --> |access-date=2018-08-05 |url-status=live |archive-url=https://web.archive.org/web/20180805142843/http://www.maxframe.com/DR/Info/fullstory/tech.html |archive-date=2018-08-05}}</ref>
<ref name="BBC_CalderaMicrosoft">{{cite web |url=http://news.bbc.co.uk/1/hi/business/600488.stm |title=Caldera vs Microsoft - the settlement |author-first=Graham |author-last=Lea 
|author-link=Graham Lea (journalist) |date=2000-01-13 |work=[[BBC News]] |via=bbc.co.uk |url-status=live |archive-url=https://web.archive.org/web/20170624234406/http://news.bbc.co.uk/2/hi/business/600488.stm |archive-date=2017-06-24}}</ref>
<ref name="Gomes_2000_Settlement">{{cite news |title=Microsoft Will Pay $275 Million To Settle Lawsuit From Caldera |author-first=Lee |author-last=Gomes |date=2000-01-11 |newspaper=[[The Wall Street Journal]] |url=https://www.wsj.com/articles/SB947543007415899052 |url-access=subscription |access-date=2019-11-24 |url-status=live |archive-url=https://web.archive.org/web/20161231130504/http://www.wsj.com/articles/SB947543007415899052 |archive-date=2016-12-31 |quote=[[Microsoft Corp.]] agreed to pay an estimated $275 million to settle an antitrust lawsuit by [[Caldera Inc.]], heading off a trial that was likely to air nasty allegations from a decade ago. […] Microsoft and Caldera, a small Salt Lake City software company that brought the suit in 1996, didn't disclose terms of the settlement. Microsoft, though, said it would take a charge of three cents a share for the agreement in the fiscal third quarter ending March 31 […] the company has roughly 5.5 billion shares outstanding […]}}</ref>
<ref name="Groklaw_2009_NovellWP">{{cite web |title=Exhibits to Microsoft's Cross Motion for Summary Judgment in Novell WordPerfect Case |url=http://www.groklaw.net/article.php?story=20091120165256836 |work=[[Groklaw]] |date=2009-11-23 |access-date=2011-10-22 |url-status=live |archive-url=https://archive.today/20130821080038/http://www.groklaw.net/article.php?story=20091120165256836 |archive-date=2013-08-21 |quote=[…] exhibits attached to Microsoft's Memorandum of Law in support of Microsoft's cross motion for summary judgment in the Novell v. Microsoft antitrust litigation. We finally find out what Microsoft paid [[Caldera, Inc.|Caldera]] to settle the DrDOS litigation back in 2000: $280 million. We even get to read the settlement agreement. It's attached as an exhibit. […] The settlement terms were sealed for all these years, but […] now that mystery is solved. […] We also find out what Caldera/[[Canopy Group|Canopy]] then paid Novell from that $280 million: $35.5 million at first, and then after Novell successfully sued Canopy in 2004, Caldera's successor-in-interest on this matter, an additional $17.7 million, according to page 16 of the Memorandum. Microsoft claims that Novell is not the real party in interest in this antitrust case, and so it can't sue Microsoft for the claims it has lodged against it, because, Microsoft says, Novell sold its antitrust claims to Caldera when it sold it DrDOS. So the exhibits are trying to demonstrate that Novell got paid in full, so to speak, via that earlier litigation. As a result, we get to read a number of documents from the Novell v. Canopy litigation. Novell responds it retained its antitrust claims in the applications market. […]}}</ref>
<ref name="Caldera_Microsoft_2000_Settlement">{{cite web |title=Settlement agreement - Microsoft Corporation and Caldera, Inc. reach agreement to settle antitrust lawsuit |author-first1=Thomas W. |author-last1=Burt |author-first2=Bryan Wayne |author-last2=Sparks |author-link2=Bryan Wayne Sparks |date=2000-01-07 |id=Case 1:05-cv-01087-JFM, Document 104-8, Filed 2009-11-13; NOV00107061-NOV00107071; LT2288-LT2298; Lan12S311263739.1; Exhibit A |type=Faxed court document |url=http://www.groklaw.net/pdf2/NovvMS-104-8.pdf |access-date=2018-08-03 |url-status=live |archive-url=https://web.archive.org/web/20170704220659/http://groklaw.net/pdf2/NovvMS-104-8.pdf |archive-date=2017-07-04 |quote=[…] Microsoft will pay to [[Caldera, Inc.|Caldera]], by wire transfer in accordance with written instructions provided by Caldera, the amount of two hundred eighty million dollars ($280,000,000), as full settlement of all claims or potential claims covered by this agreement […]}} (NB. This document of the ''Caldera v. Microsoft'' case was an exhibit in the ''Novell v. Microsoft'' and ''[[Comes v. Microsoft]]'' cases.)</ref>
<ref name="Microsoft_2009_Memorandum">{{cite web |title=Microsoft's memorandum in opposition to Novell's renewed motion for summary judgement on Microsoft's affirmative defenses and in support of Microsoft's cross-motion for summary judgement |author-first1=Richard J. |author-last1=Wallis |author-first2=Steven J. |author-last2=Aeschbacher |author-first3=Mark M. |author-last3=Bettilyon |author-first4=G. Stewar |author-last4=Webb, Jr. |author-first5=David B. |author-last5=Tulchin |author-first6=Steven L. |author-last6=Holley |date=2009-11-13 |location=United States District Court, District of Maryland |type=Court document |id=Novell, Inc. v. Microsoft Corporation, Civil Action No. JFM-05-1087 |page=16 |url=http://www.groklaw.net/pdf2/NovvMS-104-2.pdf |access-date=2018-08-03 |url-status=live |archive-url=https://web.archive.org/web/20190524154518/http://www.groklaw.net/pdf2/NovvMS-104-2.pdf |archive-date=2019-05-24 |quote=[…] Microsoft paid $280 million to [[Caldera, Inc.|Caldera]] to settle the case, and $35.5 million of the settlement proceeds were provided by Caldera to Novell as a so-called "royalty." […] Dissatisfied with that amount, Novell filed suit in June 2000 against Caldera (succeeded by [[The Canopy Group]]), alleging that Novell was entitled to even more. […] Novell ultimately prevailed, adding $17.7 million to its share of the monies paid by Microsoft to Caldera, for a total of more than $53 million […]}}</ref>
<ref name="Caldera_1996_UK">{{cite web |publisher=Company Data Rex |title=Basic information about company "Caldera (UK) Limited" |id=Company Number 03252883 |date=2001-07-01 |url=http://www.cdrex.com/caldera-uk-limited-1134037.html |access-date=2017-06-24 |url-status=dead |archive-url=https://web.archive.org/web/20170624232240/http://www.cdrex.com/caldera-uk-limited-1134037.html |archive-date=2017-06-24}}</ref>
<ref name="Cebit_1998_Winglue">{{cite web |title=Cebit: Caldera shows Windows on DR-DOS, denying MS claims |author-first=Graham |author-last=Lea |author-link=Graham Lea (journalist) |date=1998-03-23 |department=[[CeBIT]] news |location=Hanover, Germany |url=http://www.v3.co.uk/v3-uk/news/1996865/cebit-caldera-windows-dr-dos-denying-ms-claims |access-date=2009-06-01 |url-status=dead |archive-url=https://web.archive.org/web/20170624231328/https://www.v3.co.uk/v3-uk/news/1996865/cebit-caldera-windows-dr-dos-denying-ms-claims |archive-date=2017-06-24}}</ref>
<ref name="Romano_1998_Winbolt">{{cite journal |author-first=Mike |author-last=Romano |title=The mouse that roared. Forget the feds. It's up to an obscure Utah company to prove what we already know: that Microsoft is a monopoly. |journal=[[Seattle Weekly]] |date=1998-09-17 |orig-date=1998-09-16 |url=http://www.seattleweekly.com/1998-09-16/news/the-mouse-that-roared/ |access-date=2017-06-24 |url-status=dead |archive-url=https://web.archive.org/web/20170624231746/http://archive.seattleweekly.com/1998-09-16/news/the-mouse-that-roared/ |archive-date=2017-06-24 |quote=Furthermore, Caldera claims that Microsoft's flagship product, [[Windows 95]], is nothing more than an "[[artificial tie]]" between its MS-DOS operating system and [[Microsoft Windows|Windows]] graphic interface with no business justification other than to keep competing underlying operating systems—like Caldera's DR-DOS—off the market. To prove its point, Caldera will soon release a piece of demonstration software called "[[WinBolt]]," which, it says, will allow users to install the Windows 95 interface atop DR-DOS. The demo will show, Caldera says, that there is no significant technological advancement, or justified business efficiency, to the combination of MS-DOS with Windows in Windows 95.}} [https://web.archive.org/web/20010211085804/http://www.seattleweekly.com/features/9837/features-romano.shtml]</ref>
<ref name="Paul_2002_RMD">{{cite web |title=[fd-dev] HMA access from TSR |author-first=Matthias R. |author-last=Paul |date=2002-04-10 |work=freedos-dev |url=https://marc.info/?l=freedos-dev&m=101846072627263&w=4 |access-date=2017-09-09 |url-status=live |archive-url=https://archive.today/20170909125117/https://marc.info/?l=freedos-dev&m=101846072627263&w=4 |archive-date=2017-09-09 |quote=[…] [[MS-DOS 7.0]]+ […] introduced a […] for the most part undocumented RMD data structure usually located in the [[High memory area|HMA]]. The kernel collects and records configuration and Real Mode Driver data during boot (type of driver, interrupts hooked by driver, [[CONFIG.SYS]] line of invocation, etc.) and stores this information in a […] complicated […] growing data structure. Presumably […] meant to be used by the Windows core to get a better picture of the loaded Real Mode drivers […] or even attempt to unhook or unload some of them, […] it is only used to a very limited extent ([…] some of the info reflected in the log files created on […] startup, and some parts of the […] configuration manager also make use of it), […] leaving room […] beyond the technical side […] because nothing of the interesting stuff is documented […]}}</ref>
<ref name="Paul_2002_HMA7">{{cite newsgroup |title=Suche freien Speicherbereich unterhalb von 1 MB, der nicht von OS überschrieben wird |author-first=Matthias R. |author-last=Paul |date=2002-08-13 |newsgroup=de.comp.lang.assembler.x86 |language=de |url=https://groups.google.com/d/msg/de.comp.lang.assembler.x86/boKnIpqPl-Q/ZLDFDX9E1e0J |access-date=2017-09-03 |url-status=live |archive-url=https://archive.today/20170904001428/https://groups.google.com/forum/%23!msg/de.comp.lang.assembler.x86/boKnIpqPl-Q/ZLDFDX9E1e0J |archive-date=2017-09-04}}</ref>
<ref name="Paul_2002_W4">{{cite newsgroup |title=Will Windows 3.1 work with DR-DOS 7.03? |author-first=Matthias R. |author-last=Paul |date=2002-07-25 |newsgroup=alt.os.free-dos |url=https://groups.google.com/d/msg/alt.os.free-dos/Cmyxty6vj-A/--5cpmEGDngJ |access-date=2018-05-09 |quote=[…] DR-DOS 7.03 is compatible with Windows and [[Windows for Workgroups]] up to 3.xx (and internal versions of DR-DOS even with Windows 4.xx aka Windows 95/98/[[Windows 98 SE|SE]] […]}}</ref>
<ref name="Paul_1997_NWDOSTIP">{{cite book |title=NWDOS-TIPs &mdash; Tips & Tricks rund um Novell DOS 7, mit Blick auf undokumentierte Details, Bugs und Workarounds |department=MPDOSTIP |author-first=Matthias R. |author-last=Paul |date=1997-07-30 |orig-date=1994-05-01 |edition=3 |version=Release 157 |language=de |url=http://www.antonis.de/dos/dos-tuts/mpdostip/html/nwdostip.htm |access-date=2014-08-06 |url-status=live |archive-url=https://web.archive.org/web/20170910194752/http://www.antonis.de/dos/dos-tuts/mpdostip/html/nwdostip.htm |archive-date=2017-09-10}} (NB. NWDOSTIP.TXT is a comprehensive work on Novell DOS 7 and OpenDOS 7.01, including the description of many undocumented features and internals. It is part of the author's yet larger <code>MPDOSTIP.ZIP</code><!-- still named TIPS_MP.ZIP between 1991 and 1996-11 --> collection maintained up to 2001 and distributed on many sites at the time. The provided link points to a HTML-converted older version of the <code>NWDOSTIP.TXT</code> file.) [https://web.archive.org/web/20190601152204/https://www.sac.sk/download/text/mpdostip.zip<!-- A yet older version 155 from 1997-05-13 of the 1997-07-15 distribution archive. -->]</ref>
<ref name="Paul_1997_OD-A3">{{cite web |author-first=Matthias R. |author-last=Paul |title=Caldera OpenDOS 7.01/7.02 Update Alpha 3 IBMBIO.COM README.TXT |url=http://www.uni-bonn.de/~uzs180/download/ibmbioa3.zip |date=1997-10-02 |access-date=2009-03-29 |url-status=dead |archive-url=https://web.archive.org/web/20031004074600/http://www-student.informatik.uni-bonn.de/~frinke/ibmbioa3.zip |archive-date=2003-10-04}} [https://web.archive.org/web/20181225154705/http://mirror.macintosharchive.org/max1zzz.co.uk/+Windows%20&%20DOS/DOS/System/Novell/Support/Bins/Op702src.zip<!-- Op702src.zip is an unofficial renamed distribution of the ibmbioa3.zip file -->]</ref>
<ref name="Brown_RBIL">[[Ralf D. Brown]]. ''[[Ralf Brown's Interrupt List]]'', INTER61 as of 2000-07-16 ([https://www.cs.cmu.edu/~ralf/files.html]), entry for DR-DOS version check under INT 21h/AH=4452h.</ref>
<ref name="4DOS_8.00_HELP">{{cite book |title=4DOS 8.00 online help |title-link=4DOS 8.00 |author-first1=Hardin |author-last1=Brothers |author-first2=Tom |author-last2=Rawson |author-link2=Tom Rawson |author-first3=Rex C. |author-last3=Conn |author-link3=Rex C. Conn |author-first4=Matthias R. |author-last4=Paul |author-first5=Charles E. |author-last5=Dye |author-first6=Luchezar I. |author-last6=Georgiev |date=2002-02-27}}</ref>
<ref name="Paul_2000_Enhancements">{{cite web |title=Possible DR-DOS enhancements<!-- [Was: Re: SCI-Tech Display Drivers] --> |author-first=Matthias R. |author-last=Paul |date=2000-01-11 |work=www.delorie.com/opendos |url=http://www.delorie.com/opendos/archives/browse.cgi?p=opendos/2000/01/11/12:39:07 |access-date=2019-04-20 |url-status=live |archive-url=https://web.archive.org/web/20190420091325/http://www.delorie.com/opendos/archives/browse.cgi?p=opendos%2F2000%2F01%2F11%2F12%3A39%3A07 |archive-date=2019-04-20}}</ref>
<ref name="Paul_2001_COUNTRY">{{cite web |title=DOS COUNTRY.SYS file format |type=COUNTRY.LST file |author-first=Matthias R. |author-last=Paul |date=2001-06-10 |edition=1.44 |orig-date=1995 |url=http://www.columbia.edu/~em36/wpdos/MatthiasPaulCPI.zip<!-- not an official distribution archive, but contains an older version of COUNTRY.LST --> |access-date=2016-08-20 |url-status=live |archive-url=https://web.archive.org/web/20160420065252/http://www.columbia.edu/~em36/wpdos/MatthiasPaulCPI.zip |archive-date=2016-04-20}}</ref>
<ref name="Paul_2001_CPI">{{cite web |title=Format description of DOS, OS/2, and Windows NT .CPI, and Linux .CP files |type=CPI.LST file |author-first=Matthias R. |author-last=Paul |date=2001-06-10 |edition=1.30 |orig-date=1995 |url=http://www.columbia.edu/~em36/wpdos/MatthiasPaulCPI.zip<!-- not an official distribution archive, but contains an older version of CPI.LST --> |access-date=2016-08-20 |url-status=live |archive-url=https://web.archive.org/web/20160420065252/http://www.columbia.edu/~em36/wpdos/MatthiasPaulCPI.zip |archive-date=2016-04-20}}</ref>
<ref name="Paul_2001_CODEPAGE">{{cite web |title=Overview on DOS, OS/2, and Windows codepages |type=CODEPAGE.LST file |author-first=Matthias R. |author-last=Paul |date=2001-06-10 |edition=1.59 preliminary |orig-date=1995 |url=http://www.columbia.edu/~em36/wpdos/MatthiasPaulCPI.zip<!-- not an official distribution archive, but contains an older preliminary version of CODEPAGE.LST --> |access-date=2016-08-20 |url-status=live |archive-url=https://web.archive.org/web/20160420065252/http://www.columbia.edu/~em36/wpdos/MatthiasPaulCPI.zip |archive-date=2016-04-20}}</ref>
<ref name="Paul_2003_IBMBIO85_108">{{cite newsgroup |title=drdos + qemm = problems |author-first=Matthias R. |author-last=Paul |date=2003-01-06 |orig-date=2003-01-04, 1997 |version=1.08 |newsgroup=comp.os.msdos.misc |url=https://groups.google.com/d/msg/comp.os.msdos.misc/_fX3MxLub9Y/VW_O_2fvlt0J |access-date=2018-05-11 |quote=[…] DR-DOS 7.06 up to 1999-12-14 […] -->}}</ref>
<ref name="Paul_2001_IBMBIO85_106">{{cite newsgroup |title=QEMM 8.xx and Linux |author-first=Matthias R. |author-last=Paul |date=2001-11-28 |orig-date=1997 |version=1.06 |newsgroup=comp.os.msdos.desqview |url=https://groups.google.com/d/msg/comp.os.msdos.desqview/M5dB_Ohs1Lo/swKOOswhwhEJ |access-date=2018-05-11 |quote=[…] DR-DOS 7.04/7.05 (1999-08-19) […] -->}}</ref>
<ref name="Paul_2001_IBMBIO85">{{cite web |title=QEMM OPTIMIZE and DR-DOS |author-first=Matthias R. |author-last=Paul |date=2001-11-05 |work=OpenDOS |url=http://www.delorie.com/opendos//archives/browse.cgi?p=opendos/2001/11/05/10:09:45 |access-date=2018-05-11 |url-status=live |archive-url=https://web.archive.org/web/20180511111713/http://www.delorie.com/opendos//archives/browse.cgi?p=opendos%2F2001%2F11%2F05%2F10%3A09%3A45 |archive-date=2018-05-11 |quote=[…] FILES+FCBS […] are now grouped in 3 chunks while they were arranged in 2 chunks previously […] [[QEMM]]'s DOS-UP feature does not expect this […] This results in ca. 1&nbsp;Kb less conventional memory than the theoretical possible maximum under QEMM […] I once wrote a patch (a DEBUG script named IBMBIO85.SCR […]) […] which will reenable the old handle memory layout. This will free even more conventional memory under DR-DOS, but causes serious compatibility problems with Windows 3.xx when the [[FILESHIGH (CONFIG.SYS directive)|FILESHIGH=]], [[FCBSHIGH (CONFIG.SYS directive)|FCBSHIGH=]], or [[DOS (CONFIG.SYS directive)|DOS=]]AUTO directives are used […] because it will leave only 5 handles in low memory in contrast to the 8 handles that are required for Windows to work properly due to an extremely dangerous hack on Microsoft's side to determine the size of the […] SFT structures (this is known as "CON CON CON CON CON" hack, because Windows opens CON five times and […] scans the first 512&nbsp;Kb of memory for the "CON" string to measure the displacement […] something that could be easily fooled by just placing some "CON" strings in the […] memory image with incorrect offsets from each other […]}}</ref>
<ref name="Jones_2004">{{cite web |author-first=Pamela |author-last=Jones |author-link=Pamela Jones |title=Caldera, Inc./Caldera Systems, Inc. 1998 Asset Purchase and Sale Agreement |publisher=[[Groklaw]] |date=2004-02-29 |url=http://www.groklaw.net/articlebasic.php?story=20040229023446199 |access-date=2017-05-25 |url-status=live |archive-url=https://web.archive.org/web/20170625191938/http://www.groklaw.net/articlebasic.php?story=20040229023446199 |archive-date=2017-06-25}}</ref>
<ref name="Caldera_1998_Subsidiaries">{{cite web |author=Caldera |author-link=Caldera (company) |title=Caldera Creates Two {{sic|hide=y|Wholly|-}}Owned Subsidiaries |type=Press-release |date=1998-09-02 |publisher=[[PRNewswire]] |url=http://www.prnewswire.co.uk/cgi/news/release?id=15948 |access-date=2017-06-24 |url-status=live |archive-url=https://web.archive.org/web/20170624234105/http://www.prnewswire.co.uk/news-releases/caldera-creates-two-wholly-owned-subsidiaries-156626585.html |archive-date=2017-06-24}}</ref>
<ref name="Paul_2002_OEM">{{cite newsgroup |title=Need DOS 6.22 (Not OEM) |author-first=Matthias R. |author-last=Paul |date=2002-02-20 |newsgroup=alt.msdos.programmer |url=https://groups.google.com/d/msg/alt.msdos.programmer/MAv9LuYQjs8/HuYCph4KsQYJ |access-date=2006-10-14 |url-status=live |archive-url=https://archive.today/20170909145248/https://groups.google.com/forum/%23!msg/alt.msdos.programmer/MAv9LuYQjs8/HuYCph4KsQYJ |archive-date=2017-09-09}}</ref>
<ref name="Paul_2004_OEM">{{cite web |title=NOVOLTRK.REG |author-first=Matthias R. |author-last=Paul |date=2004-08-25 |website=www.drdos.org |url=http://www.ibiblio.org/pub/micro/pc-stuff/freedos/win9x/NOVOLTRK.ZIP |access-date=2011-12-17 |url-status=dead |archive-url=https://web.archive.org/web/20160304124755/http://www.ibiblio.org/pub/micro/pc-stuff/freedos/win9x/NOVOLTRK.ZIP |archive-date=2016-03-04}} [https://web.archive.org/web/20051111015142/http://public.www.planetmirror.com/pub/freedos/win9x/]</ref>
<ref name="History">{{Cite web |url=http://www.freedos.org/freedos/news/press/2000-drdos-hist.txt |title=Archived copy |access-date=2008-08-02 |archive-url=https://web.archive.org/web/20161125115620/http://www.freedos.org/technotes/press/2000-drdos-hist.txt |archive-date=2016-11-25 |url-status=dead}}</ref>
<ref name="Caldera_1999_Lineo">{{cite web |author=Caldera, Inc. |author-link=Caldera (company) |title=((Embedded Linux moved to top priority at Lineo, Inc. formerly known as Caldera Thin Clients, Inc.)) |type=press-release |date=1999-07-20 |url=http://www.maxframe.com/DR/Info/fullstory/lineoprl.html |access-date=2017-06-24 |url-status=live |archive-url=https://web.archive.org/web/20170625000805/http://www.maxframe.com/DR/Info/fullstory/lineoprl.html |archive-date=2017-06-25}}</ref>
<ref name="Moriy_autoexec">http://drdos.moriy.com/files/autoexec.gif{{Dead link|date=November 2019 |bot=InternetArchiveBot |fix-attempted=yes}}</ref>
<ref name="moriy_config">http://drdos.moriy.com/files/configsys.gif{{Dead link|date=November 2019 |bot=InternetArchiveBot |fix-attempted=yes}}</ref>
<ref name="reimagery">{{Cite web |url=http://reimagery.com/fsfd/os.htm#drdos45 |title=FREE SOFTWARE FOR DOS — Operating Systems |access-date=2009-09-08  |archive-date=2009-11-04  |archive-url=https://web.archive.org/web/20091104093748/http://reimagery.com/fsfd/os.htm#drdos45 |url-status=dead }}</ref>
<ref name="freedos">{{Cite web |url=http://www.freedos.org/freedos/news/press/2005-drdos.txt |title=Archived copy |access-date=2008-06-14 |archive-url=https://web.archive.org/web/20100626202749/http://www.freedos.org/freedos/news/press/2005-drdos.txt |archive-date=2010-06-26 |url-status=dead}}</ref>
<ref name="Buyout">{{cite web |title=DR DOS Buy Out |work=DRDOS Embedded DOS |publisher=[[DRDOS, Inc.]] |date=2013 |url=http://drdos.com/products/dr-dos/dr-dos-buy-out/ |url-status=usurped |archive-url=https://web.archive.org/web/20180603094951/http://drdos.com/products/dr-dos/dr-dos-buy-out/ |archive-date=2018-06-03}}</ref>
<ref name="EDR">[https://web.archive.org/web/20160706205139/http://www.drdosprojects.de/ Welcome to the DR-DOS/OpenDOS Enhancement Project!]</ref>
<ref name="ct_2000">{{cite journal |title=Notaufnahme - Alle Daten futsch - was nun? |author-first1=Oliver |author-last1=Diedrich |author-first2=Christian |author-last2=Rabanus |date=2000-03-11 |language=de |journal=[[c't - magazin für computertechnik]] |publisher=[[Heise Verlag]] |issue=6 |volume=2000 |pages=106+ |url=https://www.heise.de/ct/artikel/Notaufnahme-287594.html<!-- http://www.heise.de:80/ct/00/06/106/default.shtml --> |access-date=2018-05-13 |url-status=live |archive-url=https://web.archive.org/web/20180513192906/https://www.heise.de/ct/artikel/Notaufnahme-287594.html<!-- https://web.archive.org/web/20070922063358/http://www.heise.de:80/ct/00/06/106/default.shtml --> |archive-date=2018-05-13}}</ref>
<ref name="Lea_1998_Satellite">{{cite web |title=Caldera's DR gets OnSatellite of love - Service to offer voice, email and smartie cards |author-first=Graham |author-last=Lea |author-link=Graham Lea (journalist) |date=1998-09-28 |website=[[The Register]] |url=https://www.theregister.co.uk/1998/09/28/caldera_s_dr_gets_onsatellite/ |access-date=2018-02-13 |url-status=live |archive-url=https://web.archive.org/web/20180822214838/https://www.theregister.co.uk/1998/09/28/caldera_s_dr_gets_onsatellite/ |archive-date=2018-08-22}}</ref>
<ref name="Caldera_1996_OpenSource">{{cite web |title=Caldera announces open source code model for DOS - DR DOS + the Internet = Caldera OpenDOS |editor-first1=Lyle |editor-last1=Ball |editor-link1=Lyle Ball |editor-first2=Nancy |editor-last2=Pomeroy |date=1996-09-10 |publisher=[[Caldera, Inc.]] |location=Provo, UT, USA |url=http://caldera.com:80/news/pr002.html |url-status=dead |archive-url=https://web.archive.org/web/19961018220910/http://caldera.com/news/pr002.html |archive-date=1996-10-18 |access-date=2019-07-14 |quote=Caldera […] will openly distribute the source code for DOS via the Internet as part of the company's plans to encourage continued development of DOS technologies and applications, further leveling the playing field for software developers worldwide. This effort, targeted to benefit both individual developers and industry partners, follows Caldera's commitment to embrace and fund an open software environment. Caldera also announced plans for internal development and marketing of DOS, including a new product called Caldera OpenDOS. […] Caldera plans to openly distribute the source code for all of the DOS technologies it acquired from Novell […] including CP/M, DR&nbsp;DOS, PalmDOS, Multi-User DOS and Novell DOS 7. Pending an evaluation and organization of the […] technologies, the source code will be made available from Caldera's web site during Q1 1997 […] Individuals can use OpenDOS source for personal use at no cost. Individuals and organizations desiring to commercially redistribute Caldera OpenDOS must acquire a license with an associated small fee. Source code for proprietary third-party components of Novell DOS 7 will not be published. […]}}</ref>
<ref name="OnTrack_1999_ER">{{cite web |title=EasyRecovery - Sophisticated Data Recovery |publisher=[[Ontrack Data International, Inc.]] |date=1999 |url=http://mirror.macintosharchive.org/max1zzz.co.uk/+Windows%20&%20DOS/DOS/System/Novell/Support/Bins/er32fre..txt |access-date=2018-08-26 |url-status=dead |archive-url=https://web.archive.org/web/20180826005202/http://mirror.macintosharchive.org/max1zzz.co.uk/+Windows%20%26%20DOS/DOS/System/Novell/Support/Bins/er32fre..txt |archive-date=2018-08-26}} [https://web.archive.org/web/20180826005120/http://mirror.macintosharchive.org/max1zzz.co.uk/+Windows%20%26%20DOS/DOS/System/Novell/Support/Bins/er32fre.exe]</ref>
<ref name="Lea_1999_UK">{{cite web |author-first=Graham |author-last=Lea |author-link=Graham Lea (journalist) |title=Caldera closes UK thin client development unit - Development being moved over to Utah |website=[[The Register]] |date=1999-04-27 |url=https://www.theregister.co.uk/1999/04/27/caldera_closes_uk_thin_client/ |access-date=2017-06-24 |url-status=live |archive-url=https://web.archive.org/web/20170625000425/https://www.theregister.co.uk/1999/04/27/caldera_closes_uk_thin_client/ |archive-date=2017-06-25}}</ref>
<ref name="Caldera_1998_Doctor">{{cite web |title=The Doctor Is Back! |date=February 1998 |publisher=Caldera |url=http://www.caldera.com/dos/ |url-status=dead |archive-url=https://web.archive.org/web/19980205073857/http://www.caldera.com/dos/ |archive-date=1998-02-05}}</ref>
<ref name="ASW_1994_Novell_DOS_7">{{cite journal |title=Novell: Power-Marketing I - Dosis gegen den Marktfuehrer |language=de |trans-title=Novell: Power marketing I - dosis against the market leader |journal=Absatzwirtschaft |number=4 |date=1994-04-01 |page=8 |series=Neue Marktauftritte |url=http://printarchiv.absatzwirtschaft.de/Content/_p=1004040,an=049401003,049401003;printpage |access-date=2018-09-02 |url-status=live |archive-url=https://web.archive.org/web/20180902152839/http://printarchiv.absatzwirtschaft.de/Content/_p=1004040,an=049401003,049401003;printpage |archive-date=2018-09-02}}</ref>
<ref name="Hill_1994_Interview">{{cite journal 
|author-first=Jürgen |author-last=Hill |title=Microsoft wird mehr Wind von vorne bekommen |language=de |date=1994-05-27 |journal=[[Computerwoche]] |url=https://www.computerwoche.de/a/microsoft-wird-mehr-wind-von-vorne-bekommen,1121624 |access-date=2018-09-02 |url-status=live |archive-url=https://web.archive.org/web/20180902160333/https://www.computerwoche.de/a/microsoft-wird-mehr-wind-von-vorne-bekommen,1121624 |archive-date=2018-09-02}}</ref>
<ref name="Digital_Research_1990_We_Make_Computers_Work">{{cite web |title=Digital Research - We Make Computers Work |id=Serial Number 74087063 |date=1992-11-13 |orig-date=1990-08-13 |url=https://trademarks.justia.com/740/87/digital-research-we-make-computers-work-74087063.html |access-date=2018-09-02 |url-status=live |archive-url=https://web.archive.org/web/20180902151236/https://trademarks.justia.com/740/87/digital-research-we-make-computers-work-74087063.html |archive-date=2018-09-02}}</ref>
<ref name="Goodman_1994">{{cite journal |title=Novell ups the ante for DOS functionality - But long-awaited revamp of DR DOS is slightly unstable, and some utilities lack finish |author-first=John M. |author-last=Goodman |journal=[[InfoWorld]] |date=1994-05-02 |pages=107–110 |url=https://books.google.com/books?id=hDgEAAAAMBAJ&pg=PA107}}</ref>
<ref name="Elliott_2013_ViewMAX1">{{cite web |title=ViewMAX/1 screenshots |author-first=John C. |author-last=Elliott |work=Seasip.info |url=http://www.seasip.info/Gem/History/viewmax1.html |date=2013 |access-date=2018-09-10 |url-status=live |archive-url=https://archive.today/20130111211126/http://www.seasip.info/Gem/History/viewmax1.html |archive-date=2013-01-11}}</ref>
<ref name="Elliott_2013_ViewMAX2">{{cite web |title=ViewMAX/2 screenshots |author-first=John C. |author-last=Elliott |work=Seasip.info |url=http://www.seasip.info/Gem/History/viewmax2.html |date=2013 |access-date=2018-09-10 |url-status=live |archive-url=https://archive.today/20180911232803/http://www.seasip.info/Gem/History/viewmax2.html |archive-date=2018-09-11}}</ref>
<ref name="Paul_2000_History">{{cite web |title=25 years of DR DOS history - Digital Research DOS history |author-first=Matthias R. |author-last=Paul |date=2000-09-18 |website=FreeDOS.org |url=http://www.freedos.org/freedos/news/press/2000-drdos-hist.txt |access-date=2013-10-05 |url-status=dead |archive-url=https://web.archive.org/web/20161125115620/http://www.freedos.org/technotes/press/2000-drdos-hist.txt |archive-date=2016-11-25 |quote=See footnote #19 (BDOS 1067h "[[DR&nbsp;DOS 6.0]] Windows 3.1 update, April 1992"; 1992-03, 1992-04-07: "This public DR&nbsp;DOS 6.0 update only includes patches addressing full Windows 3.1 compatibility. There should have been a full "business update" for registered users, shipping a little bit later."), #27 (BDOS 1072h "Novell DOS 7 Panther/Smirnoff BETA 3", 1993-09: "This issue does not have workarounds for Windows 3.1 AARD code."), #29 (BDOS 1072h "Novell DOS 7 German release"; 1994-02-22: "This issue is known to have workarounds for Windows 3.1 AARD code. This should also apply to the earlier English issue.")}}</ref>
<ref name="Schulman_1994_Undocumented-DOS">{{cite book |author-first1=Andrew |author-last1=Schulman |author-first2=Ralf D. |author-last2=Brown |author-link2=Ralf D. Brown |author-first3=David |author-last3=Maxey |author-first4=Raymond J. |author-last4=Michels |author-first5=Jim |author-last5=Kyle |title=Undocumented DOS: A programmer's guide to reserved MS-DOS functions and data structures - expanded to include MS-DOS 6, Novell DOS and Windows 3.1 |publisher=[[Addison Wesley]] |edition=2 |date=1994 |orig-date=November 1993<!-- first printing --> |isbn=0-201-63287-X |location=Reading, Massachusetts |url-access=registration |url=https://archive.org/details/undocumenteddosp00andr_0}} (xviii+856+vi pages, 3.5-inch floppy) Errata: [https://web.archive.org/web/20190417215556/https://www.cs.cmu.edu/afs/cs/user/ralf/pub/books/UndocumentedDOS/errata.ud2][https://web.archive.org/web/20190417212906/https://www.pcjs.org/pubs/pc/programming/Undocumented_DOS/#errata-2nd-edition]</ref>
<ref name="Caldera_1999_Statement_of_facts">{{cite web |title=In the United States District Court - District of Utah, Central Division - Caldera, Inc. vs. Microsoft Corporation - Consolidated statement of facts in support of its responses to motions for summary judgement by Microsoft Corporation - Case No. 2:96CV 0645B |author-first1=Stephen Daily |author-last1=Susman |author-link1=Stephen Daily Susman |author-first2=Charles R. |author-last2=Eskridge III |author-link2=Charles R. Eskridge III |author-first3=James T. |author-last3=Southwick |author-first4=Harry P. |author-last4=Susman |author-first5=Parker C. |author-last5=Folse III |author-first6=Ralph H. |author-last6=Palumbo |author-first7=Matthew R.<!-- Matt --> |author-last7=Harris |author-first8=Philip S.<!-- Phil --> |author-last8=McCune |author-first9=Lynn M. |author-last9=Engel |author-first10=Stephen J. |author-last10=Hill |author-first11=Ryan E. |author-last11=Tibbitts |date=April 1999 |type=Court document |publisher=Caldera, Inc. |url=http://www.maxframe.com/DR/Info/fullstory/factstat.html<!-- http://www.calderathin.com/legal/index.html exact former link not known --> |access-date=2018-08-05 |url-status=live |archive-url=https://web.archive.org/web/20180805184350/http://www.maxframe.com/DR/Info/fullstory/factstat.html |archive-date=2018-08-05}}</ref>
<ref name="Caldera_1998_NEW703">{{cite book |title=DR-DOS 7.03 WHATSNEW.TXT - Changes from DR-DOS 7.02 to DR-DOS 7.03 |publisher=Caldera, Inc. |date=1998-12-24 |url=http://www.lookas.net/ftp/incoming/darbui/Justas/DRDOS/WHATSNEW.TXT |access-date=2019-04-08 |url-status=dead |archive-url=https://web.archive.org/web/20190408142232/http://www.lookas.net/ftp/incoming/darbui/Justas/DRDOS/WHATSNEW.TXT |archive-date=2019-04-08}} (NB. The file states these changes were introduced with DR-DOS 7.03, however, many of them became actually available with updated 7.02 revisions already.)</ref>
<ref name="Paul_2004_YESCHAR">{{cite web |title=Re: Random Lockups with DR-DOS 7.03 |date=2004-06-17 |author-first=Matthias R. |author-last=Paul |work=opendos@delorie.com; [[FidoNet]] conference: ALT_DOS |number=1 |url=https://fidonet.ozzmosis.com/echomail.php/alt_dos/7e55a758c10339d0.html |access-date=2019-04-28 |url-status=dead |archive-url=https://archive.today/20190428181923/https://fidonet.ozzmosis.com/echomail.php/alt_dos/7e55a758c10339d0.html |archive-date=2019-04-28}} [https://archive.today/20190501023752/http://www.delorie.com/opendos/archives/browse.cgi?p=opendos/2004/06/17/07:47:11.1][https://archive.today/20190428182007/http://www.fybertech.com/misc/qwkview/qwkview.pl?conf=3010]</ref>
<ref name="Paul_2004_CHAIN">{{cite web |title=Re: Random Lockups with DR-DOS 7.03 |date=2004-06-17 |number=2 |author-first=Matthias R. |author-last=Paul |work=opendos@delorie.com; [[FidoNet]] conference: ALT_DOS |url=https://fidonet.ozzmosis.com/echomail.php/alt_dos/f2b6d63fc10339d0.html |access-date=2019-04-28 |url-status=dead |archive-url=https://archive.today/20190428181843/https://fidonet.ozzmosis.com/echomail.php/alt_dos/f2b6d63fc10339d0.html |archive-date=2019-04-28}} [https://archive.today/20190501023518/http://www.delorie.com/opendos/archives/browse.cgi?p=opendos/2004/06/17/07:47:11][https://archive.today/20190428182007/http://www.fybertech.com/misc/qwkview/qwkview.pl?conf=3010]</ref>
<ref name="Paul_2004_COMMAND">{{cite web |title=Re: Random Lockups with DR-DOS 7.03 |date=2004-06-17 |number=3 |author-first=Matthias R. |author-last=Paul |work=opendos@delorie.com; FidoNet conference: ALT_DOS |url=https://fidonet.ozzmosis.com/echomail.php/alt_dos/e812a919c10339d0.html |access-date=2019-04-28 |url-status=dead |archive-url=https://archive.today/20190428181749/https://fidonet.ozzmosis.com/echomail.php/alt_dos/e812a919c10339d0.html |archive-date=2019-04-28}} [https://archive.today/20190501023329/http://www.delorie.com/opendos/archives/browse.cgi?p=opendos/2004/06/17/06:23:16][https://archive.today/20190428182007/http://www.fybertech.com/misc/qwkview/qwkview.pl?conf=3010]</ref>
<ref name="Paul_2000_CONFIG">{{cite web |title=Optimizing CONFIG.SYS… |date=2000-11-22 |author-first=Matthias R. |author-last=Paul |work=opendos@delorie.com |url=http://www.delorie.com/opendos/archives/browse.cgi?p=opendos/2000/11/22/11:09:09 |access-date=2019-05-06 |url-status=live |archive-url=https://archive.today/20190506023131/http://www.delorie.com/opendos/archives/browse.cgi?p=opendos/2000/11/22/11:09:09 |archive-date=2019-05-06}}</ref>
<ref name="Perkel_1991_NovOS">{{cite web |title=Digital Research - The Untold Story |author-first=Marc |author-last=Perkel |author-link=Marc Perkel |date=1996-10-18 |orig-date=1991-03-20, 1991-05-23, 1991-07-21, 1991-07-24, 1991-08-02 |url=http://www.ctyme.com/dri.htm |access-date=2019-04-19 |url-status=live |archive-url=https://web.archive.org/web/20190419190806/http://www.ctyme.com/dri.htm |archive-date=2019-04-19}} [https://web.archive.org/web/20190419191036/http://www.ctyme.com/dri1.htm][https://web.archive.org/web/20190419191113/http://www.ctyme.com/dri2.htm<!-- 1991-02-16, 1991-02-18, 1991-03-04 -->][https://web.archive.org/web/20190419144412/http://www.ctyme.com/dri3.htm<!-- 1991-03-20, 1991-05-23, 1991-07-24, 1991-08-02 -->]</ref>
<ref name="Richardson_1999_Ball">{{cite magazine |title=Interview: Lyle Ball, Lineo |editor-first=Marjorie "Margie" |editor-last=Richardson |author-first=Lyle |author-last=Ball |author-link=Lyle Ball |date=1999-10-01 |orig-date=1999-08-04 |magazine=[[Linux Journal]] |url=https://www.linuxjournal.com/article/3656 |access-date=2019-06-01 |url-status=live |archive-url=https://web.archive.org/web/20171213160947/https://www.linuxjournal.com/article/3656 |archive-date=2017-12-13 |quote=[…] We […] have very deep experience with embedding DR&nbsp;DOS, and we've been making millions from that. So we are in a unique position: we are not a startup and we have funding. Our DOS product paid for all our [[R&D]] on embedded [[Linux]]. […] we are […] evolving our focus from an embedded DOS-only company to an [[embedded Linux]] company. […] We are not killing our DOS product immediately; […] the market is not killing our DOS product. There is still a high demand for embedded DOS, and we will continue to sell and market it. However, there has been an increasing demand for embedded Linux. So we are shifting our focus and renaming the company to match our longer-term revenue stream, which will be Linux-based […] as the market has requested us to do […] We will keep selling both technologies during the transition. […] we spoke to our OEM companies—not just in the U.S., but around Europe and Asia—they were interested in our DOS solution and they would […] like to switch to Linux […]}}</ref>
<ref name="CW_1992">{{cite magazine |title=DR DOS 6.0 does Windows 3.1 |date=1992-04-20 |magazine=[[Computerworld]] |series=News Shorts |page=6 |url=https://books.google.com/books?id=w1yCn870hscC&pg=PA6 |access-date=2019-07-22 |url-status=live |archive-url=https://archive.today/20190722175928/https://books.google.nl/books?id=w1yCn870hscC&pg=PA6&lpg=PA6&redir_esc=y%23v=onepage&q&f=false |archive-date=2019-07-22}}</ref>
<ref name="Dryfoos_1991_DOS5">{{cite web |title=MS-DOS 5.0 Development Post-Mortem Report |date=1991-09-18 |orig-date=1991-07-19 |editor-first=Mike |editor-last=Dryfoos |publisher=[[Microsoft]] |type=mail as court document |id=MS-PCA1179169 (MS-PCA1179159-MS-PCA1179191). MS7020988 (MS7020978-MS7021010). Depo. Ex. 1109. [[Comes v Microsoft]] Plaintiff's Exhibit 3473. C<!-- or O? -->A.No.2:96CV645B<!-- or E? --> Plaintiff's Exhibit 477. |page=10 |url=http://www.windowswiki.info/wp-content/uploads/codenames/PX03473.pdf |access-date=2019-07-22 |url-status=live |archive-url=https://web.archive.org/web/20190402223233/http://www.windowswiki.info/wp-content/uploads/codenames/PX03473.pdf |archive-date=2019-04-02 |quote=[…] One of the most important stimulanta for adding features was competitive pressure from [[#5.0|DRDOS 5.0]], which we first learnt of in the spring of 1990. The DRDOS feature set led us to add [[upper memory block|UMB]] support, task swapping, and Undelete. […] Considerable amounts of the team's management attention was diverted to new features such as file transfer software, undelete and network installation […] Eventually this situation reached a crisis point at the end of July 1990, and, led by [[Brad Silverberg|BradS]], the team's management spent an arduous series of meetings nailing down a schedule and process for closing the project down […]}} (1+32 pages)</ref>
<ref name="Rosch_1991_DR5">{{cite magazine |title=DR DOS 5.0 - The better operating system? |author-first=Winn L. |author-last=Rosch |magazine=[[PC Magazine]] |date=1991-02-12 |volume=10 |number=3 |pages=241–246, 257, 264, 266 |url=https://books.google.com/books?id=YxFTezF9-sMC&pg=PT246 |access-date=2019-07-26 |url-status=live |archive-url=https://archive.today/20190725223320/https://books.google.nl/books?id=YxFTezF9-sMC&pg=PT250&lpg=PT250&redir_esc=y%23v=onepage&q&f=false |archive-date=2019-07-25}}</ref>
<ref name="CW_1990_DR5">{{cite magazine |title=Kompatibles PC-Betriebssystem kann mehr als MS-DOS und PC-DOS - Digital Research stellt sich dem Monopolisten mit DR-DOS 5.0 |language=de |date=1990-07-06 |magazine=[[Computerwoche]] |publisher=IDG Business Media GmbH |url=https://www.computerwoche.de/a/digital-research-stellt-sich-dem-monopolisten-mit-dr-dos-5-0,1146584 |access-date=2019-07-26 |url-status=live |archive-url=https://archive.today/20190725224953/https://www.computerwoche.de/a/digital-research-stellt-sich-dem-monopolisten-mit-dr-dos-5-0,1146584 |archive-date=2019-07-25}}</ref>
<ref name="Salemi_1991_DR6">{{cite magazine |title=DR DOS 6.0 Leapfrogs MS-DOS 5.0 With Task-Switching in RAM |author-first=Leo |author-last=Salemi |series=First Looks |magazine=[[PC Magazine]] |date=1991-11-12 |volume=10 |number=19 |pages=48, 50 |url=https://books.google.com/books?id=Xb5VnujctzAC&pg=PT39 |access-date=2019-07-28}}</ref>
<ref name="drdos6userguide">{{cite book |title=DR DOS 6.0 User Guide Optimisation and Configuration Tips |edition=3 |date=February 1992 |id=10005695 0045-5424 |publisher=[[Digital Research, Inc.]] |url=https://www.4corn.co.uk/archive/docs/DR%20DOS%206.0%20User%20Guide-opt.pdf |access-date=2019-08-14 |url-status=dead |archive-url=https://web.archive.org/web/20190930135943/http://www.4corn.co.uk/archive/docs/DR%20DOS%206.0%20User%20Guide-opt.pdf |archive-date=2019-09-30}} (NB. Licensed from [[Novell]] to [[Acorn Computers|Acorn]].)</ref>
<ref name="Paul_1997_DRDOS6UN">{{cite book |title=Zusammenfassung der dokumentierten und undokumentierten Fähigkeiten von DR DOS 6.0  |language=de |trans-title=Summary of documented and undocumented features of DR DOS 6.0 |department=MPDOSTIP |author-first=Matthias R. |author-last=Paul |date=1997-04-13 |orig-date=1993-12-01 |version=Release 60 |url=http://www.antonis.de/dos/dos-tuts/mpdostip/html/drdos6un.htm |access-date=2019-08-14 |url-status=live |archive-url=https://web.archive.org/web/20181011214458/http://www.antonis.de/dos/dos-tuts/mpdostip/html/drdos6un.htm |archive-date=2018-10-11}} [https://web.archive.org/web/20190601152204/https://www.sac.sk/download/text/mpdostip.zip]</ref>
<ref name="Collins_2000">{{cite web |title=Settlement fuels Caldera 'family' - Orem company is 'settling up' with spinoffs thriving |date=2000-01-16 |newspaper=[[Deseret News]] |author-first1=Lois M. |author-last1=Collins |author-first2=Jenifer |author-last2=Nii |url=https://www.deseret.com/2000/1/16/19486018/settlement-fuels-caldera-family-br-orem-company-is-settling-up-with-spinoffs-thriving |access-date=2019-11-30 |url-status=live |archive-url=https://archive.today/20191130200831/https://www.deseret.com/2000/1/16/19486018/settlement-fuels-caldera-family-br-orem-company-is-settling-up-with-spinoffs-thriving |archive-date=2019-11-30}}</ref>
<ref name="Brown-Strutynski-Wharton_1983">{{Cite magazine |title=Tweaking more performance from an operating system - Hashing, caching, and memory blocking are just a few of the techniques used to punch up performance in the latest version of CP/M. |author-first1=David K. |author-last1=Brown |author-first2=Kathryn |author-last2=Strutynski |author-link2=Kathryn Strutynski |author-first3=John Harrison |author-last3=Wharton |author-link3=John Harrison Wharton |magazine=Computer Design - The Magazine of Computer Based Systems |department=System Design/Software |publisher=[[PennWell Publications]] / [[PennWell Publishing Company]] |publication-place=Littleton, Massachusetts, USA |issn=0010-4566 |oclc=1564597 |volume=22 |number=6 |date=1983-05-14 |id={{CODEN|CMPDA}}. <!-- |ia=bitsavers_computerDe_206764578 -->ark:/13960/t3hz07m4t |pages=[https://archive.org/details/bitsavers_computerDe_206764578/page/105/ 193]–194, 196, 198, 200, 202, 204 |url=http://archive.org/details/bitsavers_computerDe_206764578 |access-date=2021-08-14}} (7 pages) (NB. This source is about [[CP/M Plus]], where some similar concepts were introduced into the DRI family of operating systems a couple of years earlier.)</ref>
<ref name="Paul_2002_OS">{{cite web |title=How to detect FreeCOM/FreeDOS in-batch? |author-first=Matthias R. |author-last=Paul |date=2002-02-20 |url=http://marc.info/?l=freedos-dev&m=101423986407077&w=2 |publisher=freedos-dev mailing list |access-date=2014-08-06 |url-status=live |archive-url=https://web.archive.org/web/20181106220459/https://marc.info/?l=freedos-dev&m=101423986407077&w=2 |archive-date=2018-11-06}}</ref>
<ref name="2001Sales_1989">{{cite magazine |title=EZ-DOS - Break the stranglehold on your PC. |magazine=[[BYTE Magazine]] |issn=0360-5280 |publisher=[[McGraw-Hill]] |volume=14 |number=5 |date=May 1989 |type=Advertisement |id=<!-- |ia=byte-magazine-1989-05 -->ark:/13960/t88g9x33p |pages=[https://archive.org/details/byte-magazine-1989-05/page/n219/mode/1up 198], [https://archive.org/details/byte-magazine-1989-05/page/n360/mode/1up 320C] |url=https://archive.org/details/byte-magazine-1989-05 |access-date=2021-11-14}}</ref>
<ref name="Schulman_2000_Dossier">{{cite web |title=The Caldera v. Microsoft Dossier |author-first=Andrew |author-last=Schulman |date=2000-02-07 |work=[[O'Reilly Network]] |publisher=[[O'Reilly and Associates, Inc.]] |url=http://www.oreillynet.com/pub/a/network/2000/02/07/schulman.html |url-status=dead |archive-url=https://web.archive.org/web/20000819023434/http://www.oreillynet.com/pub/a/network/2000/02/07/schulman.html |archive-date=2000-08-19}}</ref>
<ref name="Schulman_2000_Undoc">{{cite web |title=Undoc |website=Undoc.com |author-first=Andrew |author-last=Schulman |date=2000-03-02 |url=http://www.undoc.com/ |archive-url=https://web.archive.org/web/20000816174318/http://www.undoc.com/ |archive-date=2000-08-16}}</ref>
<ref name="Caldera_1997_DOSSRC">{{cite web |title=Caldera OpenDOS Machine Readable Source Kit (M.R.S) 7.01 |publisher=Caldera, Inc. |date=1997-05-01 |url=https://archive.sundby.com/retro/DR-DOS/dossrc.zip |access-date=2022-01-02 |url-status=live |archive-url=https://web.archive.org/web/20210807095409/https://archive.sundby.com/retro/DR-DOS/dossrc.zip |archive-date=2021-08-07}} [https://web.archive.org/web/20220102102656/https://archive.sundby.com/retro/OpenDOS/OPENDOS_7.01_CODE.ZIP]</ref>
<ref name="Schneider_1994">{{cite journal |title=Das Ende von DOS ist nur noch eine Frage der Zeit |language=de |trans-title=The end of DOS is only a question of time |author-first=Stefanie |author-last=Schneider |journal=[[Computerwoche]] |publisher=[[IDG Business Media GmbH]] |location=Munich, Germany |date=1994-06-17 |url=https://www.computerwoche.de/a/das-ende-von-dos-ist-nur-noch-eine-frage-der-zeit,1121952 |access-date=2022-01-02 |url-status=live |archive-url=https://web.archive.org/web/20220102151737/https://www.computerwoche.de/a/das-ende-von-dos-ist-nur-noch-eine-frage-der-zeit,1121952 |archive-date=2022-01-02 |quote=[…] Novells DOS 7 fuer viele die Nummer eins […] Novell-DOS 7 gilt bei vielen Fachleuten derzeit als bestes DOS. […]}}</ref>
<ref name="Paul_1997_NWDOS7UN">{{cite book |title=NWDOS7UN.TXT — Zusammenfassung der dokumentierten und undokumentierten Fähigkeiten von Novell DOS 7 |department=MPDOSTIP |chapter=Chapter 1.3.xi: Überlange Pfade |author-first=Matthias R. |author-last=Paul |date=1997-06-07 |orig-date=April 1994 |language=de |url=http://www.antonis.de/dos/dos-tuts/mpdostip/html/nwdos7un.htm |access-date=2016-11-07 |url-status=live |archive-url=https://web.archive.org/web/20161107122352/http://www.antonis.de/dos/dos-tuts/mpdostip/html/nwdos7un.htm |archive-date=2016-11-07}}</ref>
<ref name="edrdos_2023">{{cite web |title=Enhanced DR-DOS kernel and command interpreter |website=[[GitHub]] |url=https://github.com/SvarDOS/edrdos |access-date=2024-10-04}}</ref>
}}