CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available" lang="en" dir="ltr"> <head> <meta charset="UTF-8"> <title>FlexOS - Wikipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )enwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy", "wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"7c0b33c5-6b1d-4f76-93c3-9e2e1d65d762","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"FlexOS","wgTitle":"FlexOS","wgCurRevisionId":1243496156,"wgRevisionId":1243496156,"wgArticleId":18364730,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["All articles with dead external links","Articles with dead external links from April 2024","Articles with permanently dead external links","Articles with short description","Short description matches Wikidata","Use dmy dates from April 2019","Use list-defined references from December 2021","Short description is different from Wikidata","CS1 German-language sources (de)","CP/M variants","Disk operating systems","DOS variants","Digital Research operating systems","Novell operating systems", "Microcomputer software","Real-time operating systems","Embedded operating systems","Discontinued operating systems","C (programming language) software"],"wgPageViewLanguage":"en","wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"FlexOS","wgRelevantArticleId":18364730,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgFlaggedRevsParams":{"tags":{"status":{"levels":1}}},"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":false,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":40000,"wgRelatedArticlesCompat":[],"wgCentralAuthMobileDomain":false,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition": "interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q2560413","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":false,"wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","jquery.makeCollapsible.styles":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES= ["ext.cite.ux-enhancements","mediawiki.page.media","site","mediawiki.page.ready","jquery.makeCollapsible","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.ReferenceTooltips","ext.gadget.switcher","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession","wikibase.sidebar.tracking"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.cite.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.4"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="FlexOS - Wikipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//en.m.wikipedia.org/wiki/FlexOS"> <link rel="alternate" type="application/x-wiki" title="Edit this page" href="/w/index.php?title=FlexOS&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipedia (en)"> <link rel="EditURI" type="application/rsd+xml" href="//en.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://en.wikipedia.org/wiki/FlexOS"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en"> <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="//login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-FlexOS rootpage-FlexOS skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Jump to content</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Main menu" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Main menu</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Main menu</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">hide</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navigation </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z"><span>Main page</span></a></li><li id="n-contents" class="mw-list-item"><a href="/wiki/Wikipedia:Contents" title="Guides to browsing Wikipedia"><span>Contents</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Current_events" title="Articles related to current events"><span>Current events</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Special:Random" title="Visit a randomly selected article [x]" accesskey="x"><span>Random article</span></a></li><li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:About" title="Learn about Wikipedia and how it works"><span>About Wikipedia</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us" title="How to contact Wikipedia"><span>Contact us</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Contribute </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-help" class="mw-list-item"><a href="/wiki/Help:Contents" title="Guidance on how to use and edit Wikipedia"><span>Help</span></a></li><li id="n-introduction" class="mw-list-item"><a href="/wiki/Help:Introduction" title="Learn how to edit Wikipedia"><span>Learn to edit</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Community_portal" title="The hub for editors"><span>Community portal</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:RecentChanges" title="A list of recent changes to Wikipedia [r]" accesskey="r"><span>Recent changes</span></a></li><li id="n-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_upload_wizard" title="Add images or other media for use on Wikipedia"><span>Upload file</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Main_Page" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="The Free Encyclopedia" src="/static/images/mobile/copyright/wikipedia-tagline-en.svg" width="117" height="13" style="width: 7.3125em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Special:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Search Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia" aria-label="Search Wikipedia" autocapitalize="sentences" title="Search Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Personal tools"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Appearance" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Appearance</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en" class=""><span>Donate</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=FlexOS" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=FlexOS" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o" class=""><span>Log in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Log in and more options" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personal tools" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personal tools</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="User menu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en"><span>Donate</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=FlexOS" title="You are encouraged to create an account and log in; however, it is not mandatory"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Create account</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=FlexOS" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about edits from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-Overview" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Overview"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Overview</span> </div> </a> <ul id="toc-Overview-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Commands" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Commands"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Commands</span> </div> </a> <ul id="toc-Commands-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Versions" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Versions"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Versions</span> </div> </a> <ul id="toc-Versions-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Adaptations" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Adaptations"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Adaptations</span> </div> </a> <button aria-controls="toc-Adaptations-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Adaptations subsection</span> </button> <ul id="toc-Adaptations-sublist" class="vector-toc-list"> <li id="toc-IBM_4680_OS" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#IBM_4680_OS"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.1</span> <span>IBM 4680 OS</span> </div> </a> <ul id="toc-IBM_4680_OS-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-IBM_and_Toshiba_4690_OS" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#IBM_and_Toshiba_4690_OS"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.2</span> <span>IBM and Toshiba 4690 OS</span> </div> </a> <ul id="toc-IBM_and_Toshiba_4690_OS-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Siemens_S5-DOS/MT" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Siemens_S5-DOS/MT"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.3</span> <span>Siemens S5-DOS/MT</span> </div> </a> <ul id="toc-Siemens_S5-DOS/MT-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-CTM" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#CTM"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.4</span> <span>CTM</span> </div> </a> <ul id="toc-CTM-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Further_reading" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Further_reading"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Further reading</span> </div> </a> <ul id="toc-Further_reading-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">FlexOS</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 6 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-6" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">6 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/FlexOS" title="FlexOS – Catalan" lang="ca" hreflang="ca" data-title="FlexOS" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/FlexOS" title="FlexOS – Lithuanian" lang="lt" hreflang="lt" data-title="FlexOS" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/FlexOS" title="FlexOS – Polish" lang="pl" hreflang="pl" data-title="FlexOS" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/FlexOS" title="FlexOS – Russian" lang="ru" hreflang="ru" data-title="FlexOS" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/FlexOS" title="FlexOS – Turkish" lang="tr" hreflang="tr" data-title="FlexOS" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/FlexOS" title="FlexOS – Ukrainian" lang="uk" hreflang="uk" data-title="FlexOS" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2560413#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/FlexOS" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:FlexOS" rel="discussion" title="Discuss improvements to the content page [t]" accesskey="t"><span>Talk</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/FlexOS"><span>Read</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=FlexOS&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=FlexOS&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Tools" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Tools</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Tools</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">hide</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="More options" > <div class="vector-menu-heading"> Actions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/FlexOS"><span>Read</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=FlexOS&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=FlexOS&action=history"><span>View history</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/FlexOS" title="List of all English Wikipedia pages containing links to this page [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/FlexOS" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=FlexOS&oldid=1243496156" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=FlexOS&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=FlexOS&id=1243496156&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FFlexOS"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FFlexOS"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Print/export </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=FlexOS&action=show-download-screen" title="Download this page as a PDF file"><span>Download as PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=FlexOS&printable=yes" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2560413" title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">Not to be confused with <a href="/wiki/FLEX_(operating_system)" title="FLEX (operating system)">FLEX (operating system)</a>.</div> <div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Discontinued modular real-time multiuser multitasking operating system</div> <p> <span class="anchor" id="CDOS_68K"></span><span class="anchor" id="FlexOS_68K"></span> </p> <div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Operating system</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox vevent"><caption class="infobox-title summary">FlexOS</caption><tbody><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Programmer" title="Programmer">Developer</a></th><td class="infobox-data"><a href="/wiki/Digital_Research" title="Digital Research">Digital Research</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Programming_language" title="Programming language">Written in</a></th><td class="infobox-data"><a href="/wiki/C_(programming_language)" title="C (programming language)">C</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Working state</th><td class="infobox-data">Discontinued</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Source model</th><td class="infobox-data"><a href="/wiki/Closed_source" class="mw-redirect" title="Closed source">Closed source</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Initial release</th><td class="infobox-data">1986<span class="noprint">; 38 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">1986</span>)</span></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_release_life_cycle" title="Software release life cycle">Latest release</a></th><td class="infobox-data">2.33 / May 1998<span class="noprint">; 26 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">1998-05</span>)</span></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_release_life_cycle" title="Software release life cycle">Latest preview</a></th><td class="infobox-data">2.34 / 1999<span class="noprint">; 25 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">1999</span>)</span></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Marketing target</th><td class="infobox-data">Industrial, <a href="/wiki/Point-of-sale" class="mw-redirect" title="Point-of-sale">PoS</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Natural_language" title="Natural language">Available in</a></th><td class="infobox-data">English</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Platforms</th><td class="infobox-data"><a href="/wiki/Intel_80186" title="Intel 80186">Intel 80186</a>, <a href="/wiki/Intel_80286" title="Intel 80286">Intel 80286</a>, <a href="/wiki/Intel_80386" class="mw-redirect" title="Intel 80386">Intel 80386</a>, <a href="/wiki/Motorola_68000" title="Motorola 68000">Motorola 68000</a>, <a href="/wiki/NEC_V60" title="NEC V60">V60</a>, <a href="/wiki/NEC_V70" class="mw-redirect" title="NEC V70">V70</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Kernel_(operating_system)" title="Kernel (operating system)">Kernel</a> type</th><td class="infobox-data">modular</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/User_interface" title="User interface">Default<br />user interface</a></th><td class="infobox-data">various frontends, <a href="/wiki/X/GEM" class="mw-redirect" title="X/GEM">X/GEM</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_license" title="Software license">License</a></th><td class="infobox-data"><a href="/wiki/Proprietary_software" title="Proprietary software">Proprietary</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Preceded by</th><td class="infobox-data"><a href="/wiki/Concurrent_DOS_286" class="mw-redirect" title="Concurrent DOS 286">Concurrent DOS 286</a>, <a href="/wiki/Concurrent_DOS_68K" class="mw-redirect" title="Concurrent DOS 68K">Concurrent DOS 68K</a>, <a href="/wiki/Concurrent_DOS_V60" class="mw-redirect" title="Concurrent DOS V60">Concurrent DOS V60</a><sup id="cite_ref-Glass_1991_Infoworld_1-0" class="reference"><a href="#cite_note-Glass_1991_Infoworld-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Succeeded by</th><td class="infobox-data"><a href="/wiki/S5-DOS/MT" class="mw-redirect" title="S5-DOS/MT">S5-DOS/MT</a>, <a href="/wiki/4680_OS" class="mw-redirect" title="4680 OS">4680 OS</a>, <a href="/wiki/4690_OS" class="mw-redirect" title="4690 OS">4690 OS</a></td></tr></tbody></table> <p><b>FlexOS</b> is a discontinued modular real-time multiuser <a href="/wiki/Computer_multitasking" title="Computer multitasking">multitasking</a> operating system (<a href="/wiki/RTOS" class="mw-redirect" title="RTOS">RTOS</a>) designed for computer-integrated manufacturing, laboratory, retail and financial markets. Developed by <a href="/wiki/Digital_Research" title="Digital Research">Digital Research</a>'s Flexible Automation Business Unit in <a href="/wiki/Monterey,_California" title="Monterey, California">Monterey</a>, California, in 1985.<sup id="cite_ref-Watt_1986_Reorg_2-0" class="reference"><a href="#cite_note-Watt_1986_Reorg-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-BW_1991_3-0" class="reference"><a href="#cite_note-BW_1991-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>The system was considered to become a successor of Digital Research's earlier <a href="/wiki/Concurrent_DOS" class="mw-redirect" title="Concurrent DOS">Concurrent DOS</a>, but with a new, modular, and considerably different system architecture and portability across several processor families.<sup id="cite_ref-CBR_1987_FlexOS-286_4-0" class="reference"><a href="#cite_note-CBR_1987_FlexOS-286-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Still named <a href="/wiki/Concurrent_DOS_68K" class="mw-redirect" title="Concurrent DOS 68K">Concurrent DOS 68K</a> and <a href="/wiki/Concurrent_DOS_286" class="mw-redirect" title="Concurrent DOS 286">Concurrent DOS 286</a>, it was renamed into FlexOS on 1 October 1986 to better differentiate the target audiences. </p><p>FlexOS was licensed by several OEMs who selected it as the basis for their own operating systems like <a href="/wiki/4680_OS" class="mw-redirect" title="4680 OS">4680 OS</a>, <a href="/wiki/4690_OS" class="mw-redirect" title="4690 OS">4690 OS</a>, <a href="/wiki/S5-DOS/MT" class="mw-redirect" title="S5-DOS/MT">S5-DOS/MT</a> and others. Unrelated to FlexOS, the original Concurrent DOS system architecture found a continuation in successors like <a href="/wiki/Concurrent_DOS_XM" class="mw-redirect" title="Concurrent DOS XM">Concurrent DOS XM</a> and <a href="/wiki/Concurrent_DOS_386" class="mw-redirect" title="Concurrent DOS 386">Concurrent DOS 386</a> as well. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Overview">Overview</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=FlexOS&action=edit&section=1" title="Edit section: Overview"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Concurrent DOS 286, Concurrent DOS 68K and FlexOS were designed by Francis "Frank" R. Holsworth (using <a href="/wiki/Siglum" class="mw-redirect" title="Siglum">siglum</a> FRH).<sup id="cite_ref-Wein_2002_5-0" class="reference"><a href="#cite_note-Wein_2002-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Holsworth_2006_6-0" class="reference"><a href="#cite_note-Holsworth_2006-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Like <a href="/wiki/Portable_CP/M" class="mw-redirect" title="Portable CP/M">Portable CP/M</a>, <a href="/wiki/Concurrent_DOS_286" class="mw-redirect" title="Concurrent DOS 286">Concurrent DOS 286</a>, <a href="/wiki/Concurrent_DOS_68K" class="mw-redirect" title="Concurrent DOS 68K">Concurrent DOS 68K</a> and <a href="/wiki/Concurrent_DOS_V60" class="mw-redirect" title="Concurrent DOS V60">Concurrent DOS V60</a>,<sup id="cite_ref-Glass_1991_Infoworld_1-1" class="reference"><a href="#cite_note-Glass_1991_Infoworld-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-DRI_1986_CDOS68K-2_7-0" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> FlexOS was written in <a href="/wiki/C_language" class="mw-redirect" title="C language">C</a> for higher portability across hardware platforms, and it featured very low interrupt latency and fast context switching.<sup id="cite_ref-CBR_1987_FlexOS_8-0" class="reference"><a href="#cite_note-CBR_1987_FlexOS-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>The original <a href="/wiki/Protected_mode" title="Protected mode">protected mode</a> FlexOS 286 version 1.3<sup id="cite_ref-DRI_1986_FlexOS286_9-0" class="reference"><a href="#cite_note-DRI_1986_FlexOS286-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> was designed for host machines equipped with <a href="/wiki/Intel_286" class="mw-redirect" title="Intel 286">286</a> CPUs, and with adaptations for <a href="/wiki/NEC_V60" title="NEC V60">NEC V60</a>, <a href="/wiki/NEC_V70" class="mw-redirect" title="NEC V70">NEC V70</a> and <a href="/wiki/Motorola_68000" title="Motorola 68000">Motorola 68000</a> processors planned.<sup id="cite_ref-CBR_1987_FlexOS-286_4-1" class="reference"><a href="#cite_note-CBR_1987_FlexOS-286-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Glass_1991_Infoworld_1-2" class="reference"><a href="#cite_note-Glass_1991_Infoworld-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-DRI_1986_CDOS68K-2_7-1" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> FlexOS 286 executables using the system's native <a href="/w/index.php?title=INT_DCh&action=edit&redlink=1" class="new" title="INT DCh (page does not exist)">INT DCh</a> (<a href="/w/index.php?title=INT_220&action=edit&redlink=1" class="new" title="INT 220 (page does not exist)">INT 220</a>) <a href="/wiki/Application_program_interface" class="mw-redirect" title="Application program interface">application program interface</a> had the filename extension <a href="/wiki/.286" class="mw-redirect" title=".286">.286</a>. A <a href="/wiki/CP/M" title="CP/M">CP/M</a> <a href="/wiki/API_front-end" class="mw-redirect" title="API front-end">API front-end</a> (FE) was available as well,<sup id="cite_ref-DRI_1986_IBM_10-0" class="reference"><a href="#cite_note-DRI_1986_IBM-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> using the extension <a href="/wiki/CMD_file_(CP/M)" title="CMD file (CP/M)">.CMD</a> for executables. (A filename extension of <a href="/wiki/.68K" class="mw-redirect" title=".68K">.68K</a> was reserved for FlexOS 68K, a file extension derived from <a href="/wiki/Concurrent_DOS_68K" class="mw-redirect" title="Concurrent DOS 68K">Concurrent DOS 68K</a> as of 1986.<sup id="cite_ref-DRI_1986_CDOS68K-1_11-0" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-1-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-DRI_1986_CDOS68K-2_7-2" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-DRI_1986_CDOS68K-3_12-0" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-3-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-DRI_1986_IBM_10-1" class="reference"><a href="#cite_note-DRI_1986_IBM-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup>) </p><p>In May 1987, FlexOS version 1.31 was released for 80286 machines.<sup id="cite_ref-DR_1986_131_13-0" class="reference"><a href="#cite_note-DR_1986_131-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> The developer version required an <a href="/wiki/IBM_PC/AT" class="mw-redirect" title="IBM PC/AT">IBM PC/AT</a>-compatible machine with 640 KB of <a href="/wiki/Conventional_memory" title="Conventional memory">conventional</a> and 512 KB of <a href="/wiki/Extended_memory" title="Extended memory">extended memory</a>, and either a (monochrome) CGA or an EGA graphics adapter. </p><p>FlexOS supported a concept of <a href="/wiki/Dynamic_loading" title="Dynamic loading">dynamically loadable</a> and unloadable subdrivers, and it came with driver prototypes for floppies, hard disks, printers, serial interfaces, RAM disks, mice and console drivers. </p><p>During boot, the FLEX286.SYS kernel would load the resource managers and device drivers specified in the CONFIG.SYS <i>binary</i> file (not to be mixed up with the similarly named <a href="/wiki/CONFIG.SYS" title="CONFIG.SYS">CONFIG.SYS</a> configuration file under <a href="/wiki/DOS" title="DOS">DOS</a>), and its shell (COMMAND.286) would execute a CONFIG.BAT startup batch job instead of the common <a href="/wiki/AUTOEXEC.BAT" title="AUTOEXEC.BAT">AUTOEXEC.BAT</a>. </p><p>FlexOS's optional DOS emulator provided limited <a href="/wiki/PC_DOS_2.1" class="mw-redirect" title="PC DOS 2.1">PC DOS 2.1</a> compatibility for DOS .COM and .EXE programs.<sup id="cite_ref-DRI_1986_FlexOS286_9-1" class="reference"><a href="#cite_note-DRI_1986_FlexOS286-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Certain restrictions applied in "<a href="/wiki/8086_emulation_mode" class="mw-redirect" title="8086 emulation mode">8086 emulation mode</a>" since these programs were executed in the processor's protected mode. Due to bugs in earlier steppings of the Intel 80286, the FlexOS 286 DOS front-end required at least the 80286 E2 stepping to function properly (see <a href="/wiki/286_LOADALL" class="mw-redirect" title="286 LOADALL">LOADALL</a>).<sup id="cite_ref-DRI_1986_FlexOS286_9-2" class="reference"><a href="#cite_note-DRI_1986_FlexOS286-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> These problems had already caused delays in the delivery of Concurrent DOS 286 earlier.<sup id="cite_ref-Infoworld_1985_Super_14-0" class="reference"><a href="#cite_note-Infoworld_1985_Super-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Infoworld_1985_80286_15-0" class="reference"><a href="#cite_note-Infoworld_1985_80286-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </p> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:IBM_PC_GEM.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/79/IBM_PC_GEM.jpg/240px-IBM_PC_GEM.jpg" decoding="async" width="240" height="234" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/79/IBM_PC_GEM.jpg/360px-IBM_PC_GEM.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/79/IBM_PC_GEM.jpg/480px-IBM_PC_GEM.jpg 2x" data-file-width="1881" data-file-height="1836" /></a><figcaption>Graphics Environment Manager (GEM) Graphic User Interface (GUI) in 1985</figcaption></figure> <p>The system optionally supported a multitasking <a href="/wiki/Graphics_Environment_Manager" class="mw-redirect" title="Graphics Environment Manager">GEM</a> <a href="/wiki/Virtual_Device_Interface" class="mw-redirect" title="Virtual Device Interface">VDI</a> for graphical applications.<sup id="cite_ref-DRI_1986_FlexOS286_9-3" class="reference"><a href="#cite_note-DRI_1986_FlexOS286-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-CBR_1988_DR_16-0" class="reference"><a href="#cite_note-CBR_1988_DR-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </p><p>FlexOS 1.31 could be linked with none, either or both of these two modules. FlexOS 1.31 also supported <a href="/wiki/FlexNet_(Novell)" class="mw-redirect" title="FlexNet (Novell)">FlexNet</a>. </p><p>By June 1987 there were also versions 1.0 of FlexOS 386 (for hosts) and FlexOS 186 (for remote cell controllers).<sup id="cite_ref-CBR_1987_FlexOS_8-1" class="reference"><a href="#cite_note-CBR_1987_FlexOS-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> FlexOS 386 provided a windowing feature, and offered <a href="/wiki/PC_DOS_3.2" class="mw-redirect" title="PC DOS 3.2">PC DOS 3.2</a> and GEM compatibility.<sup id="cite_ref-CBR_1987_FlexOS_8-2" class="reference"><a href="#cite_note-CBR_1987_FlexOS-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>FlexOS 286 and FlexOS 386 versions 2.0 were registered on 3 July 1989. </p><p>Among the major FlexOS customers in 1990/1991 were <a href="/wiki/FANUC" title="FANUC">FANUC</a>, <a href="/wiki/IBM" title="IBM">IBM</a>, <a href="/wiki/International_Computers_Limited" title="International Computers Limited">ICL</a>, <a href="/wiki/Nixdorf_Computer" title="Nixdorf Computer">Nixdorf</a>, <a href="/wiki/Siemens" title="Siemens">Siemens</a>, <a href="/wiki/Toshiba_TEC" class="mw-redirect" title="Toshiba TEC">TEC</a>, <a href="/wiki/Thorn_EMI_Software" class="mw-redirect" title="Thorn EMI Software">Thorn EMI Software</a> and <a href="/w/index.php?title=Micrologic&action=edit&redlink=1" class="new" title="Micrologic (page does not exist)">Micrologic</a>.<sup id="cite_ref-BW_1991_3-1" class="reference"><a href="#cite_note-BW_1991-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-DRI_1990_Sold_17-0" class="reference"><a href="#cite_note-DRI_1990_Sold-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Novell" title="Novell">Novell</a> bought Digital Research for <a href="/wiki/United_States_dollar" title="United States dollar">US$</a>80 million<sup id="cite_ref-Schulman_1994_Undocumented-DOS_18-0" class="reference"><a href="#cite_note-Schulman_1994_Undocumented-DOS-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> in July 1991.<sup id="cite_ref-Scott_1991_Merger_19-0" class="reference"><a href="#cite_note-Scott_1991_Merger-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-BW_1991_3-2" class="reference"><a href="#cite_note-BW_1991-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Allchin_1991_20-0" class="reference"><a href="#cite_note-Allchin_1991-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Schulman_1994_Undocumented-DOS_18-1" class="reference"><a href="#cite_note-Schulman_1994_Undocumented-DOS-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> </p><p><i><a href="/wiki/X/GEM" class="mw-redirect" title="X/GEM">X/GEM</a> for FlexOS release 1.0</i> (a.k.a. X/GEM FlexOS 286 and 386) and FlexNet were registered on 21 December 1992. </p><p>FlexOS was used as the primary test platform for the new <a href="/wiki/Novell_Embedded_Systems_Technology" title="Novell Embedded Systems Technology">Novell Embedded Systems Technology</a> (NEST).<sup id="cite_ref-Novell_1995_NEST_21-0" class="reference"><a href="#cite_note-Novell_1995_NEST-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> </p><p>When Novell decided to abandon further development of the various Digital Research operating systems such as <a href="/wiki/Multiuser_DOS" title="Multiuser DOS">Multiuser DOS</a> (a successor to Concurrent DOS) and <a href="/wiki/Novell_DOS" class="mw-redirect" title="Novell DOS">Novell DOS</a> (a successor to <a href="/wiki/DR_DOS" class="mw-redirect" title="DR DOS">DR DOS</a>), they sold FlexOS off to the <a href="/wiki/Santa_Clara,_California" title="Santa Clara, California">Santa Clara</a>, California-based <a href="/wiki/Integrated_Systems_Inc." title="Integrated Systems Inc.">Integrated Systems Inc.</a> (ISI) for US$3 million in July 1994.<sup id="cite_ref-ISI_1998_pNDE_22-0" class="reference"><a href="#cite_note-ISI_1998_pNDE-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> The deal comprised a direct payment of half this sum as well as shares representing 2% of the company. The company already had <a href="/wiki/PSOS_(real-time_operating_system)" title="PSOS (real-time operating system)">pSOS+</a>, another modular real-time multitasking operating system for embedded systems, but they continued to maintain FlexOS as well.<sup id="cite_ref-ISI_1998_pNDE_22-1" class="reference"><a href="#cite_note-ISI_1998_pNDE-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> FlexOS version 2.33 was current as of May 1998 and with FlexOS 2.34 to be released soon after with added support for faster CPUs, 64 MB of memory, EIDE and ATAPI CDROM drives. </p><p>Integrated Systems was bought by their competitor <a href="/wiki/Wind_River_Systems" title="Wind River Systems">Wind River Systems</a> in February 2000. </p> <div class="mw-heading mw-heading2"><h2 id="Commands">Commands</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=FlexOS&action=edit&section=2" title="Edit section: Commands"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The following list of <a href="/wiki/Command_(computing)" title="Command (computing)">commands</a> is supported by FlexOS:<sup id="cite_ref-DRI_1986_FlexOSUserGuide_23-0" class="reference"><a href="#cite_note-DRI_1986_FlexOSUserGuide-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> </p> <style data-mw-deduplicate="TemplateStyles:r1184024115">.mw-parser-output .div-col{margin-top:0.3em;column-width:30em}.mw-parser-output .div-col-small{font-size:90%}.mw-parser-output .div-col-rules{column-rule:1px solid #aaa}.mw-parser-output .div-col dl,.mw-parser-output .div-col ol,.mw-parser-output .div-col ul{margin-top:0}.mw-parser-output .div-col li,.mw-parser-output .div-col dd{page-break-inside:avoid;break-inside:avoid-column}</style><div class="div-col" style="column-width: 9em;"> <ul><li><a href="/wiki/ASSIGN_(DOS_command)" class="mw-redirect" title="ASSIGN (DOS command)">ASSIGN</a></li> <li>BACK</li> <li><a href="/wiki/BACKUP_(DOS_command)" class="mw-redirect" title="BACKUP (DOS command)">BACKUP</a></li> <li><a href="/wiki/BREAK_(DOS_command)" class="mw-redirect" title="BREAK (DOS command)">BREAK</a></li> <li>CANCEL</li> <li><a href="/wiki/Cd_(command)" title="Cd (command)">CHDIR</a></li> <li><a href="/wiki/Chkdsk" class="mw-redirect" title="Chkdsk">CHKDSK</a></li> <li><a href="/wiki/COMMAND.COM" title="COMMAND.COM">COMMAND</a></li> <li><a href="/wiki/Comp_(command)" title="Comp (command)">COMP</a></li> <li>CONFIG</li> <li><a href="/wiki/Copy_(command)" title="Copy (command)">COPY</a></li> <li><a href="/wiki/Ctty" class="mw-redirect" title="Ctty">CTTY</a></li> <li><a href="/wiki/Date_(command)" class="mw-redirect" title="Date (command)">DATE</a></li> <li>DEFINE</li> <li><a href="/wiki/Dir_(command)" title="Dir (command)">DIR</a></li> <li><a href="/wiki/Diskcomp" title="Diskcomp">DISKCOMP</a></li> <li><a href="/wiki/Diskcopy" title="Diskcopy">DISKCOPY</a></li> <li>DISKSET</li> <li><a href="/wiki/Del_(command)" title="Del (command)">ERASE</a></li> <li><a href="/wiki/Exit_(command)" title="Exit (command)">EXIT</a></li> <li><a href="/wiki/Fdisk" title="Fdisk">FDISK</a></li> <li><a href="/wiki/Find_(Windows)" title="Find (Windows)">FIND</a></li> <li><a href="/wiki/Format_(command)" title="Format (command)">FORMAT</a></li> <li>FSET</li> <li>LIST</li> <li>LOGOFF</li> <li>LOGON</li> <li><a href="/wiki/Mkdir" title="Mkdir">MKDIR</a></li> <li><a href="/wiki/More_(command)" title="More (command)">MORE</a></li> <li>ORDER</li> <li>PASSWORD</li> <li><a href="/wiki/PATH_(DOS_command)" class="mw-redirect" title="PATH (DOS command)">PATH</a></li> <li><a href="/wiki/Print_(command)" class="mw-redirect" title="Print (command)">PRINT</a></li> <li>PROCESS</li> <li><a href="/wiki/PROMPT_(DOS_command)" class="mw-redirect" title="PROMPT (DOS command)">PROMPT</a></li> <li>RECDIR</li> <li>RECFILE</li> <li><a href="/wiki/Ren_(command)" title="Ren (command)">RENAME</a></li> <li><a href="/wiki/RESTORE_(DOS_command)" class="mw-redirect" title="RESTORE (DOS command)">RESTORE</a></li> <li><a href="/wiki/Rmdir" title="Rmdir">RMDIR</a></li> <li>SECURITY</li> <li><a href="/wiki/SORT_(DOS_command)" class="mw-redirect" title="SORT (DOS command)">SORT</a></li> <li><a href="/wiki/SYS_(command)" title="SYS (command)">SYS</a></li> <li><a href="/wiki/TIME_(command)" title="TIME (command)">TIME</a></li> <li><a href="/wiki/Tree_(command)" title="Tree (command)">TREE</a></li> <li><a href="/wiki/TYPE_(DOS_command)" title="TYPE (DOS command)">TYPE</a></li> <li><a href="/wiki/Ver_(command)" title="Ver (command)">VER</a></li> <li><a href="/wiki/Vol_(command)" title="Vol (command)">VOL</a></li></ul> </div> <div class="mw-heading mw-heading2"><h2 id="Versions">Versions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=FlexOS&action=edit&section=3" title="Edit section: Versions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Known FlexOS versions include: </p><p><a href="/wiki/Motorola_68000" title="Motorola 68000">Motorola 68000</a> / <a href="/wiki/Freescale" class="mw-redirect" title="Freescale">Freescale</a>/<a href="/wiki/NXP" class="mw-redirect" title="NXP">NXP</a> <a href="/wiki/ColdFire_MCF5251" class="mw-redirect" title="ColdFire MCF5251">ColdFire MCF5251</a><sup id="cite_ref-Freescale_2006_ColdFire_24-0" class="reference"><a href="#cite_note-Freescale_2006_ColdFire-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> platform: </p> <ul><li><a href="/wiki/Concurrent_DOS_68K" class="mw-redirect" title="Concurrent DOS 68K">Concurrent DOS 68K</a> 1.0 (1985)<sup id="cite_ref-Gallant_1984_25-0" class="reference"><a href="#cite_note-Gallant_1984-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Knox_1986_CDOS68K_26-0" class="reference"><a href="#cite_note-Knox_1986_CDOS68K-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup></li> <li>Concurrent DOS 68K 1.1<sup id="cite_ref-DRI_1986_CDOS68K-2_7-3" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></li> <li>Concurrent DOS 68K 1.20 (April 1986,<sup id="cite_ref-DRI_1986_CDOS68K-1_11-1" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-1-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-DRI_1986_CDOS68K-2_7-4" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-DRI_1986_CDOS68K-3_12-1" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-3-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> 1986-05-27<sup id="cite_ref-DRI_1986_CDOS68K-2_7-5" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>)</li> <li>Concurrent DOS 68K 1.21 (1986)<sup id="cite_ref-DRI_1986_CDOS68K-1_11-2" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-1-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-DRI_1986_CDOS68K-2_7-6" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-DRI_1986_CDOS68K-3_12-2" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-3-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Taetsch_1987_27-0" class="reference"><a href="#cite_note-Taetsch_1987-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup></li> <li>FlexOS 68K<sup id="cite_ref-Freescale_2006_ColdFire_24-1" class="reference"><a href="#cite_note-Freescale_2006_ColdFire-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> 1.x?</li></ul> <p><a href="/wiki/Intel_80286" title="Intel 80286">Intel 80286</a> platform: </p> <ul><li><a href="/wiki/MP/M-286" class="mw-redirect" title="MP/M-286">MP/M-286</a> (1982)<sup id="cite_ref-Swaine_1982_MPM286_28-0" class="reference"><a href="#cite_note-Swaine_1982_MPM286-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup></li> <li><a href="/w/index.php?title=Concurrent_CP/M-286&action=edit&redlink=1" class="new" title="Concurrent CP/M-286 (page does not exist)">Concurrent CP/M-286</a> (1985)<sup id="cite_ref-Bidmead_1985_CCPM286_29-0" class="reference"><a href="#cite_note-Bidmead_1985_CCPM286-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Concurrent_DOS_286" class="mw-redirect" title="Concurrent DOS 286">Concurrent DOS 286</a> preview (1985-01)<sup id="cite_ref-BYTE_1985_CDOS286_30-0" class="reference"><a href="#cite_note-BYTE_1985_CDOS286-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Infoworld_1985_Super_14-1" class="reference"><a href="#cite_note-Infoworld_1985_Super-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Concurrent_DOS_286" class="mw-redirect" title="Concurrent DOS 286">Concurrent DOS 286</a> 1.0 (1985-08-06)<sup id="cite_ref-DRI_1986_CDOS68K-2_7-7" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> <ul><li>Concurrent DOS 286 1.0.01 (1985-08-18/1985-08-21)</li> <li>Concurrent DOS 286 1.0.02 (1985-08-22/1985-09-12)</li> <li>Concurrent DOS 286 1.0.03 (1985-09-10/1985-09-12)</li> <li>Concurrent DOS 286 1.0.04 (1985-09-17)</li> <li>Concurrent DOS 286 1.0.05 (1985-11-01)</li> <li>Concurrent DOS 286 1.0.06 (1985-12-10)</li></ul></li> <li>Concurrent DOS 286 1.1 (1986-01-07)<sup id="cite_ref-DRI_1986_CDOS68K-2_7-8" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></li> <li>Concurrent DOS 286 1.2 (1986)<sup id="cite_ref-Meta_1986_HighC12_31-0" class="reference"><a href="#cite_note-Meta_1986_HighC12-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> <ul><li>Concurrent DOS 286 1.2.00 (1986-04-10/1986-04-24)</li> <li>Concurrent DOS 286 1.2.01 (1986-04-16/1986-05-19)</li> <li>Concurrent DOS 286 1.2.02 (1986-08-18)</li></ul></li> <li>FlexOS 286 1.3 (November 1986)<sup id="cite_ref-DRI_1986_FlexOS286_9-4" class="reference"><a href="#cite_note-DRI_1986_FlexOS286-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Taetsch_1987_27-1" class="reference"><a href="#cite_note-Taetsch_1987-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup></li> <li>FlexOS 286 1.31 (May 1987)<sup id="cite_ref-DR_1986_131_13-1" class="reference"><a href="#cite_note-DR_1986_131-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup></li> <li>FlexOS 286 1.5 (1988-02-29)</li> <li>FlexOS 286 2.0.00 (1988-03-31)</li> <li>FlexOS 286 2.0 (July 1989)</li> <li>FlexOS 286 2.32 (July 1993)</li></ul> <p><a href="/wiki/Intel_80186" title="Intel 80186">Intel 80186</a>/<a href="/wiki/NEC_V20" title="NEC V20">NEC V20</a>/<a href="/wiki/NEC_V30" class="mw-redirect" title="NEC V30">V30</a> platform: </p> <ul><li>FlexOS 186 (1986-09-04 forked)</li> <li>FlexOS 186 1.0 (June 1987)</li></ul> <p><a href="/wiki/Intel_80386" class="mw-redirect" title="Intel 80386">Intel 80386</a> platform: </p> <ul><li>FlexOS 386 1.0 (June 1987)</li> <li>FlexOS 386 2.0 (July 1989)</li> <li>FlexOS 386 2.30?</li> <li>FlexOS 386 2.31?</li> <li>FlexOS 386 2.32 (July 1993)</li> <li>FlexOS 386 2.33 (May 1998)</li> <li>FlexOS 386 2.34 (planned for 1999)</li></ul> <p><a href="/wiki/NEC_V60" title="NEC V60">NEC V60</a> platform: </p> <ul><li><a href="/wiki/Concurrent_DOS_V60" class="mw-redirect" title="Concurrent DOS V60">Concurrent DOS V60</a>?<sup id="cite_ref-Glass_1991_Infoworld_1-3" class="reference"><a href="#cite_note-Glass_1991_Infoworld-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-DRI_1986_CDOS68K-2_7-9" class="reference"><a href="#cite_note-DRI_1986_CDOS68K-2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="Adaptations">Adaptations</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=FlexOS&action=edit&section=4" title="Edit section: Adaptations"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="IBM_4680_OS"><span class="anchor" id="4680_OS"></span><span class="anchor" id="4680OSV1"></span><span class="anchor" id="4680OSV2"></span><span class="anchor" id="4680OSV3"></span><span class="anchor" id="4680OSV4"></span><span class="anchor" id="4680OSV1R1"></span><span class="anchor" id="4680OSV1R2"></span><span class="anchor" id="4680OSV1R3"></span><span class="anchor" id="4680OSV2R1"></span><span class="anchor" id="4680OSV3R1"></span><span class="anchor" id="4680OSV4R1"></span>IBM 4680 OS</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=FlexOS&action=edit&section=5" title="Edit section: IBM 4680 OS"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Named IBM 4680 OS Version 1, <a href="/wiki/IBM" title="IBM">IBM</a> originally chose DR Concurrent DOS 286 as the basis of their <i>IBM 4680</i> computer for IBM Plant System products and <a href="/wiki/Point-of-Sale" class="mw-redirect" title="Point-of-Sale">Point-of-Sale</a> terminals in 1986.<sup id="cite_ref-InfoWorld_1986_Concurrent_32-0" class="reference"><a href="#cite_note-InfoWorld_1986_Concurrent-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-DRI_1986_IBM_10-2" class="reference"><a href="#cite_note-DRI_1986_IBM-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-CBR_1987_FlexOS-286_4-2" class="reference"><a href="#cite_note-CBR_1987_FlexOS-286-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Novell_2005_Linux_33-0" class="reference"><a href="#cite_note-Novell_2005_Linux-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> The last release of the IBM 4680 OS has been Version 4, before it was replaced by IBM 4690 Version 1.<sup id="cite_ref-IBM_1993_4690_34-0" class="reference"><a href="#cite_note-IBM_1993_4690-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> </p><p>Versions: </p> <ul><li>IBM 4680 Operating System Version 1 Release 1</li> <li>IBM 4680 Operating System Version 1 Release 2</li> <li>IBM 4680 Operating System Version 1 Release 3</li> <li>IBM 4680 Operating System Version 2 Release 1</li> <li>IBM 4680 Operating System Version 3 Release 1</li> <li>IBM 4680 Operating System Version 4 Release 1</li></ul> <div class="mw-heading mw-heading3"><h3 id="IBM_and_Toshiba_4690_OS"><span class="anchor" id="IBM_4690_OS"></span>IBM and Toshiba 4690 OS</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=FlexOS&action=edit&section=6" title="Edit section: IBM and Toshiba 4690 OS"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/4690_Operating_System" title="4690 Operating System">4690 Operating System</a></div> <p>In July 1993, IBM announced the adoption of FlexOS version 2.32 as the basis of their <a href="/wiki/IBM_4690_OS" class="mw-redirect" title="IBM 4690 OS">IBM 4690 OS</a> Version 1, to be pre-released on 24 September 1993<sup id="cite_ref-Novell_2005_Linux_33-1" class="reference"><a href="#cite_note-Novell_2005_Linux-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> and generally made available from 25 March 1994.<sup id="cite_ref-IBM_1993_4690_34-1" class="reference"><a href="#cite_note-IBM_1993_4690-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-IBM_2011_35-0" class="reference"><a href="#cite_note-IBM_2011-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup> FlexOS 2.32 supported 286 and 386 modes, had more efficient memory management, better console and pipe systems, and brought overall quality and performance improvements compared to the version that came with IBM 4680 OS Version 4.<sup id="cite_ref-IBM_1993_4690_34-2" class="reference"><a href="#cite_note-IBM_1993_4690-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> Further, it removed limits on the number of applications running concurrently due to its more efficient use of KOSPOOL.<sup id="cite_ref-IBM_1993_4690_34-3" class="reference"><a href="#cite_note-IBM_1993_4690-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> </p><p>To support <a href="/wiki/Java_(programming_language)" title="Java (programming language)">Java</a>, IBM 4690 OS Version 2 added support for <a href="/wiki/Long_filename" title="Long filename">long filenames</a> by means of a <a href="/wiki/Virtual_filesystem" class="mw-redirect" title="Virtual filesystem">virtual filesystem</a> (VFS) architecture and it introduced <a href="/wiki/FAT32" class="mw-redirect" title="FAT32">FAT32</a> volumes. </p><p>According to "The Year of the Store?", IHL Consulting Group/RIS News, IBM 4690 OS still had a market share of 12% in the <a href="/wiki/Point_of_sale" title="Point of sale">POS</a> register/client market in June 2005, when IBM was starting to phase it out in favour to <a href="/wiki/IBM_Retail_Environment_for_SUSE" class="mw-redirect" title="IBM Retail Environment for SUSE">IBM Retail Environment for SUSE</a> (IRES).<sup id="cite_ref-Novell_2005_Linux_33-2" class="reference"><a href="#cite_note-Novell_2005_Linux-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> </p><p>IBM continued to maintain 4690 OS up to April 2015, with the most recent version released by IBM in May 2012 being IBM 4690 OS Version 6 Release 3. </p><p>Toshiba released <a href="/wiki/Toshiba_4690_OS" class="mw-redirect" title="Toshiba 4690 OS">Toshiba 4690 OS</a> Version 6 Release 4 in January 2014 and Version 6 Release 5 in January 2016. </p> <div class="mw-heading mw-heading3"><h3 id="Siemens_S5-DOS/MT"><span id="Siemens_S5-DOS.2FMT"></span>Siemens S5-DOS/MT</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=FlexOS&action=edit&section=7" title="Edit section: Siemens S5-DOS/MT"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Siemens" title="Siemens">Siemens</a> used and still maintains FlexOS in their factory automation equipment as well. For example, their <a href="/wiki/Simatic" title="Simatic">Simatic</a> S5 <a href="/wiki/STEP-5" class="mw-redirect" title="STEP-5">STEP-5</a> operating system <a href="/wiki/S5-DOS/MT" class="mw-redirect" title="S5-DOS/MT">S5-DOS/MT</a> is based on FlexOS 386 with X/GEM, FlexNet and <a href="/wiki/Btrieve" title="Btrieve">Btrieve</a>, whereas the smaller <a href="/wiki/S5-DOS" class="mw-redirect" title="S5-DOS">S5-DOS</a> system, also present on these systems, is a variant of Digital Research's <a href="/wiki/Personal_CP/M-86" class="mw-redirect" title="Personal CP/M-86">Personal CP/M-86</a>. </p><p>Siemens industrial systems like COROS LS-B/FlexOS, COROS OS-B/FlexOS, GRACIS/FlexOS, <a href="/w/index.php?title=Teleperm_M&action=edit&redlink=1" class="new" title="Teleperm M (page does not exist)">Teleperm M</a><span class="noprint" style="font-size:85%; font-style: normal;"> [<a href="https://de.wikipedia.org/wiki/Teleperm_M" class="extiw" title="de:Teleperm M">de</a>]</span> OS-525 were FlexOS and X/GEM-based. </p><p>Computers such as the <a href="/w/index.php?title=Sicomp&action=edit&redlink=1" class="new" title="Sicomp (page does not exist)">Sicomp</a><span class="noprint" style="font-size:85%; font-style: normal;"> [<a href="https://de.wikipedia.org/wiki/SICOMP" class="extiw" title="de:SICOMP">de</a>]</span> PC 16-20 and the PC 32 series were available with FlexOS as well. </p> <div class="mw-heading mw-heading3"><h3 id="CTM">CTM</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=FlexOS&action=edit&section=8" title="Edit section: CTM"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The Japanese post office shared terminals <a href="/w/index.php?title=CTM_(Japanese_post)&action=edit&redlink=1" class="new" title="CTM (Japanese post) (page does not exist)">CTM</a><span class="noprint" style="font-size:85%; font-style: normal;"> [<a href="https://ja.wikipedia.org/wiki/CTM" class="extiw" title="ja:CTM">ja</a>]</span> III and CTM IV were based on FlexOS. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=FlexOS&action=edit&section=9" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Concurrent_DOS_286" class="mw-redirect" title="Concurrent DOS 286">Concurrent DOS 286</a></li> <li><a href="/wiki/Graphics_Environment_Manager" class="mw-redirect" title="Graphics Environment Manager">GEM</a></li> <li><a href="/wiki/IBM_4683" title="IBM 4683">IBM 4683</a></li> <li><a href="/wiki/IBM_4690_OS" class="mw-redirect" title="IBM 4690 OS">IBM 4690 OS</a></li> <li><a href="/wiki/IBM_4694" title="IBM 4694">IBM 4694</a></li> <li><a href="/wiki/PSOS_(real-time_operating_system)" title="PSOS (real-time operating system)">pSOS</a></li> <li><a href="/wiki/Distributed_Data_Management_Architecture" title="Distributed Data Management Architecture">Distributed Data Management Architecture</a> (DDM)</li> <li><a href="/wiki/Electronic_point_of_sale" class="mw-redirect" title="Electronic point of sale">Electronic point of sale</a> (EPOS)</li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=FlexOS&action=edit&section=10" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-Glass_1991_Infoworld-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-Glass_1991_Infoworld_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Glass_1991_Infoworld_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Glass_1991_Infoworld_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-Glass_1991_Infoworld_1-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFGlass1991" class="citation journal cs1">Glass, Brett (1991-05-06). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=VlAEAAAAMBAJ&pg=PA72">"Answer Line"</a>. <i><a href="/wiki/InfoWorld" title="InfoWorld">InfoWorld</a></i>: 72. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0199-6649">0199-6649</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=InfoWorld&rft.atitle=Answer+Line&rft.pages=72&rft.date=1991-05-06&rft.issn=0199-6649&rft.aulast=Glass&rft.aufirst=Brett&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DVlAEAAAAMBAJ%26pg%3DPA72&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Watt_1986_Reorg-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-Watt_1986_Reorg_2-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWatt1986" class="citation news cs1">Watt, Peggy (1986-10-27). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=nI091j0HhhwC&pg=PA95">"Digital Research tighens belt with layoffs, reorganization - Realign business units, product lines"</a>. <i><a href="/wiki/Computerworld" title="Computerworld">Computerworld</a> - The Newsweekly for the Computer Community</i>. Computer Industry. Vol. XX, no. 43. Monterey, California, USA: <a href="/wiki/CW_Communications,_Inc." class="mw-redirect" title="CW Communications, Inc.">CW Communications, Inc.</a> p. 95. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0010-4841">0010-4841</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20200216233625/https://books.google.de/books?id=nI091j0HhhwC&pg=PA95&lpg=PA95&redir_esc=y">Archived</a> from the original on 2020-02-16<span class="reference-accessdate">. Retrieved <span class="nowrap">2020-02-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Computerworld+-+The+Newsweekly+for+the+Computer+Community&rft.atitle=Digital+Research+tighens+belt+with+layoffs%2C+reorganization+-+Realign+business+units%2C+product+lines&rft.volume=XX&rft.issue=43&rft.pages=95&rft.date=1986-10-27&rft.issn=0010-4841&rft.aulast=Watt&rft.aufirst=Peggy&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DnI091j0HhhwC%26pg%3DPA95&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-BW_1991-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-BW_1991_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-BW_1991_3-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-BW_1991_3-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="http://tech-insider.org/personal-computers/research/1991/0717.html">"Novell and Digital Research sign definitive merger agreement"</a>. <i><a href="/wiki/Business_Wire" title="Business Wire">Business Wire</a></i>. 1991-07-17. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180818133749/https://tech-insider.org/personal-computers/research/1991/0717.html">Archived</a> from the original on 2018-08-18<span class="reference-accessdate">. Retrieved <span class="nowrap">2017-01-24</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Business+Wire&rft.atitle=Novell+and+Digital+Research+sign+definitive+merger+agreement&rft.date=1991-07-17&rft_id=http%3A%2F%2Ftech-insider.org%2Fpersonal-computers%2Fresearch%2F1991%2F0717.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-CBR_1987_FlexOS-286-4"><span class="mw-cite-backlink">^ <a href="#cite_ref-CBR_1987_FlexOS-286_4-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-CBR_1987_FlexOS-286_4-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-CBR_1987_FlexOS-286_4-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCBR1987" class="citation journal cs1">CBR, ed. (1987-01-15). <a rel="nofollow" class="external text" href="http://www.cbronline.com/news/digital_research_launches_flexos_286_real_time_manufacturing_operating_system">"Digital Research launches FlexOS 286 Real-Time Manufacturing Operating System"</a>. <i>Computer Business Review</i>. <a rel="nofollow" class="external text" href="https://archive.today/20130118190950/http://www.cbronline.com/news/digital_research_launches_flexos_286_real_time_manufacturing_operating_system">Archived</a> from the original on 2013-01-18<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-09-15</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Computer+Business+Review&rft.atitle=Digital+Research+launches+FlexOS+286+Real-Time+Manufacturing+Operating+System&rft.date=1987-01-15&rft_id=http%3A%2F%2Fwww.cbronline.com%2Fnews%2Fdigital_research_launches_flexos_286_real_time_manufacturing_operating_system&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Wein_2002-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-Wein_2002_5-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWein2002" class="citation web cs1">Wein, Josef "Joe" (2002). <a rel="nofollow" class="external text" href="https://joewein.de/gary.html">"Gary Kildall in England"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190403010811/https://joewein.de/gary.html">Archived</a> from the original on 2019-04-03<span class="reference-accessdate">. Retrieved <span class="nowrap">2019-04-03</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Gary+Kildall+in+England&rft.date=2002&rft.aulast=Wein&rft.aufirst=Josef+%22Joe%22&rft_id=https%3A%2F%2Fjoewein.de%2Fgary.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Holsworth_2006-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-Holsworth_2006_6-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHolsworth2006" class="citation web cs1">Holsworth, Francis "Frank" R. (2006-02-01). <a rel="nofollow" class="external text" href="https://archive.computerhistory.org/resources/access/moving_image/2017/02/102770341-02-01-acc.wmv">"Video: Frank Holsworth, developer"</a> (interview). Information Technology Corporate Histories Collection. <a href="/wiki/Computer_History_Museum" title="Computer History Museum">Computer History Museum</a>. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/CHMID_(identifier)" class="mw-redirect" title="CHMID (identifier)">CHM Catalog Number</a> <a rel="nofollow" class="external text" href="https://www.computerhistory.org/collections/catalog/102770341">102770341</a>. ITCHP 44403c1a3fd53. Lot Number X7847.2017. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190403232808/https://archive.computerhistory.org/resources/access/moving_image/2017/02/102770341-02-01-acc.wmv">Archived</a> from the original on 2019-04-03<span class="reference-accessdate">. Retrieved <span class="nowrap">2019-04-04</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Video%3A+Frank+Holsworth%2C+developer&rft.series=Information+Technology+Corporate+Histories+Collection&rft.pub=Computer+History+Museum&rft.date=2006-02-01&rft.aulast=Holsworth&rft.aufirst=Francis+%22Frank%22+R.&rft_id=https%3A%2F%2Farchive.computerhistory.org%2Fresources%2Faccess%2Fmoving_image%2F2017%2F02%2F102770341-02-01-acc.wmv&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-DRI_1986_CDOS68K-2-7"><span class="mw-cite-backlink">^ <a href="#cite_ref-DRI_1986_CDOS68K-2_7-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-DRI_1986_CDOS68K-2_7-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-DRI_1986_CDOS68K-2_7-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-DRI_1986_CDOS68K-2_7-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-DRI_1986_CDOS68K-2_7-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-DRI_1986_CDOS68K-2_7-5"><sup><i><b>f</b></i></sup></a> <a href="#cite_ref-DRI_1986_CDOS68K-2_7-6"><sup><i><b>g</b></i></sup></a> <a href="#cite_ref-DRI_1986_CDOS68K-2_7-7"><sup><i><b>h</b></i></sup></a> <a href="#cite_ref-DRI_1986_CDOS68K-2_7-8"><sup><i><b>i</b></i></sup></a> <a href="#cite_ref-DRI_1986_CDOS68K-2_7-9"><sup><i><b>j</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.cpm.z80.de/download/cdos2.zip">"Concurrent DOS 68K 1.2 - Developer Kit for Motorola VME/10 - Disk 2"</a>. 1986-08-06 [1986-04-08]<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-09-13</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Concurrent+DOS+68K+1.2+-+Developer+Kit+for+Motorola+VME%2F10+-+Disk+2&rft.date=1986-08-06&rft_id=http%3A%2F%2Fwww.cpm.z80.de%2Fdownload%2Fcdos2.zip&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span> (NB. Also contains header files from <a href="/wiki/Concurrent_DOS_286" class="mw-redirect" title="Concurrent DOS 286">Concurrent DOS 286</a>, and some hints on the existence of a <a href="/wiki/Concurrent_DOS_V60" class="mw-redirect" title="Concurrent DOS V60">Concurrent DOS V60</a>. STRUCT.H mentions <a href="/wiki/LOADALL" title="LOADALL">LOADALL</a> for "8086 emulation".)</span> </li> <li id="cite_note-CBR_1987_FlexOS-8"><span class="mw-cite-backlink">^ <a href="#cite_ref-CBR_1987_FlexOS_8-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-CBR_1987_FlexOS_8-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-CBR_1987_FlexOS_8-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCBR1987" class="citation journal cs1">CBR, ed. (1987-06-03). <a rel="nofollow" class="external text" href="http://www.cbronline.com/news/digital_research_shows_off_real_time_flexos_386">"Digital Research shows off Real-Time FlexOS 386"</a>. <i>Computer Business Review</i>. <a rel="nofollow" class="external text" href="https://archive.today/20130628213253/http://www.cbronline.com/news/digital_research_shows_off_real_time_flexos_386">Archived</a> from the original on 2013-06-28<span class="reference-accessdate">. Retrieved <span class="nowrap">2011-09-06</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Computer+Business+Review&rft.atitle=Digital+Research+shows+off+Real-Time+FlexOS+386&rft.date=1987-06-03&rft_id=http%3A%2F%2Fwww.cbronline.com%2Fnews%2Fdigital_research_shows_off_real_time_flexos_386&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-DRI_1986_FlexOS286-9"><span class="mw-cite-backlink">^ <a href="#cite_ref-DRI_1986_FlexOS286_9-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-DRI_1986_FlexOS286_9-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-DRI_1986_FlexOS286_9-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-DRI_1986_FlexOS286_9-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-DRI_1986_FlexOS286_9-4"><sup><i><b>e</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="http://www.bitsavers.org/pdf/digitalResearch/flexos/flexos_286//FlexOS_Suppliment_For_iAPX286_Computers_Nov86.pdf"><i>FlexOS Supplement for Intel iAPX 286-based Computers</i></a> <span class="cs1-format">(PDF)</span>. 1.3 (1 ed.). <a href="/wiki/Digital_Research,_Inc." class="mw-redirect" title="Digital Research, Inc.">Digital Research, Inc.</a> November 1986. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20210903210841/http://www.bitsavers.org/pdf/digitalResearch/flexos/flexos_286//FlexOS_Suppliment_For_iAPX286_Computers_Nov86.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 2021-09-03<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-08-14</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=FlexOS+Supplement+for+Intel+iAPX+286-based+Computers&rft.series=1.3&rft.edition=1&rft.pub=Digital+Research%2C+Inc.&rft.date=1986-11&rft_id=http%3A%2F%2Fwww.bitsavers.org%2Fpdf%2FdigitalResearch%2Fflexos%2Fflexos_286%2F%2FFlexOS_Suppliment_For_iAPX286_Computers_Nov86.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-DRI_1986_IBM-10"><span class="mw-cite-backlink">^ <a href="#cite_ref-DRI_1986_IBM_10-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-DRI_1986_IBM_10-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-DRI_1986_IBM_10-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation journal cs1"><a rel="nofollow" class="external text" href="http://corphist.computerhistory.org/corphist/documents/doc-446a17c4d826e.pdf?PHPSESSID=afc1edd71684f4d749c58203befec8f0">"IBM selects Concurrent DOS-286 for PC AT retail system"</a> <span class="cs1-format">(PDF)</span>. <i><a href="/wiki/European_Review_(Digital_Research)" class="mw-redirect" title="European Review (Digital Research)">European Review</a></i> (18). <a href="/wiki/Digital_Research" title="Digital Research">Digital Research</a>: 1. March 1986<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-09-15</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=European+Review&rft.atitle=IBM+selects+Concurrent+DOS-286+for+PC+AT+retail+system&rft.issue=18&rft.pages=1&rft.date=1986-03&rft_id=http%3A%2F%2Fcorphist.computerhistory.org%2Fcorphist%2Fdocuments%2Fdoc-446a17c4d826e.pdf%3FPHPSESSID%3Dafc1edd71684f4d749c58203befec8f0&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-DRI_1986_CDOS68K-1-11"><span class="mw-cite-backlink">^ <a href="#cite_ref-DRI_1986_CDOS68K-1_11-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-DRI_1986_CDOS68K-1_11-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-DRI_1986_CDOS68K-1_11-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.cpm.z80.de/download/cdos1.zip">"Concurrent DOS 68K 1.2 - Developer Kit for Motorola VME/10 - Disk 1"</a>. 1986-08-06 [1986-04-08]<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-09-13</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Concurrent+DOS+68K+1.2+-+Developer+Kit+for+Motorola+VME%2F10+-+Disk+1&rft.date=1986-08-06&rft_id=http%3A%2F%2Fwww.cpm.z80.de%2Fdownload%2Fcdos1.zip&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-DRI_1986_CDOS68K-3-12"><span class="mw-cite-backlink">^ <a href="#cite_ref-DRI_1986_CDOS68K-3_12-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-DRI_1986_CDOS68K-3_12-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-DRI_1986_CDOS68K-3_12-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.cpm.z80.de/download/cdos3.zip">"Concurrent DOS 68K 1.2 - Developer Kit for Motorola VME/10 - Disk 3"</a>. 1986-08-06 [1986-04-08]<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-09-13</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Concurrent+DOS+68K+1.2+-+Developer+Kit+for+Motorola+VME%2F10+-+Disk+3&rft.date=1986-08-06&rft_id=http%3A%2F%2Fwww.cpm.z80.de%2Fdownload%2Fcdos3.zip&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-DR_1986_131-13"><span class="mw-cite-backlink">^ <a href="#cite_ref-DR_1986_131_13-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-DR_1986_131_13-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="http://bitsavers.org/pdf/digitalResearch/flexos/flexos_286//1073-1001_FlexOS_286_V1.31_Release_Note_May87.pdf"><i>FlexOS 286 Version 1.31 - Release Note 01</i></a> <span class="cs1-format">(PDF)</span>. 1.31 (1 ed.). <a href="/wiki/Digital_Research,_Inc." class="mw-redirect" title="Digital Research, Inc.">Digital Research, Inc.</a> May 1987. 1073-1001-002<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-09-14</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=FlexOS+286+Version+1.31+-+Release+Note+01&rft.series=1.31&rft.edition=1&rft.pub=Digital+Research%2C+Inc.&rft.date=1987-05&rft_id=http%3A%2F%2Fbitsavers.org%2Fpdf%2FdigitalResearch%2Fflexos%2Fflexos_286%2F%2F1073-1001_FlexOS_286_V1.31_Release_Note_May87.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span><sup class="noprint Inline-Template"><span style="white-space: nowrap;">[<i><a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot"><span title=" Dead link tagged April 2024">permanent dead link</span></a></i><span style="visibility:hidden; color:transparent; padding-left:2px">‍</span>]</span></sup></span> </li> <li id="cite_note-Infoworld_1985_Super-14"><span class="mw-cite-backlink">^ <a href="#cite_ref-Infoworld_1985_Super_14-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Infoworld_1985_Super_14-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFoster1985" class="citation journal cs1">Foster, Edward (1985-05-13). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=2y4EAAAAMBAJ&pg=PA17">"Super DOS awaits new 80286 – Concurrent DOS 286 – delayed until Intel upgrades chip – offers Xenix's power and IBM PC compatibility"</a>. <i><a href="/wiki/InfoWorld" title="InfoWorld">InfoWorld</a></i>. <b>7</b> (19). <a href="/wiki/InfoWorld_Media_Group" class="mw-redirect" title="InfoWorld Media Group">InfoWorld Media Group</a>: 17–18. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0199-6649">0199-6649</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=InfoWorld&rft.atitle=Super+DOS+awaits+new+80286+%E2%80%93+Concurrent+DOS+286+%E2%80%93+delayed+until+Intel+upgrades+chip+%E2%80%93+offers+Xenix%27s+power+and+IBM+PC+compatibility&rft.volume=7&rft.issue=19&rft.pages=17-18&rft.date=1985-05-13&rft.issn=0199-6649&rft.aulast=Foster&rft.aufirst=Edward&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D2y4EAAAAMBAJ%26pg%3DPA17&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Infoworld_1985_80286-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-Infoworld_1985_80286_15-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFoster1985" class="citation journal cs1">Foster, Edward (1985-08-26). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=_y4EAAAAMBAJ&pg=PA21">"Intel shows new 80286 chip – Future of DRI's Concurrent DOS 286 still unclear after processor fixed"</a>. <i><a href="/wiki/InfoWorld" title="InfoWorld">InfoWorld</a></i>. <b>7</b> (34). <a href="/wiki/InfoWorld_Media_Group" class="mw-redirect" title="InfoWorld Media Group">InfoWorld Media Group</a>: 21. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0199-6649">0199-6649</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=InfoWorld&rft.atitle=Intel+shows+new+80286+chip+%E2%80%93+Future+of+DRI%27s+Concurrent+DOS+286+still+unclear+after+processor+fixed&rft.volume=7&rft.issue=34&rft.pages=21&rft.date=1985-08-26&rft.issn=0199-6649&rft.aulast=Foster&rft.aufirst=Edward&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D_y4EAAAAMBAJ%26pg%3DPA21&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-CBR_1988_DR-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-CBR_1988_DR_16-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCBR1988" class="citation magazine cs1">CBR, ed. (1988-04-05). "Digital Research, profitable for fiscal 1987, comes out of the closet". <i>Computer Business Review</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Computer+Business+Review&rft.atitle=Digital+Research%2C+profitable+for+fiscal+1987%2C+comes+out+of+the+closet&rft.date=1988-04-05&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-DRI_1990_Sold-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-DRI_1990_Sold_17-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDigital_Research1990" class="citation journal cs1"><a href="/wiki/Digital_Research" title="Digital Research">Digital Research</a> (1990-06-04). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=lDr9l3mBFcoC&pg=PP38">"Sold on FlexOS"</a>. <i><a href="/wiki/Computerworld" title="Computerworld">Computerworld</a></i> (Advertisement). <b>XXIV</b> (23)<span class="reference-accessdate">. Retrieved <span class="nowrap">2017-01-24</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Computerworld&rft.atitle=Sold+on+FlexOS&rft.volume=XXIV&rft.issue=23&rft.date=1990-06-04&rft.au=Digital+Research&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DlDr9l3mBFcoC%26pg%3DPP38&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Schulman_1994_Undocumented-DOS-18"><span class="mw-cite-backlink">^ <a href="#cite_ref-Schulman_1994_Undocumented-DOS_18-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Schulman_1994_Undocumented-DOS_18-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSchulmanBrownMaxeyMichels1994" class="citation book cs1">Schulman, Andrew; <a href="/wiki/Ralf_D._Brown" class="mw-redirect" title="Ralf D. Brown">Brown, Ralf D.</a>; Maxey, David; Michels, Raymond J.; Kyle, Jim (1994) [November 1993]. <span class="id-lock-registration" title="Free registration required"><a rel="nofollow" class="external text" href="https://archive.org/details/undocumenteddosp00andr_0/page/11"><i>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</i></a></span> (2 ed.). <a href="/wiki/Addison_Wesley" class="mw-redirect" title="Addison Wesley">Addison Wesley</a>. p. <a rel="nofollow" class="external text" href="https://archive.org/details/undocumenteddosp00andr_0/page/182">182</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-201-63287-X" title="Special:BookSources/0-201-63287-X"><bdi>0-201-63287-X</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Undocumented+DOS%3A+A+programmer%27s+guide+to+reserved+MS-DOS+functions+and+data+structures+-+expanded+to+include+MS-DOS+6%2C+Novell+DOS+and+Windows+3.1&rft.pages=182&rft.edition=2&rft.pub=Addison+Wesley&rft.date=1994&rft.isbn=0-201-63287-X&rft.aulast=Schulman&rft.aufirst=Andrew&rft.au=Brown%2C+Ralf+D.&rft.au=Maxey%2C+David&rft.au=Michels%2C+Raymond+J.&rft.au=Kyle%2C+Jim&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fundocumenteddosp00andr_0%2Fpage%2F11&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span> (xviii+856+vi pages, 3.5-inch floppy) Errata: <a rel="nofollow" class="external autonumber" href="https://web.archive.org/web/20190417215556/http://www.cs.cmu.edu/afs/cs/user/ralf/pub/books/UndocumentedDOS/errata.ud2">[1]</a><a rel="nofollow" class="external autonumber" href="https://web.archive.org/web/20190417212906/https://www.pcjs.org/pubs/pc/programming/Undocumented_DOS/#errata-2nd-edition">[2]</a></span> </li> <li id="cite_note-Scott_1991_Merger-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-Scott_1991_Merger_19-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFScott1991" class="citation news cs1">Scott, Karyl (1991-07-29). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=mVAEAAAAMBAJ&pg=PA33">"Novell/DRI merger to reap better client management"</a>. <i><a href="/wiki/InfoWorld" title="InfoWorld">InfoWorld</a></i>. Networking. Vol. 13, no. 30. <a href="/wiki/InfoWorld_Publishing_Co." class="mw-redirect" title="InfoWorld Publishing Co.">InfoWorld Publishing Co.</a> p. 33. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0199-6649">0199-6649</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20200209155946/https://books.google.de/books?id=mVAEAAAAMBAJ&pg=PA33&lpg=PA33&redir_esc=y">Archived</a> from the original on 2020-02-09<span class="reference-accessdate">. Retrieved <span class="nowrap">2017-01-21</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=InfoWorld&rft.atitle=Novell%2FDRI+merger+to+reap+better+client+management&rft.volume=13&rft.issue=30&rft.pages=33&rft.date=1991-07-29&rft.issn=0199-6649&rft.aulast=Scott&rft.aufirst=Karyl&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DmVAEAAAAMBAJ%26pg%3DPA33&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Allchin_1991-20"><span class="mw-cite-backlink"><b><a href="#cite_ref-Allchin_1991_20-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAllchin1992" class="citation web cs1"><a href="/wiki/Jim_Allchin" title="Jim Allchin">Allchin, Jim</a> (1992-05-27) [1991-07-17]. <a rel="nofollow" class="external text" href="http://antitrust.slated.org/www.iowaconsumercase.org/011607/0000/PX00838.pdf">"Novell/Digital Research reach definitive agreement…"</a> <span class="cs1-format">(PDF)</span> (Court document). Plaintiff's exhibit 828, <a href="/wiki/Comes_v._Microsoft" class="mw-redirect" title="Comes v. Microsoft">Comes v. Microsoft</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20161119074834/http://antitrust.slated.org/www.iowaconsumercase.org/011607/0000/PX00838.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 2016-11-19<span class="reference-accessdate">. Retrieved <span class="nowrap">2017-01-21</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Novell%2FDigital+Research+reach+definitive+agreement%E2%80%A6&rft.date=1992-05-27&rft.aulast=Allchin&rft.aufirst=Jim&rft_id=http%3A%2F%2Fantitrust.slated.org%2Fwww.iowaconsumercase.org%2F011607%2F0000%2FPX00838.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Novell_1995_NEST-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-Novell_1995_NEST_21-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.novell.com/news/press/archive/1995/05/pr00121.html">"Novell Announces RTOS Vendor Program Which Brings Integrated Networking Solutions to the Embedded Systems Marketplace"</a> (Press Release). <a href="/wiki/Novell" title="Novell">Novell</a>. 1995-05-23. <q>Because Novell used Integrated Systems' FlexOS during the development and testing of NEST, we are in the unique position of supporting it through both our real-time product lines pSOSystem for deeply embedded markets, and FlexOS for point of sale," said Moses Joseph, vice president of marketing for Integrated Systems. "Developers using the FlexOS development kit and the expanded pSOSystem/NEST package for everything from home security and entertainment to office automation and global communications applications, now have quick and easy access to the widest variety of standard networking protocols.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Novell+Announces+RTOS+Vendor+Program+Which+Brings+Integrated+Networking+Solutions+to+the+Embedded+Systems+Marketplace&rft.pub=Novell&rft.date=1995-05-23&rft_id=http%3A%2F%2Fwww.novell.com%2Fnews%2Fpress%2Farchive%2F1995%2F05%2Fpr00121.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-ISI_1998_pNDE-22"><span class="mw-cite-backlink">^ <a href="#cite_ref-ISI_1998_pNDE_22-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-ISI_1998_pNDE_22-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/19980219173150/http://www.isi.com/Products/pSOS/Networking/pNDE.html">"pSOSystem and the NEST Development Environment - Designing Embedded Applications with NetWare Connectivity"</a> (White paper). <a href="/wiki/Integrated_Systems,_Inc." class="mw-redirect" title="Integrated Systems, Inc.">Integrated Systems, Inc.</a> (ISI). 1998. Archived from <a rel="nofollow" class="external text" href="http://www.isi.com/Products/pSOS/Networking/pNDE.html">the original</a> on 1998-02-19.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=pSOSystem+and+the+NEST+Development+Environment+-+Designing+Embedded+Applications+with+NetWare+Connectivity&rft.pub=Integrated+Systems%2C+Inc.+%28ISI%29&rft.date=1998&rft_id=http%3A%2F%2Fwww.isi.com%2FProducts%2FpSOS%2FNetworking%2FpNDE.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-DRI_1986_FlexOSUserGuide-23"><span class="mw-cite-backlink"><b><a href="#cite_ref-DRI_1986_FlexOSUserGuide_23-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="http://www.bitsavers.org/pdf/digitalResearch/flexos/flexos_286//1073-2003_FlexOS_Users_Guide_V1.3_Nov86.pdf"><i>FlexOS User's Guide Version 1.3</i></a> <span class="cs1-format">(PDF)</span>. 1.3 (1 ed.). <a href="/wiki/Digital_Research" title="Digital Research">Digital Research</a>. November 1986. 1073-2003-001. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190330205506/http://www.bitsavers.org/pdf/digitalResearch/flexos/flexos_286//1073-2003_FlexOS_Users_Guide_V1.3_Nov86.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 2019-03-30<span class="reference-accessdate">. Retrieved <span class="nowrap">2019-04-23</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=FlexOS+User%27s+Guide+Version+1.3&rft.series=1.3&rft.edition=1&rft.pub=Digital+Research&rft.date=1986-11&rft_id=http%3A%2F%2Fwww.bitsavers.org%2Fpdf%2FdigitalResearch%2Fflexos%2Fflexos_286%2F%2F1073-2003_FlexOS_Users_Guide_V1.3_Nov86.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Freescale_2006_ColdFire-24"><span class="mw-cite-backlink">^ <a href="#cite_ref-Freescale_2006_ColdFire_24-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Freescale_2006_ColdFire_24-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.nxp.com/docs/en/product-brief/MCF5251PB.pdf">"MCF5251 Product Brief - ColdFire 32-Bit Processor"</a> <span class="cs1-format">(PDF)</span> (Product flyer) (Revision 0 ed.). <a href="/wiki/Freescale_Semiconductor,_Inc." class="mw-redirect" title="Freescale Semiconductor, Inc.">Freescale Semiconductor, Inc.</a> June 2006. MCF5251PB. <a rel="nofollow" class="external text" href="https://archive.today/20180915174712/https://www.nxp.com/docs/en/product-brief/MCF5251PB.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 2018-09-15<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-09-15</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=MCF5251+Product+Brief+-+ColdFire+32-Bit+Processor&rft.edition=Revision+0&rft.pub=Freescale+Semiconductor%2C+Inc.&rft.date=2006-06&rft_id=https%3A%2F%2Fwww.nxp.com%2Fdocs%2Fen%2Fproduct-brief%2FMCF5251PB.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Gallant_1984-25"><span class="mw-cite-backlink"><b><a href="#cite_ref-Gallant_1984_25-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGallant1984" class="citation journal cs1">Gallant, John (1984-01-23). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=dRR9VQBwdSIC&pg=PA6">"Digital Research, Monterey ink Unix-centered pact"</a>. <i><a href="/wiki/Computerworld" title="Computerworld">Computerworld</a></i>. <b>XVIII</b> (3): 6<span class="reference-accessdate">. Retrieved <span class="nowrap">2019-02-03</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Computerworld&rft.atitle=Digital+Research%2C+Monterey+ink+Unix-centered+pact&rft.volume=XVIII&rft.issue=3&rft.pages=6&rft.date=1984-01-23&rft.aulast=Gallant&rft.aufirst=John&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DdRR9VQBwdSIC%26pg%3DPA6&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Knox_1986_CDOS68K-26"><span class="mw-cite-backlink"><b><a href="#cite_ref-Knox_1986_CDOS68K_26-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKnox1986" class="citation newsgroup cs1">Knox, James M. (1986-06-22). <a rel="nofollow" class="external text" href="http://www.megalextoria.com/usenet-archive/news044f1/b64/mod/computers/68k/00000078.html">"Re: DRI Concurrent DOS for 68K"</a>. <a href="/wiki/Usenet_newsgroup" title="Usenet newsgroup">Newsgroup</a>: <a rel="nofollow" class="external text" href="news:mod.computers.68k">mod.computers.68k</a>. <a rel="nofollow" class="external text" href="https://archive.today/20180913210113/http://www.megalextoria.com/usenet-archive/news044f1/b64/mod/computers/68k/00000078.html">Archived</a> from the original on 2018-09-13<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-09-13</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Re%3A+DRI+Concurrent+DOS+for+68K&rft.pub=mod.computers.68k&rft.date=1986-06-22&rft.aulast=Knox&rft.aufirst=James+M.&rft_id=http%3A%2F%2Fwww.megalextoria.com%2Fusenet-archive%2Fnews044f1%2Fb64%2Fmod%2Fcomputers%2F68k%2F00000078.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Taetsch_1987-27"><span class="mw-cite-backlink">^ <a href="#cite_ref-Taetsch_1987_27-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Taetsch_1987_27-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHellerTaetsch1987" class="citation newsgroup cs1">Heller, Robert; Taetsch, Tom (1987-01-29) [1987-01-26, 1987-01-27]. <a rel="nofollow" class="external text" href="https://macgui.com/usenet/?group=78&start=80&id=25">"Concurrent DOS 68K: The word from DRI"</a>. <a href="/wiki/Usenet_newsgroup" title="Usenet newsgroup">Newsgroup</a>: <a rel="nofollow" class="external text" href="news:mod.computers.68k">mod.computers.68k</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20200103052706/https://macgui.com/usenet/?group=78&start=80&id=25">Archived</a> from the original on 2020-01-03<span class="reference-accessdate">. Retrieved <span class="nowrap">2010-01-03</span></span>. <q>[…] it is possible to purchase an implementation of CDOS-68K for the Motorola VME-10. The media it comes on is Motorola VME-10 5.25" floppies. […] CDOS-68K is the 68K version of CDOS-286 (which has now been updated and renamed to FlexOS 286). This CDOS-286/68K operating system was designed specifically to provide easy addition and deletion of I/O drivers and sub-drivers. Drivers can either be linked in to the O/S or kept external and dynamically loaded at boot time. […] CDOS-68K is at revision level 1.2, while CDOS-286 was upgraded to rev level 1.3 (at which point it became FlexOS 286). The significance of this to you is that no enhancements or maintenance of the 68K version is planned in the near future (unless a "major" OEM contract should happen). So the 68K O/S is pretty much being sold only on an "as is" basis. […]</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Concurrent+DOS+68K%3A+The+word+from+DRI.&rft.pub=mod.computers.68k&rft.date=1987-01-29&rft.aulast=Heller&rft.aufirst=Robert&rft.au=Taetsch%2C+Tom&rft_id=https%3A%2F%2Fmacgui.com%2Fusenet%2F%3Fgroup%3D78%26start%3D80%26id%3D25&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Swaine_1982_MPM286-28"><span class="mw-cite-backlink"><b><a href="#cite_ref-Swaine_1982_MPM286_28-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSwaine1982" class="citation journal cs1"><a href="/wiki/Michael_Swaine_(technical_author)" class="mw-redirect" title="Michael Swaine (technical author)">Swaine, Michael</a> (1982-04-05). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=ZjAEAAAAMBAJ&pg=PA4">"Homebrew Computer Club views Intel's superchip"</a>. <i><a href="/wiki/InfoWorld" title="InfoWorld">InfoWorld</a></i>. <b>4</b> (13). Palo Alto, CA, USA: 4. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20200107223947/https://books.google.com/books?id=ZjAEAAAAMBAJ&pg=PA4&lpg=PA4">Archived</a> from the original on 2020-01-07<span class="reference-accessdate">. Retrieved <span class="nowrap">2020-01-07</span></span>. <q>[…] <a href="/wiki/Digital_Research" title="Digital Research">Digital Research</a> is producing an operating system for the <a href="/wiki/Intel_80286" title="Intel 80286">286</a>. <a href="/wiki/MP/M-286" class="mw-redirect" title="MP/M-286">MP/M-286</a> will take advantage of the processor's memory management and protection and virtual memory support. Digital Research is promising "complete" compatibility with its <a href="/wiki/MP/M-86" class="mw-redirect" title="MP/M-86">MP/M-86</a> and <a href="/wiki/CP/M-86" title="CP/M-86">CP/M-86</a> for the <a href="/wiki/Intel_8086" title="Intel 8086">8086</a> processor. <a href="/wiki/Intel" title="Intel">Intel</a> is supplying Digital Research with the hardware to develop and test MP/M-286. […]</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=InfoWorld&rft.atitle=Homebrew+Computer+Club+views+Intel%27s+superchip&rft.volume=4&rft.issue=13&rft.pages=4&rft.date=1982-04-05&rft.aulast=Swaine&rft.aufirst=Michael&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DZjAEAAAAMBAJ%26pg%3DPA4&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Bidmead_1985_CCPM286-29"><span class="mw-cite-backlink"><b><a href="#cite_ref-Bidmead_1985_CCPM286_29-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBidmead2006" class="citation magazine cs1"><a href="/wiki/Christopher_H._Bidmead" title="Christopher H. Bidmead">Bidmead, Christopher H.</a> (2006-05-09) [1985-03-25]. <a rel="nofollow" class="external text" href="http://bidmeadia.blogspot.com/2006/05/surviving-big-blue.html">"Surviving Big Blue"</a>. <i><a href="/wiki/Doctor_Who_(magazine)" class="mw-redirect" title="Doctor Who (magazine)">Doctor Who</a></i>. Which Computer?. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20200107223658/http://bidmeadia.blogspot.com/2006/05/surviving-big-blue.html">Archived</a> from the original on 2020-01-07<span class="reference-accessdate">. Retrieved <span class="nowrap">2020-01-07</span></span>. <q>[…] Paul Bailey of <a href="/wiki/Digital_Research" title="Digital Research">Digital Research</a> keenly promotes this approach; it is his company that is supplying <a href="/wiki/International_Computers_Limited" title="International Computers Limited">ICL</a> and others with <a href="/wiki/Concurrent_DOS_286" class="mw-redirect" title="Concurrent DOS 286">Concurrent Dos-286</a>. This chameleon operating system allows ICL and other <a href="/wiki/Intel_80286" title="Intel 80286">80286</a> manufacturers to build machines that will be able to cope with all the existing body of IBM-PC software -- and at the same time promise multi-tasking, windowing and true concurrency, three features that together allow a single micro to do several things at once. […] Although no firm announcements have been made, it seems certain that by the end of the year <a href="/wiki/Applied_Computer_Techniques" class="mw-redirect" title="Applied Computer Techniques">ACT</a> will be offering a <a href="/w/index.php?title=Concurrent_CP/M-286&action=edit&redlink=1" class="new" title="Concurrent CP/M-286 (page does not exist)">Concurrent CP/M 286</a> machine to fuel its drive into the corporate market. But by this time it will have to contend with <a href="/wiki/IBM" title="IBM">IBM</a>'s own 80286 office micro, the PC/AT. […] IBM also have a software product in the offing that could pull the rug out from under the Concurrent contenders. Some 180K in size, <a href="/wiki/TopView" class="mw-redirect" title="TopView">TopView</a> is a program for IBM PC's and AT's that beefs up the operating system to provide windowing facilities for existing 'well behaved' standard packages. […]</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Doctor+Who&rft.atitle=Surviving+Big+Blue&rft.date=2006-05-09&rft.aulast=Bidmead&rft.aufirst=Christopher+H.&rft_id=http%3A%2F%2Fbidmeadia.blogspot.com%2F2006%2F05%2Fsurviving-big-blue.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-BYTE_1985_CDOS286-30"><span class="mw-cite-backlink"><b><a href="#cite_ref-BYTE_1985_CDOS286_30-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation journal cs1"><a rel="nofollow" class="external text" href="http://tech-insider.org/personal-computers/research/1985/05.html">"Concurrent DOS-286 Challenges Unix"</a>. <i><a href="/wiki/BYTE_Magazine" class="mw-redirect" title="BYTE Magazine">BYTE Magazine</a></i>. <b>10</b> (5): 375-377. May 1985. <a rel="nofollow" class="external text" href="https://archive.today/20180914120059/https://tech-insider.org/personal-computers/research/1985/05.html">Archived</a> from the original on 2018-09-14<span class="reference-accessdate">. Retrieved <span class="nowrap">2017-01-23</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=BYTE+Magazine&rft.atitle=Concurrent+DOS-286+Challenges+Unix&rft.volume=10&rft.issue=5&rft.pages=375-377&rft.date=1985-05&rft_id=http%3A%2F%2Ftech-insider.org%2Fpersonal-computers%2Fresearch%2F1985%2F05.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span> <a rel="nofollow" class="external autonumber" href="https://archive.org/stream/byte-magazine-1985-05/1985_05_BYTE_10-05_Multiprocessing#page/n376/mode/1up/search/concurrent">[3]</a></span> </li> <li id="cite_note-Meta_1986_HighC12-31"><span class="mw-cite-backlink"><b><a href="#cite_ref-Meta_1986_HighC12_31-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="http://www.bitsavers.org/pdf/metaware/High_C_Programmers_Guide_1.2_Concurrent_DOS_Sep85.pdf"><i>High C Programmer's Guide - Version 1.2 for Concurrent DOS</i></a> <span class="cs1-format">(PDF)</span> (1 ed.). Santa Cruz, CA, USA: <a href="/w/index.php?title=MetaWare_Incorporated&action=edit&redlink=1" class="new" title="MetaWare Incorporated (page does not exist)">MetaWare Incorporated</a>. 1986 [1985-09-15]<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-08-14</span></span>. <q>This is a guide to the operation of the High C compiler as implemented for the Concurrent DOS 286 1.2 or later operating system - hereafter abbreviated to just "Concurrent" per Digital Research custom - running on the Intel 80286 microprocessor and using the Intel Object-Module Format (OMF). The compiler generates code for any of the Intel 8086/88/186/188/286 family of microprocessors.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=High+C+Programmer%27s+Guide+-+Version+1.2+for+Concurrent+DOS&rft.place=Santa+Cruz%2C+CA%2C+USA&rft.edition=1&rft.pub=MetaWare+Incorporated&rft.date=1986&rft_id=http%3A%2F%2Fwww.bitsavers.org%2Fpdf%2Fmetaware%2FHigh_C_Programmers_Guide_1.2_Concurrent_DOS_Sep85.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-InfoWorld_1986_Concurrent-32"><span class="mw-cite-backlink"><b><a href="#cite_ref-InfoWorld_1986_Concurrent_32-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCalvoForbes1986" class="citation journal cs1">Calvo, Melissa; Forbes, Jim (1986-02-10). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=oi8EAAAAMBAJ&pg=PA12">"IBM to use a DRI operating system"</a>. <i><a href="/wiki/InfoWorld" title="InfoWorld">InfoWorld </a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">2011-09-06</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=InfoWorld&rft.atitle=IBM+to+use+a+DRI+operating+system&rft.date=1986-02-10&rft.aulast=Calvo&rft.aufirst=Melissa&rft.au=Forbes%2C+Jim&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Doi8EAAAAMBAJ%26pg%3DPA12&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-Novell_2005_Linux-33"><span class="mw-cite-backlink">^ <a href="#cite_ref-Novell_2005_Linux_33-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Novell_2005_Linux_33-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Novell_2005_Linux_33-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060117222003/http://www.novell.com/industries/retail/bestos.pdf">"How to choose the best OS for your point-of-sale"</a> <span class="cs1-format">(PDF)</span>. <a href="/wiki/Novell" title="Novell">Novell</a>. 2005. Archived from <a rel="nofollow" class="external text" href="http://www.novell.com/industries/retail/bestos.pdf">the original</a> <span class="cs1-format">(PDF)</span> on 2006-01-17<span class="reference-accessdate">. Retrieved <span class="nowrap">2012-01-10</span></span> – via <a href="/w/index.php?title=360Commerce&action=edit&redlink=1" class="new" title="360Commerce (page does not exist)">360Commerce</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=How+to+choose+the+best+OS+for+your+point-of-sale&rft.pub=Novell&rft.date=2005&rft_id=http%3A%2F%2Fwww.novell.com%2Findustries%2Fretail%2Fbestos.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span> (NB. This PDF has a short history of POS operating systems, also mentioning IBM 4680 and IBM 4690.)</span> </li> <li id="cite_note-IBM_1993_4690-34"><span class="mw-cite-backlink">^ <a href="#cite_ref-IBM_1993_4690_34-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-IBM_1993_4690_34-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-IBM_1993_4690_34-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-IBM_1993_4690_34-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFIBM1993" class="citation web cs1">IBM, ed. (June 1993). <a rel="nofollow" class="external text" href="http://www-01.ibm.com/common/ssi/cgi-bin/ssialias?infotype=an&subtype=ca&htmlfid=897/ENUS293-281&language=enus">"IBM 4690 OPERATING SYSTEM VERSION 1 - Announcement Letter Number 293-281 dated 1 June 1993 - Brief description of announcement, charges, and availability"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">2011-09-06</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=IBM+4690+OPERATING+SYSTEM+VERSION+1+-+Announcement+Letter+Number+293-281+dated+1+June+1993+-+Brief+description+of+announcement%2C+charges%2C+and+availability&rft.date=1993-06&rft_id=http%3A%2F%2Fwww-01.ibm.com%2Fcommon%2Fssi%2Fcgi-bin%2Fssialias%3Finfotype%3Dan%26subtype%3Dca%26htmlfid%3D897%2FENUS293-281%26language%3Denus&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> <li id="cite_note-IBM_2011-35"><span class="mw-cite-backlink"><b><a href="#cite_ref-IBM_2011_35-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFIBM" class="citation web cs1">IBM (ed.). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110930011638/http://www-03.ibm.com/products/retail/products/software/4690/index.html">"IBM 4690 Operating System"</a>. Archived from <a rel="nofollow" class="external text" href="http://www-03.ibm.com/products/retail/products/software/4690/index.html">the original</a> on 2011-09-30<span class="reference-accessdate">. Retrieved <span class="nowrap">2011-09-06</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=IBM+4690+Operating+System&rft_id=http%3A%2F%2Fwww-03.ibm.com%2Fproducts%2Fretail%2Fproducts%2Fsoftware%2F4690%2Findex.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=FlexOS&action=edit&section=11" title="Edit section: Further reading"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="http://www.bitsavers.org/pdf/digitalResearch/flexos/1073-2023_FlexOS_Programmers_Guide_V1.3_Nov86.pdf"><i>FlexOS Programmer's Guide Version 1.3</i></a> <span class="cs1-format">(PDF)</span>. 1.3 (1 ed.). <a href="/wiki/Digital_Research,_Inc." class="mw-redirect" title="Digital Research, Inc.">Digital Research, Inc.</a> November 1986. 1073-2023-001. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190324131117/http://bitsavers.org/pdf/digitalResearch/flexos/1073-2023_FlexOS_Programmers_Guide_V1.3_Nov86.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 2019-03-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-09-14</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=FlexOS+Programmer%27s+Guide+Version+1.3&rft.series=1.3&rft.edition=1&rft.pub=Digital+Research%2C+Inc.&rft.date=1986-11&rft_id=http%3A%2F%2Fwww.bitsavers.org%2Fpdf%2FdigitalResearch%2Fflexos%2F1073-2023_FlexOS_Programmers_Guide_V1.3_Nov86.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="http://www.bitsavers.org/pdf/digitalResearch/flexos/1073-2043_FlexOS_286_Programmers_Utilities_Guide_1986.pdf"><i>FlexOS 286 Programmer's Utilities Guide</i></a> <span class="cs1-format">(PDF)</span>. <a href="/wiki/Digital_Research,_Inc." class="mw-redirect" title="Digital Research, Inc.">Digital Research, Inc.</a> 1986. 1073-2043-001. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190324131135/http://bitsavers.org/pdf/digitalResearch/flexos/1073-2043_FlexOS_286_Programmers_Utilities_Guide_1986.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 2019-03-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-09-14</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=FlexOS+286+Programmer%27s+Utilities+Guide&rft.pub=Digital+Research%2C+Inc.&rft.date=1986&rft_id=http%3A%2F%2Fwww.bitsavers.org%2Fpdf%2FdigitalResearch%2Fflexos%2F1073-2043_FlexOS_286_Programmers_Utilities_Guide_1986.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="http://www.bitsavers.org/pdf/digitalResearch/flexos/1082-2003_FlexNet_Network_Operating_System_V1.3_Users_Guide_Nov86.pdf"><i>FlexNet Network Operating System User's Guide</i></a> <span class="cs1-format">(PDF)</span>. 1.3 (1 ed.). <a href="/wiki/Digital_Research,_Inc." class="mw-redirect" title="Digital Research, Inc.">Digital Research, Inc.</a> November 1986. 1082-2003-001. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190324131146/http://bitsavers.org/pdf/digitalResearch/flexos/1082-2003_FlexNet_Network_Operating_System_V1.3_Users_Guide_Nov86.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 2019-03-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-09-14</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=FlexNet+Network+Operating+System+User%27s+Guide&rft.series=1.3&rft.edition=1&rft.pub=Digital+Research%2C+Inc.&rft.date=1986-11&rft_id=http%3A%2F%2Fwww.bitsavers.org%2Fpdf%2FdigitalResearch%2Fflexos%2F1082-2003_FlexNet_Network_Operating_System_V1.3_Users_Guide_Nov86.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></li> <li><a rel="nofollow" class="external text" href="http://www.retrotechnology.com/dri/dri_16bit.html#flex">Concurrent DOS 286, FlexOS, IBM 4690</a></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation cs2 cs1-prop-foreign-lang-source"><a rel="nofollow" class="external text" href="https://cache.industry.siemens.com/dl/files/641/18323641/att_53245/v1/C79000-G8000-C522_04.pdf"><i>TELEPERM M - Bedien- und Beobachtungssystem OS 525 -Handbuch</i></a> <span class="cs1-format">(PDF)</span> (in German), Gerätewerk Karlsruhe, Germany: <a href="/wiki/Siemens_Aktiengesellschaft" class="mw-redirect" title="Siemens Aktiengesellschaft">Siemens Aktiengesellschaft</a>, 1997, C79000-G8000-C522-04, <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180915084602/https://cache.industry.siemens.com/dl/files/641/18323641/att_53245/v1/C79000-G8000-C522_04.pdf">archived</a> <span class="cs1-format">(PDF)</span> from the original on 2018-09-15<span class="reference-accessdate">, retrieved <span class="nowrap">2019-04-23</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=TELEPERM+M+-+Bedien-+und+Beobachtungssystem+OS+525+-Handbuch&rft.place=Ger%C3%A4tewerk+Karlsruhe%2C+Germany&rft.pub=Siemens+Aktiengesellschaft&rft.date=1997&rft_id=https%3A%2F%2Fcache.industry.siemens.com%2Fdl%2Ffiles%2F641%2F18323641%2Fatt_53245%2Fv1%2FC79000-G8000-C522_04.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlexOS" class="Z3988"></span></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output .navbox-list-with-group{text-align:left;border-left-width:2px;border-left-style:solid}.mw-parser-output tr+tr>.navbox-abovebelow,.mw-parser-output tr+tr>.navbox-group,.mw-parser-output tr+tr>.navbox-image,.mw-parser-output tr+tr>.navbox-list{border-top:2px solid #fdfdfd}.mw-parser-output .navbox-title{background-color:#ccf}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="Digital_Research" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="3"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Digital_Research" title="Template:Digital Research"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Digital_Research" title="Template talk:Digital Research"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Digital_Research" title="Special:EditPage/Template:Digital Research"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Digital_Research" style="font-size:114%;margin:0 4em"><a href="/wiki/Digital_Research" title="Digital Research">Digital Research</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">People</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Gary_Kildall" title="Gary Kildall">Gary Kildall</a></li> <li><a href="/wiki/Dorothy_McEwen_Kildall" title="Dorothy McEwen Kildall">Dorothy McEwen Kildall</a></li> <li><a href="/wiki/Gordon_Eubanks" title="Gordon Eubanks">Gordon Eubanks</a></li> <li><a href="/wiki/Tom_Rolander" title="Tom Rolander">Tom Rolander</a></li> <li><a href="/wiki/Kathryn_Strutynski" title="Kathryn Strutynski">Kathryn Strutynski</a></li> <li><a href="/wiki/Edward_R._McCracken" title="Edward R. McCracken">Edward R. McCracken</a></li></ul> </div></td><td class="noviewer navbox-image" rowspan="3" style="width:1px;padding:0 0 0 2px"><div><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Digital_Research_Logo.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/16/Digital_Research_Logo.svg/110px-Digital_Research_Logo.svg.png" decoding="async" width="110" height="38" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/16/Digital_Research_Logo.svg/165px-Digital_Research_Logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/16/Digital_Research_Logo.svg/220px-Digital_Research_Logo.svg.png 2x" data-file-width="2869" data-file-height="1000" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Products</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Programming_language" title="Programming language">Programming<br />languages</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/PL/M" title="PL/M">PL/M</a></li> <li><a href="/wiki/CBASIC" title="CBASIC">CBASIC</a></li> <li><a href="/wiki/Dr._Logo" class="mw-redirect" title="Dr. Logo">Dr. Logo</a></li> <li><a href="/wiki/Dr._Scheme" class="mw-redirect" title="Dr. Scheme">Dr. Scheme</a></li> <li><a href="/wiki/Atari_Pascal" title="Atari Pascal">Atari Pascal</a></li> <li><a href="/wiki/Pascal/MT%2B" title="Pascal/MT+">Pascal/MT+</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Software" title="Software">Software</a>,<br />technology</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/BatteryMAX" title="BatteryMAX">BatteryMAX</a></li> <li><a href="/wiki/CMD_file_(CP/M)" title="CMD file (CP/M)">CMD file</a></li> <li><a href="/wiki/COM_file" title="COM file">COM file</a></li> <li><a href="/wiki/DOS_Protected_Mode_Services" title="DOS Protected Mode Services">DOS Protected Mode Services</a></li> <li><a href="/wiki/Dynamic_debugging_technique" title="Dynamic debugging technique">Dynamic Debugging Tool</a></li> <li><a href="/wiki/File_Control_Block" title="File Control Block">File Control Block</a></li> <li><a href="/wiki/Graphics_Environment_Manager" class="mw-redirect" title="Graphics Environment Manager">GEM</a> <ul><li><a href="/wiki/GEM_character_set" title="GEM character set">GEM character set</a></li></ul></li> <li><a href="/wiki/Peripheral_Interchange_Program" title="Peripheral Interchange Program">Peripheral Interchange Program</a></li> <li><a href="/wiki/Resource_construction_set" title="Resource construction set">Resource construction set</a></li> <li><a href="/wiki/ViewMAX" title="ViewMAX">ViewMAX</a></li> <li><a href="/wiki/XLT86" class="mw-redirect" title="XLT86">XLT86</a></li> <li><a href="/wiki/Zero_page_(CP/M)" title="Zero page (CP/M)">Zero page</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Operating_system" title="Operating system">Operating systems</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/CP/M" title="CP/M">CP/M</a></li> <li><a href="/wiki/CP/M-86" title="CP/M-86">CP/M-86</a></li> <li><a href="/wiki/DOS_Plus" title="DOS Plus">DOS Plus</a></li> <li><a href="/wiki/DR-DOS" title="DR-DOS">DR-DOS</a></li> <li><a class="mw-selflink selflink">FlexOS</a></li> <li><a href="/wiki/IMDOS" title="IMDOS">IMDOS</a></li> <li><a href="/wiki/MP/M" title="MP/M">MP/M</a></li> <li><a href="/wiki/Multiuser_DOS" title="Multiuser DOS">Multiuser DOS</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/CPMulator" title="CPMulator">CPMulator</a></li> <li><a href="/wiki/Star_Trek_project" title="Star Trek project">Star Trek project</a></li> <li><a href="/wiki/List_of_computers_running_CP/M" title="List of computers running CP/M">List of computers running CP/M</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="3"><div><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Digital_Research" title="Category:Digital Research">Category</a></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Real-time_operating_systems_(RTOS)" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Real-time_operating_systems" title="Template:Real-time operating systems"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Real-time_operating_systems" title="Template talk:Real-time operating systems"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Real-time_operating_systems" title="Special:EditPage/Template:Real-time operating systems"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Real-time_operating_systems_(RTOS)" style="font-size:114%;margin:0 4em"><a href="/wiki/Real-time_operating_system" title="Real-time operating system">Real-time operating systems</a> (RTOS)</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Operating_system" title="Operating system">Operating<br />systems</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/POSIX" title="POSIX">POSIX</a> support</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Unix-like" title="Unix-like">Unix-like</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/DNIX" title="DNIX">DNIX</a></i></li> <li><a href="/wiki/Junos_OS" title="Junos OS">Junos OS</a></li> <li><a href="/wiki/LynxOS" title="LynxOS">LynxOS</a></li> <li><i><a href="/wiki/Multi-Environment_Real-Time" title="Multi-Environment Real-Time">Multi-Environment Real-Time</a></i>^ (<i>MERT</i> – <i>Unix-RT</i>)</li> <li><i><a href="/wiki/OS2000" title="OS2000">OS2000</a></i></li> <li><a href="/wiki/QNX" title="QNX">QNX</a>^</li> <li><a href="/wiki/Real-Time_Linux" class="mw-redirect" title="Real-Time Linux">Real-Time Linux</a>°</li> <li><a href="/wiki/RTLinux" title="RTLinux">RTLinux</a>°</li> <li><i><a href="/wiki/UNOS_(operating_system)" title="UNOS (operating system)">UNOS</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/LiteOS" title="LiteOS">LiteOS</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/LiteOS" title="LiteOS">LiteOS</a></i>°</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Partial</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/ChorusOS" title="ChorusOS">ChorusOS</a></i>^</li> <li><a href="/wiki/Integrity_(operating_system)" title="Integrity (operating system)">Integrity</a>^</li> <li><a href="/wiki/Nucleus_RTOS" title="Nucleus RTOS">Nucleus RTOS</a>^</li> <li><a href="/wiki/NuttX" title="NuttX">NuttX</a>^°</li> <li><a href="/wiki/Operating_System_Embedded" class="mw-redirect" title="Operating System Embedded">Operating System Embedded</a>^ (OSE)</li> <li><a href="/wiki/PX5_RTOS" title="PX5 RTOS">PX5 RTOS</a>^</li> <li><a href="/wiki/RIOT_(operating_system)" title="RIOT (operating system)">RIOT</a>^°</li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/TRON_project" title="TRON project">TRON</a> support</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ITRON_project" title="ITRON project">ITRON project</a></li> <li><a href="/wiki/T-Kernel" title="T-Kernel">T-Kernel</a> <ul><li><a href="/wiki/Micro_T-Kernel" title="Micro T-Kernel">Micro T-Kernel</a></li> <li><a href="/wiki/T-Engine_Forum" title="T-Engine Forum">T-Engine Forum</a> (organization)</li> <li><a href="/wiki/T-License" title="T-License">T-License</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Partial</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ECos" title="ECos">eCos</a>°</li> <li><a href="/wiki/RTEMS" title="RTEMS">RTEMS</a>°</li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Capability-based_security" title="Capability-based security">Capability-based</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/EROS_(microkernel)" title="EROS (microkernel)">EROS</a></i>^°</li> <li><a href="/wiki/SeL4" class="mw-redirect" title="SeL4">seL4</a>^°</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Java_virtual_machine" title="Java virtual machine">Java virtual machine</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/JavaOS#Chorus/Jazz" title="JavaOS">Chorus/Jazz</a></i>^ (<i><a href="/wiki/JavaOS" title="JavaOS">JavaOS</a></i> + <i><a href="/wiki/ChorusOS" title="ChorusOS">ChorusOS</a></i>^)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/DOS" title="DOS">DOS</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Multiuser_DOS" title="Multiuser DOS">Multiuser DOS</a></i> <ul><li><i><a href="/wiki/Concurrent_DOS" class="mw-redirect" title="Concurrent DOS">Concurrent DOS</a></i></li> <li><i><a class="mw-selflink selflink">FlexOS</a></i></li> <li><i><a href="/wiki/REAL/32" class="mw-redirect" title="REAL/32">REAL/32</a></i></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/L4_microkernel_family" title="L4 microkernel family">L4</a> kernel</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/L4Linux" title="L4Linux">L<sup>4</sup>Linux</a>^°</li> <li><a href="/wiki/PikeOS" title="PikeOS">PikeOS</a>^</li> <li><i><a href="/wiki/REX_OS" title="REX OS">REX OS</a></i>^</li> <li><a href="/wiki/Wombat_(operating_system)" title="Wombat (operating system)">Wombat</a>^°</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Psion_(company)" title="Psion (company)">Psion</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/EKA2" title="EKA2">EKA2</a></i>^° kernel → <i><a href="/wiki/Symbian" title="Symbian">Symbian</a> OS</i>^°</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Microsoft" title="Microsoft">Microsoft</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ThreadX" title="ThreadX">ThreadX</a>^</li> <li><a href="/wiki/Windows_Embedded_Compact" title="Windows Embedded Compact">Windows Embedded Compact</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/IBM" title="IBM">IBM</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/4680_OS" class="mw-redirect" title="4680 OS">4680 OS</a></i></li> <li><i><a href="/wiki/4690_Operating_System" title="4690 Operating System">4690 OS</a></i></li> <li><a href="/wiki/Transaction_Processing_Facility" title="Transaction Processing Facility">Transaction Processing Facility</a> (TPF)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Texas_Instruments" title="Texas Instruments">Texas Instruments</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/DSOS" title="DSOS">DSOS</a></i></li> <li><a href="/wiki/TI-RTOS#RTOS_kernel_overview" title="TI-RTOS">TI-RTOS Kernel</a>^°</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Digital_Equipment_Corporation" title="Digital Equipment Corporation">DEC</a> <a href="/wiki/PDP-11" title="PDP-11">PDP-11</a> <a href="/wiki/VAX" title="VAX">VAX</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/RSX-11" title="RSX-11">RSX-11</a></i></li> <li><i><a href="/wiki/RT-11" title="RT-11">RT-11</a></i></li> <li><i><a href="/wiki/VAXELN" title="VAXELN">VAXELN</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Low resource</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ChibiOS/RT" title="ChibiOS/RT">ChibiOS/RT</a>^°</li> <li><a href="/wiki/Contiki" title="Contiki">Contiki</a>°</li> <li><a href="/wiki/ERIKA_Enterprise" title="ERIKA Enterprise">ERIKA Enterprise</a>°</li> <li>FunkOS°</li> <li><a href="/wiki/Apache_Mynewt" title="Apache Mynewt">Mynewt</a>°</li> <li><i><a href="/wiki/Nano-RK" title="Nano-RK">Nano-RK</a></i>°</li> <li><a href="/wiki/OpenComRTOS" title="OpenComRTOS">OpenComRTOS</a>^</li> <li><a href="/wiki/PX5_RTOS" title="PX5 RTOS">PX5 RTOS</a>^</li> <li><a href="/wiki/RT-Thread" title="RT-Thread">RT-Thread</a>° Nano</li> <li><a href="/wiki/RIOT_(operating_system)" title="RIOT (operating system)">RIOT</a>°</li> <li><a href="/wiki/ThreadX" title="ThreadX">ThreadX</a>^</li> <li><a href="/wiki/Zephyr_(operating_system)" title="Zephyr (operating system)">Zephyr</a>^°</li></ul> </div></td></tr></tbody></table><div> <ul><li><i><a href="/wiki/BeRTOS" title="BeRTOS">BeRTOS</a></i>^°</li> <li><i><a href="/wiki/DioneOS" title="DioneOS">DioneOS</a></i></li> <li><a href="/wiki/Segger_Microcontroller_Systems" title="Segger Microcontroller Systems">embOS</a></li> <li><a href="/wiki/FreeRTOS" title="FreeRTOS">FreeRTOS</a>^°</li> <li><a href="/wiki/Micro-Controller_Operating_Systems" title="Micro-Controller Operating Systems">µC/OS</a>^°</li> <li><a href="/wiki/Green_Hills_Software#Real-time_operating_systems" title="Green Hills Software">µ-velOSity</a>^</li> <li><a href="/wiki/MQX" title="MQX">MQX</a>^</li> <li><a href="/wiki/OS-9" title="OS-9">OS-9</a> (<a href="/wiki/Microware" title="Microware">Microware</a>)</li> <li><a href="/wiki/Phantom_OS" title="Phantom OS">Phantom OS</a>^°</li> <li><i><a href="/wiki/PSOS_(real-time_operating_system)" title="PSOS (real-time operating system)">pSOS</a></i></li> <li><i><a href="/wiki/RMX_(operating_system)" title="RMX (operating system)">RMX</a></i></li> <li><a href="/wiki/RT-Thread" title="RT-Thread">RT-Thread</a>° Standard</li> <li><a href="/wiki/ScreenOS" title="ScreenOS">ScreenOS</a></li> <li><i><a href="/wiki/Sintran_III" title="Sintran III">Sintran III</a></i></li> <li><i><a href="/wiki/THEOS" title="THEOS">THEOS</a></i></li> <li><i><a href="/wiki/Thoth_(operating_system)" title="Thoth (operating system)">Thoth</a></i>^ → <i><a href="/wiki/Harmony_(operating_system)" title="Harmony (operating system)">Harmony</a></i>^</li> <li><a href="/wiki/Versatile_Real-Time_Executive" title="Versatile Real-Time Executive">VRTX</a>^</li> <li><a href="/wiki/VxWorks" title="VxWorks">VxWorks</a></li> <li><a href="/wiki/EulerOS" title="EulerOS">UniProton</a></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Software_framework" title="Software framework">Frameworks</a>, <a href="/wiki/Software_development_kit" title="Software development kit">kits</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <li><a href="/wiki/Robot_Operating_System" title="Robot Operating System">Robot Operating System</a>° 2</li> <li><a href="/wiki/RTAI" title="RTAI">RTAI</a>°</li> <li><a href="/wiki/TI-RTOS" title="TI-RTOS">TI-RTOS</a>^°</li> <li><a href="/wiki/Xenomai" title="Xenomai">Xenomai</a>°</li> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Programmer" title="Programmer">Developers</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Gordon_Bell_(QNX)" title="Gordon Bell (QNX)">Gordon Bell</a></li> <li><a href="/wiki/David_Cheriton" title="David Cheriton">David Cheriton</a></li> <li><a href="/wiki/Dave_Cutler" title="Dave Cutler">Dave Cutler</a></li> <li><a href="/wiki/Dan_Dodge" title="Dan Dodge">Dan Dodge</a></li> <li><a href="/wiki/Adam_Dunkels" title="Adam Dunkels">Adam Dunkels</a></li> <li><a href="/wiki/Ken_Sakamura" title="Ken Sakamura">Ken Sakamura</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><i>Italics</i> <b>= discontinued</b></li> <li><b>^ = <a href="/wiki/Microkernel" title="Microkernel">Microkernel</a></b></li> <li><b>° = <a href="/wiki/Open-source_software" title="Open-source software">Open-source software</a></b><br /><span class="noviewer" typeof="mw:File"><span title="List-Class article"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/16px-Symbol_list_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/23px-Symbol_list_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/31px-Symbol_list_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <b><a href="/wiki/Comparison_of_real-time_operating_systems" title="Comparison of real-time operating systems">Comparison</a></b> <span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <b><a href="/wiki/Category:Real-time_operating_systems" title="Category:Real-time operating systems">Category</a></b></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Disk_operating_systems_(DOS)" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Disk_operating_systems" title="Template:Disk operating systems"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Disk_operating_systems" title="Template talk:Disk operating systems"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Disk_operating_systems" title="Special:EditPage/Template:Disk operating systems"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Disk_operating_systems_(DOS)" style="font-size:114%;margin:0 4em"><a href="/wiki/Disk_operating_system" title="Disk operating system">Disk operating systems</a> (DOS)</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">MS-DOS, IBM PC DOS,<br />compatible systems</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td class="navbox-abovebelow" colspan="2"><div id="*API_*Timeline_*Comparison_*Commands_*Games"> <ul><li><a href="/wiki/DOS_API" title="DOS API">API</a></li> <li><a href="/wiki/Timeline_of_DOS_operating_systems" title="Timeline of DOS operating systems">Timeline</a></li> <li><a href="/wiki/Comparison_of_DOS_operating_systems" title="Comparison of DOS operating systems">Comparison</a></li> <li><a href="/wiki/List_of_DOS_commands" title="List of DOS commands">Commands</a></li> <li><a href="/wiki/Index_of_DOS_games" title="Index of DOS games">Games</a></li></ul> </div></td></tr></tbody></table><div> <ul><li><a href="/wiki/MS-DOS" title="MS-DOS">MS-DOS</a> <ul><li><a href="/wiki/MS-DOS_4.0_(multitasking)" title="MS-DOS 4.0 (multitasking)">Multitasking MS-DOS 4.0/4.1</a></li> <li><a href="/wiki/MS-DOS_7" title="MS-DOS 7">MS-DOS 7</a></li></ul></li> <li><a href="/wiki/IBM_PC_DOS" title="IBM PC DOS">IBM PC DOS</a></li> <li><a href="/wiki/DOS/V" title="DOS/V">DOS/V</a></li> <li><a href="/wiki/DR-DOS" title="DR-DOS">DR-DOS</a></li> <li><a href="/wiki/H-DOS" class="mw-redirect" title="H-DOS">H-DOS</a></li> <li><a href="/wiki/Novell_DOS" class="mw-redirect" title="Novell DOS">Novell DOS</a></li> <li><a href="/wiki/ROM-DOS" class="mw-redirect" title="ROM-DOS">ROM-DOS</a></li> <li><a href="/wiki/SISNE_plus" title="SISNE plus">SISNE plus</a></li> <li><a href="/wiki/PTS-DOS" title="PTS-DOS">PTS-DOS</a></li> <li><a href="/wiki/FreeDOS" title="FreeDOS">FreeDOS</a></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other <a href="/wiki/X86" title="X86">x86</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <li><a href="/wiki/IBM_4680_OS" class="mw-redirect" title="IBM 4680 OS">4680 OS</a></li> <li><a href="/wiki/4690_OS" class="mw-redirect" title="4690 OS">4690 OS</a></li> <li><a href="/wiki/86-DOS" title="86-DOS">86-DOS</a></li> <li><a href="/wiki/ADOS_(Russian_operating_system)" class="mw-redirect" title="ADOS (Russian operating system)">ADOS</a></li> <li><a href="/wiki/Concurrent_CP/M-86" class="mw-redirect" title="Concurrent CP/M-86">Concurrent CP/M-86</a></li> <li><a href="/wiki/Concurrent_DOS" class="mw-redirect" title="Concurrent DOS">Concurrent DOS</a></li> <li><a href="/wiki/CP/M-86" title="CP/M-86">CP/M-86</a></li> <li><a href="/wiki/CP/K" class="mw-redirect" title="CP/K">CP/K</a></li> <li><a href="/wiki/Datapac_System_Manager" class="mw-redirect" title="Datapac System Manager">Datapac System Manager</a></li> <li><a href="/wiki/DOS_Plus" title="DOS Plus">DOS Plus</a></li> <li><a href="/wiki/K8918-OS" class="mw-redirect" title="K8918-OS">K8918-OS</a></li> <li><a class="mw-selflink selflink">FlexOS</a></li> <li><a href="/wiki/MP/M-86" class="mw-redirect" title="MP/M-86">MP/M-86</a></li> <li><a href="/wiki/Multiuser_DOS" title="Multiuser DOS">Multiuser DOS</a></li> <li><a href="/wiki/NetWare_PalmDOS" class="mw-redirect" title="NetWare PalmDOS">NetWare PalmDOS</a></li> <li><a href="/wiki/Novell_DOS" class="mw-redirect" title="Novell DOS">Novell DOS</a></li> <li><a href="/wiki/OpenDOS" class="mw-redirect" title="OpenDOS">OpenDOS</a></li> <li><a href="/wiki/PC-MOS/386" title="PC-MOS/386">PC-MOS/386</a></li> <li><a href="/wiki/REAL/32" class="mw-redirect" title="REAL/32">REAL/32</a></li> <li><a href="/wiki/SB-86" class="mw-redirect" title="SB-86">SB-86</a></li> <li><a href="/wiki/SCP1700" class="mw-redirect" title="SCP1700">SCP1700</a></li> <li><a href="/wiki/Towns_OS" class="mw-redirect" title="Towns OS">Towns OS</a></li> <li><a href="/wiki/TurboDOS" title="TurboDOS">TurboDOS</a></li> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other platforms</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/AmigaDOS" title="AmigaDOS">AmigaDOS</a></li> <li><a href="/wiki/AMSDOS" title="AMSDOS">AMSDOS</a></li> <li><a href="/wiki/ANDOS" title="ANDOS">ANDOS</a></li> <li><a href="/wiki/Apple_DOS" title="Apple DOS">Apple DOS</a></li> <li><a href="/wiki/Apple_ProDOS" title="Apple ProDOS">Apple ProDOS</a></li> <li><a href="/wiki/Apple_SOS" title="Apple SOS">Apple SOS</a></li> <li><a href="/wiki/Atari_DOS" title="Atari DOS">Atari DOS</a></li> <li><a href="/wiki/Atari_TOS" title="Atari TOS">Atari TOS</a></li> <li><a href="/wiki/BW-DOS" class="mw-redirect" title="BW-DOS">BW-DOS</a></li> <li><a href="/wiki/Commodore_DOS" title="Commodore DOS">Commodore DOS</a></li> <li><a href="/wiki/Concurrent_DOS_68K" class="mw-redirect" title="Concurrent DOS 68K">Concurrent DOS 68K</a></li> <li><a href="/wiki/Concurrent_DOS_V60" class="mw-redirect" title="Concurrent DOS V60">Concurrent DOS V60</a></li> <li><a href="/wiki/CP/M" title="CP/M">CP/M</a></li> <li><a href="/wiki/Cromemco_DOS" title="Cromemco DOS">Cromemco DOS</a></li> <li><a href="/wiki/CSI-DOS" title="CSI-DOS">CSI-DOS</a></li> <li><a href="/wiki/DEC_BATCH-11/DOS-11" title="DEC BATCH-11/DOS-11">DEC BATCH-11/DOS-11</a></li> <li><a href="/wiki/DIP_DOS" class="mw-redirect" title="DIP DOS">DIP DOS</a></li> <li><a href="/wiki/DOS/360" class="mw-redirect" title="DOS/360">DOS/360</a></li> <li><a href="/wiki/DOS_XL" title="DOS XL">DOS XL</a></li> <li><a href="/wiki/Edos" title="Edos">Edos</a></li> <li><a href="/wiki/EOS_(8-bit_operating_system)" title="EOS (8-bit operating system)">EOS</a></li> <li><a href="/wiki/FLEX_(operating_system)" title="FLEX (operating system)">FLEX</a></li> <li><a href="/wiki/GEMDOS" class="mw-redirect" title="GEMDOS">GEMDOS</a></li> <li><a href="/wiki/IDEDOS" title="IDEDOS">IDEDOS</a></li> <li><a href="/wiki/IMDOS" title="IMDOS">IMDOS</a></li> <li><a href="/wiki/IS-DOS" title="IS-DOS">iS-DOS</a></li> <li><a href="/wiki/ISIS_(operating_system)" title="ISIS (operating system)">ISIS</a></li> <li><a href="/wiki/Myarc_Disk_Operating_System" title="Myarc Disk Operating System">MDOS</a></li> <li><a href="/w/index.php?title=RCA_MicroDOS&action=edit&redlink=1" class="new" title="RCA MicroDOS (page does not exist)">MicroDOS</a></li> <li><a href="/wiki/MP/M" title="MP/M">MP/M</a></li> <li><a href="/wiki/MSX-DOS" title="MSX-DOS">MSX-DOS</a></li> <li><a href="/wiki/MyDOS" class="mw-redirect" title="MyDOS">MyDOS</a></li> <li><a href="/wiki/NewDos/80" title="NewDos/80">NewDos/80</a></li> <li><a href="/wiki/OS/M" class="mw-redirect" title="OS/M">OS/M</a></li> <li><a href="/wiki/PTDOS" title="PTDOS">PTDOS</a></li> <li><a href="/wiki/RealDOS" class="mw-redirect" title="RealDOS">RealDOS</a></li> <li><a href="/wiki/SB-80" class="mw-redirect" title="SB-80">SB-80</a></li> <li><a href="/wiki/Single_User_Control_Program" class="mw-redirect" title="Single User Control Program">SCP</a></li> <li><a href="/wiki/Sinclair_QDOS" title="Sinclair QDOS">Sinclair QDOS</a></li> <li><a href="/wiki/Data_General_RDOS" title="Data General RDOS">RDOS</a></li> <li><a href="/wiki/SmartDOS" class="mw-redirect" title="SmartDOS">SmartDOS</a></li> <li><a href="/wiki/SpartaDOS" class="mw-redirect" title="SpartaDOS">SpartaDOS</a></li> <li><a href="/wiki/SpartaDOS_X" title="SpartaDOS X">SpartaDOS X</a></li> <li><a href="/wiki/Technical_Support_SuperDOS" class="mw-redirect" title="Technical Support SuperDOS">Technical Support SuperDOS</a></li> <li><a href="/wiki/Top-DOS" class="mw-redirect" title="Top-DOS">Top-DOS</a></li> <li><a href="/wiki/TR-DOS" title="TR-DOS">TR-DOS</a></li> <li><a href="/wiki/TRSDOS" title="TRSDOS">TRSDOS</a></li> <li><a href="/wiki/TurboDOS" title="TurboDOS">TurboDOS</a></li> <li><a href="/wiki/UDOS" class="mw-redirect" title="UDOS">UDOS</a></li> <li><a href="/wiki/Z-DOS" title="Z-DOS">Z-DOS</a></li> <li><a href="/wiki/Z80-RIO" title="Z80-RIO">Z80-RIO</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Disk_operating_systems" title="Category:Disk operating systems">Category</a></li> <li><span class="noviewer" typeof="mw:File"><span title="List-Class article"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/16px-Symbol_list_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/23px-Symbol_list_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/31px-Symbol_list_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/List_of_disk_operating_systems_called_DOS" title="List of disk operating systems called DOS">List</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=FlexOS&oldid=1243496156">https://en.wikipedia.org/w/index.php?title=FlexOS&oldid=1243496156</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:CP/M_variants" title="Category:CP/M variants">CP/M variants</a></li><li><a href="/wiki/Category:Disk_operating_systems" title="Category:Disk operating systems">Disk operating systems</a></li><li><a href="/wiki/Category:DOS_variants" title="Category:DOS variants">DOS variants</a></li><li><a href="/wiki/Category:Digital_Research_operating_systems" title="Category:Digital Research operating systems">Digital Research operating systems</a></li><li><a href="/wiki/Category:Novell_operating_systems" title="Category:Novell operating systems">Novell operating systems</a></li><li><a href="/wiki/Category:Microcomputer_software" title="Category:Microcomputer software">Microcomputer software</a></li><li><a href="/wiki/Category:Real-time_operating_systems" title="Category:Real-time operating systems">Real-time operating systems</a></li><li><a href="/wiki/Category:Embedded_operating_systems" title="Category:Embedded operating systems">Embedded operating systems</a></li><li><a href="/wiki/Category:Discontinued_operating_systems" title="Category:Discontinued operating systems">Discontinued operating systems</a></li><li><a href="/wiki/Category:C_(programming_language)_software" title="Category:C (programming language) software">C (programming language) software</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:All_articles_with_dead_external_links" title="Category:All articles with dead external links">All articles with dead external links</a></li><li><a href="/wiki/Category:Articles_with_dead_external_links_from_April_2024" title="Category:Articles with dead external links from April 2024">Articles with dead external links from April 2024</a></li><li><a href="/wiki/Category:Articles_with_permanently_dead_external_links" title="Category:Articles with permanently dead external links">Articles with permanently dead external links</a></li><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_matches_Wikidata" title="Category:Short description matches Wikidata">Short description matches Wikidata</a></li><li><a href="/wiki/Category:Use_dmy_dates_from_April_2019" title="Category:Use dmy dates from April 2019">Use dmy dates from April 2019</a></li><li><a href="/wiki/Category:Use_list-defined_references_from_December_2021" title="Category:Use list-defined references from December 2021">Use list-defined references from December 2021</a></li><li><a href="/wiki/Category:Short_description_is_different_from_Wikidata" title="Category:Short description is different from Wikidata">Short description is different from Wikidata</a></li><li><a href="/wiki/Category:CS1_German-language_sources_(de)" title="Category:CS1 German-language sources (de)">CS1 German-language sources (de)</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 1 September 2024, at 20:18<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. By using this site, you agree to the <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use" class="extiw" title="foundation:Special:MyLanguage/Policy:Terms of Use">Terms of Use</a> and <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy" class="extiw" title="foundation:Special:MyLanguage/Policy:Privacy policy">Privacy Policy</a>. Wikipedia® is a registered trademark of the <a rel="nofollow" class="external text" href="https://wikimediafoundation.org/">Wikimedia Foundation, Inc.</a>, a non-profit organization.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Privacy policy</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:About">About Wikipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:General_disclaimer">Disclaimers</a></li> <li id="footer-places-contact"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us">Contact Wikipedia</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Code of Conduct</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Developers</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/en.wikipedia.org">Statistics</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Cookie statement</a></li> <li id="footer-places-mobileview"><a href="//en.m.wikipedia.org/w/index.php?title=FlexOS&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Mobile view</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-f69cdc8f6-6s8bw","wgBackendResponseTime":162,"wgPageParseReport":{"limitreport":{"cputime":"0.673","walltime":"0.801","ppvisitednodes":{"value":5240,"limit":1000000},"postexpandincludesize":{"value":172409,"limit":2097152},"templateargumentsize":{"value":5435,"limit":2097152},"expansiondepth":{"value":21,"limit":100},"expensivefunctioncount":{"value":8,"limit":500},"unstrip-depth":{"value":1,"limit":20},"unstrip-size":{"value":180652,"limit":5000000},"entityaccesscount":{"value":1,"limit":400},"timingprofile":["100.00% 666.258 1 -total"," 46.76% 311.558 1 Template:Reflist"," 15.89% 105.839 11 Template:Cite_journal"," 14.09% 93.907 8 Template:Navbox"," 11.28% 75.157 1 Template:Digital_Research"," 10.96% 73.003 1 Template:Infobox_OS"," 9.97% 66.451 12 Template:Cite_web"," 9.09% 60.583 1 Template:Infobox"," 8.41% 56.002 2 Template:Short_description"," 5.23% 34.850 8 Template:Cite_book"]},"scribunto":{"limitreport-timeusage":{"value":"0.359","limit":"10.000"},"limitreport-memusage":{"value":7241348,"limit":52428800}},"cachereport":{"origin":"mw-web.codfw.main-f69cdc8f6-7jdc6","timestamp":"20241122153031","ttl":721771,"transientcontent":true}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"FlexOS","url":"https:\/\/en.wikipedia.org\/wiki\/FlexOS","sameAs":"http:\/\/www.wikidata.org\/entity\/Q2560413","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q2560413","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2008-07-09T15:36:27Z","dateModified":"2024-09-01T20:18:54Z","headline":"discontinued modular real-time multiuser multitasking operating system"}</script> </body> </html>