{"id":456,"date":"2010-08-08T23:19:45","date_gmt":"2010-08-08T21:19:45","guid":{"rendered":"http:\/\/einblicke.andreashofmann.eu\/?p=456"},"modified":"2023-01-13T18:01:15","modified_gmt":"2023-01-13T17:01:15","slug":"lexikon-zur-computergeschichte-upper-memory-blocks-umb","status":"publish","type":"post","link":"https:\/\/eindruecke.achmnt.eu\/2010\/08\/456\/","title":{"rendered":"Lexikon zur Computergeschichte: Upper Memory Blocks &#8211; UMB"},"content":{"rendered":"<p>Upper Memory Blocks (UMB) bezeichneten bei MS-DOS weiteren Disc-Operating-Systems den Speicherbereich zwischen dem konventionellen Speicher 640 KB bis zur Grenze von 1 MB. Urspr\u00fcnglich war dieser Bereich reserviert, um den Arbeitsspeicher von Zusatzhardware (SCSI-Karten, Grafikkarte) adressieren zu k\u00f6nnen. Da in den seltensten F\u00e4llen allerdings der komplette Bereich verwendet wurde, nutzten das BIOS und die Betriebssysteme diesen Bereich, um &#8222;reelen&#8220; Speicher in diese L\u00fccke hineinzuverlegen. Dies hatte den Vorteil, dass Programme und Treiber in die UMBs &#8222;hochgeladen&#8220; werden konnten, was den Hauptspeicherbereich (bis 640 KB) entlastete.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Upper Memory Blocks (UMB) bezeichneten bei MS-DOS weiteren Disc-Operating-Systems den Speicherbereich zwischen dem konventionellen Speicher 640 KB bis zur Grenze von 1 MB. Urspr\u00fcnglich war dieser Bereich reserviert, um den Arbeitsspeicher von Zusatzhardware (SCSI-Karten, Grafikkarte) adressieren zu k\u00f6nnen. Da in <a href=\"https:\/\/eindruecke.achmnt.eu\/2010\/08\/456\/\"> Read more&#8230;<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[6506,12],"tags":[3235,3371],"class_list":["post-456","post","type-post","status-publish","format-standard","hentry","category-informationsmanagement","category-compulex","tag-technikgeschichte","tag-umb"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/eindruecke.achmnt.eu\/wp-json\/wp\/v2\/posts\/456"}],"collection":[{"href":"https:\/\/eindruecke.achmnt.eu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eindruecke.achmnt.eu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eindruecke.achmnt.eu\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/eindruecke.achmnt.eu\/wp-json\/wp\/v2\/comments?post=456"}],"version-history":[{"count":1,"href":"https:\/\/eindruecke.achmnt.eu\/wp-json\/wp\/v2\/posts\/456\/revisions"}],"predecessor-version":[{"id":13640,"href":"https:\/\/eindruecke.achmnt.eu\/wp-json\/wp\/v2\/posts\/456\/revisions\/13640"}],"wp:attachment":[{"href":"https:\/\/eindruecke.achmnt.eu\/wp-json\/wp\/v2\/media?parent=456"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eindruecke.achmnt.eu\/wp-json\/wp\/v2\/categories?post=456"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eindruecke.achmnt.eu\/wp-json\/wp\/v2\/tags?post=456"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}