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This paper describes the move together with the changes made and includes some preliminary performance figures from the new system. This implementation project has produced a major time\u2010sharing virtual memory operating system with a fraction of the effort required to implement the original system.<\/jats:p>","DOI":"10.1002\/spe.4380101206","type":"journal-article","created":{"date-parts":[[2006,11,17]],"date-time":"2006-11-17T23:50:07Z","timestamp":1163807407000},"page":"993-1008","source":"Crossref","is-referenced-by-count":6,"title":["The evolution of the operating system EMAS 2900"],"prefix":"10.1002","volume":"10","author":[{"given":"P. D.","family":"Stephens","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J. K.","family":"Yarwood","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D. J.","family":"Rees","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N. H.","family":"Shelness","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2006,10,27]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1002\/spe.4380080409"},{"key":"e_1_2_1_3_2","unstructured":"J. C.AdamsandG. E.Millard \u2018Performance measurement on the Edinburgh Multi\u2010Access System\u2019 Proceedings of the International Computing Symposium Antibes 105\u2013112(1975)."},{"key":"e_1_2_1_4_2","unstructured":"J. C.Adams \u2018Performance measurement and evaluation of time shared virtual memory systems\u2019 Ph.D. Thesis Edinburgh University 1977."},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-349-03374-4"},{"key":"e_1_2_1_6_2","unstructured":"P. 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