Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd, Hitachi Ltd, Nippon Telegraph and Telephone Corp, Nippon Electric Co LtdfiledCriticalFujitsu Ltd
Priority to JP7098579ApriorityCriticalpatent/JPS55163698A/ja
Publication of JPS55163698ApublicationCriticalpatent/JPS55163698A/ja
Publication of JPS6221141B2publicationCriticalpatent/JPS6221141B2/ja
Virtual storage computer system having methods and apparatus for providing token-controlled access to protected pages of memory via a token-accessible view
Command controlled multi-storage space protection key pretesting system permitting access regardless of test result if selected key is predetermined value