On page 8 and 9 of Appendix C, "Use of Virtual Machines in Information Systems", by John J. Donovan, May 1975, Report No,. MIT-EL-75-0100 in Information Systems to Provide Leading Indicators of Energy Sufficiency: A Report to the Federal Energy Administration, MIT-Energy Laboratory Working Paper #MIT-EL-75-004WP, June 13, 1975: In addition to VM/370 and its predecessors, several other operational virtual machine systems have been developed, such as the DOS/VM of PRIME Computer, Inc. PRIME: 1974], the virtual machine capability provided under the Michigan Terminal System (MTS) [Morrison: 1973], and a virtual machine system for a modified PDP-11/45 used by UCLA for data security studies [Popek & Kline: 1974]. The VMM concept, once unclerstood, is quite simple and logical. Unfortuntely, it is sufficiently different from most conventional operating systems that many people have difficulty in understanding the concept. The papers [Buzen: 1973, Goldberg: 1973, Hogg: 1973, Madnick: 1969, Parmellee: 1972, and Madnick & Donovan: 1974] give additional insight. 18. Hogg, J., and P. Madderom, "The Virtual Machine Facility — How to Fake a 360," Internal Note , University of British Columbia and University of Michigan Computer Center, (1973). 27. Morrison, J. E., "User Program Performance in Virtual Storage Systems, IBM Systems Journal, vol. 12, no. 3, pp. 216-237,1973. |
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