IBM Journal of Research and Development
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IBM Journal of Research and Development  
Volume 25, Number 5, Page 377 (1981)
25th Anniversary Issue
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System/360 and Beyond

by A. Padegs
The evolution of modern large-scale computer architecture within IBM is described, starting with the announcement of System/360 in 1964 and covering the latest extensions to System/370. Emphasis is placed on key attributes and on the motivation for providing them, and an assessment is made of the experience gained in the implementation and use of the architecture. The main approaches are discussed for obtaining implementations at widely differing performance levels, and a number of significant implementation parameters for all processors are listed.
Related Subjects: Arithmetic and logical unit design; Computer organization and design