Robert J. Dugan
Abstract
The 370-XA channel-subsystem architecture represents an evolutionary and significant extension of the System/370 channel architecture. This paper examines the programming-machine interface of the 370-XA channel subsystem and how it was designed to meet the requirements called for by the evolution of IBM's large-scale systems. In particular, emphasis has been placed upon meeting the needs of multiprocessing, maintaining availability, and supporting large I/O configurations while at the same time preserving compatibility for running System/370 channel programs.
- 1 R. P. Case and A. Padegs, "Architecture of the IBM System/370," Commun. ACM 21, 75-77 (January 1978). Google Scholar
Digital Library
- 2 IBM System/370 Principles of Operation, Order No. GA22-7000, available through IBM Branch Offices.Google Scholar
- 3 A Guide to IBM 3033 Processor Complex, Attached Processor Complex, and Multiprocessor Complex of System/370, Order No. GC20-1859, IBM Corporation; available through IBM Branch Offices.Google Scholar
- 4 IBM 370-XA Principles of Operation, Order No. GA22-7085, available through IBM Branch Offices.Google Scholar
- 5 Sperry Univac 1100/90 Systems, Hardware System Description.Google Scholar
Index Terms
- System/370 extended architecture: A program view of the channel subsystem
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