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IBM Journal of Research and Development

Issue 3 • Date May 1983

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Displaying Results 1 - 12 of 12
  • System/370 Extended Architecture: Design Considerations

    Publication Year: 1983, Page(s):198 - 205
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (671 KB)

    This paper reviews the overall objectives and the design considerations that led to the System/370 Extended Architecture (370-XA). It presents an overview of the differences between the System/370 and 370-XA architectures and summarizes all architectural extensions, deletions, and changes. Then it describes in more detail the extensions for interpretive execution, 31-bit addressing, protection, tr... View full abstract»

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  • System/370 Extended Architecture: The Channel Subsystem

    Publication Year: 1983, Page(s):206 - 218
    Cited by:  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1077 KB)

    The 370-XA channel subsystem architecture represents a significant extension of the corresponding System/370 architecture. This paper examines the need for these extensions, discusses the important features and facilities of the new architecture, and provides comparisons with its predecessor, the System/370 channel architecture. It also describes, from an operational viewpoint, how these new conce... View full abstract»

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  • A Fault-Tolerant System Architecture for Navy Applications

    Publication Year: 1983, Page(s):219 - 236
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1468 KB)

    This paper describes the architecture of a computer system, being designed and built for the U.S. Navy, that is expected to be the standard Navy shipboard computer for the next twenty years or so. It has a requirement for very high system reliability, which is addressed by a multiprocessor system configuration that can recover dynamically from hardware faults and support on-line repair of failed h... View full abstract»

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  • The 801 Minicomputer

    Publication Year: 1983, Page(s):237 - 246
    Cited by:  Papers (36)  |  Patents (23)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (856 KB)

    This paper provides an overview of an experimental system developed at the IBM Thomas J. Watson Research Center. It consists of a running hardware prototype, a control program, and an optimizing compiler. The basic concepts underlying the system are discussed, as are the performance characteristics of the prototype. In particular, three principles are examined: (1) system orientation towards the p... View full abstract»

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  • Integration of Machine Organization and Control Program Design—Review and Direction

    Publication Year: 1983, Page(s):247 - 256
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (904 KB)

    This paper discusses the relationship between machine organization and control program design in high-end commercial computer systems. The criterion is cost/performance, subject to achieving an acceptable performance level. A brief discussion of the environment expected for the design and operation of high-end commercial computer systems is outlined, followed by a discussion of machine organizatio... View full abstract»

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  • Documenting a Computer Architecture

    Publication Year: 1983, Page(s):257 - 264
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (755 KB)

    The documentation of a computer architecture requires that special conditions be satisfied in its preparation to ensure exactness, consistency, and completeness. One group in IBM, Central Systems Architecture, has spent many years refining procedures for producing quality documentation of this type, most notably for the System/370 architecture and the System/370 Extended Architecture (370-XA). Thi... View full abstract»

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  • Random-Pattern Coverage Enhancement and Diagnosis for LSSD Logic Self-Test

    Publication Year: 1983, Page(s):265 - 272
    Cited by:  Papers (95)  |  Patents (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (636 KB)

    Embedded linear feedback shift registers can be used for logic component self-test. The issue of test coverage is addressed by circuit modification, where necessary, of random-pattern-resistant fault nodes. Also given is a procedure that supports net-level diagnosis for structured logic in the presence of random test-pattern generation and signature analysis. View full abstract»

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  • Bounce and Chaotic Motion in Impact Print Hammers

    Publication Year: 1983, Page(s):273 - 280
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (695 KB)

    The basis of this paper is a lumped-parameter description of an impact printer actuator of the stored-energy type. All constants necessary to describe the actuator and the ribbon/paper pack are derived from measurements. The equations of motion are integrated both for single- and multiple-current pulse excitation. The numerical results show that for low repetition rates, each impact is distinct an... View full abstract»

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  • Digital Simulation of Magnetic Czochralski Flow Under Various Laboratory Conditions for Silicon Growth

    Publication Year: 1983, Page(s):281 - 284
    Cited by:  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (366 KB)

    Previous digital simulations have suggested that an axial magnetic field in the 0.1-T (1000-Gs) range can effectively suppress convection in Czochralski growth of silicon. The present paper treats the matter more quantitatively by investigating the convection in a variety of flow conditions corresponding to typical Czochralski growth of silicon on a laboratory scale. View full abstract»

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  • Large Multi-Layer Panel-Drilling System

    Publication Year: 1983, Page(s):285 - 291
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (663 KB)

    This paper describes the mechanical, electrical, and control features of an advanced four-station, twelve-spindle, large printed-circuit panel-drilling system. The system was designed as a production tool to produce over 35,000 0.4-mm-diameter holes in a panel containing twenty layers of copper and nineteen layers of epoxy glass. Built around a precision four-station x-y positioning system with th... View full abstract»

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  • Recent papers by IBM authors

    Publication Year: 1983, Page(s):292 - 296
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (397 KB)

    Reprints of the papers listed here may usually be obtained by writing directly to the authors. The authors' IBM divisions or groups are identified as follows: CHQ is Corporate Headquarters; CPD, Communication Products Division; DSD, Data Systems Division: FED, Field Engineering Division: FSD, Federal Systems Division: GPD, General Products Division; GSD, General Systems Division; GTD, General Tech... View full abstract»

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  • Recent IBM patents

    Publication Year: 1983, Page(s):297 - 299
    IEEE is not the copyright holder of this material | PDF file iconPDF (197 KB)
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The IBM Journal of Research and Development is a peer-reviewed technical journal, published bimonthly, which features the work of authors in the science, technology and engineering of information systems.

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Editor-in-Chief
Clifford A. Pickover
IBM T. J. Watson Research Center