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GA24-3557-3
IBM System/370 Model 145
Systems Functional Characteristics
Preface
This reference publication is intended for system analysts System/370 Extended Control--A description of the fol-
and programmers who require information about system lowing System/370 features: the Extended Control
features, CPU and input/output characteristics, timings, feature, including a description of the extended control
machine instructions, and the functions of integrated and PSW, Store Status, Program Event Recording, Dynamic
attachable I/O devices. Address Translation, Channel Indirect Data Address,
and Clock Comparator and CPU Timer.
The reader is assumed to have a working knowledge of
the IBM System/370 Principles of Operation, GA22-7000,
and to have had programming experience with other Integrated File Adapter - Description and characteristics of
System/360 or System/370 models. the disk-storage facility that are recommended for primary
System operating information is contained in the program and data residence.
Operator's Library: IBM System/370 Model 145 Operating Input/Output Channel Characteristics - Information about
Procedures, GC38-001 5. the byte-multiplexer, selector, and block-multiplexer
This manual is divided into sections to assist you in channels.
locating a particular topic.
Introduction-General overview of System/370 Model 145, 1401/1460, 1440 Emulation Feature and 1401/1460, 1440,
including discussions of CPU components, and a brief and 1410/7010 Emulation Feature - Descriptions of these
description of integrated attachments and I/O channels. features, including the relationship to the required
Console File-Functions of this microprogram-loading Emulator Programs.
device.
Console Printer-Keyboard--Programming and configuration
information for the printer-keyboard units. Timings - Detailed timings for internal CPU functions
(instruction execution), the printer-keyboard, the byte-
Features Descriptions - A description of major system multiplexer channel, the selector channels, the block-
features such as OS/DOS Compatibility, the Interval multiplexer channels, and the integrated file adapter.
Timer, the Time-of-Day Clock, and the Integrated CPU Configurator and System Features - A list of standard
Storage Control. and available features, feature dependencies, etc.
Fourth Edition (August 1972)
This is a major revision of, and obsoletes, GA24-3557-2 and Technical Newsletter
GN24-0482. Minor technical changes have been made throughout this publication.
Changes are continually made to the information herein; any changes will be reported
in subsequent revisions or Technical Newsletters.
Requests for copies of IBM publications should be made to your IBM representative
or the IBM branch office serving your locality.
This manual has been prepared by the IBM Systems Development Division, Product
Publications, Dept. KIO, P.O. Box 6, Endicott, N.Y. 13760. A form for
readers' comments is provided at the back of this publication. If the form
has been removed, comments may be sent to the above address. Comments
become the property of IBM.