IBM GA22-7000-10 370 Principles of Operation Sep87 free download

File name GA22-7000-10_370_Principles_of_Operation_Sep87.pdf

------ ---- - --- - -- - -- --- - ----,- IBM System/370 Principles of Operation Publication Number File Number GA22-7000-10 S370-01 Eleventh Edition (September 1987) This major revision obsoletes and replaces GA22-7000-8, GA22- 7000-9, and Technical Newsletters GN22-0644 and GN22-0683. Significant changes or additions to the text and illustrations are indicated by a vertical line to the left of the change. Changes are made occasionally to the information herein; before using this publication in connection with the operation of IBM equipment, refer to the latest IBM System/370, 30xx, and 4300 Processors Bibliography, GC20-000I7 for the editions that are applicable and current. IBM may have patents or pending patent applications covering subject matter described herein. Furnishing this publication does not constitute or imply a grant of any license under any patents, patent applications, trademarks, copyrights, or other rights of IBM or of any third party, or any right to refer to IBM in any advertising or other promotional or marketing activities. IBM assumes no responsibility for any infringement of patents or other rights that may result from the use of this publication or from the manufacture, use, lease, or sale of apparatus described herein. licenses under IBM's utility patents are available on reasonable and nondiscriminatory terms and conditions. Inquiries relative to licensing should be directed, in writing, to: IBM Corpora- tion, Director of Contracts and licensing, Armonk, NY, USA 10504. References in this publication to IBM products, programs, or services do not imply that IBM intends to make these available in all countries in which IBM operates. Publications are not stocked at the address given below. Requests for IBM publications should be made to your IBM repre- sentative or to the IBM branch office serving your locality. A form for reader's comments is provided at the back of this publication. If the form has been removed, comments may be addressed to: IBM Corporation, Central Systems Architecture, Department E57, PO Box 390, Poughkeepsie, NY, USA 12602. IBM may use or distribute whatever information you supply in any way it believes appropriate without incurring any obligation to you. ec) Copyright International Business Machines Corporation 1970, 1972, 1973, 1974, 1980, 1981, 1987 ; PREFACE This pUblication provides, for reference and phrases appear, of necessity, earli- purposes, a detailed definition of the er in the publication than the principal machine functions performed by discussions explaining them. The reader System/370. who encounters a problem because of this arrangement should refer to the index, The publication applies only to systems whi