Text preview for : GA22-6958-1_707x_Compatibility_Feature_for_IBM-370_165_168.pdf part of IBM GA22-6958-1 707x Compatibility Feature for IBM-370 165 168 IBM 370 compatibility_feature GA22-6958-1_707x_Compatibility_Feature_for_IBM-370_165_168.pdf
Back to : GA22-6958-1_707x_Compatib | Home GA22-6958-1 (File No. 5/370-13) I 7070/7074 Compatibility Feature for IBM System/370 Systems I Models 165, 165 II, and 168))PrefaceThe IBM 7070/7074 Compatibility Feature, operating with ORGANIZATION OF THIS PUBLICATIONa complementary set of programs, constitutes the 7074emulator. Basically, the emulator is a hardware-aided The information in this manual is organized as follows:simulator program. It operates much like an interpretive-routine simulator program, but at a speed about five times Following the Contents is a list of abbreviations andfaster. With the emulator, System/370 Models 165, 165 II, notation forms used in this publication.and 168 can run 7070 and 7074 programs at speeds that, in The Introduction contains a general description of emula-general, equal or exceed those of the original systems. tion and provides basic information on the compatibility feature and the emulator program. The section "Emulator Organization" describes the func- tions of the compatibility feature and of the emulatorPREREQUISITE PUBLICATIONS program and their relationship to each other. This sectionThe reader of this publication should be familiar with the also includes information on acceptable data formats andinformation contained in the following publications: program/feature communication. IBM 7070-7074 Principles of Operation, GA22-7003 The section "Emulator Instruction Set" describes the IBM System/370 Systenl Summar)', GA22-7001 format, application, and action of each instruction provided IBM System/370 Principles of Operation, GA22-7000 by the compatibility feature. 7074 OS Emulator on System/370 Reference, The Appendix contains information concerning conver-GC27-6948. sion of graphics and internal codes. ()Second Edition (June 1973)This major revision obsoletes GA22-6958-o and Technical Newsletter GN22-o428,and expands the scope of this manual to include System/370 Models 165 II and168. Any significant technical change (addition, deletion, or revision) is indicatedby a vertical bar to the left of the change.Changes are periodically made to the specifications herein; before using thispublication in connection with the operation of IBM systems, refer to the latestlBAf Syste1n/360 and System/370 Bibliography, GA22-6822 and associatedtechnical newsletters for the editions that are applicable and current. \Requests for copies of IBM publications should be made to your IBMrepresentative or to the IBM branch office serving your locality.This manual has been prepared by the IBM System Products Division, ProductPublications, Dept. B98, PO Box 390, Poughkeepsie, N.Y. 12602. A form forreaders' comments is provided at the back of this publication. If the form hasbeen removed, comments may be sent to the above address. Comments become ()the property of IBM.