IBM A22-6821-0 360PrincOps free download

File name A22-6821-0_360PrincOps.pdf

Form A22-6821-0 File No. S360-01 Systems Reference Library IBM System/360 Principles of Operation This manual is a comprehensive presentation of the characteristics, functions, and features of the IBM Sys- tem/360. The material is prescnted in a direct manner, assuming that the reader has a basic knowledge of IBM data processing systems and has read the IBM System/360 Systems Summary, Form A22-6810. The manual is useful for individual study, as an instruction aid, and as a machine reference manual. The manual defines System/360 operating princi- ples, central processing unit, instructions, system con- trol panel, branching, status switching, interruption system, and input/output operations. Descriptions of specific input/output devices used with System/360 appear in separate publications. Also, details unique to each model of the System/360 appear in separate publications. Copies of this and other IBM publications can be obtained through IBM Branch Offices. Address comments concerning the contents of this publication to: IBM Corporation, Customer Manuals, Dept. 898, PO Box 390, Poughkeepsie, N. Y. 12602 Contents IBM System/360 ... .. 5 Decimal Arithmetic ... 34 General-Purpose Design ... .. 5 Data Format . ' ... '... ... ... ... 34 Compatibility ... . 5 Number Representation ... 34 System Program ... . 5 Condition Code ... ,... ,... 35 System Alerts ... . 6 Instruction Format ... ... 35 Multisystem Operation ... . 6 Instructions ... ,... '... 35 Input/Output ... . 6 Add Decimal ...