IBM A22-6889-0 360-75 funcChar free download

File name A22-6889-0_360-75_funcChar.pdf

File Number S360-01 Form A22-6889-0 Systems Reference Library IBM System/360 MDdel 75 Functional Characteristics This manual presents the organization, characteristics, functions and features unique to the IBM System/360 Model 75. Major areas described are: system structure, generalized information flow, standard and optional features, instruction timings, and the system control panel. Descriptions of specific input/output devices used with the IBM System/360 Model 75 appear in separate publications. (See IB"A1 System/360 Bibliography, Form A22-6822.) This manual assumes that the reader has a knowledge of Sys- tem/360 as defined in the IB"AI System/360 Principles of Opera- tion, Form A22-6821 and the IB"A1 System/360 System Summary, Form A22-6810. 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. B98, PO Box 390, Poughkeepsie, N. Y. 12602 Contents System Description 5 System Control Panel. 13 2365 Processor Storage 5 System Reset 13 Two-Way Interleaving . 5 Store and Display . 13 Four-Way Interleaving 8 Initial Program Loading 13 2361 Core Storage 8 System Control Panel Controls 15 2075 Processing Unit .. 8 Operator Controls ... . 15 Storage Control Unit 10 Operator Intervention Controls 18 Instruction Unit 10 General Registers 10 Execution Unit 10 Checking 10 Instruction Times 21 Channels 10 Timing Considerations 21 2860 Selector Channel . 10 Timing Assumptions 21 Channel-to-Channel Feature 11 Average Times 21 2870 Multiplexor Channel ... 11 Legend for System/360 Timing (Average Times) 26 2870 Priority ...