IBM SY22-2844-0 Model 40 Theory Of Operation Interrupts Channels Nov67 free download

File name SY22-2844-0_Model_40_Theory_Of_Operation_Interrupts_Channels_Nov67.pdf

Field Engineering Theory of Operation System/360 Model 40 Theory of Operation Program Interrupt Multiplex Channel Selector Channel SY22-2844-O Preface This manual describes the theory of operation of the Field Engineering Manual of Instruction, IBM Sys- multiplex and selector channels of the IBM 2040. It also tem/360 Model 40, Functional Units, Form 223- presents the causes and effects of program interrupts 2843. and describes the operation of the interval timer. Field Engineering Manual of Instruction, IBM Sys- Other manuals associated with and referenced by tem/360 Model 40, Power Supplies, Features, and this publication are: Appendix, Form 223-2845. Field Engineering Manual of Instruction, IBM Sys- All three-digit figure references in this publication tem/360 Model 40, Comprehensive Introduction, refer to figures in the Diagrams Manual. Form 223-2840. The words "memory" and "storage" may be used in- Field Engineering Maintenance Manual, IBM Sys- terchangeably between this publication and the ma- tem/360 Model 40, 2040 Processing Unit, Form chine ALD'S. 223-2841. It is recommended that the user of this publication Field Engineering Diagrams Manual, IBM System/ remove the staples and insert this publication in a 360 Model 40, 2040 Processing Unit, Form 223- binder with the other System/360 Model 40 instruction 2842. manuals. Major sections and items should be tabbed. FOURTH EDITION This is a reprint of 223-2844-0, incorporating changes released in the following FE Supplement: FORM NUMBER PAGES AFFECTED DATE S23-4050 30, 31, 41.1, 42, 44, 55, 69, 71, November 30, 1967 73, 75, 81-92, 95, 96, 97.1, 101-lO4 Significant changes or additions to the specifications contained in this publication are continually being made. When using this publication in connection with the operation of IBM equipment, check the latest FE Publications Systems Sequence Listing for revisions or contact the local IBM branch office. 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, FE Manuals, Dept. B96, PO Box 390, Poughkeepsie, N.Y. 12602