IBM Z33-1021-0 2020 Processing Unit FETOM May68 free download

File name Z33-1021-0_2020_Processing_Unit_FETOM_May68.pdf

ll) g5~ Field Engineering Theory of Operation IBM Confidential ~ @~ @ Processing Unit System/360 Model 20 (Machines with serial no. 50,000 and above) Z33-1021-0 Preface This manual describes the IBM 2020 Central Processing Unit for the IBM System/360 Model 20 (Machines with serial no. 50,000 and above). It also defines the relationship of the 2020 Processing Unit to the System/360 Model 20 and to the input/output devices to which it may be connected. Field Engineering Maintenance Diagrams manual, 2020 Processing Unit, System/360 Model 20 (Machines with serial no. 50,000 and above), Form Z33-1024-O is complementary to this manual and is referenced in the text as "FEMDM". First Edition This manual contains preliminary information and is subject to change without further notice. A form is provided at the back of this publication for reader's comments. If the form has been removed, comments may be addressed to IBM Corporation, 112 East Post Road, White Plains, N.Y. 10601, for the attention of Publishing Operations. ii Contents Chapter 1. Introduction 1- 1 Local Store (LS) 1-35 IBM System/360 Model 20 1- 1 Modify Address