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IBM 4341 Processor Model Group 1 Functional Characteristics and Processor Complex Configurator GA24-3672-4

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IBM 4341 Processor Model Group 1 Functional Characteristics and Processor Complex Configurator GA24-3672-4 GA24-3672-4 File No. 4300-01 I BM 4341 Processor Model Group 1 Functional Characteristics and Processor Complex Systems Configurator .; t ' --- - ----- -----__,. ---~--- ---_- __,..- - -----.. - Federal Communications Commission (}~CC) Statement Warning: This equipment generates, uses, and can radiate radio-frequency energy and if not installed and used in accordance with the instructions manual, may cause inter(erence to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide a reasonable protection against such interfere nee when operated in a commercial environment. Operation of this equipment in a residential area is likely to cause interference. In which case, the user at his own expense is required to take whatever measures may be necessary to correct the interference. ' The FCC statement above refers to machines manufactured or reconditioned after January 1, 1981. Fifth Edition, November 1981 This is a revision of GA24-3672-4. Significant changes are indicated by a line to the left of the change. Information contained in this manual is subject to change from time to time. Any such change will be reported in subsequent revisions or through the System Library Subscription Service. It is possible that this material may contain reference to, or information about, IBM products (machines and programs), programming, or services that are not announced ; in your country. Such references or information must not be construed to mean that IBM intends to announce such products, programming, or services in your country. Requests for copies of IBM publications should be made to your IBM representative or to the IBM branch office serving your locality. A form for reader's comments is provided at the back of the publication. If the form has been removed, comments may be addressed to the IBM General Technology Division, Dept. KlO, P.O. Box 6, Endicott, NY 13760. IBM may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation whatever. You may, of course, continue to use the information you supply. © Copyright International Business Machines Corporation 1978, 1979, 1981 Preface This reference publication is for system analysts and Associated Publications programmers who require information about processor • IBM 4341 Processsor Model Group 1 Channel features, input/output characteristics, timings, Characteristics, GA24-3671 machine instructions, and the functions of integrated I/0 devices. • IBM 4341 Processors Operator's Guide, GA24-3669 The reader is assumed to have a working knowledge • IBM 4300 Processors Installation of the IBM 4300 Processors Principles of Operation Manual-Physical Planning, GA24-3667 for ECPS:VSE Mode, Order No. GA22-7070, and ' the IBM System/370 Principles of Operation, • IBM Input/Output Equipment Installation GA22-7000, and to have had programming Manual-Physical Planning for System/ 3 60, experience with System/360, System/370, or other System/ 3 70, and 43 00 Processors, GA22-7064 4300 Processors. • IBM 3268 Printer Model 2 Planning and 'Site Preparation Guide, GA27-3266 The main chapters cover: I • IBM 32 70 Information Display System • Introduction to the IBM 4341 Processor Model Component Description, GA27-2749 Group 1 • Input/Output Channel Characteristics • Introduction to Programming the IBM 3 270, • Support Subsystem GC27-6999 • Display Console • IBM Disk Pack and Cartridge Handling • Facilities Descriptions Procedures, GA26-5756 • Instruction Timings • IBM 4341 Processor Model Group 1 Complex • IBM Diskette-General Information Manual, Configurator GA21-9182 • IBM 32 70 Information. Display System Color Prerequisite Publications and Programmed Symbols, GA33-3056. • IBM 4300 Processors Principles of Operation for ECPS:VSE Mode, GA22-7070 • IBM System/ 3 70 Principles of Operation, GA22-7000 • IBM 4300 Processors Summary and Input/Output & Data Communications Configurator, GA33-1523. Preface iii Figures 1. IBM 4341 Processor with Typical 1/0 Configuration vi 2. Simplified 4341 Data Flow 11 3. Storage Concept 12 4. Channel Configuration and Data Rates 16 5. Display Console Status Indicator Layout (Line 25) 19 6. ED and EDMK Character Timings 45 • iv IBM 4341 Processor Model Group 1 Functional Characteristics Contents Introduction 1 Display Console 19 Highlights Display Consoles 19 Channel Configurations 2 Printers 19 Modes of Operation 3 Operator Control Panel 19 Programming Support 3 3278-2A or 3279-2C Display Console 19 Remote Support Facility (RSF) 3 3278-2A Switches and Controls 21 ( Remote Operator Console Facility 4 3279-2C Switches and Controls 21 Processor Features and Characteristics 4 Display Console Keyboard 21 Standard Features 4 Testing Considerations 22 Prerequisites 4 Display Mode 22 Optional Features 5 3270-Mode CCW Commands 22 Minimum Configuration for Hardware System Device Status 22 ' Maintenance 5 Sense Byte 23 System Residence and Maintenance Storage Requirements 6 Write Data Stream 23 Compatibility with System/360, System/370, and Read Data Stream 24 other 4300 Processors 6 Programming Information 24 Data Representation 6 Display Mode Error Handling 24 Processor Storage Characteristics 7 3268 Printer Model 2 24 Storage Access Width, Data Transfer Rate, and 3287 Printer 24 Internal Cycle Time 7 Error Handling 25 Permanently Assigned Areas 7 Printer/Keyboard Emulation Mode 25 Control Storage 7 Screen Management 25 High-Speed Buffer Storage 7 3278-2A and 3279-2C Console Keyboard Operation 26 Local Storage .7 3268-2 and 3287 Printers 27 Channel Buffer Storage 7 Printer/Keyboard Commands 27 Arithmetic and Logic Unit (ALU) 7 Device Status 28 Support Processor 7 Error Conditions 29 Display Console 7 Restrictions and Functional Differences 29 Operating the System 7 Operator Controls 7 Model-Dependent Information 31 Basic Functions 9 Alter/Display (System) 9 Mode 10 Facility Descriptions 3 3 Checking the System 10 Instruction Set 3 3 Byte-Oriented Operands 3 3 System Structure 11 Time-of-Day Clock 33 Data Flow 11 Time-of-Day Clock Instructions 33 Processor 11 Clock Comparator and CPU Timer 34 Storage Concept 12 CPUTimer 34 Error Handling 12 Interval Timer 34 System Retry Overview 12 Interval Timer Switch 34 Internal Logout 13 CPU Identification 3 5 Machine Check Interruption Bits 13 Channel Identification 35 Check Stops 13 Channel-to-Channel Adapter 3 5 System Control 3 5 System Operation 14 PSW Format 35 Support Processor 14 Program-Event Recording 35 System Diskette Drive 14 Store Status and Machine Save 36 Diskette Wear 14 Initial Microcode Loading (IML) 14 Instruction Timing Information 37 Input/Output Channel Characteristics 15 Processor Instruction Timings 37 Standard Input/Output Interface 15 4341 Model Group 1 Instruction Timing List 37 Channel Data Rates 16 Legend for Timing Formulas 45 Input/Output Interruptions 17 High-Speed Buffer Storage and TLB Miss Service Times 45 Byte-Multiplexer Channel(s) 17 Effect of Hardware-Assist Features on Performance 46 Block-Multiplexer Channels 17 Subchannels and UCWs 17 4341 Model Group 1 Processor Complex Configurator 47 UCWPool 17 Channel UCW Directory 18 UCW Assignment 18 Index 48 Device Considerations 18 Channel Operation 18 Contents v • Figure 1. IBM 4341 Processor with Typical 1/0 Configuration • vi IBM 4341 Processor Model Group 1 Functional Characteristics IBM 4341 Process Model Group 1 Functional Characteristics This publication is a reference for users of the 4341 detection in processor storage. Error recording Model Group 1; only items that are unique to the by the hardware itself and the Remote Support 4341 Processor are discussed in detail. Effective use Facility (RSF) for remote maintenance are also of this manual requires a comprehensive under­ provided. standing of the information in the IBM 4300 • Six channels available: Processors Principles of Operation for ECPS:VSE Mode, GA22-7070, as well as the IBM System/ 3 70 - Group 1 (standard): One byte-multiplexer Principles of Operation, GA22-7000. channel and two block-multiplexer channels. - Group 2 (optional): Three additional ' The 4341 Processor (Figure 1) is a high-availability block-multiplexer channels. (Channel 4 can data processing system that provides the reliability, be selected as a second byte-multiplexer performance, and convenience demanded by both channel.) business and scientific users. The 4341 Model Group 1 is compatible with other 4300 Processors The channels are capable of overlapped program and is capable of running under current operation from the Instruction Execution operating systems. function of the 4341. Note: Hereinafter, references to 4341 are to The block-multiplexer channels "appear" as 4341 Model Group 1. selector channels to I/0 devices that do not block multiplex. Highlights An optional Channel-to-Channel Adapter is The 4341 offers Virtual Storage, System Control also available. Program (SCP) support, and System/370 compati­ bility, implemented by using Large Scale Integrated technology and large processor storage. • Two modes of operation selectable at Initial Microcode Load (IML) time: The 4341 Complex consists of the 4341 and the IBM 3 2 7 8Model 2A Display Console or the IBM Extended Control Program Support VSE 3279-2C Color Display Console. The processor (ECPS: VSE) Mode - allows operation of an provides arithmetic, logic and control functions, appropriately generated DOS/VSE for storage, channels, and system diskette drive. enhanced performance.
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