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IBM System/7 Functional Characteristics - All about the IBM 1130 ...

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<strong>IBM</strong> 5022 Disk Storage ModuleCHAPTER CONTENTS<strong>Functional</strong> Description 15-2Operator Controls 15-3Data Security 15-3File Organization 15-4Track Format 15-4Sector Identifier Format 15-6Operating and Programming Restrictions 15-6DPC File Operations 15-7Read Data 15-7Write Data 15-7Cycle Steal File Operations 15-8DPC/Cycle Steal File Operations 15-9Seek 15-9Seek Time 15-9Initial Program Load (IPL) 15-9I/O Commands 15-10Device Control Block 15-19Error and Status Conditions 15-20Flagging 15-26Track Initialization 15-27Track Initialization Procedures 15-28Suggested Recovery Procedures 15-29Recovery from DSW Errors 15-29Recovery from ISW Error or Exception 15-29Recovery from ISWEX Errors 15-30<strong>IBM</strong> <strong>System</strong>/7 <strong>Functional</strong> <strong>Characteristics</strong>©<strong>IBM</strong> Corp. 1970, 1971, 1972, 1974, 1975 <strong>IBM</strong> 5022 Disk Storage Module 15-1

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