IBM 22-6264-1 305 RAMAC Manual of Operation Apr57 free download

File name 22-6264-1_305_RAMAC_Manual_of_Operation_Apr57.pdf

Random Access Method of Accounting and Control / 305 RAMAC Random Access Method of Accounting and Control Manual of Operation M A J0 R REV I S ION (April 1957) This edition, Form 22-6264-1, obsoletes Form 22-6264-0 and all earlier editions. Major changes are: PAGE ~ 30 Field Compare 45 Programmed Division 74 380 Console 89 380 Console Typewriter 102 370 Printer 126 323 Card Punch 133 Error Correction Procedures (323 ) @1957 by International Business Machines Corporation 590 Madison Avenue, New York 22, N. Y. Printed in U. S. A. Form 22-6264-1 CONTENTS IN-LINE PROCESSING 5 INTRODUCTION 5 IBM Punched Card Approach - 6 IBM 305 RAMAC Approach - 8 System Organization 10 PROGRAMMING 15 Loading the Program 24 Loading the Disk Storage 33 Unloading the Disk Storage 36 Arithmetic Operations 37 A vailability Editing 40 Other Logic Elements 47 A SAMPLE PROGRAM 50 DISK STORAGE ORGANIZATION 61 INTERNAL CHECKING 70 380 CONSOLE 74 EXAMPLES OF CONSOLE OPERATION- 85 Start - Stop Procedures 85 Inquiries 85 Error Correction 85 Alterations to Drum Tracks 87 Testing Procedures - 88 3 80 CONSOLE TYPEWRITER 89 Typewriter Control Panel 90 370 PRINTER 102 Operating Keys and Lights 104 Prin ter Control Panel 105 Tape-Controlled Carriage 113 Opera ting F ea tures - 116 Form Control - 117 Multiple Line Printing 121 Timing Charts 124 323 CARD PUNCH - 126 Feed and Punch Unit 127 Opera ting Keys and Lights 127 323 Control Panel - 128 Error-Correction Procedures 133 CONTROL PANEL SUMMARY 137 CODING 147