Olivetti DE 520 Series - Table of Contents

CONTENTS Page
Preface '
Contents 1
Introduction 2
THE DE 523 AND CASSETTES SYSTEM 4
Cassette Handling 4
Size of Cassette Tape 4
Record Handling Techniques 4
Read 4
Read Errors (Parity) 5
F?ead Errors (Overflow) 5
Equipment Errors 5
Backspace 5
Write 5
Write Errors (Parity) 5
Write Errors (Equipment) 5
Write File 6
Rewind 6
TERMINAL OPERATION 7
Selecting and Processing 7
Manual Control 7
OPERATIONAL MODES USING CASSETTES 8
Free-Form Mode 8
Enter Mode 9
Verify Mode 9
Search Under Batch Mode "JO
Error Messages
THE DE 523 AND COMPUTER MAGNETIC TAPE 14
Introduction "'4
TAPE OPERATIONS 15
Read "IS
Backspace 15
Write "'S
Write File 15
Rewind 15
Insert 15
TERMINAL OPERATION 16
Selection and Processing 16
Operational Modes using the Computer Tape 16
Free-Form Mode 16
Enter Mode 16
Verify Mode 17
Batch Mode ''7
Tape Errors 17
Appendix A Tape Error Messages
B International: ASCII-BCD Conversion Table
C International: ASCII-EBCDIC Conversion Table
D Typical Computer Tape Format on the DE 520 System
Figures 1 Beginning-of-Tape & End-of-Tape Areas 12
2 Nominal Record (Cassettes) 12
3 Recording Bit Pattern 13
1.