IBM System/360

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Table of Contents4
Sense Byte4
Code Charts30
Extended IBM Card Code to Hexadecimal30
American Standard Code for Information Interchange (ASCII)31
Extended to Eight Bits31
Hexadecimal and Decimal Conversion32
Hexadecimal Addition32
Hexadecimal Multiplication33
Permanent Storage34
Permanent Storage Assignme·-1T34
Input/Output Operations35
SI Format35
Channel Address Word35
Channel Command Word35
Channel Status Word36
Program Status Word36
Interrupt Settings37
Operator Panel39
Operator Panel Indicators39
Diagnostic Programs40
Reference Data45
Circuit Data45
Definitions of ALD Page Number Prefixes45
SLT ALD Logic Block47
ALD Title Block, Page Number and Version, and Engineering Changes47
Net Numbers47
Connector Location Designations47
SLT Board Layout and Pin Addressing Scheme (Board Card Side)48
SLT Circuit Measurements and Transitions50
SMS ALD Logic Block51
SMS Line Levels52
Component Nomenclature53
Address Cards55
24Xx/28Xx56
Priority Jumper Card60
Eight-Bit Code -- BCD Relatinns62
Input/Output Devices64
1052 Printer-Keyboard64
Commands64
Status Byte64
1052/2150 Locations65
1052 Test Character Wiring65
1052 Keyboard Code Translation and Printer Output66
1412/1419 Reader Sorter67
Commands67
Control Commands67
Status Byte67
1412 Sense Byte68
1419 Sense Byte 169
1442 Card Read Punch70
Commands70
Status Byte70
Sense Byte70
1443 Printer71
Commands71
Modifiers for Write and Control71
Status Byte71
Sense Byte72
2250 Model 1 Graphic Display Unit73
Commands73
Summary of Status and Sense Information73
2702 Transmission Control74
Command Decoding74
Mode Control Codes from Control-Type Command, Bits 3,4,And75
Mode Control Codes from Terminal Controls75
Sequence Control Cards76
Status Bytes (Loitial and Ending)77
Sense Byte78
2803 Tape Control79
Status Byte81
Sense Bytes82
Timings85
2400/2800 Control Unit Information88
2821 Control Unit89
Commands89
Modifiers89
Status Byte90
Sense Byte90
2841 Storage Control91
Seek Address92
File Protection92
Status Byte92
Sense Information Summary93
Data Format (2302)95
Data Format (2303)97
Data Format (2311)99
Data Format (2321)101
Data Format (2314)103
7340 Hypertape Drive104
Commands104
Diagnostic Modifiers105
Sense Bits105
System/360 Service Aids108
CE Indicator Latch Card108
Channel Service Aids109
Interrupt Conditions109
Selector Channel Read Sequenc:e110
Multiplexor Operation112
1/0 Interface Flow Charts114
Initiation of Polling or Sele1~Tion114
Control Unit Response to Select-Out115
Command Transfer118
Status/Data Presentation120
Response to Status/Data Presentation121
Response to Stack/Stop/ Accept123
Response to Fall of Status/Service-In124
Burst Mode Waiting Loop125
1/0 Service Aids126
Interface Connectors126
Interface Connector Chart127

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