ICL 22 Manuals

Manuals and User Guides for ICL 22. We have 1 ICL 22 manual available for free PDF download: Instruction Manual

ICL 22 Instruction Manual (87 pages)

Brand: ICL | Category: Computer Hardware | Size: 4.45 MB

Preface
3
Table of Contents
4
Introduction
6
Components
8
Memory
9
The Arithmetic and Control Unit (ACU)
10
The File Access Channel (FAC)
10
The Input/Output Controllers (Iocs)
10
How the ACU Operates
10
The Base Adder
11
Service Request
11
Interrupt
11
Power Failure
12
Program Check
12
Address Check
12
Load Request
12
Store Organisation and Use Chapter
13
Common
13
Partition Memory
13
Indexing
15
Manipulating Indexes
15
Indirect Addressing
15
Extended Indexing
15
Information Storage
15
Character Set
16
Collating Sequence
17
Alternative Characters in the Set
17
Representation of Negative Numbers
17
Format of the Instruction
18
Operation Code Field
19
Address Mode
19
Indexing Field
19
Indirect Addressing Indicator
19
Page Indicator
19
Address Length Specifier
20
The Address Field
20
Instruction Descriptions
20
Add
20
Add Address
22
Branch
23
Compare
25
Divide
26
Edit
28
Exchange
31
Form Numeric
32
Move Address
33
Move Character
34
Move Numeric
35
Multiply
37
Read
39
Write
42
The Input/Output Controllers Chapter
45
The Multiterminal Input/Output Channel II (MTIOC II)
45
Polling
45
Service Request
45
Load Request
45
I Nputloutput
45
The Digital Clock
47
The Multi-Device IOC
47
Branch-On-Service-Request
47
Read
47
Write
48
Write Control
48
The Synchronous Communications Adaptor
49
Introduction
49
Control Characters
49
Terminator Control Characters
51
Write
51
Read
52
Write Control
53
Transmitting Messages
56
Responses to Polling and Selecting
58
Answering Calls in Dial Line Configurations
58
Condition Codes after SCA Operations
58
Condition Code 2
59
The Asynchronous Communications Adaptor
59
Physical Description
60
Operational Characteristics
61
Dial Operations
62
Manual Dialling
62
Automatic Dialling
62
Automatic Dial Options
62
Operations in ISF Mode
63
Timeout Periods
63
Manual Dialling in ISF Mode
63
Automatic Dialling in ISF Mode
63
Transmission Status Character
64
Reverse (Back) Channel Communication
65
Receiving Data from ISF
65
Automatic Error Correction
67
Communicating with the ACA
67
Initialisation
67
ACA Instructions
68
The Asynchronous Terminal Adaptor
72
General Description
72
Physical Description
72
Functional Description
74
Selection Switches
74
Control Character Input
74
Operation
76
Break
76
Service Request
76
Load Request
76
Repeat Function
76
Programming Information
77
Introduction
77
Status Indications
77
Communication Format
77
Read Control
78
Read
78
Write
78
ATA Application Design Considerations
81
Load
81
Timeout
82
Write Delay Timer
82
Device Start/Stop Codes
82

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