IBM 4979 Manuals

Manuals and User Guides for IBM 4979. We have 1 IBM 4979 manual available for free PDF download: Description

IBM 4979 Description

IBM 4979 Description (46 pages)

Brand: IBM | Category: Monitor | Size: 2.8 MB

Table of Contents

Table of Contents
4
Preface
6
Prerequisite Knowledge
6
Prerequisite Publications
6
Related Publications
6
Display Station Functional Description
8
Attachment Feature Functional Description
8
Standard Features
9
- Cycle Steal
  9
- Electronic Lock out Feature
  9
- Data Protect Feature
  9
- Character Set
  9
Basic Components
9
- Display Screen
  9
- Keyboard
  9
Controls
10
Display Operations
12
Unformatted and Formatted Display Images
12
- Unformatted Mode
  12
- Formatted Mode
  12
Data Representation
13
- Keyboard Operations
  13
Cursor
13
Keyboard
14
- Shift/Lock Keys
  14
- Graphic Alphanumeric Keys
  14
- Local Function Keys
  16
- Interrupt Request Keys
  20
Data Transfer Operations
22
- Direct Program Control (DPC)
  22
- Cycle Steal
  22
Initiating a Display Operation
22
Operate I/O Instruction
22
- Using the IDCB
  23
Input/Output Commands and Display Operations
23
- Command Execution under DPC Mode
  23
- Command Execution in CS Mode
  25
- Using the DCB
  26
Status Information
31
- Condition Codes
  31
- Condition Code 2-Exception
  31
- Condition Code 3-Device End
  31
- Condition Code 4-Attention
  32
- Interrupt Identification Word
  32
- Interrupt Information Byte
  32
- Interrupt Status Byte
  32
- Cycle Steal Status Words
  33
Status after Power and Resets
34
Appendix A. Otaracters-EBCDIC Hexadecimal Equivalents A-I
38
Appendix B. Start I/O Examples
38
DCB Start I/O Examples
38

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