Digital Equipment VT 240 series Manuals

Manuals and User Guides for Digital Equipment VT 240 series. We have 2 Digital Equipment VT 240 series manuals available for free PDF download: Technical Manual, Owner's Manual

Digital Equipment VT 240 series Technical Manual

Digital Equipment VT 240 series Technical Manual (318 pages)

Brand: Digital Equipment | Category: Touch terminals | Size: 10 MB

Table of Contents

Table of Contents
5
Introduction
17
Genera 1
21
Physical Description
21
System Box (VS240)
21
System Introduction
21
VT240 Series Terminal Block Diagram
22
VT240 Series Video Terminals
22
Display Capabilities
23
Keyboard (LK201)
23
Monitor
23
Display Characteristics
24
Text Capabilities
24
Graphics Capabilities L-S
25
Operating Modes
26
VT100 Mode
26
VT200 Mode, Eight-Bit Controls
26
VT200 Mode, Seven-Bit Controls
26
4010/4014 Mode
27
S Regis Mode
27
Chapter 2 Controls, Indicators, and Connectors

29
- General
  29
- System Box (VS240)
  29
- System Box Controls, Indicators, and Connectors
  29
- Monochrome Monitor (VR201)
  30
- VR201 Monitor Controls, Indicators, and Connectors
  31
- Color Monitor (VR241)
  32
- VR241 Monitor Controls, Indicators, and Connectors (Front and Rear)
  32
- Keyboard (LK201) 2-S
  33
- Main Keypad
  33
- Editing Keypad
  33
- Auxiliary Keypad
  33
- Top-Row Function Keys
  33
- Visual Indicators
  33
- Audible Indicators
  33
- Main Keypad
  35
- Editing Keypad
  36
- Auxiliary Keypad
  36
- Audible Keyclick
  39
- Connector Cable
  40
- System Overview
  41
- Operating States
  41
- Set-Up
  41
- Local
  42
- On-Line
  42
- Input Port)
  42
- System Architecture
  43
- VT240 Series Terminal System Block Diagram
  43
- System Interaction in Set-Up
  46
- System Interaction in Local (Printer Port Inactive)
  47
- System Interaction in Local
  47
- System Interaction in On-Line (Printer Port as Inactive or Output Port)
  48
- System Interaction in On-Line (Printer Port as Inactive or Input Port)
  49
- System Interaction in On-Line
  49
- System Interaction in On-Line (Printer Port as Inactive or Output Port)
  51
- System Interaction in On-Line
  51
- CPU Logic
  55
- Cpu Logic
  56
- Major Circuits/Components
  56
- Central Processor Unit
  56
- Mode Register
  56
- Control Gates
  56
- Address Latch
  56
- Memory Access Decode
  56
- Read Only Memory (ROM)
  56
- O Buffer
  56
- I/O Decode
  56
- CPU Block Diagram
  57
- Mode Reg I Ster
  58
- Power-Up Sequence
  61
- Til 16-Bit Dynamic Write Transaction Diagram
  64
- Til ASPI Transaction Diagram
  65
- Control Gates Block Diagram
  68
- Address Latch Block Diagram
  69
- Memory Map Block Diagram
  70
- Memory Access Decode Block Diagram
  72
- Read Only Memory (ROM) Block Diagram
  72
- Random Access Memory (RAM) Block Diagram
  74
- RAM Devices Array
  75
- I/O Decode Block Diagram
  77
- Keyboard Interface (I/F) Block Diagram
  81
- 8251A USART Receive Data (Rxd) Timing Diagram
  84
- Nonvolatile RAM (NVR) Block Diagram
  85
- Interrupt Control Block Diagram
  87
- Command Register Block Diagram
  88
- Signal Descriptions
  89
- Schematic Reference Information
  89
- Clock Generator Block Diagram
  89
- CPU Logic Signal Descriptions
  90
- Transacti on
  95
- System Communication Logic
  101
- Genera 1
  101
- VT240-Series Terminal System Block Diagram
  101
- Major Circuits/Components
  102
- Dual Asynchronous Receiver/Transmitter (DUART)
  102
- System Communications Logic Block Diagram
  103
- 2681 DUART Internal Circuits
  104
- DUART Block Diagram
  104
- 2681 DUART Internal Circuits Block Diagram
  105
- Input Port
  106
- 2681 DUART Addresses
  107
- Output Port
  107
- Communication/Modem (Comm/Modem) Control
  108
- 2681 DUART: Transmit Data Timing Diagram
  108
- 2681 DUART: Receive Data Timing Diagram
  109
- Communication/Modem (Comm/Modem) Control Block Diagram
  110
- Comm/Modem Control Addresses
  111
- Communication Multiplexer (Comm Mux)
  112
- Printer Interface (I/F)
  112
- Comm/Modem Control Definition of Integral Modem
  112
- Comm Mux Block Diagram
  113
- Printer Interface (I/F) Block Diagram
  113
- EIA Host Interface (I/F)
  114
- Rna Interface (I/F)
  114
- Block Diagram
  115
- Integral Modem Option Connector (J5)
  116
- Integral Modem Option Connector (J5) Pinout
  116
- Signal Descriptions
  117
- Schematic Reference Information
  117
- System Communication Logic Signal Descriptions
  117
- System Communication Logic Schematic References
  125
- Video Logic
  127
- General
  127
- VT240-Series Terminal System Block Diagram
  127
- Major Circuits/Components
  128
- Character Processor (CP)
  128
- Video Logic Block Diagram
  129
- 8085A-2 Microprocessor Device Internal Block Diagram
  131
- Circuits
  133
- 8085A-2 Microprocessor Device
  133
- Graphics Processor
  133
- Character Processor (CP) Memory Block Diagram
  134
- Video Access Block Diagram
  136
- Graphics Processor Block Diagram
  139
- PD7220 GDC Block Diagram
  139
- PD7220 Graphics Display Controller (GDC) Addresses
  140
- PD7220 GDC Commands Summary
  142
- PD7220 GDC Timing Diagram: CPU/CP Read Transaction
  145
- PD7220 GDC Timing Diagram: Display Timing
  145
- PD7220 GDC Timing Diagram: Video Sync Signals
  146
- Timing and Control Circuits
  148
- Clock Generator
  148
- BEN and STOP Gates
  148
- ROM Address Counter
  148
- Timing Signal Generator
  148
- Read-Modify-Write (RMW) Generator
  148
- BLANK Generator
  148
- PD7220 GDC Timing Diagram: Video DMA Write Transaction
  148
- Timing and Control Block Diagram Circuits
  149
- Clock Generator Block Diagram
  149
- BEN and STOP Gates Block Diagram
  151
- ROM Address Counter Block Diagram
  151
- Timing Signal Generator Block Diagram
  151
- Read-Modify-Write (RMW) Generator Block Diagram
  152
- BLANK Generator Block Diagram
  153
- Mode Select Block Diagram
  154
- Bit Map Addressing Circuit
  155
- Bit Map Addressing Circuit Block Diagram
  155
- Plane and Byte Select Block Diagram
  156
- Plane and Byte Select
  157
- Address Select
  157
- High/Low (Hi/Lo) Byte Select
  158
- Address Select Block Diagram
  158
- Row/Column Mux Block Diagram
  159
- Hi/La Byte Select Block Diagram
  159
- Bit Map Write Enable
  160
- Bit Map Write Enable Block Diagram
  160
- Pattern Select Block Diagram
  162
- Pattern Select
  163
- Logic Unit Block Diagram
  164
- Write Data Select Block Diagram
  165
- Bit Map Block Diagram
  166
- Output Map Block Diagram
  170
- Video Output Map (VOM) Addressing
  171
- Digital-To-Analog (D/A) Block Diagram
  172
- Video Logic Signal Description
  174
- Logic Unit
  178
- Write Data Select
  178
- Bit Map
  183
- Video Logic Schematic References
  188
- Genera 1
  191
- VT240-Series Terminal System Block Diagram
  191
- LK201 Keyboard
  191
- Physical Description
  192
- Keyboard Cable Connections
  193
- Functional Description
  194
- Keyboard Operation Overview
  194
- LK201 Keyboard Block Diagram
  194
- Control of Audio Transducer and Indicators
  195
- Keyboard Firmware Functions
  195
- Instructions
  195
- Functions Changed by CPU Instructions
  196
- Firmware Functions Changed by CPU Instructions
  196
- Detailed Keyboard Circuit Description
  196
- Keyboard Matrix Scanning
  196
- Matrix Scanning Block Diagram
  197
- Keyboard Matrix
  199
- LK201-AA Keyboard Layout
  202
- Audio Transducer Control Circuit
  204
- Indicator (LED) Control Circuit
  204
- Beeper Control Circuit
  205
- Indicator (LED) Control Circuit
  205
- Keyboard Communication
  206
- Keyboard Transmit Mode
  206
- Keyboard Receive Mode
  206
- Keyboard Transmit and Receive Character
  206
- Reset Signal for 81351 Microprocessor
  207
- Hardware Keyboard Identification (ID)
  207
- Keyboard Programming
  207
- Keyboard Layout and Key Identification
  207
- Keyboard Functional Divisions
  208
- Keycode Translation Table
  209
- Test Mode
  211
- Modes
  213
- Autorepeat
  213
- Special Considerations Regarding Down/Up Mode
  215
- Autorepeat Rates
  215
- Keyboard Peripherals
  216
- Aud I
  216
- Indicators (Leds)
  216
- Keyboard-To-System Module Protocol
  217
- Special Code Transmission
  217
- System Module to Keyboard Protocol
  219
- Commands
  220
- Parameters
  220
- Peripheral Commands
  220
- Mode Set Commands
  220
- Peripheral Commands in Hexidecimal
  223
- Indicator (LED) Parameter
  224
- Indicator (LED) Layout
  224
- Audio Volume Parameter
  224
- Set Main Array to Down/Up Example
  227
- Set Main Array to Autorepeat Example
  227
- Special Considerations
  228
- Error Handling
  228
- Keyboard Locked Condition
  229
- Future Expansion
  229
- Keyboard Division Default Modes
  229
- Default Conditions
  230
- Audio Volume
  230
- Default Rates in Autorepeat Buffers
  230
- VT240-Series Terminal System Block Diagram
  233
- Monochrome Monitor Exterior View
  235
- Monochrome Monitor Block Diagram
  236
- Monochrome Monitor System Communications Diagram
  238
- J1 Pin-Out
  238
- Composite Video Signal Representation
  239
- J3 Pin-Out
  239
- Composite Video Values
  240
- Composite Video Sync Timing Diagram
  241
- Composite Video Sync Component
  242
- Monitor Module Block Diagram
  244
- VT240-Series Terminal System Block Diagram
  249
- Power Supply Block Diagram
  250
- +5 V Input Circuit
  250
- AC Input and Fan Components Block Diagram
  251
- Physical Location of Power Supply Components
  252
- Power Supply 1 (PS1) Block Diagram
  253
- Input Regulation Circuitry
  254
- DC Output Circuits
  255
- +5.1 V Crowbar Circuit
  255
- Psl Component Layout
  256
- Power Supply 1 (PSI) Components
  257
- Input Voltage Specifications
  259
- Output Voltage Specifications
  260
- Logic Board DC Power Input Connector
  262
- +5 V Input Circuit
  262
- Input Circuit
  263
- DC Power OK Circuit
  264
- VT240-Series Terminal Block Diagram
  265
- Physical Description
  267
- Talk/Data Relay
  268
- Audio Coupler
  268
- Modem Control LS I
  268
- Stack Connector
  268
- Coupler Cut through (CCT)
  270
- Modem Clock
  274
- Carrier Detect (CD)
  275
- Signal States
  276
- Interface Signals
  276
- Interface Signal Levels
  277
- Specifications
  281
- Vt240/Vt102 Differences
  285
- Vt240/Vt125 Differences
  287
- Register Bit Values
  291
- 8251A USART: Command Register
  292
- 8251A USART: Status Register
  293
- 2681 DUART: Data Clock Selection Register
  297
- (Channel a and B
  298
- 2681 DUART: Command Register (CR)
  298
- 2681 DUART: Receive/Transmit Data Registers (RDR/TDR) (Channel a and B)
  298
- Comm/Modem Control: Comm Control Write (CCWR) and Read Registers (CCRD
  303
- Originate Mode
  304
- Answer Mode
  304
- Comm/Modem Control: Modem Control Write Register
  304
- (Mcwr
  304
- Comm/Modem Control: Modem Control Read Register
  304
- (Mcrd
  304
- Video Logic Mode Select Register 1
  306
- Video Logic Unit Register
  306
- Video Logic Write Mode Programming Overview
  307
- Mode 1 (Text Mode) Programming Values
  308
- Mode 2 (Vector Mode) Programming Values
  309
- Mode 4 (Screen Erase Mode) Programming Values
  311
- Mode 5 (Word/Line Erase Mode) Programming
  312

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Digital Equipment VT 240 series Owner's Manual

Digital Equipment VT 240 series Owner's Manual (162 pages)

video terminal

Brand: Digital Equipment | Category: Touch terminals | Size: 61 MB

Table of Contents

Table of Contents
4
Chapter 1 A Look at the Terminal

12
- General
  12
- VT240 Components
  12
  - Monitor
    13
  - System Box
    13
  - Keyboard
    13
- How the VT240 Works
  13
- Operating States
  14
  - Set-Up
    14
  - On-Line
    14
  - Local
    14
- Operating Modes
  15
  - VT200 Mode, 7-Bit Controls
    15
  - VT200 Mode, A-Bit Controls
    15
  - VT100 Mode
    15
  - VT52 Mode
    15
  - 4010/4014 Mode
    15
- Character Set Modes
  16
- Regis Graphics
  16
- CRT Saver Feature
  16
- Programming the VT240
  16
Chapter 2 Controls, Indicators, and Connectors

18
- General
  18
- System Box
  18
- System Box Controls, Indicators, and Connectors
  19
- Monochrome Monitor
  21
- Color Monitor
  23
  - Cursors
    25
- Keyboard
  25
- Main Keypad
  26
  - Tab
    26
  - Ctrl
    26
  - Lock
    27
  - Shift
    27
  - Return
    27
  - XJ (Delete)
    27
  - Compose Character
    28
- Editing Keypad
  28
- Auxiliary Keypad
  28
- Top-Row Function Keys
  29
  - Hold Screen
    29
- Top-Row Function Keys and Visual Indicators
  29
  - Print Screen
    30
  - Set-Up
    30
  - Data/Talk
    30
  - Break
    30
  - F11 (Esc)
    31
  - F12 (Bs)
    31
  - F13 (Lf)
    31
  - Function Key Summary
    31
- Visual Indicators
  32
  - Hold Screen Indicator
    32
  - Lock Indicator
    32
  - Compose Indicator
    32
  - Wait Indicator
    32
- Audible Indicators
  33
  - Keyclick
    33
  - Bell
    33
Chapter 3 Operating Procedures

34
- General
  34
- Printing
  34
  - Normal Mode
    35
  - Auto Print Mode
    35
  - Printer Controller Mode
    35
  - Local Controller Mode
    36
- Integral Modem/Auto Dialer Option
  36
  - Data Mode
    36
  - Talk Mode
    37
  - Dialer Mode
    37
- Using Dialer Mode Features
  37
- Composing Characters
  42
Chapter 4 Terminal Set-Up

56
- General
  56
- Using Set-Up
  57
- Set-Up Screens
  57
  - Terminal Identifier
    58
- Sample Set-Up Screen
  58
  - Firmware Version Number
    59
  - Status Line
    59
  - Fields
    59
  - Set-Up Controls and Cursor
    61
- Set-Up Example: Changing Features
  62
- Set-Up Directory Screen
  62
- Set-Up Screen Descriptions
  63
- Set-Up Directory Screen
  65
- North American
  65
- General Set-Up Screen
  75
- Communications Set-Up Screen
  80
- Printer Set-Up Screen
  86
- Keyboard Set-Up Screen
  91
- Tab Set-Up Screen
  96
- Graphics Set-Up Screen
  98
- 4010/4014 Set-Up Screen
  101
- Telephone Set-Up Screen
  104
Chapter 5 Communication

108
- General
  108
- Host and Printer Port Interfaces
  109
- Modems
  109
- Cables
  114
- Printers
  114
- Character Format
  115
- Terminal-Host Data Flow Control
  115
  - Conditions that Send XON
    116
  - Conditions that Send XOFF
    116
  - Buffer Overflow Prevention
    117
  - Use of Fill Characters
    118
  - Connect/Disconnect
    119
- Printer Port Operation
  120
- Printer Port as Input Device (Printer-To-Host Mode)
  120
- Printer Port as Input/Output Device (Printer Controller Mode)
  122
- Terminal-Printer Data Flow
  123
Chapter 6 Problem Solving

124
- General
  124
- Common Operating Problems
  124
- Power-Up Self-Test
  126
- Performing the Power-Up Self-Test
  127
- Power-Up Self-Test Indicators
  127
- Digital Service
  129
Appendix A Specifications

130
- General
  130
Appendix B Options, Documentation, and Supplies

134
- Available Options
  134
- Related Documentation
  135
- Specifications
  136
- Ordering Information
  137
Appendix C Keyboards

138
- General
  138
- United Kingdom
  138
- Belgium (Flemish)
  138
- Canada (French)
  138
- Denmark
  138
- Finland
  138
- France/Belgium
  138
- Germany/Austria
  138
- Holland
  138
- Spain
  150

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