Digital Equipment VT100 User manual

EK-VT1OO-U G-002

1st Edition, August 1978
2nd Edition, January 1979
Copyright © 1978, 1979 by
Digital Equipment Corporation
The material in this manual is for informational
purposes and is subject to change without notice.
Digital Equipment Corporation assumes no re-
sponsibility for any errors which may appear in
this manual.
Printed in U.S.A.
This document was set on DIGITAL's DECset-
8000 computerized typesetting system.
The following are trademarks of Digital Equip-
ment Corporation, Maynard, Massachusetts:
DIGITAL
DEC
PDP
DECUS
UNIBUS
DECsystem-1 a
DECSYSTEM-20
DIBOL
EDUSYSTEM
VAX
VMS
MASSBUS
OMNIBUS
OS/8
RSTS
RSX
lAS

CONTENTS
INTRODUCTION
CHAPTER 1OPERATOR
INFORMATION
PART 1 - KEYBOARD CONTROLS AND INDiCATORS 4
Monitor Controls " 7
Audible Indicators (Tones) 7
PART 2 - SET-UP MODE 8
SET -U PFeatures at aGlance 8
Determining
What aSET-UP Feature Does 10
How To Change aSET-UP Feature 11
Setting the Answerback Message 12
Saving the SET-UP Features 12
Recalling SET -UPFeatures , 12
Resetting the Terminal "" .. ,13
PART 3 - DEFINITION
OF EACH SET-UP FEATURE 13
PART 4 - SELF-TESTING THE VT1 00 16
Self-Test Error Codes 17
PART 5 -
WHAT TO DO IN THE EVENT OF APROBLEM 18
CHAPTER 2
INSTALLATION, INTERFACE INFORMATION AND SPECIFICATIONS
instaliation .. " 21
Site Considerations 21
Unpacking and Installation " 21
User Maintenance 24
Interface Information 24
EIA Interface 24
Optional 20 mA Current Loop Interface 26
External Video Connections 27
VT 100 Specifications , , 28
How to Order Hardware Documentation 30
CHAPTER 3 PROGRAMMER SECTION
The Keyboard 34
Communications Protocols 40
Terminal Control Commands ~ 42
Control Characters 42
Control Sequences 43
Valid ANSI Mode Control Sequences 43
CPR Cursor Position Report - VT100 to Host .45
CUB Cursor Backward -Host to VT100 and VT100 to Host
45
CUD Cursor Down -Host to VT100 and VT100 to Host """.. . .. A5
CUF Cursor Forward -Host to VT100 and VT100 to Host 45
CUP Cursor Position 45
CUU Cursor Up -Host to VT100 and VT100 to Host 46
DA Device Attributes 46
DECALN Screen Alignment Display (DEC Private) 46
DECANM ANSI/VT52 Mode (DEC Private) .46
DECARM
Auto Repeat Mode (DEC Private) .47
DECAWM Autowrap Mode
(DEC Private) 47
DECCKM Cursor Keys Mode (DEC Private) 47

DECCOLM Column Mode (DEC Private) .47
DECDHL Double-Height Line (DEC Private) .47
DECDWL Double-Width Line (DEC Private) 47
DEClO Identify Terminal (DEC Private) .48
DECINLM Interlace Mode (DEC Private) 48
DECKPAM Keypad Application Mode (DEC Private) .48
DECKPNM Keypad Numeric Mode (DEC Private) 48
DECLL Load LEOS (DEC Private) .48
DECOM Origin Mode (DEC Private) 48
DECRC Restore Cursor (DEC Private) .49
DECREPTPARM Report Terminal Parameters .49
DECREQTPARM Request Terminal Parameters 49
DECSC Save Cursor (DEC Private) 50
DECSCLM Scrolling Mode (DEC Private) 50
DECSCNM Screen Mode (DEC Private) 50
DECSTBM Set Top and Bottom Margins (DEC Private) 50
DECSWL Single-Width Line (DEC Private) 51
DECTST Invoke Confidence Test. 51
DSR Device Status Report 51
ED Erase In Display 52
EL Erase In Line 52
HTS Horizontal Tabulation Set 52
HVP Horizontal and Vertical Position 52
IND Index 53
LNM Line Feed/New Line Mode 53
NEL Next Line 53
RI Reverse Index 53
RIS Reset To Initial State 53
RM Reset Mode 53
SCS Select Character Set 54
SGR Select Graphic Rendition 54
SM Set Mode 54
TBC Tabulation Clear 55
Modes 55
ANSI Specified Modes 55
DEC Private Modes 55
Valid VT52 Mode Control Sequences 56
Cursor Up 56
Cursor Down 56
Cursor Right 56
Cursor Left. 56
Enter Graphics Mode 56
Exit Graphics Mode 57
Cursor to Home 57
Reverse Line Feed 57
Erase to End of Screen 57
Erase to End of Line 57
Direct Cursor Address 57
Identify 57
Enter Alternate Keypad Mode 57
Exit Alternate Keypad Mode 58
Enter ANSI Mode 58
Control Sequence Summary 58

ANSi Compatibie Mode 58
VT52 Compatible Mode 61
CHAPTER 4
VT100 OPTIONS
Advanced Video Option - VT1 XX-AB 65
Advanced Video Option Installation 66
Advanced Video Option Checkout 66
20 mA Current Loop Option - VT1 XX-AA 68
20 mA Current Loop Option Installation 68
20 mA Current Loop Option Checkout 69
Communications Cables 70
APPENDIXA
APPENDIX B
APPENDIX C
ANSI DEFINITIONS AND NOTATION 73
7-BIT ASCII CODE 77
FILL CHARACTER REQUiREMENTS 79
OTHER TERMINAlS 80
FIGURES
1-1 VT1 00 Terminal................................................................................................ . 2
1-2 VT100 Keyboard , , .. , , .. , 4
1-3 VT100 Terminal (Rear View) 7
1-4 SET-UP AMode Presentation 8
1-5 SET-U P B Mode Presentation 9
1-6 SET -U P B Mode Summary , 9
2-1 VT100 Terminal Dimensions 22
2-2 VT100 Rear View 23
2-3 20 mA Current Loop Interface 26
2-4 Composite Video Output 28
3-1 Terminal Data Flow 33
3-2 VT1 00 Keyboard 34
4-1 VT100 Rear View 67
4-2 Advanced Video Option Installation 67
4-3 20 mA Current Loop Option 68
4-4 Terminal Controller Board 69
TABLES
1-1 Categories of SET-UP Features 10
1-2 SET-UP Feature Change Summary , 11
1-3 Nonfatal Displayed Error Codes 17
1-4 Problem Checklist 18
2-1 EIA RS-232-C Connector Signals 24
3-1 Machine States , , , 35
3-2 Alphabetic Key Codes , .. , .. , 35
3-3 Nonalphabetic Key Codes 36
3-4 Function Key Codes 36
3-5 Control Codes Generated 37
3-6 Cursor Control Key Codes 38

3-7 VT52 Mode Auxiliary Keypad Codes 38
3-8 ANSI Mode Auxiliary Keypad Codes 39
3-9 Special Graphics Characters 39
3-10 Control Characters 42
4-1 Available Communications Cables 70
C-1 Fill Character Requirements 79
Installation, Warranty and Service Information on Inside Back Cover

INTRODUCTION
The VT100 terminal is designed to work very much like atypewriter. This guide
will tell you everything you need to know to use your terminal.
Achecklist label
is provided for making asemi-permanent record of the features.
unique functions. and mode
of operation of your terminal. Place this label under
the keyboard and keep
it up-to-date so that you will have aquick reference to the
basic status
of your machine.

CHAPTER 1
OPERATOR INFORMATION
The VT100 is asimple device to operate. The terminal (Figure 1-1) is basically a
typewriter
that uses avideo screen instead of paper and communicates with a
computer.
If you can operate atypewriter, you can operate aVT100.
Chapter 1
is divided into five parts:
1. Controls and Indicators
2. Setup Mode
3. Definition
of Each Setup Feature
4. Self-Testing the
VT 100
5. What to do in the Event of aProblem
Part 1shows all the controls and indicators on the terminal and summarizes
the function
of each, thus providing aquick reference for these functions.
Part 2defines the SET-UP mode and briefly summarizes its features.
Part 3describes each feature
in detail. Refer to this section if you need
further information on afeature mentioned in the SET-UP Summary provided
in Part 2.
Part 4provides information on self-testing the VT100. It outlines the steps
required
to start the built-in self-tests and how to interpret the results once
the tests have been run.
Part 5provides aprocedure
to follow in case you encounter any problem
with the VT100. Easily recognized failures with simple corrective actions are
provided for each symptom. Check the list on page
18 before calling for
service.
3

Figure 1-1
VT100 Terminal